Author: Anonymous

Find the size of the smallest detail observable in human tissue with 20.0-MHz ultrasound. (The average propagation speed for sound in body tissue is 1540 m/s) 

A “showy” custom-built car has two brass horns that are supposed to produce the same frequency but actually emit 263.8 and 264.5 Hz. What beat frequency is produced?

The time delay between transmission and the arrival of the reflected wave of a signal using ultrasound traveling through a piece of fat tissue was 0.13 ms. At what depth did this reflection occur? (The average propagation speed for sound in body tissue is 1540 m/s) 

What frequency is received by a mouse just before being dispatched by a hawk flying at it at 25.0 m/s and emitting a screech of frequency 3500 Hz? Take the speed of sound to be 331 m/s.

A sphere has a surface uniformly charged with 1.00 C. At what distance from its center is the potential 5.00 MV?

A sound wave traveling in  20 0C air has a pressure amplitude of 0.5 Pa. What is the intensity of the wave?

Find the size of the smallest detail observable in human tissue with 20.0-MHz ultrasound. (The average propagation speed for sound in body tissue is 1540 m/s) 

The factor of  10^-12 in the range of intensities to which the ear can respond, from threshold to that causing damage after brief exposure, is truly remarkable. If you could measure distances over the same range with a single instrument and the smallest distance you could measure was 1 mm, what would the largest be?

A  165 microF capacitor is used in conjunction with a motor. How much energy is stored in it when 119 V is applied?

The naturally occurring charge on the ground on a fine day out in the open country is -1.00 nC/m2 . Calculate the electric potential at  a height of 3.00 m above the ground.