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NemiM [27]
3 years ago
13

Can someone solve it?

Physics
1 answer:
True [87]3 years ago
3 0

Answer:A

Explanation:

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Approximately 80% of the energy used by the body must be dissipated thermally. The mechanisms available to eliminate this energy
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Answer:

the correct answer is c) 23 g

Explanation:

The heat lost by the runner has two parts: the heat absorbed by sweat in evaporation and the heat given off by the body

     Q_lost = - Q_absorbed

     

The latent heat is

      Q_absorbed = m L

The heat given by the body

      Q_lost = M c_{e} ΔT

       

where m is the mass of sweat and M is the mass of the body

       m L = M c_{e} ΔT

        m = M c_{e} ΔT / L

let's replace

        m = 90  3.500  1.8 / 2.42 10⁶

 

        m = 0.2343 kg

reduced to grams

        m = 0.2342 kg (1000g / 1kg)

        m = 23.42 g

 the correct answer is c) 23 g

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One consequence of Newton's third law of motion is that all actions have equal and opposite reactions. <em>(C)</em>

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