Which best describes the light that plants transform into chemical energy by the process of photosynthesis?

a.
green light

b.
infrared light

c.
ultraviolet light

d.
red and blue light

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?