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belka [17]
3 years ago
13

Calculate the speed of magnetic field rotation in an ac machine with 4 poles operating at the frequency of 60 hz.

Physics
1 answer:
geniusboy [140]3 years ago
4 0
I think the answer is 15hz
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A cardio kickboxing class challenges 3 things. List them.
bagirrra123 [75]

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In a cardio kickboxing class, you will learn proper form for the famous jab, hooks,crosses, uppercuts, back kicks, front kicks.

Explanation:

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2 years ago
HELP ASAP! <br>why is rolling friction much smaller than sliding friction? Also give an example.​
IceJOKER [234]

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Rolling friction is much smaller than sliding friction because Rolling friction is considerably less than sliding friction as there is no work done against the body that is rolling by the force of friction. For a body to start rolling a small amount of friction is required at the point where it rests on the other surface, else it would slide instead of roll.

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6 0
3 years ago
A bowling (mass = 7.2 kg, radius = 0.11 m) and a billiard ball (mass = 0.38 kg, radius = 0.028 m) may each be treated as uniform
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Hope this helps you!

7 0
2 years ago
The uniform 100-kg I-beam is supported initially by its end rollers on the horizontal surface at A and B. by means of the cable
Ann [662]

I attached a free body diagram for a better understanding of this problem.

We start making summation of Moments in A,

\sum M_A = 0

P(6cos\theta)-981(4cos\theta)=0

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Then we make a summation of Forces in Y,

\sum F_y = 0

654+R-981 = 0

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At the end we calculate the angle with the sin.

sin\theta = \frac{3m}{4m+2m+2m} = \frac{3m}{8m}

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8 0
3 years ago
If θ=0rad
wlad13 [49]

Answer:

π

Explanation:

ok that is the answer ok

4 0
1 year ago
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