How does the matter and energy in a system naturally change over time?

A. It increases in energy.

B. It becomes more spread out.

C. It becomes more efficient.

D. It decreases in entropy.

How are gravity and friction similiar

If the only force acting on the rock is its weight, what is the magnitude of the rate of change of its angular momentum at this instant?

The force of gravity on an object varies directly with its mass. The constant of variation due to gravity is 32.2 feet per second squared. Write an equation represents f

What was the name of the equipment John Thomson did?

What type of reaction occurs when a candle is burned? A. Endothermic, because energy is absorbed B. Exothermic, because energy is released C. Endothermic, because energy is released D. Exothermic, because energy is absorbed

Physical properties within a period are more alike than physical properties within a group. True false

A 50-kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 30.0° below the horizontal is applied to the box. The coefficient of static friction between the box and the surface is 0.

As you heat a steak on a grill, what kind of energy are you increasing in the steak?

If Anya decides to make the star twice as massive, and not change the length of any crossbar or the location of any object, what does she have to do with the mass of the smiley face to keep the mobile in perfect balance?

What is the process in which the work of scientists is evaluated by other researchers? a. Scientific critique c. scientific inquiry b. Peer review d. Inquisition