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GrogVix [38]
3 years ago
13

What is electricity?

Physics
1 answer:
ASHA 777 [7]3 years ago
8 0

Answer:

The flow of electric charge

Explanation:

Electricity:It is defined flow of electric charge.

It is defined as the flow of charge per unit time.

Electric charge can be negative or positive .

Mathematical representation :

If charge Q flowing through the conductor and time taken in flow of charge is t seconds.

Then, current=I=\frac{Q}{t}

S.I unit of current is Ampere.It is scalar quantity.

Answer:The flow of electric charge.

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A ball is dropped from the top of a building.After 2 seconds, it’s velocity is measured to be 19.6 m/s. Calculate the accelerati
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'A ball is dropped from the top of a building' indicates that the initial velocity of the ball is zero.

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The momentum of an object is proportional to its weight and speed.<br> a. true<br> b. false
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At one instant, the center of mass of a system of two particles is located on the x-axis at 2.0 cm and has a velocity of (5.0 m/
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Answer:

Explanation:

Given that,

At one instant,

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Xcm = 2m

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M1=? X1 =0

The other has a mass M2=0.1kg

And it is at rest at position X2= 8m

a. Center of mass is given as

Xcm = (M1•X1 + M2•X2) / (M1+M2)

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2 = (0+ 0.8) /(M1 + 0.1)

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2(M1+0.1) = 0.8

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M1 = 0.6/2

M1 = 0.3kg

b. Total momentum, this is an inelastic collision and it momentum after collision is given as

P= (M1+M2)V

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c. Velocity of particle at origin

Using conversation of momentum

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P(before) = M1 • V1 + M2 • V2

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We already got P(after) = 2 •i kgm/s in part b of the question

Then,

P(before) = P(after)

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V1 = 2/0.3 •i

V1 = 6 ⅔ •i m/s

V1 = 6.667 •i m/s

4 0
3 years ago
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