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3 years ago

How can i calculate distances between objects by using the concepts of echo location

1 answer:

5 0

Send wave from your location to the object and wait until echo is back.
Measure the time taken.

If you know the speed of wave (say sound wave), than just multiply by half time taken wave to return

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A solenoid with 500 turns, 0.10 m long, carrying a current of 4.0 A and with a radius of 10-2 m will have what strength magnetic

lakkis [162]

Answer:

Therefore,

Strength magnetic field at its center, B

$B = 2.51\times 10^{-2}\ T$

Explanation:

Given:

Turn = N = 500

length of solenoid = l = 0.10 m

Current, I = 4.0 A

Radius, r = 0.01 m

To Find:

Strength magnetic field at its center, B = ?

Solution:

If N is the number of turns in the length, the total current through the rectangle is NI. Therefore, Ampere’s law applied to this path gives

$\int\ {B} \, ds = Bl=\mu_{0}NI$

Where,

B = Strength of magnetic field

l = Length of solenoid

N = Number of turns

I = Current

$\mu_{0}=Permeability\ in\ free\ space = 4\pi\times 10^{-7}\ Tm/A$

Therefore,

$B =\dfrac{\mu_{0}NI}{l}$

Substituting the values we get

$B =\dfrac{4\times 3.14\times 10^{-7}\times 500\times 4}{0.10}=2.51\times 10^{-2}\ T$

Therefore,

Strength magnetic field at its center, B

$B = 2.51\times 10^{-2}\ T$

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