You do 20 J of work pushing a crate up a ramp. If the output work from the inclined plane is 11 J, then what is the efficiency of the inclined plane?

Suggest a reason why food labels provide information about the energy released by the food?

The proportion of carbon-14 in an organism is useful in figuring out the age of that organism after it dies because ... ? A. carbon-14 decays to carbon-13. B. the proportion of carbon-14 is stable forever. C.

a roller coaster needs more kinetic energy to reach the top of a tall Hill what are two ways that the engineer can increase the amount of kinetic energy the roller coaster has

A fuel cell that is becoming very popular for cars runs on: hydrogen gas oxygen gas nitrogen gas chlorine gas

When an 8-V battery is connected to a resistor, 2 A of current flows in the resistor. What is the resistor's value? A. 2 ohms B. 4 ohms C. 8 ohms D. 16 ohms E. more than 16 ohms

Define the term volt.

A baseball player was hit by a baseball in the left eye and complains of double vision. What should you do? A. Restrict spinal movement B. Assess pupillary response C. Perform a detailed exam D. Apply ice to orbit

An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?

If a 1.50 kg mass revolves at the end of a string 0.50 m long, and its tangential speed is 6.0 m/s, calculate the centripetal force.