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Marina86 [1]
3 years ago
13

A 100-m-long wire carrying a current of 4.0 A will be accompanied by a magnetic field of what strength at a distance of 0.050 m

from the wire? (magnetic permeability in empty space µ0 = 4π ´ 10-7 T×m/A)
Physics
1 answer:
solong [7]3 years ago
3 0

Answer:

1.6 x 10^-5 T

Explanation:

i = 4 A

r = 0.05 m

The magnetic field due to long wire at a distance r is given by

B = \frac{\mu _{0}}{4\pi }\times \frac{2i}{r}

B = 10^-7 x 2 x 4 / 0.05

B = 1.6 x 10^-5 T

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A 0.300 kg ball, moving with a speed of 2.5 m/s, has a head-on collision with at 0.600 kg ball initially at rest. Assuming a per
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Answer:

1.25 m/s

Explanation:

Given,

Mass of first ball=0.3 kg

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Momentum of 1st ball=mass of the ball*velocity

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Momentum of 2nd ball=mass of the ball*velocity

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Since the first ball undergoes head on collision with the second ball,

momentum of first ball=momentum of second ball

0.75 kg m/s=0.6 kg*velocity of 2nd ball

Velocity of 2nd ball=0.75 kg m/s ÷ 0.6 kg

=1.25 m/s

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What is conflict resolution?
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E<br> 3.6 What force is needed to give a mass of<br> 20 kg an acceleration of 5 m/s??
luda_lava [24]

Explanation:

  • Mass(m)= 20kg
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  • Force(F)= ?

We know that,

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Hence, the needed force is 100N.

6 0
2 years ago
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