Questions from College Physics

Q: A police car’s radar gun emits microwaves with a frequency of f1

A police car’s radar gun emits microwaves with a frequency of f1 = 36.0 GHz. The beam reflects from a speeding car, which is moving away at 43.0 m/s with respect to the police car. The frequency of th...

Q: A coil of wire is connected to an ideal 6.00

A coil of wire is connected to an ideal 6.00 V battery at t = 0. At t = 10.0 ms, the current in the coil is 204 mA. One minute later, the current is 273 mA. Find the resistance and inductance of the c...

Q: A charged pion can decay either into a muon or an electron

A charged pion can decay either into a muon or an electron. The two decay modes of a π− are: / And / . Write the two decay modes for the π+. [Hint: π+ is the antiparticle of π−. Replace each partic...

Q: Rhonda keeps a 2.0 kg model airplane moving at constant

Rhonda keeps a 2.0 kg model airplane moving at constant speed in a horizontal circle at the end of a string of length 1.0 m. The tension in the string is 18 N. How much work does the string do on the...

Q: The figure shows standing wave patterns in five pipes of equal length

The figure shows standing wave patterns in five pipes of equal length. Pipes (c) and (e) are open at both ends; the others are closed at one end. Rank the standing waves in order of the frequency, lar...

Q: A 1500 kg car coasts in neutral down a 2.0

A 1500 kg car coasts in neutral down a 2.0° hill. The car attains a terminal speed of 20.0 m/s. (a) How much power must the engine deliver to drive the car on a level road at 20.0 m/s? (b) If the ma...

Q: What is the average linear speed of Earth about the Sun?

What is the average linear speed of Earth about the Sun?

Q: A variable capacitor is made of two parallel semicircular plates with air

A variable capacitor is made of two parallel semicircular plates with air between them. One plate is fixed in place and the other can be rotated. The electric field is zero everywhere except in the re...

Q: A spring of negligible mass is compressed between two blocks, A

A spring of negligible mass is compressed between two blocks, A and B, which are at rest on a frictionless horizontal surface at a distance of 1.0 m from a wall on the left and 3.0 m from a wall on th...

Q: A pion (mass 0.140 GeV/c2) at

A pion (mass 0.140 GeV/c2) at rest decays by the weak interaction into a muon of mass 0.106 GeV/c2 and a muon antineutrino: What is the total kinetic energy of the muon and the antineutrino?