Bolu

Work and Energy Class 9

A battery lights a bulb. Describe the energy changes involved in the process.

Bolu March 19, 2026 No Comments

Work and Energy Class 9

An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?

Bolu March 19, 2026 No Comments

Class 9 Physics

A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top? Given, g = 10 m s–2 and speed of sound = 340 m s–1

Bolu March 5, 2026 No Comments

What is reverberation? How can it be reduced?

Bolu February 8, 2026 No Comments

Reverberation is the repeated reflection of sound in a closed room after the source of…

Class 9 Latest Jobs Physics

What is sound and how is it produced?

Bolu February 8, 2026 No Comments

Sound is the form of wave energy that travels through a medium such as solids,…

What outcomes do you expect if all the mitochondria are removed from a eukaryotic cells

Do white flowers contain any pigment? Give reasons

What are the 5 functions of cell membrane

Why are lysosomes known as suicidal bag