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

The layer of flux that floats to the top of molten metal during the smelting process is known as

according to Bob, on earth, it is 20 ly to planet y. anna has just passed earth, moving at constant speed v in a spaceship. when anna passes planet y, she is 20 years older than when she passed earth. calculate v

If element X has 99 protons, how many elctrons does it have?

A car traveled 1025 kilometers from El Paso to Dallas in 13.5 hours. What was it's average velocity?

The current theory of the structure of the Earth, called plate tectonics, tells us that the continents are in constant motion.

Does ice melt faster in water or air

Why are stars changing colurs by blinking?

How many birds have tested positive for West Nile virus?

How much force is needed to stretch a spring 1.2 m if the spring constant is 8.5 n/m? 7.1 n 7.3 n 9.7 n 10.2 n

What forces are equal and opposite sides