Questions from College Physics

Q: Two steel plates are fastened together using four bolts. The bolts

Two steel plates are fastened together using four bolts. The bolts each have a shear modulus of 80 GPa and a shear strength of 600 MPa. The radius of each bolt is 1.0 cm. Normally, the bolts clamp the...

Q: A uranium nucleus (mass 238 u), initially at rest,

A uranium nucleus (mass 238 u), initially at rest, undergoes radioactive decay. After an alpha particle (mass 4.0 u) is emitted, the remaining nucleus is thorium (mass 234 u). If the alpha particle is...

Q: An incident beam of photons is scattered through 100.0°;

An incident beam of photons is scattered through 100.0°; the wavelength of the scattered photons is 124.65 pm. What is the wavelength of the incident photons?

Q: 11. When a substance is at its triple point, it

11. When a substance is at its triple point, it (a) is in its solid phase. (b) is in its liquid phase. (c) is in its gas phase. (d) may be in any or all of these phases. 12. The phase diagram for wat...

Q: A mass-spring system (mass m, spring constant k

A mass-spring system (mass m, spring constant k) oscillates with amplitude A. Show, using dimensional analysis alone, that the frequency f is independent of the amplitude A and is proportional to , a...

Q: 1. A heat engine runs between reservoirs at temperatures of 300

1. A heat engine runs between reservoirs at temperatures of 300°C and 30°C. What is its maximum possible efficiency? (a) 10% (b) 47% (c) 53% (d) 90% (e) 100% 2. The PV diagram i...

Q: Rank the flywheels of Problems 11 and 12 in order of the

Rank the flywheels of Problems 11 and 12 in order of the radial acceleration of a point on the rim, largest to smallest.

Q: In each of the five situations shown, a force is applied

In each of the five situations shown, a force is applied to a point on the handle of an old pump. Rank the situations in order of the magnitude of the torque applied to the handle, smallest to largest...

Q: Compare two methods of comparing or calculating the final speeds: using

Compare two methods of comparing or calculating the final speeds: using constant-acceleration kinematics versus using energy. Which is easier? Why?

Q: At the 10.0 km long Stanford Linear Accelerator, electrons

At the 10.0 km long Stanford Linear Accelerator, electrons with rest energy of 0.511 MeV have been accelerated to a total energy of 46 GeV. How long is the accelerator as measured in the reference fra...