A car of mass 800kg attains a speed of 25m/s in 20secs. T...
A car of mass 800kg attains a speed of 25m/s in 20secs. The power developed in the engine is?
1.25 x 104W
2.50x 104W
1.25 x 106W
2.50 x 106W
Correct answer is B
P = mv2t=800×25×2520
2.5 x 104W
Three resistors, with substances 250Ω, 500Ω and 1kΩ are connected in seri...
A cell of e.m.f 2V and internal resistance 1Ω supplies a current of 0.5 amps to a resistanc...
The following are some units i. Ns ii. Mm iii. Nm-2 iv. JKg-1 What is the unit of latent he...
At low humidity in an environment, the human skin is usually? ...
What is the total resistance in the above diagram? ...
Ripples on water and light waves are similar because both? ...