10. A flashlight runs on a battery. If the light is left on the battery runs out and the flashlight
stops working. Which claim best describes what has happened to the battery's energy?
Answers
Related Questions
When a boxer is moving away from a punch, the force experienced is reduced because .
Answers
When a boxer is moving away from a punch, the force experienced is reduced because the time of impact is increased.
What is force?The force of a punch is a product of mass and acceleration. The mass of the boxer and the fist of the opponent are constant, so the acceleration of the punch is also constant. However, if the boxer moves away from the punch, the distance that the fist has to travel to make contact with the boxer's body increases. As a result, the time of impact is longer, and the force is spread out over a longer period. This means that the force of the punch is reduced and is less likely to cause injury or knock the boxer down.
In addition, moving away from a punch can also reduce the accuracy of the punch, as the opponent's punch may miss its intended target due to the change in distance between the two boxers.
Learn more about force, here:
https://brainly.com/question/13191643
#SPJ1
when an astronomer rambles on and on about the luminosity of a star she is studying, she is talking about:
Answers
When an astronomer rambles on and on about the luminosity of a star she is studying, she is talking about the amount of energy the star gives off each second.
Luminosity and apparent brightness are about brightness, but from a different point of view. The difference between luminosity and apparent brightness is that luminosity tells us exactly how bright a star really is while apparent brightness only tells us its brightness seen from Earth.
L / Lsun = ( d / dsun )² = b / bsun
L = Luminosity of a star
Lsun = Luminosity of sun
d = Distance of star
dsun = Distance of sun
b = Brightness of star
bsun = Brightness of sun
Therefore, when an astronomer rambles on and on about the luminosity of a star she is studying, she is talking about the amount of energy the star gives off each second.
To know more about luminosity
https://brainly.com/question/13945214
#SPJ4
the electric motor of a model train accelerates the train from rest to 0.720m/s in 22.0milliseconds (ms). the total mass of the train is 875g. Find the average power delivered to the train during its acceleration.
Answers
To find the average power delivered to the train during its acceleration, we need to use the formula:
Power = Work / Time
First, we need to find the work done on the train during its acceleration. We can use the formula:
Work = Force x distance
The force on the train is equal to its mass times its acceleration:
Force = Mass x Acceleration
Using the given values, we get:
Force = 0.875 kg x (0.720 m/s^2) = 0.63 N
The distance the train travels during its acceleration can be found using the formula:
Distance = (1/2) x Acceleration x Time^2
Plugging in the given values, we get:
Distance = (1/2) x 0.720 m/s^2 x (22.0 x 10^-3 s)^2 = 0.17 m
So the work done on the train during its acceleration is:
Work = 0.63 N x 0.17 m = 0.1071 J
Now we can plug this value into the formula for power:
Power = Work / Time
The time given is 22.0 milliseconds, which is 0.0220 seconds:
Power = 0.1071 J / 0.0220 s = 4.87 W
Therefore, the average power delivered to the train during its acceleration is 4.87 watts.
To know more about acceleration :
https://brainly.com/question/29135987
#SPJ11
a speed swimmer love to race around the parks pine which is 25m around if she can swim 20 laps in 7200s what is her average speed?
Answers
Answer:
the average speed of the swimmer is 0.069 m/s.
Explanation:
Given;
complete distance around the park pine, d = 25 m
total lap completed, = 20 laps
time of laps completion, t = 7200 s
The total distance completed by the swimmer = 20 x 25 = 500 m
The average speed of the swimmer = distance / time
= (500 m) / (7200 s)
= 0.069 m/s.
Therefore, the average speed of the swimmer is 0.069 m/s.
A spring with a constant K is pulled back a distance X and allowed to oscillate with a period T on a horizontal frictionless surface. As the mass passes through the equilibrium positions the force of the spring is
Answers
As the mass passes through the equilibrium positions the force of the spring is increasing.
Simple harmonic motion is a specific kind of periodic motion of a body that arises from a dynamic equilibrium between an inertial force that is proportional to the body's acceleration away from the static equilibrium position and a restoring force on the moving object that is directly proportional to the magnitude of the object's displacement and acts towards the object's equilibrium position. Oscillating spring perform SHM.
as the mass passes through the equilibrium position, at the equilibrium position the force is zero and it increases with increase in displacement x according to the relation F = kx.
To know more about Spring :
https://brainly.com/question/14670501
#SPJ4.
How long would it take for someone to bike to school if the school is 10 km away and the
cyclist is riding at 5 km/hr
Answers
Answer:
It would take the cyclist 2 hours to cycle to school.
Explanation:
5km/hr for 2 hours would be 10km.
dont skip and pls help ASAP bc if you do i will give 10 pts + brainliest but pls hurry
Answers
ANSWER
Mass: The resistance of an object to acceleration, size-dependent
Volume: The amount of space an object occupies
Boiling point: The temperature at which a liquid boils and turns to vapor.
Melting point: The temperature at which a solid melts and turns to liquid
Density: Size-independent
Solubility: The ability of a substance (solvent) to dissolve when placed in a liquid (solute)
Magnetism: Size-dependent
EXPLANATION:
Mass: the more mass something has, the harder it is to accelerate. This is somewhat intuitive, but is also demonstrated in newton's third law. It's size-dependent because for an object of a given density, the size (volume) will change the mass.
Volume: big objects take up more space. If you put an apple in bucket filled to the brim with water, a little water will splash out, because the apple is now occupying the space that the water used to, but if you put in a watermelon, a lot of water will splash out, because the watermelon is taking up even more space.
Boiling point: when a liquid gets too hot, it will change to gas (example: water to steam)
Melting point: when a liquid gets too cold, it will change to a solid (example: water to ice)
Density: how much mass there is in a given volume. A sphere made of lead will have more mass than a sphere made of wood, even if they are the same size. Size-independent because a big lead sphere has the same density as a small lead sphere, they just have different masses.
Solubility: some substances dissolve in certain solvents, other's don't.
Magnetism: size-dependent because a bigger magnet is stronger than a smaller one if they are identical in every other way. More space means more domains means a stronger magnet.
Answer:
i agree
Explanation:
An electric motor is used to hoist building supplies from the ground to the roof of a building.
A. How much work can the motor do in 12 seconds if its power output is 1.5 KW (1500 W)?
B. How high can it lift a 131 kg bundle of shingles in that time?
Answers
A) The motor can do 18,000 joules of work in 12 seconds. B) The motor can lift the 131 kg bundle of shingles to a height of approximately 13.43 meters in 12 seconds.
A. To calculate the work done by the motor, we can use the formula:
Work = Power × Time
Given that the power output of the motor is 1.5 kW (1500 W) and the time is 12 seconds, we can substitute these values into the formula:
Work = 1500 W × 12 s = 18,000 J
B. To determine how high the motor can lift a 131 kg bundle of shingles, we need to consider the gravitational potential energy associated with raising the bundle. The formula for gravitational potential energy is:
Potential Energy = Mass × Gravity × Height
In this case, the mass is 131 kg and gravity is approximately 9.8 m/s². We need to find the height, so we rearrange the formula:
Height = Potential Energy / (Mass × Gravity)
Since the work done by the motor is equal to the potential energy gained by the bundle, we can substitute the work (18,000 J) into the formula:
Height = 18,000 J / (131 kg × 9.8 m/s²) ≈ 13.43 m
For such more questions on work
https://brainly.com/question/1634438
#SPJ8
There is a solenoid with an inductance 0.285mH, a length of 36cm, and a cross-sectional area 6×10−4m2. Suppose at a specific time the emf is -12.5mV, find the rate of change of the current at that time.
Answers
The rate of change of current at the specific time is -43.86 A/s.
What is the rate of change of the current?
The emf induced in a solenoid is given by the equation emf = -L(dI/dt), where L is the inductance of the solenoid, I is the current flowing through it, and t is time. Rearranging the equation to solve for the rate of change of current, we have \(dI/dt = -emf/L.\)
Substituting the given values, we have \(emf = -12.5 mV = -0.0125 V\) and\(L = 0.285 mH = 0.000285 H\). Thus, the rate of change of current is:
\(dI/dt = -emf/L = -(0.0125 V) / (0.000285 H) = -43.86 A/s\)
Therefore, the rate of change of current at the specific time is -43.86 A/s.
Learn more about solenoid
brainly.com/question/21842920
#SPJ11
An ambulance is generating a siren sound at a frequency of 2,400 Hz. The speed of sound is 345. 0 m/s. The observer is traveling at a velocity of 24. 00 m/s toward the ambulance and the ambulance is traveling at a velocity of 24. 00 m/s toward the observer. What is the frequency of the siren perceived by the observer
Answers
The frequency of the siren perceived by the observer be 2759 Hz.
What is Doppler effect?
When a wave source is moving relative to an observer, the Doppler effect or Doppler shift is a phenomena that can be seen. A typical physical illustration of the Doppler Effect is when an ambulance crosses you while its siren is on. Let's take a closer look at the Doppler effect's nuances in this post.
Frequency of sound; f = 2400 Hz.
speed of sound; v = 345. 0 m/s
The observer is traveling at a velocity: \(v_o\) =24. 00 m/s toward the ambulance.
The ambulance is traveling at a velocity \(v_s\) = 24. 00 m/s toward the observer.
So, according to Doppler effect, the frequency of the siren perceived by the observer:
f₁ = \(\frac{v + v_o}{v - v_s}\)f
= (345 + 24)/(345 - 24) × 2,400 Hz.
= 2759 Hz.
Hence, The frequency of the siren perceived by the observer be 2759 Hz.
Learn more about Doppler effect here:
https://brainly.com/question/15318474
#SPJ1
Why is an element considered a pure substance?
im i right
An element is considered a pure substance because it is made up of only one type of atom and cannot be broken down into a simpler form.
Answers
Answer:
Explanation:
right
please help me i neeed help with all threeas soon as possible thank you
Answers
Answer:
4b: comets
5a: supercluster
5b: they just changed 4b's solar system for milky way. I think it is still comets. if not, then just say black holes.
A crate slides down a ramp that makes a 20∘ angle with the ground. To keep the crate from sliding too fast, Paige pushes back on it with a 69 N horizontal force.
A) How much work does Paige do on the crate as it slides 3.3 m down the ramp?
Answers
,Paige does 182.9 J of work on the crate as it slides 3.3 m down the ramp.
To determine the work done by Paige on the crate as it slides down the ramp, we need to calculate the component of Paige's force that is parallel to the direction of motion of the crate. This component will do work on the crate by exerting a force in the same direction as the crate's displacement.
We can first calculate the weight of the crate, which is given by
W = mg
where m is the mass of the crate and g is the acceleration due to gravity. We can assume that the crate is on a frictionless surface, so the force of friction is zero. Therefore, the weight of the crate is the only force acting on it parallel to the ramp. Using the angle of the ramp, we can calculate the component of the weight that is parallel to the ramp:
F_parallel = mg sin θ
where θ is the angle of the ramp, which is 20∘. We can also calculate th
m = W/g
where g is the acceleration due to gravity, which is 9.81 m/s^2.
Substituting the values, we get:
m = (F_parallel/sin θ)/g
m = (mg sin θ/sin θ)/g
m = g
Therefore, the mass of the crate is equal to g.
Next, we can calculate the force applied by Paige, which is given by:
F_applied = 69 N
Since Paige is pushing back on the crate, her force is in the opposite direction of the crate's motion, so we need to calculate the negative of F_parallel. Therefore, the net force acting on the crate is:
F_net = F_applied - F_parallel
F_net = 69 N - g sin θ
Finally, we can calculate the work done by Paige on the crate using the formula:
W = F_net d
where d is the distance traveled by the crate, which is 3.3 m. Substituting the values, we get:
W = (69 N - g sin θ) x 3.3 m
Using the value for g and θ, we get:
W = (69 N - 9.81\(m/s^2\)x sin 20∘) x 3.3 m
W = 182.9 J
Learn more about gravity here:
https://brainly.com/question/31321801
#SPJ11
A stone of mass 10kg fall from the height of 2m.calculate the workdone
Answers
The work done is 196 J.
The amount of work done upon an object depends upon the amount of force (F) causing the work, and the displacement (d) experienced by that object.
The mass of the stone is m=10kg
It is falling from the height of 2m i.e. its displacement is 2m.
Work done by an object is given by:
W=Fs
Where 'F' is the force and 's' is the displacement.
As the body moves in the direction of force, therefore work done by gravitational force will be positive.
W = Fs
= mgh
= 10 × 9.8 × 2
= 196 J
Hence, the work done is 196 J.
Read more about Work done related problems:
https://brainly.com/question/8119756
I need to know how to solve: finding magnitudes of forces related to a sum of three vectors
Answers
The solution is (v, u) = (- 585.709, 593,034). Please notice that the value of v only means that the direction of the real vector is antiparallel to the supposed one.
What are the magnitudes of two vectors to get the zero vector by vector sum?
According to the definition of vector sum and vectors in rectangular form, we must solve the following vector equation:
(0, 0) = 205 · (cos 23°, - sin 23°) + v · (- cos 75°, sin 75°) + u · (- cos 55°, - sin 55°)
(0, 0) = (188.703, 80.100) + v · (- 0.259, 0.966) + u · (- 0.574, 0.819)
(- 188.703, - 80.100) = v · (- 0.259, 0.966) + u · (- 0.574, 0.819)
Then, we must solve the following system of linear equations:
- 0.259 · v - 0.574 · u = - 188.703
0.966 · v + 0.819 · u = - 80.100
The solution is (v, u) = (- 585.709, 593,034). Please notice that the value of v only means that the direction of the real vector is antiparallel to the supposed one.
To learn more on vectors: https://brainly.com/question/13322477
#SPJ1
Differences in temperature change part2
Answers
Explanation:
cold,hot,warm,room tempature i dont know what you needed help with but here you go:)
Which of the following units are equivalent to those of motional emf?
a)T x m/s
b)V x m^2/s
c)J/s
d)A x O
e)T x m
Answers
The units that are equivalent to those of motional emf are b) V x m^2/s and e) T x m.
Motional emf is the electromotive force generated in a conductor when it moves through a magnetic field or when a magnetic field changes within a stationary conductor. The motional emf is given by the equation EMF = B * v * l, where B is the magnetic field strength, v is the velocity of the conductor, and l is the length of the conductor perpendicular to the magnetic field.
In terms of units, the magnetic field strength B is measured in Tesla (T), velocity v is measured in meters per second (m/s), and length l is measured in meters (m). Multiplying these units together, we get T x m/s x m = T x m, which is equivalent to option e.
Additionally, the product of voltage (V) and area (m^2) divided by time (s) gives the units of V x m^2/s, which is also equivalent to motional emf. This is because voltage represents the potential difference across the conductor, and the product of voltage and area divided by time gives the rate of change of magnetic flux, which induces the motional emf.
To learn more about emf, click here:
brainly.com/question/30893775
#SPJ11
Suppose you double the temperature of a gas at constant volume. Do the following change? If so, by what factor?
a. The average translational kinetic energy of a mole cule.
b. The rms speed of a molecule.
c. The mean free path.
Answers
a. The average translational kinetic energy of a molecule doubles.
b. The rms speed of a molecule increases by a factor of √2.
c. The mean free path does not change.
a. When you double the temperature of a gas at constant volume, the average translational kinetic energy of a molecule also doubles. This is because the average kinetic energy is directly proportional to the temperature (KE_avg = 3/2 * k * T, where k is Boltzmann's constant and T is temperature).
b. The rms (root-mean-square) speed of a molecule increases by a factor of √2. This is because the rms speed is related to the temperature as v_rms = √(3kT/m), where m is the mass of a molecule. Doubling the temperature means you multiply the rms speed by √2.
c. The mean free path does not change when you double the temperature of a gas at constant volume. This is because the mean free path is determined by the density of gas particles and their size, both of which remain constant in this scenario.
To know more about the translational kinetic energy, click here;
https://brainly.com/question/31799833
#SPJ11
A plate moves 200 m in 10,000 years. What is its rat in cm/year
Answers
Answer:
2cm/year
Explanation:
20000/10000=2cm/year
How much pressure is created by a circular piston that is 0.24 meter in diameter
with a Force of 200.0 N? N/m2 ... (round answer to nearest ones place -no decimal)
Answers
Answer:
4000 N/m²
Explanation:
Area = πr²
Area = π x 0.12² (diameter/2)
Area = 0.05 m²
Pressure = force/area
Pressure = 200/0.05
Pressure = 4000 N/m²
Hope this helps!
what 3 things are produced as a result of the fusion of two atoms
Answers
Answer:
Electron, proton and neutron
Explanation:
In each and every atom they are consist of electron, proton and neutron.
Helpppp
What occurs when someone places an ice pack on an injured ankle?
A. Conduction causes ice pack to lose thermal energy.
B. Conduction causes the ankle to gain thermal energy.
C. Cold from the ice pack is transferred to the ankle.
D. Heat from the ankle is transferred to the ice pack.
Answers
i'll give brainliest!!! please help asap!!!
Which of the following electromagnet will have the strongest force?
1: A battery with no loops or wire around the nail
2: A battery with 10 loops of wire around the nail
3: A battery with 3 loops of wire around the nail
4:A battery with 15 loops or wire around the nail
Answers
Answer:
4:A battery with 15 loops or wire around the nail
Explanation:
More loops equals more force
A battery with \(15\) loops or wire around the nail have the stronger force.
So, option 4 is correct.
Define electromagnet.An electromagnet is a system that contains of a magnetic encircled by a coil that conducts an electric current to ionize the core.
Wherever controllable magnetism are required, such as in devices where the magnetic flux must be adjusted, reversed, or turned on and off, an electromagnet is utilized.
A battery with \(15\) loops or wire around the nail have the stronger force.
So, option 4 is correct.
Find out more information about magnet here:
https://brainly.com/question/13026686?referrer=searchResults
How do collisions affect the momentum of objects?
HELP ASAP
Answers
Answer:
Since the two colliding objects travel together in the same direction after the collision, the total momentum is simply the total mass of the objects multiplied by their velocity.
Explanation:
Use DeMorgan's Theorem, as well as any other applicable rules of Boolean algebra, to simplify the following expression so there are no more complementation bars extending over multiple variables: \[ \
Answers
The expression to be simplified is, A + BC + ABCD. Using De Morgan's theorem, we can convert complementation bars extending over multiple variables into complementation bars over single variables. The De Morgan's theorem states that the complement of a product is equal to the sum of complements. De Morgan's Theorem:
1. (AB) = A + B2. (A + B) = A B The steps to simplify the given expression using De Morgan's theorem are as follows: A + BC + ABCD = A + (BC + ABCD) = A + (BC). (ABCD) = A + (B + C) (A + B + C + D) = A + AB + AC + BC + BD = A + AC + BC + BD.
Hence, the simplified expression is A + AC + BC + BD. Thus, using DeMorgan's Theorem and other applicable rules of Boolean algebra, the given expression is simplified to A + AC + BC + BD.
To know more about Morgan's Theorem here:
https://brainly.com/question/33579332
#SPJ11
What is the mechanical advantage ????
Answers
Answer:
the advantage gained by the use of a mechanism in transmitting force specifically : the ratio of the force that performs the useful work of a machine to the force that is applied to the machine.
Explanation:
Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device trades off input forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever.
what is parking orbit?
Answers
Hope this helps!
Have a great day :)
Answer:
A temporary orbit in which a spacecraft awaits the next phase of its mission .
Do all waves travel at the same speed in different materials
Answers
No, not all waves move through various materials at the same pace. The characteristics of the medium itself, the kind of wave, and the frequency of the wave are only a few of the variables.
that affect how quickly a wave moves through a given medium. Sound waves, for instance, go through various materials at varying rates, depending on the density and elasticity of the medium. In general, solids transmit sound more quickly than liquids or gases do. Similar to how sound waves go through various materials at various rates, depending on the refractive index of the medium. Light waves, for example, constantly travel in a vacuum at a constant speed of around 299,792,458 meters per second (or about 186,282 miles per second). Nevertheless, as they go on.
learn more about speed here:
https://brainly.com/question/28224010
#SPJ4
please help me with this, This is very important for me
Answers
Answer:
(a) parallel circuit
(b) (i) ammeter (ii) current
Hope this helps!
The Big Bang theory is closely linked to Hubble's discovery that the universe is expanding, which seems to imply that there was a time in the past when the expansion first began. Nevertheless, the Big Bang theory did not gain widespread acceptance among scientists until the 1960s. Why wasn't expansion alone enough to convince scientists that the Big Bang really happened
Answers
Answer:
Although expansion seems to imply a Big Bang, no other specific predictions of the Big Bang theory were tested and confirmed until the 1960s.
Explanation:
Answer:
Today, the consensus among scientists, astronomers and cosmologists is that the Universe as we know it was created in a massive explosion that not only created the majority of matter, but the physical laws that govern our ever-expanding cosmos. This is known as The Big Bang Theory. For almost a century, the term has been bandied about by scholars and non-scholars alike. This should come as no surprise, seeing as how it is the most accepted theory of our origins.
;)