Why is a mirror an example of a poor blackbody radiator? A.
It reflects most electromagnetic radiation instead of absorbing it.
B.
It gives off a range of wavelengths of electromagnetic radiation that depends on its temperature.
C.
It absorbs and gives off a range of wavelengths of electromagnetic radiation.
D.
It gives off only one wavelength of electromagnetic radiation.

Diego is trying to lift a piano to the second floor of his house. diego uses a pulley system and gives a big lift to the piano.the piano moves upward, then stops, and then it starts to fall to the ground. which list best describes the forces on the piano in the proper order? positive force → balanced force → negative force negative force → balanced force → positive force positive force → unbalanced force → negative force negative force → unbalanced force → positive force