How many joules of heat energy are required to raise the temperature of 10kg of water from 22⁰C to 27⁰C? (The Specific Heat Capacity of water is 4200 Jkg^-1⁰C^-1)
Heat energy Q = mass of substance m X SHC of substance C X change in temperature ΔT Q = 10kg X 4200Jkg^-1⁰C^-1 X (27-22)⁰C Q = 10kg X 4200Jkg^-1⁰C^-1 X 5⁰C Q=210,000J = 210kJ 210 kilojoules of energy is required
JS
Related Physics A Level answers
All answers ▸Explain why the pressure exerted by a gas increases as they are heated at constant volume, with references to the kinetic theory of gases.
An electron is moving with speed 2x10^5ms-1 through a magnetic field of strength 0.5T. If the electrons velocity is perpendicular to the direction of the magnetic field, what is the magnitude of the force felt by the electron?
A boy (25kg) and a girl (20kg) are playing on a see-saw which is 4m long. If the boy sits 1m from the centre on the left side and the girl 2m from the centre on the other, which direction will the see-saw will rotate around its centre?
How does circular motion work?