Maxwell right hand thumb rule: if we hold a current carrying conductor in our right hand such that the thumb indicates the direction of current then the curling of fingers shows the direction of magnetic field around the conductor.

Here the current is counterclockwise so by use of Maxwell right hand thumb rule the direction of magnetic field is straight up.

Using Fleming right hand rule that States that if the fore-finger, middle finger and the thumb of left hand are stretched mutually perpendicular to each other, such that fore-finger points in the direction of magnetic field, the middle finger points in the direction of the motion of positive charge, then the thumb points to the direction of the force.

So, the current, when viewed from above, seems to move around loop in counterclockwise direction points straight up is because of Maxwell's Thumb Rule.

To know more about magnet, refer: brainly.com/question/17143116

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6 0

7 months ago

When an old lp turntable was revolving at 33.3 rpm, it was shut off and uniformly slowed down and stopped in 5.5 seconds. throug

velikii [3]

First, let's convert the initial angular speed from rpm (rev/min) into rad/s, keeping in mind that $1 rev = 2 \pi rad$ and 1 min=60 s:
$\omega_i = 33 \frac{rev}{min}=33\frac{rev}{min} \cdot \frac{2 \pi rad}{60 s}=3.45 rad/s$

Now we can find the angular acceleration of the lp, keeping in mind that the final speed is zero:
$\alpha = \frac{\omega_f - \omega_i}{t}= \frac{0-3.45 rad/s}{5.5 s}=-0.63 rad/s^2$
and the acceleration is negative because the LP is decelerating.

Now we can find the angle covered by the LP from the beginning to the end of its motion:
$\theta (t)= \omega_i t + \frac{1}{2}\alpha t^2 = (3.45 rad/s)(5.5 s)+ \frac{1}{2}(-0.63 rad/s^2)(5.5 s)^2=$
$=9.45 rad$

And finally, we can convert it into number of revolutions:
$1 rev : 2 \pi rad = x: 9.55 rad$
$x= \frac{9.55}{2 \pi}= 1.52 rev$

4 0

3 years ago

Do solids flow and how do they do that

Eva8 [605]

Answer:

solids cannot flow because the molecules a held tightly together

7 0

3 years ago

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