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If the work output of a simple machine is 40 J and the work input is 50 J, the percent efficiency is %.
A. 5/4
B. 10
C. 80
D. 90

If you mix chlorine lithium and nickel together which two elements would be the most reactive

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

What is created when solids,liquids,an gases mix with one another