300 A . s or 300C. The amount of electric charge that flows through an electric bulb that drain a current of 0.25 for 20 minutes is 300 A . s = 300C.
Current is the amount of charge moving through a cross-sectional area of a conductor per second, and the unit for current is the coulomb/second, or ampere. It is define by the equation I = Δq/Δt.
Let's clear Δq from I = Δq/Δt:
20 minutes contains 1200 seconds
Δq = I Δt = (0.25A)(1200s) =
Δq = 300 A . s or 300C.
Answer:
10kgm/s
Explanation:
Momentum = Mass * Velocity (both in standard units)
Momentum = 5 * 2 = 10kgm/s
Ep = mgh = 47.0 J
m = 0.8 kg
g = 9.81 m/s2 (average)
h = Ep / mg = 47 J / 0.8 kg * 9.81 m/s2 = 5.989 m
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