The height of the point vertically above the earth's surface, at which acceleration due to gravity becomes 1% of it's value at the surface (Radius of the earth = R) . What would be the surface?

Which is the illustrate the law of reciprocal proportions?

A car is moving with a uniform velocity on a rough horizontal road. What would be the answer according to Newton’s first law of motion?

The A.C. current gain of a transistor is 100. If the base current changes by 100uA, What will be the charge in collector current?

A 25 kW dc generator produces a potential difference of 250 V. If the resistance of the transmission line is 1, what percentage of the original power is lost during transmission?

A charge Q is placed on the x axis at x = +4.0 m. A second charge q is located at the origin. If Q = +75 nC and q = -8.0 nC, what will be the magnitude of the electric field on the y axis at y = +3.0 m?

A heart pacemaker fires 67 times a minute, each time a 25.0 nF capacitor is charged (by a battery in series with a resistor) to 0.632 of its full voltage. What will be the value of the resistance (in Mohm)?

What would the approximate number of molecules in one litre of water?

Define sound ranging. Give one use of sound ranging.

How is sound perceived by us?