f.3 phy

definition of heat :
Heat is the (thermo)energy transferred as a result of temperature difference between two systems.


Internal energy is the total kinetic energy and potential energy of all the particles (molecules/atomic entities) making up the body. It can be increased by heating or working


Temperature is a measure of average kinetic energy of all particles making up a body.


Hence
Temperature↑
=average kinetic energy of all particles making up a body↑.
=internal energy of the body↑ (potential energy is constant)




2007-10-21 13:47:34 補充：
as the energy of the spoon increased, the energy of the soup decreasedwhat is store more heat? store more (thermo)energy transferred ??is is non-sense to say store heat in PHY

The answer should be 1
When the spoon is put into the soup, the temperature of the soup lowers because of transfer of some heat energy to the sppon.
Since internal energy of the soup depends on its temperature (the lower the temperature, the less the internal energy will be), a fall in temperature indicates a decrease of internal energy.