Acertain string has a mass of 120 g and a length of 40 cm. consider the quantity 3 = 120/40.

1. give the name of the quantity if there is one.

2. what is the interpretation of the quantity in this context?

3. use the interpretation to find the mass of 7 cm of the same kind of string.

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

We will use a video to study faraday’s law of electromagnetic induction by analyzing the induction that occurs due a coil of copper wire sliding along an air track that passes through an external magnetic field. specifically, we will: examine some of the main principles behind faraday’s law. apply lenz’s law to determine the direction of the induced emf. take measurements of the induced emf from the voltmeter as the coil passes into and out of the external magnetic field. use the horizontal scale provided to determine the speed of the coil. calculate the magnetic field induced in the coil as it passes into and out of the external magnetic field.