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Lana71 [14]
1 year ago
8

a college student produces about 100 kcal of heat per hour on the average what is the rate of energy production and joules

Physics
1 answer:
Bond [772]1 year ago
6 0

Given:

Amount of heat produced = 100 kcal per hour

Let's find the rate of energy production in joules.

We know that:

1 calorie = 4.184 Joules

1 kcal = 4.184 Joules

To find the rate of energy production in Joules, we have:

\begin{gathered} Rate=100\ast4.184 \\  \\ \text{Rate}=418.4\text{ KJ/hour} \end{gathered}

Therefore, the rate of energy production in joules is 418.4 kJ/h which is equivalent to 418400 Joules

ANSWER:

418.4 kJ/h

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\frac{K_{rot}} {K_T} = 0.019

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That equation are perfect for the 4 wheel, however we need a similar expresion for the ycycle

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The total energy can be expressed as follow,

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Whit this expression is easy to find te ratio of rotational kinetic energy, we need to make the relation between K_{rot} \Rightarrow K_T

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\frac{K_{rot}} {K_T} = \frac{2I}{2I+mr^2} \\\frac{K_{rot}} {K_T} = \frac{2(0.08)}{2(0.08)+(79)(32)}

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