A pitcher throws a baseball horizontally from the mound to home plate. The ball falls 0.932 m (3.06 ft) by the time it reaches home plate 18.3 m (60 ft) away. How fast was the pitcher's pitch?

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

Which sound characteristic is not affected by the relative motion of an object

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?