Which observation would be evidence that heat was transferred by radiation?

a) a person feels colder when the wind is blowing.

b) a pan on a stove heats up the food placed in it.

c) warm air in the kitchen rises to the second floor of the house.

d) a car with the windows rolled up gets very hot on a summer day.

pls me

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy