State the sources of alternating current

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)