What is heat?

A. A measure of the movement of molecules inside an object

B. The transfer of energy from a hot object to a cold object

C. The force exerted on an area by an object

D. A measure of mass per unit volume of an object

Determine which three temperature readings all mean the same thing? 273 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit 373 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit 100 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit

A G main sequence star spends far more time on the main sequence than an O main sequence star because

Indirect observations are as important in scientific endeavor as direct observations. True False

What makes conductors conductors?

A train travels 350 km in 2.5 hours. What was the average speed of the train?

According to Special Relativity, which statement is true: 1. The linear dimension of an object is the same in any two inertial systems 2. The linear dimension of an object is shorter in a system that uses two clocks 3.

which of the following are good conductors under normal conditions? A. Penny B. copper wire C. a dime D. plastic E. aluminum foil F. water

Which example involves the transformation of chemical energy directly into light energy? A) a wind mill B) a glow stick C) photosynthesis D) a hydroelectric dam (I'm pretty sure it's b, but just want to make sure)

What is heat? A. A measure of the movement of molecules inside an object B. The transfer of energy from a hot object to a cold object C. The force exerted on an area by an object D. A measure of mass per unit volume of an object

What is the difference between a battery losing charge (discharging) and a capacitor losing charge (discharging) ?