The human ear is most sensitive to sound that has a frequency of about 4000 hz. assume that the speed of sound in air is 340 m/s.
what is the wavelength of a sound heard in the air with this frequency?
a. 0.043 m
b. 0.085 m
c. 12 m
d. 340 m

Awheel rotates without friction about a stationary horizontal axis at the center of the wheel. a constant tangential force equal to 82.0 n is applied to the rim of the wheel. the wheel has radius 0.150 m . starting from rest, the wheel has an angular speed of 12.8 rev/s after 3.88 s. what is the moment of inertia of the wheel?

Orange juice has a lower or higher viscosity than chocolate syrup

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.