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3 years ago

Work done by a gravitational force by lowering the bucket into the well is

Physics

1 answer:

katovenus [111]3 years ago

3 0

Answer:

when we lower a bucket into a well to fetch water, the work done by gravity is positive since force and displacement are in the same direction.

Explanation:

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It’s mass is what she needs

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3 years ago

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A certain superconducting magnet in the form of a solenoid of length 0.26 m can generate a magnetic field of 7.5 T in its core w

Mars2501 [29]

Answer:

Therefore

Number of turns in the solenoid is 19407.

Explanation:

Given:

Strength magnetic field at its center,

B = 7.5 T

length of solenoid = l = 0.26 m

Current, I = 80 A

To Find:

Turn = N = ?

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

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

Therefore,

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

Where,

B = Strength of magnetic field

l = Length of solenoid

N = Number of turns

I = Current

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

$N=\dfrac{Bl}{\mu_{0}I}$

Substituting the values we get

$N=\dfrac{7.5\times 0.26}{4\pi\times 10^{-7}\times 80}=19406.84=19407$

Therefore

Number of turns in the solenoid is 19407.

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3 years ago

A car travels from 55mps to 10 seconds. What is the acceleration?

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Answer: 5.5m/s^2

Explanation:

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A direct result of the Newlands reclamation Act was the

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All of the following could describe an individual with antisocial personality disorder except __________. A. impulsive B. manipu

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D. responsible

Explanation:

Individuals with antisocial personality disorder are not responsible. They are often aggressive, impulsive and quite manipulative.

Antisocial personality disorder is a mental disorder in which a person violates the rights of others without feeling any remorse for doing so.

People with such disorders have a high tendency of breaking rules and laws in the society.
They are often manipulative and tends to make the society favor them.
They carryout activities without a forethought i.e impulsive.
They live a chaotic and irresponsible life feeling not duty bound to the society.
People with this disorder can be aggressive too.

Often times, this problem can be remedied by therapy

learn more:

Psychological disorder brainly.com/question/4211983

#learnwithBrainly

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3 years ago