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3 years ago

If the speed of a ball increased from 1m/s to 4m/s by how much would kinetic energy increase

1 answer:

3 0

Kinetic energy = (1/2) to mass and speed^2.

The formula of speed, and it will be squared.

multiply (4)^2 and it equals to 16.

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(SCIENCE) 22 POINTS AND CROWN ASAP

gayaneshka [121]

Answer:

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Explanation:

Net force includes addition or subtraction.

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3 years ago

A thin Nichrome wire connected to an ammeter surrounds a region of time-varying magnetic flux, and the ammeter reads 13 amperes.

Semenov [28]

Answer:

The current would be same in both situation.

Explanation:

Given that,

Current I = 13 A

Number of turns = 23

We need to calculate the induced emf

Using formula of induced emf is

$\epsilon=NA\dfrac{dB}{dt}$

For N = 1

$\epsilon=A\dfrac{dB}{dt}$

We need to calculate the current

Using formula of current

$i=\dfrac{\epsilon}{R}$

Put the value of emf

$i=\dfrac{A\dfrac{dB}{dt}}{R}$

Now, if the number of turn is 22 , then induced emf would be

$\epsilon'=NA\dfrac{dB}{dt}$

Then the current would be

$i'=\dfrac{\epsilon'}{NR}$

$i'=\dfrac{NA\dfrac{dB}{dt}}{NR}$

$i'=\dfrac{A\dfrac{dB}{dt}}{R}$

$i'=i$

Hence, The current would be same in both situation.

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3 years ago

How can we produce energy by turning a turbine?

maw [93]

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Mademuasel [1]

Answer:

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Explanation:brainlyist me

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