An ambulance with a siren emitting a whine at 1800 Hz overtakes and passes a cyclist pedaling a bike at 2.44 m/s. After being passed, the cyclist hears a frequency of 1780 Hz. How fast is the ambulance moving? (Use 343 m/s for the speed of sound in air.)

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.

Decreased sensitivity to an unchanging stimulus is known as

Newtons view of arrangement of the universe