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Which object has the most thermal energy?

Physics

1 answer:

Fofino [41]3 years ago

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The answer would be C. 2kg of oxygen gas at 20*C

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Using the equation:
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W = work done (J)
P = power (Watts)
T = Time (s)

Substitute the values into the equation.

100 = 20p

Power = 5 watts

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This time particle A starts from rest and accelerates to the right at 65.5 cm/s

FrozenT [24]

Answer:

t = 4 s

Explanation:

As we know that the particle A starts from Rest with constant acceleration

So the distance moved by the particle in given time "t"

$d = v_i t + \frac{1}{2}at^2$

$d = 0 + \frac{1}{2}(65.5)t^2$

$d_1 = 32.75 t^2 cm$

Now we know that B moves with constant speed so in the same time B will move to another distance

$d_2 = 44 \times t$

now we know that B is already 349 cm down the track

so if A and B will meet after time "t"

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$d_1 = 349 + d_2$

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on solving above kinematics equation we have

$t = 4 s$

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