In addition to water, what things are necessary for an aquifer to form?

A. Acid and porous rocks

B. Porous rocks and a cave

C. Water table and an impermeable rock layer

D. Porous rocks and an impermeable rock layer

A set of data is collected for objects in an inelastic collision, as recorded in the table. To identify the momentum of Object 1, you must multiply (A. elapsed time B. mass C. acceleration and (A. elapsed time B. applied force C.

Name two kinds of practical electric pumps.

Pouring water on yourself and drying naturally (vs. toweling off) cools you because O A. the thermal energy of the water is decreasing. O B. the water is colder than you are. O C. the water is using heat to undergo a phase change. O D.

In 10 seconds a car accelerates 4/ms to 60m/s. how fast was the car going before it accelerated?

Other sentences within a paragraph should change the focus of the topic sentence. a. True b. False

3. How is electric potential different than electric potential energy?

Ethan pushes a wooden box across a carpet floor then he pushes the same box across a smooth marble floor why does Ethan find it easier to push the box on the marble floor than carpet floor

Let's now apply our equations for the normal modes of open and closed pipes. On a day when the speed of sound is 345 m/s, the fundamental frequency of an open organ pipe is 690 Hz.

Suppose you are an observer standing on the Moon, looking back at Earth. If the moon is in the waxingquarter phase, what phase of the Earth would you see? A. waxing quarter B. full C. new D. waning quarter E. none; the Earth doesn't have phases

How many chromosomes will an elephant's sperm have?