the magnetic field inside a 5.0-cm -diameter solenoid is 2.0 t and decreasing at 3.40 t/s . part a what is the electric field strength inside the solenoid at a point on the axis? express your answer with the appropriate units. activate to select the appropriates template from the following choices. operate up and down arrow for selection and press enter to choose the input value typeactivate to select the appropriates symbol from the following choices. operate up and down arrow for selection and press enter to choose the input value type e
Answers
Answer: The electric field strength inside the solenoid at a point on the axis is approximately 8.5 × 10³ V/m, directed opposite to the direction of the changing magnetic field.
Explanation:
We can use Faraday's law to relate the changing magnetic field to the electric field:
∂Φ/∂t = -E
where ∂Φ/∂t is the time rate of change of the magnetic flux through a surface, and E is the electric field strength.
For a solenoid with N turns per unit length and a current I, the magnetic field inside the solenoid is given by:
B = μ₀ × N × I
where μ₀ is the permeability of free space.
Differentiating both sides with respect to time, we get:
d B / d t = μ₀× N ×d I / d t
We can substitute the given values to find dI/dt:
d I / d t = (d B / d t) / (μ₀× N)
d I / d t = (3.40 t/s) / (4π × 10^-7 T·m/A) × (100 / 5) = 2.72 × 10⁴ A/s
We can now use this value along with the given values for the diameter and magnetic field to find the electric field strength E:
E = - ∂Φ/∂t
The flux Φ through a circular surface of radius r and perpendicular to the axis of the solenoid is given by:
Φ = B × π × r²
Differentiating both sides with respect to time, we get:
d Φ / d t = π × r² × d B / d t
Plugging in the given values, we get:
d Φ / d t = π × (0.025 m)² × (3.40 t/s)
d Φ / d t = 5.34 × 10⁻³T·m²/s
Finally, we can substitute these values into the equation for E:
E = - ∂Φ/∂t = - (d Φ / d t) / (π × r²)
E = - (5.34 × 10⁻³ T·m²/s) / (π × (0.025 m)²)
E ≈ - 8.5 × 10³ V/m
Therefore, the electric field strength inside the solenoid at a point on the axis is approximately 8.5 × 10³ V/m, directed opposite to the direction of the changing magnetic field.
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Related Questions
The dominant mechanism by which high-mass stars generate energy on the main sequence is called
a. the proton-proton chain.
b. the carbon-carbon reaction.
c. the triple-alpha process.
d. the CNO cycle.
e. neutrino cooling.
Answers
The dominant mechanism by which high-mass stars generate energy on the main sequence is called (d) the CNO cycle.
The CNO cycle, or the carbon-nitrogen-oxygen cycle, is a nuclear fusion process that occurs in the cores of high-mass stars. It involves the conversion of hydrogen into helium through a series of nuclear reactions mediated by carbon, nitrogen, and oxygen isotopes.
In the CNO cycle, carbon, nitrogen, and oxygen act as catalysts to facilitate the fusion of protons (hydrogen nuclei) into helium nuclei. This process releases a tremendous amount of energy in the form of gamma rays. The energy released powers the star and enables it to maintain its stability and luminosity on the main sequence.
The CNO cycle is more efficient than the proton-proton chain (option a) in high-mass stars due to their higher core temperatures. The proton-proton chain is the dominant energy generation mechanism in lower-mass stars like the Sun.
The carbon-carbon reaction (option b) and the triple-alpha process (option c) play significant roles in later stages of stellar evolution but are not the primary mechanisms for energy generation in high-mass stars. Neutrino cooling (option e) is not directly related to energy generation but is a process by which energy is lost from the star through the emission of neutrinos.
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Identify the primary effect of each situation on capillary forces. Choose one for each of the following.
a. Increasing the surface tension of the liquid
b. Decreasing the contact angle between the liquid and solid surface
c. Increasing the viscosity of the liquid
d. Decreasing the temperature of the liquid
Answers
The primary effect of increasing the surface tension of the liquid is to increase the capillary force. Capillary forces arise due to the combined effects of adhesion and cohesion
When the surface tension of the liquid increases, the capillary rise will increase. It is because the increase in surface tension leads to an increase in the force that pulls the liquid upwards in a tube. is as follows;If you place a capillary tube in a beaker filled with water, the water surface inside the tube rises slightly higher than the level outside the tube.
This rise in water level is called capillary rise. The capillary rise is caused by the attraction between the molecules of the water and the molecules of the glass tube.This attraction is called capillary force or capillary action. The capillary force is due to the combined effect of adhesive and cohesive forces. The adhesive force is the attraction between the molecules of the liquid and the molecules of the solid surface, while the cohesive force is the attraction between the molecules of the liquid.
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For a parallel-plate capacitor the energy density is uniform in the region between the plates, except near the edges of the plates. Is this also true for a spherical capacitor?.
Answers
No. this is not true for a spherical capacitor.
A spherical capacitor can be thought of as what is shown in the attached figure.That phenomenon for the parallel plate capacitor occurs because of the sudden change in the electric field intensity. Between the plates, the electric field intensity is constant and uniform and that uniformity changes at the edges.Such a uniform field intensity is not found in a spherical capacitor.The field at a given distance from the sphere is a function of that distance so it changes from place to place.So the energy density is not uniform in a region between 2 spherical surfaces.Therefore, what is true for spherical capacitors is that the energy density is like that at the edges of a parallel plate capacitor.#SPJ4
I n it in 20 minutes
JL.61 A producer of refrigerator compressors wants to implement
a just-in-time production line to support demand from a neighboring
appliance manufacturer. Demand from the applian
Answers
The producer of refrigerator compressors needs to determine the number of kanbans required for implementing a just-in-time production line to meet the demand for 150 compressors per day from a neighboring appliance manufacturer.
To calculate the number of kanbans required, we need to consider the production lead time, safety stock factor, and optimal production quantity. The production lead time is 5 days, which means that it takes 5 days to produce a batch of compressors once the production process starts.
The safety stock factor is 17%, indicating that the producer wants to maintain an additional 17% of the daily demand as safety stock to mitigate any unforeseen fluctuations. The optimal production quantity is 95 units, which is the batch size that minimizes setup costs.
To determine the number of kanbans, we first need to calculate the total demand during the production lead time. Since the demand is 150 compressors per day and the lead time is 5 days, the total demand during the lead time is 150 compressors/day * 5 days = 750 compressors. Adding the safety stock, the total demand becomes 750 compressors + (17% * 150 compressors) = 750 compressors + 25.5 compressors = 775.5 compressors.
Next, we divide the total demand by the optimal production quantity to get the number of kanbans required. The number of kanbans is calculated as 775.5 compressors / 95 compressors per kanban = 8.16 kanbans. Since we cannot have a fraction of a kanban, we round up to the nearest whole number. Therefore, the producer of compressors requires 9 kanbans to meet the demand of 150 compressors per day from the neighboring appliance manufacturer.
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The complete question is:
A producer of refrigerator compressors wants to implement a just-in-time production line to support demand from a neighboring appliance manufacturer. Demand from the appliance manufacturer is for 150 compressors a day. The production lead time is 5 days and the producer wants to have a 17% safety stock factor. This producer has also cut setup costs such that the optimal production quantity is 95 units. How many kanbans does this producer of compressors require?
A perfectly inelastic demand curve Multiple Choice graphs as a line parallel to the vertical axis. has a price elasticity coefficient greater than unity. has a price elasticity coefficient of unity throughout. graphs as a line parallel to the horizontal axis.
Answers
A perfectly inelastic demand curve graphs as a line parallel to the vertical axis.
How does a perfectly inelastic demand curve graph?A perfectly inelastic demand curve is a type of demand curve where the quantity demanded remains constant regardless of changes in price. In other words, the demand is completely unresponsive to price changes. When graphed, a perfectly inelastic demand curve appears as a vertical line parallel to the vertical axis.
This means that no matter how much the price of a product or service changes, the quantity demanded by consumers remains the same. The price elasticity of demand coefficient for a perfectly inelastic demand curve is zero because there is no change in quantity demanded relative to price changes.
A perfectly inelastic demand curve is often seen in the case of essential goods or products with no close substitutes, where consumers are willing to pay any price to obtain the item. Examples may include life-saving medications or specific medical treatments.
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Which type of force does a window washer want acting on him when trying to keep the same position?
A. Large
B. Small
C. Balanced
D. Unbalanced
Answers
Balanced force does a window washer want acting on him when trying to keep the same position.
What is force?
Force is an external influence that is capable of changing the motion of a body, either by a push or pull, or by causing a change in the shape or direction of the body. Force is a vector quantity, meaning it has both magnitude and direction. It can be a result of either physical contact, like pushing or pulling, or a non-contact force, such as gravity, magnetism, or electricity. Force is a fundamental concept in physics and its effects are studied in numerous fields, from mechanics to thermodynamics. Force can be used to move objects, cause objects to change shape, or cause objects to accelerate. It is a powerful tool for understanding physical phenomena.
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Compare the mass of the two objects.
Which statement accurately describes the mass of the watermelon
Answers
The statement which accurately describes the mass of the watermelon is:
The mass of the watermelon is greater than 2 kg.
Option c is the correct answer
What are fundamental quantities?Fundamental quantities are the quantities which forms the basic unit of measurement. In order words, these are the quantities upon which other quantities and units are derived from.
The three examples of fundamental quantities are:
LengthMassTime.Other examples of fundamental quantities are:
TemperatureLuminous intensityAmount of substanceMagnetic fluxElectric currentSo therefore, the statement which accurately describes the mass of the watermelon is:
The mass of the watermelon is greater than 2 kg.
Complete question:
Compare the mass of the two objects.
Which statement accurately describes the mass of the watermelon?
a. The mass of the watermelon is less than 2 kg.
b. The mass of the watermelon is equal to 2 kg.
c. The mass of the watermelon is greater than 2 kg.
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a hot tub has 4.38x10³ kg of water in it. each water molecule has a mass of 2.98x10-²⁴. how many water molecules are in the hot tub?
Answers
The number of water molecules in the hot tub is 1.47×10²⁷ molecules
Data obtained from the questionThe following data were obtained from the question:
Mass of water = 4.38×10³ KgMass of one molecule = 2.98×10⁻²⁴ KgNumber of molecules =?How to determine the number of moleculesThe number of water molecules in the hot tub can be obtained as follow
Number of molecules = Mass of water / mass of one molcule
Number of molecules = 4.38×10³ / 2.98×10⁻²⁴
Number of molecules = 1.47×10²⁷ molecules
Thus, number of molecules in the hot tub 1.47×10²⁷ molecules
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PHYSICS HELP PLEASE,, I’LL MAKE YOU THE BRAINLIEST!
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Q: Place the block at the top of a 30 degree ramp. What is the net force on the block when it begins to slide down the ramp? What is the acceleration of the block down the ramp? SHOW WORK/CALCULATIONS
Answers
First, let
f = mag. of static friction
n = mag. of normal force
w = m g = mag. of gravitational force (the weight of the block)
m = mass of the block
g = 9.80 m/s² (the mag. of the acceleration due to gravity)
a = acceleration of the block
It's the static friction that interests us at the moment "when it begins to slide", meaning the precise moment at which static friction is at its maximum. At that point, the friction has magnitude f such that
f = 0.5 n
The problem is much easier to work through if you split up the forces into components acting parallel and perpendicular to the ramp. By Newton's second law, we have
• the net force acting parallel to the ramp is
∑ F = - f + w sin(30°) = m a
• and the net force acting perpendicular to the ramp is
∑ F = n - w cos(30°) = 0
Hence the net force on the block as it begins to slide acts only in the parallel direction. Note that we take the positive parallel direction to be the one in which the block slides down the ramp (i.e. opposing the friction force), and the positive perpendicular direction to be the same as the normal force.
Solve the second equation for n :
n = m g cos(30°) = (100 kg) (9.80 m/s²) cos(30°) ≈ 849 N
Then
f = 0.5 (849 N) ≈ 424 N
and so the net force on the block is
∑ F ≈ - 424 N + (100 kg) (9.80 m/s²) sin(30°) ≈ 65.6 N
Next, you want to find the acceleration of the block as it is sliding down the ramp, during which time kinetic friction kicks in. We have the same equations as above, except now f = 0.3 n. So we still have n ≈ 849 N, which gives
f = 0.3 (849 N) ≈ 255 N
∑ F = - f + w sin(30°) = m a
→ - 255 N + (100 kg) (9.80 m/s²) sin(30°) ≈ (100 kg) a
→ a ≈ 2.35 m/s²
How long does it take for the sun to complete one orbit through the ecliptic?.
Answers
Answer:
It takes just a little bit over a year
Explanation:
Because Earth takes one year to orbit the Sun, So the Sun takes one year to make a complete circuit of the ecliptic. The Sun moves a little less than 1° eastward every day therefore it would be about 382 days (says scientist or less than that)
Up to a point, the elongation of a spring is directly proportional to the force applied to it. Once you extend the spring more than 10. 0 centimeters, however, it no longer follows that simple linear rule. What force will result in stretching the spring 10. 0 centimeters?.
Answers
the force that will result in stretching the spring 10.0 centimeters is 70 N.
If a spring is elongated beyond the elastic limit, its behavior becomes non-linear, making it impossible to use a simple formula.
According to Hooke's law, the force needed to stretch a spring by a distance of x is F = -kx, where k is the spring constant.
F=kx
F=force applied
x= elongation
k= spring constant
The problem stated that the spring follows the simple linear rule until it is elongated beyond 10 cm. Therefore, we can conclude that the spring obeys Hooke's law until it is stretched beyond 10 cm. So, we can use Hooke's law to solve the problem.
Hence, the force that will result in stretching the spring 10.0 centimeters is F = -kx.
F = - kx
=-1.4*50
= -70 N (negative sign indicates that the force is in the opposite direction to the elongation)
Therefore, the force that will result in stretching the spring 10.0 centimeters is 70 N.
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At an outdoor phyie demontration, a delay of 0. 50 econd wa oberved between the time ound wave left a loudpeaker and the time thee ound wave reached a tudent through the air. If the air i at STP, how far wa the tudent from the peaker? (1) 1. 5 × 10-m (91. 7 × 102 m (3) 6. 6 × 10? m (4) 1. 5 × 108 m
Answers
1.7×10^2 m
The student was 1.7×10^2 m far from the speaker.
Is sound slower to travel in water?The distance that sound waves travel is mostly influenced by the temperature and pressure of the ocean, even though sound travels through water at a far faster rate than it does through air.
What sounds like a sound with a high amplitude?The change in pressure that a sound wave causes when it is measured at a particular location is related to the amplitude of the wave. If the amplitude grows, the sound is heard as louder, and if it drops, it is heard as quieter.
Does greater amplitude equate to greater speed?The pace at which a wave moves has nothing to do with its amplitude. Waves A and B move forward at the same speed. Only changes in the characteristics of the medium a wave travels through can change its speed.
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To calculate the distance between the loudspeaker and the student, we can use the speed of sound in air, which is approximately 340 meters per second (m/s) at standard temperature and pressure (STP).
How is this calculated?The formula to calculate distance is:
distance = speed x time
where distance is the distance between the loudspeaker and the student, speed is the speed of sound in air, and time is the delay that was observed between the time the sound wave left the loudspeaker and the time it reached the student.
distance = 340 m/s x 0.50 s
distance = 170 m
So, the distance between the loudspeaker and the student is 170 meters.
This answer corresponds to (2) 91.7 x 102m.
It's worth mentioning that sound speed can be affected by temperature, humidity, and atmospheric pressure which can cause slight variations from the standard 340 m/s at STP.
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a typical circular saw has a radius of 0.184 m and rotates so the velocity of its edge is 110 m/s. how many rpm does the saw make?
Answers
The speed of the saw is 5710 rpm.
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A glass window 0.45 cm thick measures 86cm by 36 cm.How much heat flows through this window per minute if the inside and outside temperatures differ by 17 degrees celcius?
Answers
The rate of heat flow through the window is approximately 56,896.2 joules per minute.When there is a temperature difference between the inside and outside of a material, heat will flow through the material from the warmer side to the cooler side.
The rate at which heat flows through a material is determined by a property called thermal conductivity, which is different for different materials. The amount of heat that flows through a material per unit time can be calculated using Fourier's Law of Heat Conduction. In this problem, we are given the dimensions of a glass window and its thickness, as well as the temperature difference between the inside and outside. We are asked to find the rate of heat flow through the window per minute. To solve this problem, we need to use the following formula:
q = kA (T1 - T2)/d
where q is the rate of heat flow, k is the thermal conductivity of the glass, A is the area of the window, T1 is the temperature on one side of the window, T2 is the temperature on the other side of the window, and d is the thickness of the window.
We are given the following values:
k for glass is approximately 0.9 W/m-K (we can convert this to cm units by dividing by 100)
A = 86 cm x 36 cm = 3096 cm^2
T1 - T2 = 17 degrees Celsius
d = 0.45 cm
Substituting these values into the formula, we get:
q = (0.9/100)(3096)(17)/(0.45)
q = 948.27 W
To convert to units of joules per minute, we need to multiply by 60:
q = 56,896.2 J/min
Therefore, the rate of heat flow through the window is approximately 56,896.2 joules per minute.
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a tank with water has a small opening. given the area of the opening, what is the net force acting on the opening?
Answers
The net force acting on the opening of a tank with water can be calculated by multiplying the area of the opening by the pressure exerted by the water.
The net force acting on the opening can be calculated using the equation:
F = (ρV) / A
where ρ is the density of the water (approximately 1000 kg/m^3), V is the volume of water flowing through the opening (assuming a constant flow rate), and A is the area of the opening.
Assuming a constant flow rate, the volume of water flowing through the opening can be calculated using the equation:
V = A × Δt
where Δt is the time over which the volume of water is measured.
Therefore, the net force acting on the opening can be calculated as follows:
\(F = (ρV) / A = (1000 kg/m^3) × (A × Δt) / (A)\)
where the units of force are kg \(m/s^2\).
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2. A ball is dropped from rest. The acceleration due to gravity is 10m/s? and the time it
takes for the ball to reach the ground is 5 seconds. What was the velocity of the ball just
before it hits the ground
Answers
Answer:
STEP BY STEP
V = S/T
V= 10/5
V = 2 m/s
in the evening you go back to the swimming pool with your friends. the object is still lying on the bottom of the pool in the same location as before, but since it's dark now, you use a flashlight to show it to your friends. remembering the apparent location of the object in daylight, where should you aim to illuminate the object with the flashlight? assume you hold the flashlight at eye level.
Answers
You should aim at an above point cause of Refraction.
Refraction is an effect that occurs when light travels from the air to a denser medium like water. In general, the relative angle of incidence is different from the refracted one, as illustrated in the figure. Since the refracted angle of the light beam is narrower than the incident angle because water is denser than air, it is required to aim slightly above the actual location of the object from outside the pool in order for the light to reach it. Refractive Index can be calculated by the formula n = sin i/sin r
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Name some appropriate units for measuring energy
Need ASAP
Answers
Answer:The SI unit of energy/work is the joule (J), named for English physicist James Prescott Joule (1818 - 1889). Joule discovered the relationship between heat and mechanical work, which led to the development of the laws of thermodynamics
Explanation:
why water is optically denser than air
Answers
Answer: Speed of light in air is more than speed of light in water, which means water is optically denser than air.
Answer:
There
Explanation:
A medium is denser when the speed of light gets reduced when light travels through that medium. When water travels through water, its speed gets reduced. Hence, it is a optically denser medium. Speed of light in air is more than speed of light in water, which means water is optically denser than air.
if you ran 3.1 miles in 0.5 hours. what was your speed
Answers
Answer:
speed= 6.2 m/hrExplanation:
distance= 3.1 mile
time=0.5 hours
s=d/t
s=3.1/0.5
speed= 6.2 m/hr
If you run for a distance of 3.1 miles in 0.5 hours, then the speed in miles per hour will be 6.2 m/hr.
What is Speed?A scalar quantity in kinematics and common usage, an object's speed is the size of the change in its position over time or the amount of change in its position per unit of time.
As the duration of the time interval approaches zero, the instantaneous speed is the maximum limit of the average speed. The distance traveled divided by the duration of the interval represents the average speed of an object over a period of time.
Given information,
Distance covered, d = 3.1 miles
Time taken, t = 0.5 hours
Speed = \(Distance/time\)
Speed = 3.1/0.5
Speed = 6.2 m/hr
Therefore, the speed while running is 6.2 m/hr.
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which group of the periodic table consists of elements that share similar properties and have 2 electrons in their outer shells
A. 1
B. 13
C. 14
D. 2
Answers
Answer: The correct answer is A.
Explanation:
Group 1 of the periodic table consists of elements that share similar properties and have 2 electrons in their outer shells. These elements are known as the alkali metals. They include elements such as lithium (Li), sodium (Na), potassium (K), and so on, all of which have a single electron in their outermost shell.
A man starts his car from rest and accelerates at 1 m/s2 for 2 seconds. He then continues at a constant velocity for 10 seconds until he sees a tree blocking the road and applies brakes. The car, decelerating at 1 m/s2, finally comes to rest. Which of the following graphs represents the motion correctly?
Answers
The correct graph should have a positive slope for the initial acceleration phase, a horizontal line for the constant velocity phase, and a negative slope for the deceleration phase.
To determine which graph represents the motion correctly, let's analyze the given information step by step.
The car starts from rest and accelerates at 1 m/s² for 2 seconds.
During this period, the velocity of the car increases linearly, as the acceleration is constant. Therefore, the graph representing this phase should be a straight line with a positive slope.
The car then continues at a constant velocity for 10 seconds.
Since the car maintains a constant velocity during this period, the graph representing this phase should be a horizontal line, indicating no change in velocity.
The car sees a tree blocking the road and applies brakes, decelerating at 1 m/s² until it comes to rest.
During this phase, the car's velocity decreases linearly due to the deceleration. Therefore, the graph representing this phase should be a straight line with a negative slope.
Based on this analysis, the correct graph should have a positive slope for the initial acceleration phase, a horizontal line for the constant velocity phase, and a negative slope for the deceleration phase.
Among the given options, the graph that represents the motion correctly is likely to be a graph that meets these criteria. However, since the options were not provided, I'm unable to directly identify the correct graph.
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describe a scenario that would affect the tetrahedron using the element of heat as a variable.
Answers
A scenario that would affect the tetrahedron using the element of heat as a variable is when the tetrahedron undergoes heat treatment.
Heat treatment is a process in which a material (in this case, the tetrahedron) is heated to a specific temperature to alter its physical and mechanical properties. In heat treatment, the tetrahedron is heated to a high temperature and then cooled down slowly. The heating process helps to dissolve the impurities in the tetrahedron, while the slow cooling process allows the atoms to reorganize into a more stable structure.
Therefore, heating the tetrahedron during heat treatment affects the atomic structure and physical properties of the tetrahedron.
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What happens when rubidium forms an ion? It gains an electron and has an octet in the lowest energy level. It loses an electron and has an octet in the next-lowest energy level.
Answers
When rubidium forms an ion, it loses an electron and has an octet in the next-lowest energy level.
Rubidium, being a Group 1 alkali metal, has one valence electron in its outermost energy level. In order to achieve a stable electron configuration, it tends to lose this valence electron and form a cation with a positive charge. By losing an electron, rubidium achieves a noble gas configuration, resembling the electron arrangement of the previous noble gas, in this case, krypton, which has a filled octet in its next-lowest energy level.
The formation of a rubidium ion involves the loss of one electron, resulting in a positively charged cation. This electron loss allows rubidium to achieve a more stable electron configuration by attaining a filled octet in the next-lowest energy level.
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Got stuck on question 3 need help please
Answers
B. Object at rest, velocity is zero
C. Decreasing negatively, velocity is constant
D. Increasing positively, velocity is constant
A 2.0 kg melon is balanced on a circus performer's head. An archer shoots a 50.0 g arrow at the melon with a speed of 30 m/s. The arrow passes through the melon and emerges with a speed of 18 m/s. Find the speed of the melon as it flies off the performer's head.
Answers
The speed of the melon as it flies off the performer's head is 0.3 m/s
Law of conservation of momentum?The law of conservation of momentum states that for a system of colliding bodies, the total momentum before the collision is equal to the total momentum after the collision, provided there is no net external force acting on the bodies.
To find the speed of the melon, we use the formula from the law of conservation of momentum.
Formula:
mu+m'u' = mv+m'v'............ EquationWhere:
m = mass of the melonu = initial velocity of the melonm' = mass of the arrowu' = initial velocity of the arrowv = final velocity of the melonv' = final velocity of the arrow.From the question,
Given:
m = 2 kgm' = 50 g = 0.05 kgu = 0 m/s (at rest)u' = 30 m/sv' = 18 m/s.Substitute these values into equation 1
(2×0)+(0.05×30) = (0.05×18)+(2×v)0+1.5 = 0.9+2v2v = 1.5-0.92v = 0.6v = 0.3 m/s.Hence, The speed of the melon as it flies off the performer's head is 0.3 m/s.
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Information about conservation of energy
Answers
Explanation:
Energy conservation is the effort made to reduce the consumption of energy by using less of an energy service. This can be achieved either by using energy more efficiently (using less energy for a constant service) or by reducing the amount of service used (for example, by driving less). Energy conservation is a part of the concept of Eco-sufficiency. Energy conservation reduces the need for energy services and can result in increased environmental quality, national security, personal financial security and higher savings.It is at the top of the sustainable energy hierarchy. It also lowers energy costs by preventing future resource depletion.
Energy can be conserved by reducing wastage and losses, improving efficiency through technological upgrades and improved operation and maintenance. On a global level energy use can also be reduced by the stabilization of population growth.
Energy can only be transformed from one form to other, such as heat energy to motive power in cars, or kinetic energy of water flow to electricity in hydroelectric power plants. However machines are required to transform energy from one form to other. The wear and friction of the components of these machine while running cause losses of very high amounts of energy and very high related costs. It is possible to minimize these losses by adopting green engineering practices to improve life cycle of the components.
Hope this helps u ......Explanation:
ii) The distance travelled by an object in time
(100 + 1) s is (5.2 + 0.1) m. What is the
speed and it's error?
Ans: 0.052 ms-l, + 0.029 ms'
Answers
Answer:
v = (5.2 ± 0.2) 10⁻² m / s
Explanation:
This is an exercise in kinematics of uniform motion. The formula for the average speed is
v = x / t
let's calculate
v = 5.2 / 100
v = 0.052 m / s
v = 5.2 10-2 m / s
we have to find the uncertainty of this quantity we propagate the error using derivatives
Δv = dv /dx Δx + dv /dt Δt
taking everything in the most unfavorable case, I mean all positive
let's make the derivatives
dv / dx = 1 / t
dv / dt = -x / t²
we substitute
Δv = 1 /t Δx + x /t² Δt
let's calculate the error
Δv = 1/100 0.1 + 5.2 / 100² 1
Δv = 1 10⁻³ + 5.2 10⁻⁴
Δv = 1.52 10⁻³ m/s
the error must be given with a significant figure
Dv = 2 10⁻³ m / s
the answer is
v = (5.2 ± 0.2) 10⁻² m / s
John has an object suspended in the air. It has a mass of 50 kilograms and is 50 meters above the ground. Calculate the objects potential energy.
Answers
Answer:
the objects potential energy is 24500 J.
hope this helps <3
please help me guys please please please please please please please please please please please please please
Answers
Answer:
1.F = 256 N
2.a = 8 m/s/s
By looking at the given information, you know force, and an acceleration. Therefore you have enough information to use the first formula.
F = ma
256 N = m * 8 m/s/s
m = 256 N/8 m/s/s
m = 32 Kg