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3 years ago

A(n) ________ system is one in which energy moves freely in and out, but no matter enters or leaves the system.

Physics

2 answers:

alexandr1967 [171]3 years ago

6 0

Answer:

A closed system is one in which energy moves freely in and out, but no matter enters or leaves the system.

Explanation:

In physics, a closed system refers to those that don't aloud certain specific transfer. In this case, a closed system only alows transfer of energy, but transfer of mass is not.

In other words, all systems that don't exchange mass, just energy, they are called closed systems.

It's important to notice that a closed system is not the same as an isolated system, because the last one doesn't a low any kind of transfer, not even mass. That's the difference.

Therefore, in this case, the word that completes the given statement is closed.

3241004551 [841]3 years ago

4 0

A CLOSED SYSTEM. In a closed system in which energy moves freely in and out, but no matter enters or leaves.

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26. The equation E=hf describes the energy of each photon in a beam of light. If Planck’s constant, h, were larger, would photon

Elenna [48]

The equation of the energy of a photon is E=h*f.

If we increase the Planck's constant h, the energy would increase.

For example, lets double the value of Planck's constant and name it H:

H=2*h. Now lets put that into the equation for energy that we will call E₂:

E₂=H*f=2*h*f=2*E.

So we can clearly see that E₂=2*E or that if we double Planck's constant, the energy also doubles.

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3 years ago

Mr. Smith used 606 kWh for the month. If the service charge was $61.37 (see back page of the bill), what is the approximate char

Murrr4er [49]

Answer:

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Explanation:

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3 years ago

Identify two structural characteristics specific to muscle tissue.

Semmy [17]

Answer:

Explanation:

Muscle cells are excitable; they respond to a stimulus.meaning they can shorten and generate a pulling force. When attached between two movable objects, such as two bones, contraction of the muscles cause the bones to move.It contains protein fibers which contract to make the cell shorter.

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2 years ago

Read 2 more answers

Whats 6 3/7 ×1 5/9.

aniked [119]

6 3/7 * 1 5/9
45/7 * 14/9
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10

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3 years ago

Read 2 more answers

A 0.73-m aluminum bar is held with its length parallel to the east-west direction and dropped from a bridge. Just before the bar

Tasya [4]

Answer:

A) B = 5.4 10⁻⁵ T, B) the positive side of the bar is to the West

Explanation:

A) For this exercise we must use the expression of Faraday's law for a moving body

fem = $- \frac{d \phi }{dt}$

fem = $- \frac{d (B l y}{dt}= - B l v$ - d (B l y) / dt = - B lv

B = $- \frac{fem}{l \ v}$

we calculate

B = - 7.9 10⁻⁴ /(0.73 20)

B = 5.4 10⁻⁵ T

B) to determine which side of the bar is positive, we must use the right hand rule

the thumb points in the direction of the rod movement to the south, the magnetic field points in the horizontal direction and the rod is in the east-west direction.

Therefore the force points in the direction perpendicular to the velocity and the magnetic field is in the east direction; therefore the positive side of the bar is to the West

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3 years ago