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Mice21 [21]
4 years ago
8

PLZ HELP!!! Detailed PLZ!

Physics
1 answer:
Korolek [52]4 years ago
5 0

Answer:

Potential Energy = 294J, Kinetic Engergy = 48.02J

Explanation:

We have these formulas:

Potential Energy = mass * gravitational force * height (m) = 1 * 9.8 * 30 = 294(J)

Kinetic Energy = 1/2 * mass * velocity^2 = 1/2 * 1 * 9.8^2 = 48.02 (J)

As the rock falling at an acceleration of 9.8m/s^2 which means for each second, the rock increases 9.8m/s. I think we are missing time to find the instantaneous velocity, the formula is (initial displacement - final displacement)/ (initial time - final time) which will directly give the final answer for you.

 

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What is the temperature of a system in thermal equilibrium with another system made up of water and steam at one atmosphere of p
Evgen [1.6K]

Full Question:

What is the temperature of a system in thermal equilibrium with another system made up of water and steam at one atmosphere of pressure?

A) 0°F

B) 273 K

C) 0 K

D) 100°C

E) 273°C

Answer:

The correction Option is D) 100°C

Explanation:

The temperature above is referred to as the critical point.

it is the highest temperature and pressure at which water (which has three phases - liquid, solid, and gas) can exist in vapor/liquid equilibrium. If the temperature goes higher than 100 degrees celsius, it cannot remain is liquid form regardless of what the pressure is at that point.

There is also a condition under which water can exist in its three forms: that is  

- Ice (solid)

- Liquid (fluid)

- Gas (vapor)

That state is called <em>triple point. </em>The conditions necessary for that to occur are:

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Cheers

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3 years ago
Carrying Capacity is...?
Elodia [21]
Carrying capacity is the maximum amount of individuals a space can hold.
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How much brighter is a Sun-like star than the reflected light from a planet orbiting around it?
zloy xaker [14]

Answer:

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2. A 200.0-kg bear grasping a vertical tree slides down at constant velocity. What is the friction force between the tree and th
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Answer: 1960 N

Explanation:

The bear is sliding down at constant velocity: this means that its acceleration is zero, so the net force is also zero, according to Newton's second law:

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F_{net}=W-F_f=0

From the previous equation, we find that the frictional force is equal to the weight of the bear:

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3 years ago
The rms current output in a circuit is 7.75 A. What is the maximum current?
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