Questions from College Physics

Q: A biologist hangs a sample of mass 0.725 kg on

A biologist hangs a sample of mass 0.725 kg on a pair of identical, vertical springs in parallel and slowly lowers the sample to equilibrium, stretching the springs by 0.200 m. Calculate the value of...

Q: Workers attach a 25.0 - kg mass to one end

Workers attach a 25.0 - kg mass to one end of a 20.0 - m long cable and secure the other end to the top of a stationary crane, suspending the mass in midair. If the cable has a mass of 12.0 kg, determ...

Q: A piano string of mass per unit length 5.00 x

A piano string of mass per unit length 5.00 x 10-3 kg/m is under a tension of 1350 N. Find the speed with which a wave travels on this string.

Q: A student taking a quiz finds on a reference sheet the two

A student taking a quiz finds on a reference sheet the two equations f = 1/t and v = √T/μ She has forgotten what T represents in each equation. (a) Use dimensional analysis to determine the units requ...

Q: Transverse waves with a speed of 50.0 m/s

Transverse waves with a speed of 50.0 m/s are to be produced on a stretched string. A 5.00 - m length of string with a total mass of 0.060 0 kg is used. (a) What is the required tension in the string?...

Q: Before beginning a long trip on a hot day, a driver

Before beginning a long trip on a hot day, a driver inflates an automobile tire to a gauge pressure of 1.80 atm at 300. K. At the end of the trip, the gauge pressure has increased to 2.20 atm. (a) Ass...

Q: An astronaut on the Moon wishes to measure the local value of

An astronaut on the Moon wishes to measure the local value of g by timing pulses traveling down a wire that has a large object suspended from it. Assume a wire of mass 4.00 g is 1.60 m long and has a...

Q: A simple pendulum consists of a ball of mass 5.00

A simple pendulum consists of a ball of mass 5.00 kg hanging from a uniform string of mass 0.060 0 kg and length L. If the period of oscillation of the pendulum is 2.00 s, determine the speed of a tra...

Q: A string is 50.0 cm long and has a mass

A string is 50.0 cm long and has a mass of 3.00 g. A wave travels at 5.00 m/s along this string. A second string has the same length, but half the mass of the first. If the two strings are under the s...

Q: Tension is maintained in a string as in Figure P13.57

Tension is maintained in a string as in Figure P13.57. The observed wave speed is v = 24.0 m/s when the suspended mass is m = 3.00 kg. (a) What is the mass per unit length of the string? (b) What is t...