Answers

Calculate the time taken to heat 2kg of water from 50°C to 100°C in an electric kettle taking…

A light wave travels from air into a medium of refractive index 1.54. If the wavelength of the…

An electric kettle rated 1500W boils away 0.3kg of a liquid at its boiling point every 300s. Calculate…

(500cm^{-3}) of a gas is collected at 0°C and at a pressure of 72cm of mercury. What is…

The pressure of air in a tire is (22.5Nm^{-2}) at 27°C. If the air in the tyre heats…

A metal rod of length 40cm at 20°C is heated to a temperature of 45°C. If the new…

500g of water is heated so that its temperature rises from 30°C to 72°C in 7 minutes. calculate…

A ball is dropped from a height of 45m above the ground. Calculate the velocity of the ball…

A body accelerates uniformly from rest at (2ms^{-2}). Calculate the velocity after traveling 9m A. 36(ms^{-1}) B. 18(ms^{-1})…

A note of frequency of 2000Hz has a velocity of (400ms^{-1}). What is the wavelength of the note?…