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2 years ago

Explain about magnetic force

Physics

2 answers:

Elan Coil [88]2 years ago

5 0

Answer:

magnetic force is the force we're to magnet get attracted from the force

SashulF [63]2 years ago

3 0

Answer:

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.

Explanation:

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Semenov [28]

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2 years ago

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A 1500 kg car drives around a flat, 50 m diameter track, starting from rest. The drive wheels supply a small but steady 525 N fo

krok68 [10]

Answer:

No. of revolutions before the car slides off is 2

Solution:

As per the question:

Mass of the car, m = 1500 kg

Diameter of the track, d = 50 m

Force, F = 525 N

Coefficient of static friction, $\mu_{s} = 0.90$

Now,

The acceleration in the tangential direction is given by:

$F = ma_{T}$

$525 = 1500\times a_{T}$

$a_{T} = 0.35\ m/s^{2}$

Here, the centripetal force is given by the friction force:

$\frac{mv^{2}}{R} = \mu mg$

Thus

$v = \sqrt{\mu gR} = \sqrt{0.90\times 9.8\times 25} = 14.849\ m/s$

Time taken by the car is given by:

v = v' + at

v' = initial velocity = 0

Thus

$t = \frac{v}{a} = \frac{14.849}{0.35} = 42.426\ s$

Total Distance covered, d is given by:

$v^{2} = v'^{2} + 2ad$

$14.849^{2} = 0^{2} + 2\times 0.35d$

d = 341.99 m

Distance covered in 1 revolution is the circumference of the circle, d' = $2\pi R$

Now, the no. of revolutions is given by:

$n = \frac{d}{d'} = \frac{314.99}{2\pi \times 25} = 2$

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3 years ago

Hiw many times lager then a centimeter is a dekagram

Digiron [165]

Answer: 1 000 times

Explanation: 1 000 centimetre is equal to 1 dekacemetre.

Using conversion will apply in converting every number.

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3 years ago

Sam is walking through the park. He hears a police car coming down the street toward him. What happens to the sound of the siren

geniusboy [140]

I believe it is the first one.
This is because of the Doppler Effect.
The Doppler Effect is when the frequency of the wave changes for an observer moving relative to the wave source.
Basically, as the police car moves away from you, the distance between you and the car increases, which makes the sound waves spread out.

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3 years ago

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According to the theory of plate tectonics, what drives the motion of the continents?

Alex

I’m deciding between E or D.. because for E it’s saying it’s changing ocean currents, but I’m thinking does that mean the earths precipitation or their climate. Best go with E, hope this helps

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3 years ago

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