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3 years ago

What does not affect the gravitational potential energy of an object

2 answers:

8 0

Anything really like velocity? as long as its not mass, gravity, and height

Ep = mgh

Those are the only variables that affect potential energy

alisha [4.7K]3 years ago

3 0

Answer:

As we know that gravitational potential energy is

U = mgh

so it is independent of the speed of object. So speed of object will not affect the gravitational potential energy.

Explanation:

As we know that at any height from the ground the potential energy of the mass is given by

$U = mgh$

so potential energy depends on

1) mass of object(m)

2) acceleration due to gravity(g)

3) height from the earth surface(h)

So here we can say that gravitational potential energy is independent of the speed of object with which it is moving

so here the parameter that will not effect the gravitational potential energy is the speed of object

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It takes 8 seconds for a pulley system to lift a load that weights 400N to a height of 10 m. How much power is required?.

mariarad [96]

Answer:

C. 500 watts

Explanation:

power is defined as the rate of work done

$power=\frac{work.done}{time}$

When a force causes a object to move, work is being done on the object by the force.

$work.done=force*displacement\\=400*10\\=4000J$

$power=\frac{4000J}{8s}\\=500 W$

3 0

4 years ago

A system consists of N particles that can occupy two energy levels: a nondegenerate ground state and a three-fold degenerate exc

cupoosta [38]

Answer:

Ng = 0.893 N, Ne = 0.107N

Explanation:

Number of particles in Ground state = Ng

Number of particles in Excited state = Ne

Ne/Ng = e^{(-ΔE)/kt}

Since excited state is 3 fold degenerate

Ne/Ng =3 x e^{(-ΔE)/kt}

ΔE = Energy difference between ground and excited states = 0.25eV

T = 960 K

Constant k = 8.617 x 10^-5 eV/K

Ne/Ng = 3 x e^{-0.25/(8.617x10^-5) x 960}

= 3 x e^(-3.188645)

= 3 x 0.0412 = 0.1237 ≅ 0.12

Ne = 0.12 Ng

but Ne + Ng = N, where is N is total number of particles, substituting Ne into equation we get,

Ng(1 + 0.12) = N

Ng = N/1.12 = 0.893N

and Ne = 0.12 x 0.893 N = 0.107 N

3 0

3 years ago

Many organisms on Earth exhibit similar ____________.

valentinak56 [21]

Answer:

The correct answer is - Characteristics.

Explanation:

On Earth, there are many organisms that shared similar characteristics with other organisms in various ways. These similarities of the characteristics could result from similar habitat, common ancestor, similar function, genetics, and many other reasons.

The example of such shared characteristics are different kinds of birds that have wings and lay eggs, while mammals give birth to babies and many other traits and characteristics. On the basis of the traits and characteristics organisms shared they are grouped and classified.

7 0

3 years ago

A 6.00 kg box is resting on a table. What is the magnitude of the normal force of the table on the box?

Amiraneli [1.4K]

Answer:

to get it u have to multiple 6=00 time 89 to get the number 21 than plus it by 22 what is 31

6 0

3 years ago

A 405 Hz tuning fork and a piano key are struck together, and no beats are heard. When a 402 Hz tuning fork and the same piano k

NeX [460]

The difference between the frequencies of the piano key and the tuning fork gives the frequency of the beats.

When the tuning fork is 405 Hz, and no beats are heard, then the piano key is also 405 Hz.

When the piano key is 405 Hz and the tuning fork is 402 Hz, then 405 - 402 = 3 beats are heard.

The piano key is 405 Hz.

4 0

4 years ago