The index of refraction of a certain glass is measured to be 1.5. what is the speed of light in that glass? (c = 3.0 * 108 m/s)

Galileo discovered that the orbits in which planets move around the Sun are elliptical. True or False

A system expands by 0.91m3 at a constant pressure of 105 kPa. (a) Find the heat that flows into or out of thesystem if its internal energy increases by 91 J.

6. If a person pushes a cart with a force of 40 N and it accelerates at 0.5 m/s2, what is the mass of the cart? a. 80N b. 80 kg C. 20 N d. 20 kg

The blank of a wave is the density of the medium's particles at the compression of the wave.

Two sound waves, A and B, are traveling at the same speed. Wave A has a wavelength of 50 cm and a frequency of 7000 Hz. Wave B has a frequency of 3500 Hz-half the frequency of Wave A. What is Wave B's wavelength? A. 14,000 cm B. 25 cm C. 3500 cm D.

Bob is coming toward you at a speed of 75 km/hr. You throw a baseball in his direction at 75 km/hr. What does he see the ball doing?

Give 3 examples of something with potential energy.

A graph that shows that the pressure of a gas varies inversely with its volume under constant temperature demonstrates A. The pressure law B. The density law C. Charle's law D. Boyle's law

5. Why should the electrons be placed separate from each other (why not together) ?

A battery high rate discharge (load capacity) test is being performed on a 12 volt battery. Technician A says that a good battery should have a voltage reading of higher than 9.6 volts while under load at the end of the 15-second test.