NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1390 - 1397 of 2000

Question

If a motor pumps out water from a well , then the quantity of water pumped out per second is:

Question

A car of mass travelling hits a concrete wall and comes to a stop in . The magnitude of average force acting on the car to stop by wall:

Question

The length of the pendulum for which the time period is 1.2 second is:

Question

What is the mass of one atom of silver?

Question

If that is on the earth is , then the weight of a body on moon is about:

Question

An astronaut on a planet measures the acceleration due to gravity to be . He knows that the radius of this planet is about times that of the earth. The ratio of the mass of earth to mass of this planet is:

(The acceleration due to gravity on the earth’s surface is )

Question

A stationary particle explodes into two particles of masses and which move in opposite directions with velocities and . The ratio of their kinetic energy is:

Question

An object freely fall from height reaches the ground in time . What is the height at time ?