A temperature change in a reaction indicates a physical change.

a. True

b. False

Secondary evidence is the basis for drawing scientific conclusions is this true ir false

2 + 2 is 4. Minus one it's three

The price of a skateboard is reduced by 25 per cent. the new price is then reduced by a further 20 per cent. the final sale price of the skateboard is $59.24. find the original price of the skateboard and the price after the first reduction

Which of the following increases air's ability to hold water vapor? a. increase in wind speed c. decrease in temperature b. increase in temperature d. decrease in air pressure

Jesse travels 3.0 meters east and then turns and travels 4.0 meters north. What distance did Jesse travel?

A book falls of the table and hits the floor. Is work done? Why?

A person of 83 kg is in an elevator. If the elevator is moving at a speed of 5 m/s, what's the person's kinetic energy? Keep 4 significant figures a 1,004 J b 1,038 c 1,280 J d 980 J e 1,435 J

What two equations can be used to determine the speed of a wave

Which force has an infinite range and is always attractive?

A ramp with a mechanical advantage of 8 lifts objects to a height of 1.5 meters how long is the ramp