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3 years ago

Which statement best describes an isolated system?

Physics

2 answers:

NARA [144]3 years ago

4 0

Answer:

C. Neither energy nor matter are exchanged with the surroundings.

Explanation:

Isolated system is a system that is completely cut off from its surroundings.

In an isolated system, both energy and matter are said to be conserved.

It cannot release energy to its surroundings or it cannot take in energy from the surroundings. Apart from energy, even matter cannot be exchanged .

For example if there is a hot box which is insulated and some contents like hot water or milk are poured into it, the heat energy of the water/milk cannot be lost to the surroundings and also it will not take in any heat energy from the surroundings; and the actual amount of water/milk content doesn't change. Such a system is called an isolated system.

charle [14.2K]3 years ago

3 0

It is c
because Mrs.Brown told us in class that Neither energy nor matter are exchanged with the surroundings.

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Answer:

Explanation:

The correct answer should be the micrometer.

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The correct option is C.

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3 years ago

A hiker throws a ball at an angle of 21.0° above the horizontal from a hill 21.0 m high. The hiker’s height is 1.750 m. The magn

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Answer:

38.8 m

Explanation:

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Use second equation of motion

h = Uyt + 0.5 at^2

- 22.75 = 5.376 t - 0.5 x 9.8 t^2

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$t=\frac{5.376\pm \sqrt{5.376^{2}+4\times 4.9\times 22.75}}{9.8}$

By solving

t = 2.77 second

So, horizontal distance

d = Ux t

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