Well, we usually assume that the resistance of a circuit component
is constant and doesn't change. But the truth is that for anything
that conducts current, its resistance always increases somewhat
when it warms up.
For things like light bulbs, electric toasters, space heaters, electric
stove burners, the heat coils in a blow-dryer ... anything that's
designed to be really hot when it's doing its job ... the resistance
of those things increases significantly when they come up to their
operating temperatures.
Microwaves and light waves ... as well as radio, X-rays,
ultraviolet rays, gamma rays, etc. ... are waves of
electromagnetic radiation. The difference is in their
frequency/wavelength.
Answer:
a drummer practicing his drum set
Explanation:
Answer:
Neither "matter" nor "energy" can be created or destroyed, but they can be changed from one form to the other.
Explanation:
