Questions from College Physics

Q: A refracting telescope is 36.4 cm long and has a

A refracting telescope is 36.4 cm long and has a 6.0 cm diameter aperture. The magnifying power is 90.0. (a) What are the focal lengths of the lenses? (b) What is the diffraction limit on the minimu...

Q: In your own words, phrase each of Newton's three laws of

In your own words, phrase each of Newton's three laws of motion as a statement about momentum.

Q: In Fig. 8.2b, where should the doorknob be

In Fig. 8.2b, where should the doorknob be located to make the door easier to open?

Q: A 4.0 kg block is released from rest at the

A 4.0 kg block is released from rest at the top of a frictionless plane of length 8.0 m that is inclined at an angle of 15° to the horizontal. A cord is attached to the block and trails alo...

Q: Part (a) of the figure shows a simplified model of

Part (a) of the figure shows a simplified model of how the triceps muscle connects to the forearm. As the angle θ is changed, the tendon wraps around a nearly circular arc. Explain how th...

Q: Five ideal mass-spring systems are described by their masses,

Five ideal mass-spring systems are described by their masses, spring constants, and amplitudes of oscillation as follows. Rank them in decreasing order of the frequency of oscillations. (a) mass m, s...

Q: Part (a) of the figure shows a simplified model of

Part (a) of the figure shows a simplified model of how the biceps muscle enables the forearm to support a load. What are the advantages of this arrangement as opposed to the alternative shown in part...

Q: A solenoid is made of 300.0 turns of wire,

A solenoid is made of 300.0 turns of wire, wrapped around a hollow cylinder of radius 1.2 cm and length 6.0 cm. What is the self- inductance of the solenoid?

Q: A parallel plate capacitor is composed of two square plates, 10

A parallel plate capacitor is composed of two square plates, 10.0 cm on a side, separated by an air gap of 0.75 mm. (a) What is the charge on this capacitor when there is a potential difference of 15...

Q: In Section 8.6, it was asserted that the sum

In Section 8.6, it was asserted that the sum of all the internal torques (i.e., the torques due to internal forces) acting on a rigid object is zero. The figure shows two particles in a rigid object....