The power rating of a clock is 10 w, and the cost of electrical energy is $0.15 per kilowatt-hour. rounded to the nearest cent, how much does it cost to run the clock for one whole week?

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.