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timofeeve [1]
3 years ago
12

If two waves interact in destructive interference, which of the following will be true regarding the new wave formed?

Physics
2 answers:
LekaFEV [45]3 years ago
7 0
The guy above is correct, it is B :)
AlekseyPX3 years ago
6 0

Answer:

b

Explanation:

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if a torque of 55.0 N/m is required and the largest force that can be exerted by you is 135 N what is th e length of the lever a
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Answer:

r=0.41m

Explanation:

Torque is defined as the cross product between the position vector ( the lever arm vector connecting the origin to the point of force application) and the force vector.

\tau=r\times F

Due to the definition of cross product, the magnitude of the torque is given by:

\tau=rFsin\theta

Where \theta is the angle between the force and lever arm vectors. So, the length of the lever arm (r) is minimun when sin\theta is equal to one, solving for r:

r=\frac{\tau}{F}\\r=\frac{55\frac{N}{m}}{135N}\\r=0.41m

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