Questions from College Physics

Q: The motion of a simple pendulum is approximately SHM only if the

The motion of a simple pendulum is approximately SHM only if the amplitude is small. Consider a simple pendulum that is released from a horizontal position (θi = 90° in Fig. 10.23). (a) Using conserv...

Q: In a reciprocating saw, a Scotch yoke converts the rotation of

In a reciprocating saw, a Scotch yoke converts the rotation of the motor into the back-and-forth motion of the blade. The Scotch yoke is a mechanical device used to convert oscillatory motion to circu...

Q: 11. A woman stands on a bathroom scale in an elevator

11. A woman stands on a bathroom scale in an elevator that is not moving. The scale reads 500 N. The elevator then moves downward at a constant velocity of 4.5 m/s. What does the scale read while the...

Q: What are some of the advantages of using mirrors rather than lenses

What are some of the advantages of using mirrors rather than lenses for astronomical telescopes?

Q: A charged particle is accelerated from rest through a potential difference ΔV

A charged particle is accelerated from rest through a potential difference ΔV. The particle then passes straight through a velocity selector (field magnitudes E and B). Derive an expression for the ch...

Q: Points A and B are at the same potential. What is

Points A and B are at the same potential. What is the total work that must be done by an external agent to move a charge from A to B? Does your answer mean that no external force need be applied? Expl...

Q: A parallel plate capacitor has a capacitance of 2.0 µF

A parallel plate capacitor has a capacitance of 2.0 µF and plate separation of 1.0 mm. (a) How much potential difference can be placed across the capacitor before dielectric breakdown of air occurs (...

Q: A circular conducting loop with radius 1.8 cm is placed

A circular conducting loop with radius 1.8 cm is placed in a uniform magnetic field of 0.88 T with the plane of the coil perpendicular to the magnetic field as shown. The magnetic field decreases to 0...

Q: In the United States, the ac household current oscillates at a

In the United States, the ac household current oscillates at a frequency of 60 Hz. In the time it takes for the current to make one oscillation, how far has the electromagnetic wave traveled from the...

Q: At the Stanford Linear Accelerator, electrons and positrons collide together at

At the Stanford Linear Accelerator, electrons and positrons collide together at very high energies to create other elementary particles. Suppose an electron and a positron, each with rest energies of...