Which of the following is true of friction? A friction makes motion possible on Earth. B. friction has mass and can be held. C. friction is always equal to velocity

How do you the retinas of the eyes of night-hunting animals differ from the retinas of animals that hunt during the daytime

A fish maintains its depth in fresh water by adjusting the air content of porous bone or air sacs to make its average density the same as that of the water. Suppose that with its air sacs collapsed, a fish has a density of 1.05 g/cm3.

The source of the magnetic field on the Sun is

How many ml of (g measured at stp are produced at a platinum cathode in the electrolysis of s (aq by 4.35 a of electric current in 6.00 min?

Ferromagnetic materials-

Which reaction obeys the law of conservation of mass?

Smaller bits of rock that pass through the atmosphere and slam into Earth's surface are called a. asteroids. b. meteors. c. meteorites. d. meteoroids.

What is the conversion from 1.2 mm to m

Which sentence contains italicized words that are used as an infinitive phrase? A. Kelly went to the grocery store. B. Tom went there for some flour. C. Mark wanted to go, but not today. D. Jane parked her car behind a truck.

The difference in electric potential between a thunder cloud and the ground is 1.53 108 V. Electrons move from the ground which is at a lower potential to the cloud which is at a higher potential.