Question

At 25°C, sound can travel 100 meters across a football field in 0.29 seconds. Determine the velocity of these sound waves in the direction they travel across the field.

Answer 1

Divide the distance by the time. That is how you get velocity.

Answer 2

Given: t (time): 0.29s (2 sig figs)*
d (distance): 100m

v = d / t
v = 100m / 0.29s
v = 340 m/s (remember two sig figs)*

Answer 3

In an electric motor, at the moment that the half-turn of the rotor (central electromagnet) completes, the field of this electromagnet

Answer 4

29
m
s

Answer 5

345
m
s

Answer 6

29 m/s