The diagram shows a wave. the quantity shown is the amplitude. this quantity is directly proportional to which of these other quantities? a) energy b) frequency c) period d) wavelength

As we know that frequency and wavelength are dependent on each other

and this is given by

here we know that

= wavelength

f = frequency

c = speed of wave

while for energy and intensity of wave we know that

Energy =

here A = amplitude of wave

so energy directly depends on amplitude of wave

so correct answer will be

A)Energy

not sure 12

explanation:

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s