Questions from College Physics

Q: If an object is traveling at a constant velocity, is it

If an object is traveling at a constant velocity, is it necessarily traveling in a straight line? Explain.

Q: Suppose that an ideal capacitor and an ideal inductor are connected in

Suppose that an ideal capacitor and an ideal inductor are connected in series in an ac circuit. (a) What is the phase difference between vC(t) and vL(t)? [Hint: Since they are in series, the same cur...

Q: The voltage across an inductor and the current through the inductor are

The voltage across an inductor and the current through the inductor are related by vL = L Δi/Δt. Suppose that i(t) = I sin ωt. (a) Sketch a graph of i(t), showing at least one full cycle. (b) Using...

Q: A curve in a stretch of highway has radius 610 m.

A curve in a stretch of highway has radius 610 m. The road is banked at angle 5.8° to the horizontal. The coefficient of static friction between the tires and road is 0.50. What is the fastest speed t...

Q: A photoelectric experiment illuminates the same metal with six different ultraviolet sources

A photoelectric experiment illuminates the same metal with six different ultraviolet sources. Both the wavelength and the intensity vary from one source to another. Rank the six situations in order of...

Q: Calculate the kinetic energy of the alpha particle in Problem 25.

Calculate the kinetic energy of the alpha particle in Problem 25. This time, do not assume that the / nucleus is at rest after the reaction. Start by figuring out the ratio of the kinetic energies...

Q: The ball is released from rest when the thread makes an angle

The ball is released from rest when the thread makes an angle of 32° with the vertical. How fast is it moving when the thread is vertical?

Q: During a thunderstorm, some cows gather under a large tree.

During a thunderstorm, some cows gather under a large tree. One cow stands facing directly toward the tree. Another cow stands at about the same distance from the tree, but it faces sideways (tangent...

Q: An electron is placed in a uniform electric field of strength 232

An electron is placed in a uniform electric field of strength 232 N/C. If the electron is at rest at the origin of a coordinate system at t = 0 and the electric field is in the positive x-direction, w...

Q: Why must a blood pressure cuff be wrapped around the arm at

Why must a blood pressure cuff be wrapped around the arm at the same vertical level as the heart?