1. 300 J of energy is added to an object. Its temperature increases by 0.5 °C. What…
PHYSICS · Multi-part · GCSE · Physics · Energy · Energy
Problem
1. 300 J of energy is added to an object. Its temperature increases by 0.5 °C. What is the heat capacity of the object?
(1) 300 J of energy is added to an object. Its temperature increases by 0.5 °C. What is the heat capacity of the object?
(2) A sample of a substance has a heat capacity of 450 J°C-1. If 3.6 kJ of energy are added to the object, calculate the change in temperature of the object.
(3) Object A has a heat capacity of 375 J°C-1. Object B has a heat capacity of 500 J°C-1. If both objects are given the same amount of energy, which object's temperature will increase the most?
(4) The SHC of iron is 420 Jkg-1°C-1. Calculate the amount of energy required to heat 5000 kg of iron from a temperature of 15 °C to its melting temperature of 1540 °C. Give your answer in standard form.
(5) A squash ball (made of rubber) of mass 50 g is heated from an initial temperature of 15 °C to a higher, working temperature. If the amount of energy given to the ball is 2.5 kJ, calculate the final temperature of the squash ball. (The SHC of rubber is 1600 Jkg-1°C-1.)