What is the frequency of a wave if 3 crests pass in 6 seconds?

a. 0.5 hz

b. 2 hz

c. 9 hz

d. 18 hz

The intensity of the sound wave reaching your ear from a car radio 140 m away from you is 0.050 W/m2. The car drives toward you, so that the distance between you and the radio has decreased to one-fourth of its original value.

A firefighter mounts the nozzle of his fire hose a distance 36.9 m away from the edge of a burning building so that it sprays from ground level at a 45° angle above the horizontal. After quenching a hotspot at a height of 8.

What is time? With or without explanation

How did France and Spain use what they learned during the American revolution to benefit their own countries

What is the 'runaway greenhouse effect' produced by Venus's atmosphere?

Restate newton's first law in terms of acceleratin

What step precedes the onset of hydrogen fusion in a star?

Manuel is holding a 5kg box how much force is he exerting on it

The object on the left is a discus, a piece of sports equipment made of a metal core, a plastic inner rim, and a metal outer rim. The object on the right is a flying disc, a piece of sports equipment made of plastic.

If you are sitting in your seat how are the forces acting on you?