Aball is droped from a height of 16m how much time will pass before the ball hits the ground

The time is 1.8s

Explanation:

The ball droped, will freely fall under gravity.

Hence we use free fall formula to calculate the time by the ball to hit the ground

Where h is the height from which the ball is droped, g is the acceleration due to gravity that acted on the ball, and t is the time taken by the ball to hit the ground.

From the question,

h=16m

Also, let take

By substitution we obtain,

Diving through by 9.8

square root both sides, we obtain

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

i believe the answer would be:

d. violin, clarinet, french horn, and tuba