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mr Goodwill [35]
2 years ago
11

A student models convection currents in a laboratory activity

Physics
1 answer:
Agata [3.3K]2 years ago
3 0

The convection currents in the student’s model different from the convection currents in Earth’s atmosphere and oceans, The sun. Because heats is obtained from the sun, is transferred to the Earth's atmosphere and seas.

<h3 /><h3>What is an experiment?</h3>

An experiment is a technique used to prove or disprove a theory, or to test the efficacy or probability of something that has never been done before.

The burner underneath the kettle is the source of heat in this experiment. On Earth, however, this is not the case since the source of heat is the Sun, which heats us from above rather than below.

Convection currents continue to flow in the same direction because when the sun heats air particles on the Earth's surface,

They ascend, but cool as they continue to climb. This causes them to descend, where they are heated up once more.

Hence,heats is obtained from the sun, is transferred to the Earth's atmosphere and seas.

To learn more about the experiment, refer to the link;

brainly.com/question/11256472

#SPJ4

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Answer:

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Hailey is preparing a debate on the benefits of using synthetic polymers over natural polymers, and she wants to create a list t
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<h3><u>Answer;</u></h3>
  • Synthetic polymers are flexible.
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  • Synthetic polymers are lightweight.
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At room temperature, a typical person loses energy to the surroundings at the rate of 62 W. If this energy loss has to be made u
Alex_Xolod [135]

To solve this problem it is necessary to use the given proportions of power and energy, as well as the energy conversion factor in Jules to Calories.

The power is defined as the amount of energy lost per second and whose unit is Watt. Therefore the energy loss rate given in seconds was

P = \frac{E}{t} \rightarrow E= Energy, t = time

P = 62W = 62 \frac{J}{s}

The rate of energy loss per day would then be,

P = 62\frac{J}{s} (\frac{86400s}{1day})

P = 5356800 \frac{J}{day}

That is to say that Energy in Jules per lost day is 5356800J

By definition we know that 1KCal = 4.184*10^{6}J

In this way the energy in Cal is,

E = 5356800J \frac{1KCal}{4.184*10^{6}J}

E = 1279.694 KCal

The number of kilocalories (food calories) must be 1279.694 KCal

4 0
4 years ago
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