Questions from College Physics

Q: A refracting telescope is 45.0 cm long, and the

A refracting telescope is 45.0 cm long, and the caption states that the telescope magnifies images by a factor of 30.0. Assuming these numbers are for viewing an object an infinite distance away with...

Q: A 50 turn coil with a radius of 10.0 cm

A 50 turn coil with a radius of 10.0 cm is mounted so the coil’s axis can be oriented in any horizontal direction. Initially the axis is oriented so the magnetic flux from Earth’s field is maximized....

Q: A red line (wavelength 630 nm) in the third order

A red line (wavelength 630 nm) in the third order overlaps with a blue line in the fourth order for a particular grating. What is the wavelength of the blue line?

Q: A bar magnet is initially far from a circular loop of wire

A bar magnet is initially far from a circular loop of wire. The magnet is moved at constant speed along the axis of the loop. It moves toward the loop, proceeds to pass through it, and then continues...

Q: Red light of 650 nm appears in orders 1, 2 and

Red light of 650 nm appears in orders 1, 2 and 3 using a particular grating. What are the minimum and maximum possible number of slits per centimeter in this grating?

Q: The magnetic field between the poles of an electromagnet is 2.

The magnetic field between the poles of an electromagnet is 2.6 T. A coil of wire is placed in this region so that the field is parallel to the axis of the coil. The coil has electrical resistance 25...

Q: A grating has 5000.0 slits/cm. How many

A grating has 5000.0 slits/cm. How many orders of violet light of wavelength 412 nm can be observed with this grating?

Q: An ideal inductor of inductance L is connected to an ac power

An ideal inductor of inductance L is connected to an ac power supply, which provides an emf ℰ(t) = ℰm sin ωt. (a) Write an expression for the current in the inductor as a function of time. (b) What...

Q: A grating is made of exactly 8000 slits; the slit spacing

A grating is made of exactly 8000 slits; the slit spacing is 1.50 µm. Light of wavelength 0.600 µm is incident normally on the grating. (a) How many maxima are seen in the pattern on the screen? (b)...

Q: An ideal solenoid (N1 turns, length ℓ1, radius r1

An ideal solenoid (N1 turns, length ℓ1, radius r1) is placed inside another ideal solenoid (N2 turns, length ℓ2 > ℓ1, radius r2 > r1) such that the axes of the two coincide. If the current in the oute...