What are the units of energy?
The battery in a torch has 20J of chemical energy store when it is full. 5J is transferred from the battery. How much is left?
There are 5000J in the chemical energy store of a crisp. In a bag of crisps there are 30 crisps.
How big is the chemical of energy store of an entire bag of crisps?
There are 5000J in the chemical energy store of a crisp. In a bag of crisps there are 30 crisps.
How big is the chemical of energy store of 3 bags of crisps?
What happens to the chemical energy store within a fuel as it is used?
A match has 500 J in its chemical energy store. It is lit and burns out.
How much energy is gained by the thermal energy store of the air around the match?
Which thermal energy store has changed the most in the following?
If a battery has 80J of energy and 30J are used, how much energy remains?
A car has 300J of kinetic energy. If 100J are lost to friction, how much kinetic energy does it have left?
A microwave has 400J of energy. If 150J are lost as heat, how much energy is left?