Which of the following do not make their own energy through nuclear fusion? Select all that apply.

A. giant star

B. protostar

C. dwarf star

D. black hole

E. neutron star

F. main sequence star

Explain how a refrigerator work to cool down warm object that would otherwise be room temperature

Suppose the sun were to suddenly disappear. what would happen to the orbital path of earth? it would stay the same, but the earth would speed up. it would stay the same, but the earth would slow down.

Two cars collide in an intersection. the hoods of both cars collapse and the two cars rebound off each other. what type of collision was this

What is the ph of ammonia

5. Prolonged exposure to stress can affect the body in what ways?

What is the difference between analog and digital sound transmission?

A 20 kilogram ball rolls down a 10 meter ramp at the rate of 15 meters per second.

Why does the falling speed of a ball keeps increasing every second when it is dropped from a building?

In your own words describe an interaction between the chromosphere and the hydrosphere

Ming drives across Arizona in the middle of July. She drives for two hours in the hot, desert sun before stopping for some snacks. Which statement describes the condition of the tires on Ming's car when she stops? A.