Which statement best explains why objects are pulled towards earth's center

How can a parked car move? a. add force to balance all forces b. remove force to balance all forces c. add force to unbalance the forces d. remove all forces

Why do two elements silver and iron have different properties

if Luke pushes with 22 N of force on the wagon that is now filled with bricks but he cannot make you move how much work did Luke do

If the applied force changes to 520 N, what is the acceleration of the block up the ramp? Given mass = 46kg Angle of ramp = 50 degrees from horizontal Coefficient of friction = 0.38 Original Fa = 455.4 a = ?

Which statement correctly describes the formation of an electric current? A resistance causes electric charges to move from lower to higher potential. A voltage causes electric charges to move from lower to higher potential.

What factors determine whether a collision between two reactant molecules will result in a reaction?

As you brake your bicycle, your velocity changes from 20 east m/s to 10 east m/s in 5 seconds. What is your acceleration?

Some ancient civilizations used units of measure based on the length of certain seeds. what kind of problems might you expect with such a system?

You are standing on the SCALE The scale is on the floor. What are the forces on the SCALE?

which of the following is an example of a compound machine. a. a bicycle chain. b. a coffee mug. c. a paper cutter