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Alex787 [66]
2 years ago
11

A world class runner can run long distances at a pace of 10 km/hour. That runner expends 700 kilocalories of energy per hour.

SAT
1 answer:
Sveta_85 [38]2 years ago
8 0

The power that the runner is exerting while running is 814.1 Watts.

<h3>How to find the power?</h3>

In this question, we need to find the power (in watts) that the runner is exerting while running.

Power is defined as the quotient between the used energy and the time in which that energy is used.

So here we have:

P = \frac{700 Kcal}{1h}

And we know that <u><em>1 kcal/h = 1.163 watts</em></u>

Then we can rewrite:

P = \frac{700 Kcal}{1h} = 700 Kcal/h = 700*(1.163 W) = 814.1 W

If you want to learn more about energy, you can read:

brainly.com/question/21222010

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How many electrons pass through a 20-ohms resistor in 10 min if there is a potential drop of 30 volts across it?
tangare [24]

The number of electrons passes through 20 ohms resistor in 10  minutes is 5.625e+21.

<h3>What is a resistor?</h3>

In an electronic circuit, a resistor is an electrical component that limits or regulates the flow of electrical current.

Given, the resistance is 20 ohms.

The potential difference is 30 volts

Time is 10 minute

By the formula of current

\rm I = \dfrac{30}{20} = 1.5 \;C/s

The charge flowing through the resistor is 1.5 C/s

1 electron charge is 1.6e+19

Now, the number of electrons passing through a 20 ohms resistor is

\dfrac{1.5}{1.6e+ ^2^1} = 0.9375e+^1^9

In 10 minutes

0.9375e+^1^9 \times 60 \times 10 = 5.625e+^2^1

Thus, the number of electrons passes through 20 ohms resistor in 10  minutes is 5.625e+21.

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How does your power output in climbing the stairs compared to the power output of a 100 watt.
Dmitry_Shevchenko [17]

Answer:

the power output is the amount of gravitational potential energy being carried out by releasing electricity

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29 out of 50 is what percent
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58 percent because you divide 29 by fifty and you get the first 2 digits after the decimal.

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alexira [117]

The workers were motivated to organize the pullman strike because the company cut their wages.

Pullman strike was resultant of reducing in compensation and terminating workers in response to a preferred currency collapse. An average pay cut was 33 percent. But on occasion, it increases to between 40% and 50%. The workforce's wage had already been reduced without the subsequent rent discounts.

The fact that the employee compensation was cut while the rent remained the same was the main reason for the Pullman strike. Beginning on May 11 of the same year, 1894, it was virtually an all-out railroad strike in the United States. As a gesture of goodwill toward the American labor movement in the midst of the crisis, President Grover Cleveland and Congress established Labor Day as a public holiday on June 28.

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