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Snowcat [4.5K]
3 years ago
14

Which of the following items can enter and exit an isolated system?

Physics
1 answer:
Mkey [24]3 years ago
7 0

Neither energy nor matter can enter and exit an isolated system.

Explanation:

There are three types of systems which refers to universe. They are

1. Open System : In an open system, both energy and matter have external interactions. Example:- boiling water in an open pan.

2. Closed system : In a closed system, only energy has interaction with surroundings.  Example:- boiling water with a lid on the pan.

3. Isolated system : In an isolated system, neither energy-nor matter has external interactions with surroundings. Example : a thermos flask does not exchange energy and matter.

Hence, the correct option is (a) " neither energy nor matter ".

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4. How will you find the volume of an irregularly shaped object that would dissolve<br>in water?​
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The ratio of the focal length of a lens to it's diameter is the​
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The f-ratio describes the relationship between the lens diameter and the focal length and is calculated by dividing the focal length by the diameter of the lens. For example, if a lens were to have a focal length of 50mm and a diameter of 10mm, then the f-ratio would be 50mm/10mm=5 or otherwise referred to as f5.

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A force of 20 N acts upon a 5 kg block. What is the acceleration of the object.
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4m/s/s

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110.9 m/s²

Explanation:

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Therefore, the angular velocity of the tack is, \omega=17.153\ rad/s

Now, radial acceleration of the tack is given as:

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Plug in the given values and solve for a_r. This gives,

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