-When the masses were 2 x 10^5 km apart, the gracitational force was 4 x 10^20 N. What is the force when the distance is halved and they are 1 x 10^5 km apart? -Describe a trend you notice in the (mathematical) relationship between distance and gravitational force.

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

Four 5-gram blocks of metal are sitting out in the sun and absorb the same amount of heat energy. use the following specific heat capacity data to determine which block will increase its temperature the most.

The process of a material going through a change of state from a gas to a liquid