Question

Q8) Write very short answers:-. (5)

1. Name two forces which can act from a distance.

2. What is the full form of PVC ?

3. What are microbes ?

4. What is the direction of frictional force ?

5. A pendulum oscillates 25 times in 5 seconds .Find its frequency .​

Answer 1

Answer:

3. micro organisms

Explanation:

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Answer 2

Explanation:

1. Gravitational Force and Electrostatic force

2. Full form is Polyvinyl chloride

3. Microbes are very small living organisms which cannot be seen through naked eyes. They are all around us.

4. Opposite to the tendency of motion that is if the body want to move towards right then frictional force will be opposite to it that is towards left side.

5. Pendulam oscillates 25 times in 5s

then in 1 sec pendulum will oscillates 25/5 times that is 5 times so it's frequency will be 5Hz.

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