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Anastaziya [24]
3 years ago
7

in which of the situations listed below is energy being transferred as heat to the system in order for the system to do work? In

which situa tion is work being done on the system in order for energy to be trans- ferred from the system as heat? a. Two sticks are rubbed together to start a fire. b. A firecracker explodes. c. A red-hot iron bar is set aside to cool.
Physics
1 answer:
In-s [12.5K]3 years ago
5 0
The answer is option A, i think but i am not sure
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OlgaM077 [116]

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0.082 T

Explanation:

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Magnetic field magnitude (B) = ?

We know that, the angular frequency of the generator is given as:

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Plug in the value of 'f' and solve for 'ω'. This gives,

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Rewriting in terms of magnetic field, 'B', we get:

B=\frac{E}{NA \omega}

Plug in the given values and solve for 'B'. This gives,

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