A 15.8 kg child on a 1.85 m long swing is pulled back to a 37.80 angle. How much PE does she have?

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.

What is the role of the water cycle in maintaining freshwater levels in lake and rivers?