Laws of Motion — Physics STD 11 — Question

Torque is a-

Mercury thermometers can be used to measure temperature up to ……..

If the work done by the force on the body is positive then its kinetic energy

The centripetal force is –

A carnot engine absorbs heat at 127°C and rejects heat at 87°C. The efficiency of engine is

In pure rolling velocity of center of mass is equal to –

The first derivative of position vector with respect to time is –

Heat produced by a current is obtained a relation H = I2RT. If the errors in measuring these quantities current, resistance, time are 1%, 2%, 1% respectively then total error in calculating the energy produced is

The reduced mass of the system of two particles of masses 2 m and 4 m will be –