The final angular velocity is 8.6 rad/s
Explanation:
To solve this problem, we can use the equivalent of the suvat equations for the angular motion. In particular, we can use the following equation:
where:
is the final angular speed
is the initial angular speed
is the angular acceleration
t is the time
For the propeller in this problem, we have:
is the initial angular speed
is the angular acceleration
Substituting t = 3.0 s in the equation, we find the final angular velocity:
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Answer:
Since the resistors are in series, all of them carry the same current I.
if the potential drop across the 12 Ω is 4 V
I = 4 / 12 = 1/3 = .333 amp
a) 25 Ω * .333 amp = 8.33 V
b) 62 V * .333 amp = 20.7 V