Physicsmedium · Past Paper
The power of an engine which can lift 200 kg of water through 50 m in 10 seconds is (g=10 m/s^2):
A1000 W
B5000 W
C10000 W
D2000 W
✓ Correct Answer: C — 10000 W
Work = mgh = 200 * 10 * 50 = 100,000 J. Power = Work/time = 100,000 / 10 = 10,000 W.
Share this question
More from Physics
- A body covers 12m in the 2nd second and 20m in the 4th second. How much distance will it cover in 4 seconds?
- A point moves with uniform acceleration and v1, v2, v3 denote average velocities in three successive intervals of time t1, t2, t3. Which of the following is correct?
- Total Internal Reflection occurs when light travels from:
- A spring is compressed by 0.1 m. If the spring constant is 100 N/m, the energy stored is:
- Momentum of a body of mass 5 kg moving with 10 m/s is: