Energy store and transfer Weekend Homework

What name is given to the energy of a moving object ?

What do the letters g.p.e. stand for ?

What energy is stored in a stretched spring ?

Coal is burned to heat a room and to provide a supply of hot water. State the energy transfers in this process.

A student uses an electric lamp while she is doing her homework.

State the energy transfer in this event.

A hair dryer is connected to the mains electricity supply. It blows hot air at the user's wet hair. It whirrs as it does so.

A light bulb is supplied with 60 J of energy each second.

(1) How many joules of energy are transferred from the bulb each second?

A light bulb is supplied with 60 J of energy each second. 4 J of energy are transferred from the lamp each second as light. How many joules of energy are transferred each second by heating?

A tidal power station is expected to produce 32 TJ of energy (1TJ=10^12 J) when the tides provide it with 100 TJ of gravitational potential energy. What is the efficiency of the power station.

A tungsten filament lamp is 4% efficient. How much electrical energy must be supplied to the lamp each second when it produces 6J of light per second