Which three characteristics describe the energy of a wave? (2 points) a
Frequency, the crest, and the trough

b
Wavelength, amplitude, and frequency

c
Speed, amplitude, and medium

d
Frequency, wavelength, and medium

An astronaut on the moon throws a baseball upward. the astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 3030 ft per sec. the height s of the ball in feet is given by the equation s equals negative 2.7 t squared plus 30 t plus 6.5s=−2.7t2+30t+6.5, where t is the number of seconds after the ball was thrown. complete parts a and b.