Apower station burns 75 kilograms of coal per second. each kg of coal contains 27 million joules of energy.
a. what is the total power of this power station in watts? (watts=joules/second)
b. the power station’s output is 800 million watts. how efficient is this power station?

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward