WAEC Past Questions and Answers - Page 4128

A balloon containing 546cm³ of air is heated from 0^oC to 10^oC. If the pressure is kept constant, what will be its volume at 10^oC?

A charge of 1.6 x 10^-10C is placed in a uniform electric field of intensity 2.0 x 10⁵NC^-1. What is the magnitude of the electric force exerted on the charge?

What is the escape velocity of a body on the surface of the earth of radius R if the gravitational constant is G and the mass of the earth is M? (Neglect energy losses to the surroundings)

A listener can detect the instrument from which a note is being sounded because different instruments produce the same note with a different.

The period of a wave is 0.02 second. Calculate its wavelength if its speed is 330 ms^-1