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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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2 years ago

Please help, and show steps. Thank you very much!

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V = 8 * 10^2 km/h = 800km/h
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t = ?
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3 years ago

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Answer:

$\large \boxed{\text{h. 20 000 N}}$

Explanation:

Force is the change in momentum over time

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2. Calculate the force

$\begin{array}{rcl}F & = & \dfrac{\Delta p}{\Delta t}\\\\& = & \dfrac{-10 000 \text{ kg$\cdot$m$\cdot$ s}^{-1}}{\text{ 0.5 s}}\\\\& = & \textbf{-20 000 N}\\\end{array}\\\text{The negative sign shows that the force is exerted opposite to the direction of motion.}\\\text{The magnitude of the force is $\large \boxed{\textbf{20 000 N}}$}$

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Read 2 more answers