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faust18 [17]
3 years ago
6

A small truck has a mass of 1200 kg. If it is traveling at a velocity of 42.5 m/s, determine the kinetic energy.

Physics
1 answer:
LuckyWell [14K]3 years ago
3 0

Answer:

25,500J

Explanation:

KE =1/2 mv^2

Mass=1200kg

Velocity =42.5m/s

KE = 1/2 x 1200 x 42.5

=25,500J

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Experimental Evidence.

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1. In Newton’s ring experiment, the diameter of the 5th ring is 0.30 cm and diameter of 15th the ring is 0.62 cm. Find the diame
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Answer:

Diameter of Newton’s 5th ring = 0.30 cm

Diameter of Newton’s 15th ring = 0.62 cm

Diameter of Newton’s 25th ring = ?

From Newton’s rings experiment we infer that

D2n+m − D2n = 4λmR

For the 5th and 15th rings we have

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We equate the two derivatives

Equation (2) = Equation (1)

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Substituting the values into the equation

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D25 = 0.8239 cm

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3 years ago
An electromagnetic wave is a kind of a wave which,
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The visible spectrum refers to the tiny portion of the electromagnetic spectrum that we ________.
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are able to see/observe

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Answer:

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Explanation:

Starting from the equation:

v=\frac{x_f-x_i}{t}

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v\cdot t = \frac{x_f-x_i}{t}\cdot t \\vt = x_f - x_i

And then, let's divide by v on both sides:

\frac{vt}{v}=\frac{x_f-x_i}{v}\\t=\frac{x_f-x_i}{v}

So, finally

t=\frac{x_f-x_i}{v}

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