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gagan23

Asked: January 14, 2025In: Class-11-Physics

A shell, in flight, explodes into four unequal parts. Which of the following is conserved?

Energy is the capacity to do work or produce change. It exists in various forms including kinetic energy thermal energy potential energy and chemical energy. Energy can be transformed from one form to another but cannot be created or destroyed ...

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gagan23

Asked: January 14, 2025In: Class-11-Physics

250 N force is required to raise 75 kg mass from a pulley. If rope is pulled 12 m, then the load is lifted to 3 m, the efficiency of pulley system will be

A pulley is a simple machine consisting of a wheel with a rope or chain that passes over it. It changes the direction of force applied to lift heavy objects. Pulleys can be used individually or in systems to reduce ...

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gagan23

Asked: January 14, 2025In: Class-11-Physics

How much water a pump of 2 kW can raise in one minute to a height of 10 m? (take g = 10m /s²)

Gravity is the force of attraction between two masses. It governs the motion of celestial bodies and keeps planets in orbit around stars. On Earth, gravity gives weight to objects and causes them to fall towards the ground when dropped. ...

Vanshya

Asked: February 13, 2021In: Class-11-Physics

Give an example in which a force does work on a body but fails to change its K.E.

NCERT Solutions for Class 11 Science Work energy and power 4 Important Board Questions Work energy and power NCERT Books for Session 2022-2023 CBSE Board and UP Board 2 Marks Questions

Vanshya

Asked: February 13, 2021In: Class-11-Physics

How high must a body be lifted to gain an amount of P.E. equal to the K.E. it has when moving at speed 20 ms⁻¹. (The value of acceleration due to gravity at a place is 9.8 ms⁻²).

NCERT Solutions for Class 11 Science Work energy and power 4 Important Board Questions Work energy and power NCERT Books for Session 2022-2023 CBSE Board and UP Board 2 Marks Questions

A shell, in flight, explodes into four unequal parts. Which of the following is conserved?

250 N force is required to raise 75 kg mass from a pulley. If rope is pulled 12 m, then the load is lifted to 3 m, the efficiency of pulley system will be

How much water a pump of 2 kW can raise in one minute to a height of 10 m? (take g = 10m /s²)

Give an example in which a force does work on a body but fails to change its K.E.

How high must a body be lifted to gain an amount of P.E. equal to the K.E. it has when moving at speed 20 ms⁻¹. (The value of acceleration due to gravity at a place is 9.8 ms⁻²).

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