A night storage heater contains a large block of material that is heated electrically during the night. During the day the block cools down, releasing thermal energy into the room.
Which thermal capacity and which night-time temperature increase will cause the most energy to be stored by the block?
thermal capacity
of block
night-time
temperature increase
large
large
large
small
small
large
small
small
The diagram shows the apparatus needed for an experiment to determine the specific heat capacity of the material from which an object is made.
Which piece of apparatus could be omitted if the purpose of the experiment is to determine the thermal capacity of the object?
ammeter
balance
stop-clock
thermometer
A very hot mug of coffee is near a large unheated swimming pool holding of water.
Which statement is correct?
If the mug of coffee is tipped in the pool, the coffee will lose much more internal energy than the water in the pool gains.
The internal energy of a substance depends only on its temperature.
The internal energy of the water in the pool is lower than the internal energy of the mug of coffee.
When the temperature of the mug of coffee falls, its internal energy will decrease.