What kind of system does not allow matter or energy to enter or exit?

A. Connected

B. Isolated

C. Open

D. Closed

The life cycle of stars may be boiled down into a tug of war, lasting billions of years, between two basic forces. In your own words, describe these forces, and identify which of the two eventually "wins" the battle.

Scientists use sonar machines in order to map the contour of the ocean floor. The data from the sonar machines make a model of the ocean floor. What information can be obtained from this model? A. what sort of organisms live near the ocean floor B.

Power is equal to voltage multiplied by current. Add the missing information in each of the following power equations. P = V P = R P = V2

A gas is collected from a radioactive material; upon inspection, the gas is identified as helium. the presence of the helium indicates the radioactive sample is most likely decaying by

If a bouncing ball has a total energy of 20 j and a kinetic energy of 5 j, the ball's potential energy is ...

What are the three properties of gravity

How do matter and energy interact?

What is something that has a lot of thermal energy?

Why do we use a shunt on the galvanometer

Two of the element sodium combine with one of the element chlorine to form the sodium chloride.