Physics Past Questions and Answers

Calculate the specific latent heat of vaporization of steam of 1.13 x 106J of heat energy is required to convert 15kg of steam to water.

A cell of internal resistance 2 π supplies current to a 6 π resistor. The efficiency of the cell is

Which of the following statements is NOT correct?

A block and tackle pulley arrangement has 6 pulleys in which an effort of 50N supports a load of 200N, calculate the efficiency of the machine

Three 3ω resistance are connected in parallel what is the equivalent resistance?