Questions from College Physics

Q: The eyepiece of a microscope has a focal length of 1.

The eyepiece of a microscope has a focal length of 1.25 cm, and the objective lens focal length is 1.44 cm. (a) If the tube length is 18.0 cm, what is the angular magnification of the microscope? (b...

Q: A toroid has a square cross section of side a. The

A toroid has a square cross section of side a. The toroid has N turns and radius R. The toroid is narrow (a ≪ R) so that the magnetic field inside the t oroid can be considered to be...

Q: Jordan is building a compound microscope using an eyepiece with a focal

Jordan is building a compound microscope using an eyepiece with a focal length of 7.50 cm and an objective with a focal length of 1.500 cm. He will place the specimen a distance of 1.600 cm from the o...

Q: Suppose you wanted to use Earth’s magnetic field to make an ac

Suppose you wanted to use Earth’s magnetic field to make an ac generator at a location where the magnitude of the field is 0.050 mT. Your coil has 1000.0 turns and a radius of 5.0 cm. At what angular...

Q: The wing of an insect is 1.0 mm long.

The wing of an insect is 1.0 mm long. When viewed through a microscope, the image is 1.0 m long and is located 5.0 m away. Determine the angular magnification.

Q: A uniform magnetic field of magnitude 0.29 T makes an

A uniform magnetic field of magnitude 0.29 T makes an angle of 13° with the plane of a circular loop of wire. The loop has radius 1.85 cm. What is the magnetic flux through the loop?

Q: To study the physical features of Hydra viridis, a student uses

To study the physical features of Hydra viridis, a student uses a compound microscope with a magnifying power of 425. (a) If the eyepiece has focal length 1.9 cm and the tube length is 19.2 cm, what...

Q: A solenoid is 8.5 cm long, 1.6

A solenoid is 8.5 cm long, 1.6 cm in diameter, and has 350 turns. When the current through the solenoid is 65 mA, what is the magnetic flux through one turn of the solenoid?

Q: Carlos and Shannon are sledding down a snow-covered slope that

Carlos and Shannon are sledding down a snow-covered slope that is angled at 12° below the horizontal. When sliding on snow, Carlos's sled has a coefficient of friction μk = 0.10; Shannon has a “supers...

Q: The figure shows a schematic diagram of a microscope. (Note

The figure shows a schematic diagram of a microscope. (Note that the image formed by the eyepiece is not at infinity.) For the object and image locations shown, which of the points (A, B, C, or D) rep...