Questions from College Physics

Q: Some claim that mountain climbers suffer from headaches due not only to

Some claim that mountain climbers suffer from headaches due not only to a lack of oxygen in the brain, but also to the expansion of the brain in the cranium. Find the fractional change of the brain’s...

Q: Four objects move to the right with constant acceleration. Rank the

Four objects move to the right with constant acceleration. Rank the motion diagrams in order of the magnitude of the acceleration, from greatest to least. The time interval between dots is the same in...

Q: When batteries are connected in parallel, they should have the same

When batteries are connected in parallel, they should have the same emf. However, batteries connected in series need not have the same emf. Explain.

Q: A harpsichord string is made of yellow brass (Young's modulus 90

A harpsichord string is made of yellow brass (Young's modulus 90 GPa, tensile strength 0.63 GPa, mass density 8500 kg/m3). When tuned correctly, the tension in the string is 59.4 N, which is 93% of th...

Q: Suppose a satellite is in a circular orbit 3.0 Earth

Suppose a satellite is in a circular orbit 3.0 Earth radii above the surface of Earth (4.0 Earth radii from the center of Earth). By how much does it have to increase its speed in order to be able to...

Q: An ac circuit contains a 12.5 Ω resistor, a

An ac circuit contains a 12.5 Ω resistor, a 5.00 µF capacitor, and a 3.60 mH inductor connected in series to an ac generator with an output voltage of 50.0 V (peak) and frequency of 1.59 kHz. Find the...

Q: 1. Solid lead has more than four times the mass density

1. Solid lead has more than four times the mass density of solid aluminum. What is the main reason that lead is so much more dense? (a) The Pb atom is smaller than the Al atom. (b) The Pb nucleus is s...

Q: Give an example of an object whose acceleration is (a

Give an example of an object whose acceleration is (a) in the same direction as its velocity, (b) opposite its velocity, and (c) perpendicular to its velocity.

Q: In Problem 13, what is the kinetic energy of the muon

In Problem 13, what is the kinetic energy of the muon? [Hint: The muon is nonrelativistic, so its kinetic energy-momentum relationship is K = p2/(2m). The antineutrino is extremely relativistic.]

Q: 1. A baryon can be composed of (a)

1. A baryon can be composed of (a) any odd number of quarks. (b) three quarks with three different colors. (c) three quarks of matching color. (d) a colorless quark-antiquark pair. 2. Mesons are comp...