Physics Past Questions and Answers

An electric bell operated within an evacuated bell jar enables us to infer correctly that

A boy ran a distance of 200m in 24s. His average speed was 8.3ms^-1. Which of the following is correct about the units in which the statements above are expressed?

A particle of charge q and mass m moving with a velocity v enters a uniform magnetic field B in the direction of the field. The force on the particle is ____________

The helium isotope \(^3_2He\)

When a metal is heated to a high temperature, electrons are emitted from its surface. The process is known as ____________