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3 years ago

What properties does electrical resistance in a wire depend on?

Physics

2 answers:

Anvisha [2.4K]3 years ago

4 0

Answer:

Explanation:

You can always figure out something to say about a question like this if you have a formula to work with. Likely you do.

There are many ways it can be written

R = k * L / A

So here's the answer.

Resistance = k which depends of the properties of the material used to make the wire * the Length of the wire divided by the cross sectional area of the wire.

Misha Larkins [42]3 years ago

4 0

The electrical resistance of anything depends on its physical dimensions (length and cross-section area of a wire), and the substance of which it's composed.

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A diamond is cut such that the angle between its top surface and its bottom surface is α. For α=45∘, find the largest possible v

Reil [10]

Answer:

i = 61 degree

Explanation:

Given,

$\alpha =45^{o}$

Now, by the snell's law

$sin\theta_c=\frac{1}{n}\\sin\theta_c=\frac{1}{2.450}\\\theta_c=24.09^o$

Now,

Sin i / sin r = n 2 / n 1

sin i / sin r (45 - 24.09) = 2.45 / 1

i = 60.97 degree

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3 years ago

Over the past 100 years earths temperature

pogonyaev

Answer:

<u>Over the last century, the average surface temperature of the Earth has increased by about 1.0o F.</u>

Explanation:

hope this helps you!!

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2 years ago

A wave created by shaking a rope up and down is called a.

Sidana [21]

A wave created by shaking a rope up and down is called a:
(According to me and certified experts) Transverse wave.

If this helps, then please give Brainliest!

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2 years ago

Two cars having different weights are traveling on a level surface at different constant velocities. Within the same time interv

GuDViN [60]

I think you're saying that once you start pushing on the cars, you want to be able to stop each one in the same time.

This is sneaky. At first, I thought it must be both 'c' and 'd'. But it's not
kinetic energy, for reasons I'm not ambitious enough to go into.
(And besides, there's no great honor awarded around here for explaining
why any given choice is NOT the answer.)

The answer is momentum.

Momentum is (mass x speed). Change in momentum is (force x time).

No matter the weight (mass) or speed of the car, the one with the greater
momentum is always the one that will require the greater (force x time)
to stop it. If the time is the same for any car, then more momentum
will always require more force.

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3 years ago

1. A 1.5 kg ball moves in a circle that is 0.5 m in radius at a speed of 5.1 m/s.

kolezko [41]

Answer: a= 52.02 m/s²

Fc= 78.03 N

Explanation: Solution attached:

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3 years ago