How do you calculate displacement on a graph

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Sitting in a chairlift, Rebecca has a gravitational potential energy of 5,997.6 J. If Rebecca has a mass of 51 kg, how high off the ground is the lift? OA) 6 m OB) 12 m OC) 118 m OD) 612 m

A farmer uses 3450 J of energy on a wheel and axle to lift a 15 kg bucket of water 20 m to the top of her well. What is the efficiency of the system?

10. Juan wants to see how air expands when it is heated. He is able to use any of the following supplies - a balloon, a heat lamp, a spring scale, and a meter stick. Which is the best procedure to follow for the experiment? A.

A small mailbag is released from a helicopter that is descending steadily at 1.39 m/s. (a) After 5.00 s, what is the speed of the mailbag? (b) How far is it below the helicopter?

When reading a grid reference number corresponding to a grid on a map, you read the pair of numbers corresponding to the what corner of the square.

In radiation therapy a. isotopes are traced through a chemical reaction. b. unhealthy human cells are destroyed. c. radioactive isotopes are used as fuel. d. weak spots in water pipes are found.

If the density of the fuel is 0.821 g/ml, what mass of fuel has the airplane taken on?

Which of the following is not true of the seasons? A. The Earth is closer to the sun during the summer and farther away from the sun during the winter. B. The seasons are caused the tilt of the Earth on its axis. C.

The presently accepted value of the hubble constant gives an age of