How is power defined? A. the quantity of work accomplished. B. the direction of the work. C. the total distance an object is moved. D. the rate at which work is accomplished

Which is NOT a way to change the rate of a chemical reaction? a.) change the surface area of the reactants b.) change the temperature of the reactants c.) include a catalyst d.) change the beaker it's being mixed in e.

What are the two things produced during a collision?

How does a star's appearance change based on the elements inside it?

Why is it easier for older male skaters to jump over high objects and not for the skater kids?

A 70 kg box is pulled by a 400 N force at an angle of 30° to the horizontal. The force of kinetic friction is 75 N.

Claudia throws a baseball to her dog. Which free-body diagram shows the baseball when it's flying horizontally in midair? (Assume no air resistance.)

What causes an air conditioned to turn on

A turntable is spinning on a frictionless axle when a ball of putty is dropped onto it from above. The putty sticks to the turntable when it lands. Is angular momentum conserved for the turntable and putty (the system) during this process?

The speedof a boat in still water is v. The boat is to make a round-trip ina river whose current travels at speed u.

Why are there so few working wave power stations?