Twice the amplitude of each wave
I believe the best answer is law, as scientific laws are accepted to be true under the proper conditions.
Answer:
Explanation:
a) Power consumption is 4100 J/min / 60 s/min = 68.3 W(atts)
work done raised the potential energy
b) 75(9.8)(1000) / (3(3600)) = 68.055555... 68.1 W
c) efficiency is 68.1 / 68.3 = 0.99593... or nearly 100%
Not a very likely scenario.
Think of the formula force=mass x acceleration. even though they have the same acceleration, a train has more mass. is that helpful?
Momentum = mass x velocity
12 = 4 x v | ÷ both sides by 4
12 ÷ 4 =v
v= 3 m/s
