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Alexus [3.1K]
3 years ago
10

PLEASE HELP AS SOON AS POSSIBLE ILL MARK BRALIEST TO WHOEVER IS CORRECT

Physics
1 answer:
Reptile [31]3 years ago
3 0

Answer:

There are two significant figures in 2.200 x 10^7

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A single circular loop of wire of radius 0.75 m carries a constant current of 3.0 A. The loop may be rotated about an axis that
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Answer:

B = 0.8 T

Explanation:

It is given that,

Radius of circular loop, r = 0.75 m

Current in the loop, I = 3 A

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When the orientation of the normal to the loop with respect to the direction of the magnetic field is 25°, the torque on the coil is 1.8 Nm.

We need to find the magnitude of the uniform magnetic field exerting this torque on the loop. Torque acting on the loop is given by :

\tau=NIAB\sin\theta

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B=\dfrac{\tau}{NIA\sin\theta}\\\\B=\dfrac{1.8}{1\times \pi \times (0.75)^2\times 3\times \sin(25)}\\\\B=0.8\ T

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3 years ago
At what speed will a box be falling at a time t = 0.75 s after being dropped?
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Explanation:

Initial speed(u)= 0 m/s (Ball is dropped)

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3 hours into minutes
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