What store of energy does friction
always produce?
a. Heat
b. Light
c. Gravitational potential
Help me please

Heat energy is produced by friction

Explanation:

Friction between two objects resists the movement of one object over the other sliding object. Whenever two objects come into direct contact, a friction is produced.

Friction converts some of the mechanical energy or kinetic energy of the motion into heat energy.

When two hands are rubbed together, the palms become warm due to production of heat energy due to friction.

This energy conversion during friction is termed as coulomb damping.

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

b

explanation: