Questions from College Physics

Q: (a) If you measure the ship that passes you in

(a) If you measure the ship that passes you in Problem 76 to be 24 m long, how long will the observers on Earth measure that ship to be? (b) If there is a rod on your spaceship that you measure to be...

Q: Roger is in a ship offshore and listening to a baseball game

Roger is in a ship offshore and listening to a baseball game on his radio. He notices that there is destructive interference when seaplanes from the nearby Coast Guard station are flying directly over...

Q: In aviation, a standard rate turn proceeds at an angular speed

In aviation, a standard rate turn proceeds at an angular speed of 180° per minute. What is the radius of a standard rate turn for a plane moving at 240 m/s?

Q: If a capacitor has a capacitance of 10.2 µF and

If a capacitor has a capacitance of 10.2 µF and we wish to lower the potential difference across the plates by 60.0 V, what magnitude of charge will we have to remove from each plate?

Q: A 1500 kg car moving east at 17 m/s collides

A 1500 kg car moving east at 17 m/s collides with a 1800 kg car moving south at 15 m/s, and the two cars stick together. (a) What is the velocity of the cars right after the collision? (b) How much...

Q: Four long straight wires, each with current I, overlap to

Four long straight wires, each with current I, overlap to form a square with side 2r. (a) Find the magnetic field at the center of the square. (b) Compare your answer with the magnetic field at the c...

Q: Two sheets of ideal polarizing material are placed with their transmission axes

Two sheets of ideal polarizing material are placed with their transmission axes at right angles to each other. A third polarizing sheet is placed between them with its transmission axis at 45° to the...

Q: Suppose some astronauts have landed on Mars. When the astronauts ask

Suppose some astronauts have landed on Mars. When the astronauts ask a question of mission control personnel on Earth, what is the shortest possible time they have to wait for a response? The average...

Q: An object is subjected to two constant forces that are perpendicular to

An object is subjected to two constant forces that are perpendicular to each other. Can a set of x- and y-axes be chosen so that the acceleration of the object has only one nonzero component? If so, h...

Q: The f-stop of a camera lens is defined as the

The f-stop of a camera lens is defined as the ratio of the focal length of lens to the diameter of the aperture. A large f-stop therefore means a small aperture. If diffraction is the only considerati...