The velocity of a sound on a particular day outside is 331 meters/second. what is the frequency of a tone if it has a wavelength of 0.6 meters?

Why is there friction between objects

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?