What provides the centripetal force needed to keep Earth in orbit?

A. inertia

B. its rotation on its axis

C. the gravitational pull of the Sun

D. the gravitational pull of the Moon

What is 47.02 as a mixed number?

What is the difference between speed and velocity? A. Speed and velocity both measure an object's change in position per unit time, but velocity also depends upon the object's direction of motion. B.

What influences the water movement

When electrical energy is converted into thermal energy, which of the following must be true? Only the amount of electrical energy changes. Only the amount of thermal energy changes. The total amount of thermal energy plus electrical energy changes.

In compressed state, a spring 3.00 meters long hanging from the ceiling has a potential energy of 2.0 joules. If the entire potential energy is used to release a ball of mass 1.

Two vectors which do not lie along the same line represent what kind of motion? A. Resultant motion B. Scalar motion C. One-dimensional motion D. Two-dimensional motion

What units do we use to measure volume

What are the three layers of the sun's atmosphere, in order of increasing distance from the surface?

What is the nature of the distance time graph for motion of an object.

Write in powers of 10 notation: 3 trillion; five-thousandths; 730,000,000,000,000; 0.000000000082.