If acceleration of a body starting from the rest is 0.5m/s^2 how long will it take the body to travel 400m(if u are genius answer this)
Answer:
pls I don't understand it
Explanation:
can you follow me pleaee??
An object is sliding down a frictionless incline of angle 32.8 degree. Given the potential energy of object at the top of the incline of 6.11 Joules and the length of the base of the incline of 1.77 m, the mass (kg) of the object is:
The item has a mass of 0.5 kg.
To resolve this issue, we can employ energy conservation. The object only has potential energy at the top of the slope, so:
mgh = 6.11 J
where m is the object's mass, g is its gravitational acceleration (9.81 m/s2), and h is the incline's height, which may be calculated using trigonometry:
H is equal to sin(32.8°) * 1.77 m = 0.96 m.
When we add h to the above equation, we obtain:
mg * 0.96 m = 6.11 J
Using an m-solve, we obtain:
0.5 kg is equal to m = 6.11 J / (0.96 m * 9.81 m/s2)
The object therefore has a 0.5 kilogramme mass.
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1). why did magellan use radar to look at the surface of venus?
Magellan used radar to look at the surface of Venus because Venus is covered by thick clouds that prevent visible light from penetrating to its surface.
Why the surface of Venus is covered by thick clouds?Magellan used radar to look at the surface of Venus because Venus is covered by thick clouds that prevent visible light from penetrating to its surface.
Radar is an effective way to study the surface of Venus because it can penetrate through the clouds and bounce off the surface, allowing scientists to create detailed maps of the planet's topography and geological features.
The radar technology used by the Magellan spacecraft allowed scientists to collect data on Venus over a period of four years, from 1990 to 1994. The data revealed a complex surface with mountains, valleys, craters, and volcanic features, and helped scientists better understand the geology and formation of Venus.
Overall, the use of radar by Magellan was a significant breakthrough in our understanding of Venus and helped advance our knowledge of planetary science.
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Can an object's average velocity equal zero when object's speed is greater than zero.
Assuming the same percent uncertainty and the same measurement device, what is the uncertainty in a blood pressure measurement of 93 mm Hg
The uncertainty in a blood pressure measurement of 93 mm Hg is 1.86 mm Hg.
The uncertainty in a blood pressure measurement of 93 mm Hg is directly dependent on the percent uncertainty and the measurement device. The percent uncertainty remains the same, and thus the percent uncertainty does not affect the absolute uncertainty, which is the actual amount of uncertainty expressed as a specific unit of measurement such as mm Hg. The uncertainty of a measurement device indicates the amount of error or variation that can be expected in the measurements.The absolute uncertainty in a measurement is the product of the percent uncertainty and the measurement.
Therefore, if the percent uncertainty is 2% and the measurement is 93 mm Hg, the uncertainty in the measurement is 1.86 mm Hg (0.02 × 93 = 1.86). This indicates that the actual measurement of blood pressure of 93 mm Hg could be anywhere between 91.14 mm Hg and 94.86 mm Hg, with an uncertainty of 1.86 mm Hg. Therefore, the uncertainty in a blood pressure measurement of 93 mm Hg is 1.86 mm Hg.
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why do we daydream during class
Answer:
Because we wish that a dragon would just destroy school and you can ride your new dragon to starbucks, you'll be famous!!! BUT THEN REALITY SMACKS YOU IN THE FACE WITH A STUPID STACK OF HOMEWORK!!!
Explanation:
Which one is it i need this for my credit recovery
Alex rides on a bike that starts from rest and accelerates to a speed of 20 m/s in 8 seconds. What is Alex’s acceleration? with steps please
Answer:
2.5m/s
Explanation:
a = \(\frac{(vf - vi)}{t}\)
vf = final velocity = 20m/s
vi = initial velocity = 0m/s (alex is starting "at rest")
a = acceleration =
t = time = 8s
a = \(\frac{(20-0)}{8 }\) = 2.5m/s
the human body is made primarily of water, which has a density of 1000 kg/m3. a certain woman weighs 119 pounds. one kilogram of mass weighs about 2.2 pounds.
The woman has a volume of approximately 0.05404 m3, which is primarily made up of water.
The conversion factor between pounds and kilograms is 1 pound = 0.45359237 kilograms. So, to convert the weight of the woman from pounds to kilograms, we can use the following calculation:
119 pounds * 0.45359237 kilograms/pound = 54.04 kilograms
The density of water is 1000 kg/m3, which means that a volume of 1 m3 of water weighs 1000 kilograms. To calculate the volume of the woman, we can divide her mass by the density of water:
Volume = Mass / Density = 54.04 kilograms / 1000 kg/m3 = 0.05404 m3.
So, the woman has a volume of approximately 0.05404 m3, which is primarily made up of water.
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What is the magnetic force on a particle that has 0.000500 C of charge and is moving at
2.50 10m/s to the right through a magnetic field that is 4.20 T and pointing away from
you? Specify both magnitude and direction in your answer.
Answer:
1.) F = 5.3×10^-3 N
2.) Positive y - direction
Explanation:
The parameters given are:
Charge q = 0.0005C
Velocity V = 2.5010 m/s
Magnetic field B = 4.2 T
Magnetic force F = BVqsinØ
F = BVq
since Ø = 90 degree
Substitute all the parameters into the formula
F = 4.2 × 2.5010 × 0.0005
Therefore, the magnetic force on a particle is F = 5.3 × 10^-3 N
2.) According to Fleming's left hand rule, the direction of the magnetic force will be perpendicular to the magnetic field which moving upward of the screen.
Answer:
it’s f=0.0005 x 2.5 x 10^5 x 4.20
F= 525 N
+ y direction (up)
Explanation:
got it right
Make a claim about the time interval between lunar phases.
I will mark as BRAINLIEST ✨
just pls help ASAP
due by 4:00pm
plss
Answer:
The Lunar month is the time period for the moon to complete ONE revolution around Earth. SIDEREAL MONTH: 27.3 days SYNODIC MONTH: 29.5 days
What is Nicolas would be the least likely to undergo radioactive decay?
A nucleus whose total mass is less than the sum of the masses of its individual particles.
What is a nucleus?
The centre of an atom contains the nucleus, a tiny, dense, positively charged organelle. It is composed of nucleons, which are protons and neutrons put together. Negatively charged electrons travel in shells or levels of energy around the nucleus.Because it controls an element's chemical properties, the nucleus is the distinguishing characteristic of an atom. The atomic number, also referred to as the number of protons in the nucleus, is what establishes an element's identity. For instance, all carbon atoms have six protons in their nucleus, compared to eight protons for all oxygen atoms.One of the four fundamental forces of nature, the strong nuclear force, keeps the nucleus together.To know more about nuclei, click the link given below:
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when a nucleus of 235u undergoes fission, it breaks into two smaller, more tightly bound fragments. t or f
The fragments reaction is 7.59 MeV/nucleon and 8.39 MeV/nucleon
What is nucleus ?
Neutrons and protons, which have opposite electric charges, make up atomic nuclei. The strongest basic force now understood, known as the strong force, is what holds these things together. A normal atom's nucleus generally holds more than 99.9% of the atom's mass yet takes up considerably less than.01 percent of its volume.
What is fission ?
When a neutron collides with a bigger atom, it excites it and causes it to split into two smaller atoms, which are known as fission products. This process is known as fission. A chain reaction might start as a result of additional neutrons that are also emitted. Huge amounts of energy are produced during the splitting of each atom.
1) m_proton + m_netron + m_electron - m_U
= 92*1.007276466812 + 92*5.4857990943e-4 + 143*1.008664916 - (235.0439299)
= 1.9151 u
= 931.494061 * 1.9151 MeV
= 1784 MeV
= 1784/235 = 7.59 MeV/nucleon
2) m_proton + m_netron + m_electron - m_Cs
= 55*1.007276466812 + 55*5.4857990943e-4 + 82*1.008664916 - (136.9070895)
= 1.2338 u
= 931.494061 * 1.2338 MeV
= 1149 MeV
= 1145/137 = 8.39 MeV/nucleon
Therefore, the fragments reaction is 7.59 MeV/nucleon and 8.39 MeV/nucleon.
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An astronaut's training centrifuge has a radius of 4.0m. If it goes round once every 2.5s, calculate the velocity of the end of the centrifuge arm (4.0m from the pivot).
Answer: 10.048m/s
Explanation:
We know that the radius is r = 4.0m
And for rotating things, the tangential velocity (or the velocity of the end of the centrifuge arm) can be calculated as:
v = r*w
The period is T = 2.5s,
This means that if sin(w*t) describes this situation, we have that:
sin(w*t) = sin(w*(t + T))
and we know that:
sin(w*0) = 0
sin(w*(0 + T)) = Sin(w*T) = 0
this means that w*T = 2*pi
w = 2*pi/T = 2*pi/2.5s = (2*3.14)/2.5 s = 2.512 hz
Then the velocity can be calculated as
v = r*w = 4.0m*2.512hz = 10.048m/s
Velocity is vector quantity because??
Velocity is vector quantity because it has both magnitude and direction.
Explanation:
velocity is a vector quantity because the person always returns to the original position,the motion would never result in a change in a position.
A 5 kg ball of clay is moving with a speed of 25 m/s directly toward a 10 kg ball of clay which is at rest. The two clay balls collide and stick together. What is their velocity immediately after the collision?
Answer:
8.3m/s
Explanation:
Given parameters:
mass of clay ball = 5kg
Speed of clay ball = 25m/s
mass of clay ball at rest = 10kg
speed of clay ball at rest = 0m/s
Unknown:
Velocity after collision = ?
Solution:
Since the balls stick together, this is an inelastic collision:
m1v1 + m2v2 = v(m1 + m2)
5(25) + 10(0) = v (5 + 10)
125 = 15v
v = 8.3m/s
how we will solve this question?
36.45cL=______=μL
Answer:
0.364
I believe... Good luck!
If the truck accelerates at 0.25 m/s 2 and the toolbox (which again does not slip from its spot) has a mass of 1.00 kg, what is the force of friction between the toolbox and the bed of the truck
Assuming the truck is moving in a straight line, the force of friction between the toolbox and the bed of the truck would be equal to the force required to accelerate the toolbox, which is approximately 0.25 N.
What is acceleration?Acceleration is the rate at which the velocity of an object changes over time. It can be calculated as the change in velocity divided by the time interval over which the change occurs.
What is force of friction?The force of friction is the force that opposes motion between two surfaces that are in contact with each other. It arises due to the interlocking of the rough surfaces and can be calculated using the coefficient of friction and the normal force.
To answer this question, we need to use Newton's second law, which states that the net force on an object is equal to its mass times its acceleration. In this case, the toolbox is not slipping, which means the force of friction between the toolbox and the bed of the truck is equal to the force pushing the toolbox forward.
The force pushing the toolbox forward is the product of its mass and acceleration, which is:
F = ma
F = (1.00 kg)(0.25 m/s²)
F = 0.25 N
Therefore, the force of friction between the toolbox and the bed of the truck is also 0.25 N, since the toolbox is not slipping.
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Tammy is a forensic investigator examining a body at a crime scene. She notes that the body is stiff but still flexible. What does she know about the time of death?
Answer:
It happened less than 8 hours ago.
Explanation:
Over the first eight hours, the body begins to stiffen but is still flexible.
A roller coaster car starts out at rest at the top of the first hill and reaches a speed of 10 m/s at the bottom of the hill. What is its speed when it is half-way down? Assume that the track is frictionless. Group of answer choices 5.0 m/s 7.1 m/s 6.3 m/s 20 m/s none of them
Its speed when it is half-way down is 7.1 m/s.
To determine the speed of the roller coaster car when it is halfway down the hill, we can use the principle of conservation of mechanical energy. At the top of the hill, the car possesses only potential energy, which is converted into kinetic energy as it descends.
Since the roller coaster car starts at rest at the top, all of its initial potential energy is converted into kinetic energy at the bottom of the hill. Therefore, we can equate the potential energy at the top to the kinetic energy at the bottom:
mgh = (1/2)mv²
Where m is the mass of the car, g is the acceleration due to gravity, h is the height of the hill, and v is the velocity at the bottom.
Since the velocity at the bottom is given as 10 m/s, we can solve for the height h using the above equation. Once we have the height, we can find the speed when the car is halfway down by finding the potential energy at that point and equating it to the kinetic energy:
(1/2)mv² = mgh/2
Since the mass and gravitational acceleration are constant, the height cancels out, and we are left with:
(1/2)v² = gh/2
Simplifying, we find:
v = √(gh/2)
Since we are halfway down the hill, the height h is halved. Thus, the speed when the car is halfway down is:
v = √(g(h/2)/2) = √(5gh/8)
Therefore, the speed when the car is halfway down the hill is given by the square root of 5/8 times the speed at the bottom.
In this case, since the speed at the bottom is 10 m/s, the speed halfway down the hill is:
v = √(5/8 * 10²) = √(500/8) ≈ 7.1 m/s
Therefore, the correct answer is 7.1 m/s.
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Is air in a balloon solid or gas?
gas is the answer for this question
can you make me a brainlist
Which object will have the most potential energy?
O 1 kg book, 2 m from the ground
O 5 kg book, 2 m from the ground
O 1 kg book, 0.5 m from the ground
O 5 kg book, 0.5 m from the ground
Answer: the most potential energy == 5 kg book, 2 m from the ground= 98 Joules
Explanation:
potential energy = m g h
m = mass
g = acceleration due gravity = 9.8 m/s²
h = distance above ground
1. Pe₁ = 1 kg x 2 m x g = 2 g
2. Pe₂ = 5 kg x 2 m x g = 10 g = 10 kg m x 9,8 m/s² = 98 Joules
3. Pe₃ = 1 kg x 0,5 m x g = 0,5 g
4. Pe₄ = 5 kg x 0.5 m x g = 2,5 g
10 > 2,5 > 2 >0,5
Consider the waves on a vibrating guitar string and the sound waves the guitar produces in the surrounding air. The string waves and the sound waves must have the same.
The waves on a vibrating guitar string and the sound waves the guitar produces in the surrounding air. The string waves and the sound waves must have the same frequency and wavelength
The distance between consecutive crests of a wave, particularly the points of an electromagnetic wave is known as its wavelength.
When a wave go from one medium to another medium then the velocity, and Amplitude changes. But there is no change in wavelength as well as the frequency of the wave .
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You are gardening in the peak of summer, it hasn't rained in a week, and your plants are looking rough. You decide to water the plants for an hour. The next day you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. With what you know from class, please try and explain what is happening to your plants.
In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.
However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.
It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.
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If the sun exploded would the solar system collaspe?
Answer:
Yes, yes it would since we need light
Explanation:
is a solar energy technology that uses unique properties of semiconductors to turn light into electricity
Solar energy technology utilizes the unique properties of semiconductors to convert sunlight into electricity. This process is called photovoltaic (PV) effect, where semiconductors, such as silicon, absorb photons from sunlight and release electrons.
These electrons are captured by an electric field, creating a flow of electricity. PV cells are grouped together to form solar panels, which can be installed on rooftops or large solar farms.
Solar energy is a clean, renewable, and sustainable source of power, reducing greenhouse gas emissions and reliance on fossil fuels.
Moreover, advancements in semiconductor materials and manufacturing techniques have improved the efficiency and affordability of solar technology, making it more accessible for a wide range of applications.
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Two waves with Amplitude of 75 units and 74 units arrive at a point in a medium simultaneously. If the two waves are out of phase with each other what is the resultant amplitude of the wave
Answer:
Resultant amplitude = 1 unit.
Explanation:
The amplitude of a wave is its maximum displacement during propagation.
Since the two waves are out of phase, the resultant amplitude can be determine by;
Resultant amplitude, \(A_{R}\) = \(\sqrt{A_{1} ^{2} + A_{2} ^{2} + 2A_{1} A_{2}cos \alpha }\)
= \(\sqrt{(A_{1} - A_{2} )^{2} }\)
= \(A_{1}\) - \(A_{2}\)
where \(\alpha\) is the phase difference.
Given that: \(A_{1}\) = 75 units, \(A_{2}\) = 74 units, so that;
\(A_{R}\) = 75 - 74
= 1
The resultant amplitude of the two wave when out of phase is 1 unit.
Answer:
Resultant amplitude = 1 unit.
Explanation:
The amplitude of a wave is its maximum displacement during propagation.
Since the two waves are out of phase, the resultant amplitude can be determine by;
Resultant amplitude, =
=
= -
where is the phase difference.
Given that: = 75 units, = 74 units, so that;
= 75 - 74
= 1
The resultant amplitude of the two wave when out of phase is 1 unit.
Consider a car speeding up as it drives along a level road. what is an action-reaction pair (from newton’s third law)?
Newton's third law of motion states that for every action, there is an equal and opposite reaction. The action-reaction pair is used to describe the interaction between two objects. Therefore, when a car is speeding up as it drives along a level road, an action-reaction pair occurs.
An action-reaction pair is a pair of forces that are equal in strength and opposite in direction. When an object exerts a force on another object, the second object exerts an equal and opposite force on the first object. The action-reaction pair when a car speeds up as it drives along a level road can be explained as follows: Action force: The car exerts a force on the road in the forward direction. This is the action force. Reaction force: The road exerts a force on the car in the backward direction. This is the reaction force.
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A man with a mass of 60 kg rides a bike with a mass of 13 kg. What is the force needed to accelerate the bike at 0.90 m/s2?
A. 65.7
B.657
C.75.6
D.756
Which action can be explained by physics?
Answer:
Actions that underlie mathematical rules, patterns or probability distributions.
For example how fast something falls at any given point or time.
More complex actions, such as human decision making in single individuals would be way too complicated to describe in physical terms.
But note that there can be physical models of such things as traffic when we can assume statistical knowledge of behavior.
Also physical models are used to plan such things as emergency exits in big stadiums, because many thousands of people can be described as particles flowing under a given pressure.
Every time we can gain good statistical knowledge and can therefore see patterns and rules in action, we can build theoretical models to make predictions and simulations (and games btw)
Since it's fair to say that mathematics is the science of patterns, it is plausible that physical descriptions often come in mathematical formulations, so that it can be understand as an efficient language of physics.
Neighboring disciplines like chemistry relay on physical theories to build on them,and then add shortcuts to fit their needs and interests, generating an own language for their field of study. But physicists may refer to them as anadd-on to physics.
Physics can basically explain all actions wich you can express in numbers.
But note that on a fundamental level physics describes 'how' things work, not necessarily 'why' they do it this way. The source of the basic and most fundamental physical constants and rules remains a mystery till this day.But of course there are theories on that as well, wich mostly can neither be proved or falsified.
The text is my own work and based of my general knowledge and quintessence of lectures on physics and other fields I attended.
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