Work And Energy — Science STD 9 — Question

What are the low pressure regions known as which are created when tuning fork vibrates?

When we change sound to loud sound we increase its:

A push or a pull:

A lorry and a car moving with the same KE are brought to rest by applying the same retarding force, then:

Two particles are placed at some distance from each other. If, keeping the distance between them unchanged, the mass of each of the two particles is doubled, the value of gravitational force between them will become:

Which of the following would not be considered part of a cell's cytoplasm:

A man carries a heavy box on his head on a horizontal plane from one place to another. In this case, he does:

Which one of the following is not a metalloid?

When a toothpaste tube is squeezed, its shape changes. The force responsible for this is an example of:

In which of the following conditions, the distance between the molecules of hydrogen gas would increase?

1. Increasing pressure on hydrogen contained in a closed container.
2. Some hydrogen gas leaking out of the container.
3. Increasing the volume of the container of hydrogen gas.
4. Adding more hydrogen gas to the container without increasing the volume of the container.