Abattery consists of five dry cells connected in series. if the voltage developed by each cell is 1.5 v, the total voltage developed by the battery is
a. 5.0 v.
b. 1.5 v.
c. 7.5 v.
d. 0.3 v.

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.

What sort of waves exhibit the doppler effect?