Green plants need light in order to survive. Structures in the leaves absorb light, which in turn, helps plants make their own food.
Under which color of light will plants be least likely to make food?
red
blue
O orange
green

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples