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Naya [18.7K]
3 years ago
9

What symbol represents energy that moves from a hot object to a cooler object?

Physics
1 answer:
strojnjashka [21]3 years ago
6 0
The correct answer is 
<span>C) Q

In fact, the symbol Q represents the heat, which is the form of energy transferred from a hot object to a cooler object. Heat generally refers to the energy related to the motion of the particles, and it is related to the temperature of an object: the higher the temperature of an object, the faster the particles of the object move, and so the object can transfer more energy (as heat) to other objects with lower temperature.</span>
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Answer:

E = 0.18 J

Explanation:

given,

Potential of the battery,V = 9 V

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Energy delivered in the circuit is equal to E = 0.18 J

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4 years ago
A small block with a mass of 0.0600 kg is attached to a cord passing through a hole in a frictionless, horizontal surface (Figur
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Answer with Explanation:

We are given that mass of block=0.0600 kg

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Distance of block  from the hole when the block is revolved=9\times 10^{-2}m

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T=\frac{mv^2}{r}

Because tension is equal to centripetal force

Substitute the values

T=\frac{0.06\times (0.63)^2}{0.47}=0.05 N

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c.Work don=Final K.E-Initial K.E

W=\frac{1}{2}m(v^2-v^2_0)

W=\frac{1}{2}(0.06)((3.29)^2-(0.63)^2)

W=0.31 J

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