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3 years ago

How does free energy challenge the scientific definition of energy?

1 answer:

7 0

Free Energy is a thermodynamic quantity given by the subtraction between the internal energy of a system and the product of its absolute temperature and entropy.
 In physics, the ability to do work.

I may not be completely sure but compare those 2 things together and you should find your answer.

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What is the difference between free fall and weightlessness

TiliK225 [7]

Free fall means your falling because of gravity and weight and will eventually hit the ground without any protection. weightlessness means a place or time where there is no gravity and you're floating and not falling.

3 0

3 years ago

Read 2 more answers

A compressed spring is compressed between a 5kg and 3 kg cart, respectively. When the spring is released, what will be the same

stira [4]

The momentum of the two carts will be the same

Explanation:

First of all, we notice that the system consisting of the two carts + the spring is an isolated system: this means that there are no external forces acting on it.

As a result, the total momentum of the system must be conserved.

Since the spring is at rest, the total momentum of the system after the two carts are released is:

$p_f = p_1 + p_2$

where

$p_1$ is the momentum of the 1st cart

$p_2$ is the momentum of the 2nd cart

The total momentum of the system at the beginning, when the spring is compressed, is zero:

$p_i=0$

Since the total momentum must be conserved, we have:

$p_i = p_f\\0 = p_1 + p_2\\\rightarrow p_2 = -p_1$

Which means that the two carts will have equal and opposite momenta.

Learn more about momentum:

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#LearnwithBrainly

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3 years ago

A rocket with a weight of 8,000 N is accelerated vertically at 12.0 m/s/s.

sergeinik [125]

Quit cheating and figure it out your self, the app wasn’t made to cheat it was made to help.

3 0

3 years ago

What will happen to the pitch of a sound as that sound’s source approaches an observer? Explain why this happens, based on what

I am Lyosha [343]

The pitch of a sound is decreased, when a sound source approaches the observer.

Explanation:

Pitch is nothing but it is a property that helps to determine whether the sound is high or low. Doppler effect helps to understand this concept easily. The pitch of the sound is mainly calculated based on the frequency of the sound wave arose from the sound source.

As the wellspring of sound waves moves toward an audience, the sound waves draw nearer together, expanding their recurrence and the pitch of the sound.

8 0

3 years ago

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Define equilibrium and explain first condition of equilibrium. Pease make it fast...

Semenov [28]

Answer:

First Condition of Equilibrium

For an object to be in equilibrium, it must be experiencing no acceleration. This means that both the net force and the net torque on the object must be zero. Here we will discuss the first condition, that of zero net force. ... Fnet=0 F net = 0.

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3 years ago