3 years ago

1.

Physics

1 answer:

LiRa [457]3 years ago

6 0

Answer:

different sample have different properties is not a characteristics of a compound ,

Explanation:

because compound will always same properties no matter how quantity is

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A solenoid is built with 870 turns uniformly distributed over a length of 0.390 m to produce a magnetic field of magnitude 1.00

Y_Kistochka [10]

Answer:

35.7 mA

Explanation:

The magnetic field inside a solenoid is given by:

$B=\mu_0 I n$ (1)

where

$\mu_0 = 4\pi \cdot 10^{-7} H/m$ is the vacuum permeability

I is the current

n is the number of turns per unit length

Since we have

N = 870 turns

L = 0.390 (length of the solenoid)

we can calculate n

$n=\frac{N}{L}=\frac{870}{0.390}=2230.8$

And now we can re-arrange eq.(1) to find the current, I:

$I=\frac{B}{\mu_0 n}=\frac{1.00\cdot 10^{-4} T}{(4\pi\cdot 10^{-7} H/m)(2230.8m^{-1})}=0.0357 A = 35.7 mA$

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3 years ago

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Black_prince [1.1K]

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3 years ago

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Svetlanka [38]

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Mechanical efficiency is a comparison of a machines work output with the work input. True or False?

mr_godi [17]

The answer to this question is true