An aero plane, flying in a straight line at a constant height of 500m with a speed of 200ms-1, drops an object. The object takes a time T to reach the ground and travels a horizontal distance d in doing so. Taking g as 10 ms-2 and ignoring air resistance, which one of the following gives the values of t and d?

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the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.