an electron moves with a speed of 2.0 x 106ms-1 in a straight line. Calculate the wave length of the electron wave. [mass of an electron = 9.1 x 10-31 kg][P...

Which of the following statements about moving particle is correct?

The average speed of an object is determined by dividing the sum of its initial and final speeds by two only when the acceleration is

What is the density of a fuel of relative density 0.72? [Density of water = 1000kg m-3]

The types of motion which a cylindrical drum rolling down an inclined plane undergoes are

Which of the following properties of a long steel bar would alter if the bar were melted, recast into a cube and allowed to cool to its original temperature?

Which of the following statements about static friction is correct? It

Which of the following instruments is best for measuring the diameter of a thin constantan wire?

Two cars X and Y travelling in opposite directions along the same high way at uniform velocities 110 kmh-1 and 90kmh-1 respectively pass each other at a cert...