A mechanical device requires 420 J of work to do 230 J of work to lift a crate. What is the efficiency of the device? 190% 0.5% 183% 55%

Treating all human blood and other potentially infectious material, as if known to be infectious, for bloodborne pathogens. A. Exposure Control Plan B. Engineering Controls C. Universal Precautions D. Personal Protective Equipment

Why is there a leap year day every four years? A. to compensate for the 1/2 day that the earth revolves around the sun each year B. To compensate for the 1/4 day that the earth revolves around the sun every year. C. because Galileo said so

How long would it take if you were traveling at 156 mph to cover 16miles

The red color of your jacket is due to?

A well in which the water rises on its own to a level above its aquifer Choose one: A. is called a successful well. B. always pushes water higher than the ground surface. C.

What is the value of 9682 when rounded to three significant figures

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is