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den301095 [7]
3 years ago
14

describe the interaction between the farmer and manufactured objects, such as farming equipment. how does energy flow ?

Chemistry
1 answer:
belka [17]3 years ago
5 0

Answer: The farmer spends the energy obtained from food as he works with his equipment. He might build a shed, plow his field, harvest crops, or even drive to town to pick up supplies.

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What is a reaction can occurs in the cell of organisms
zubka84 [21]

Answer:

Chemical reactions that take place inside living things are called biochemical reactions. The sum of all the biochemical reactions in an organism is called metabolism. Metabolism includes both exothermic (energy-releasing) chemical reactions and endothermic (energy-absorbing) chemical reactions.

Explanation:

Hope this helps :)

5 0
4 years ago
Describe a single measurement that you could make that shows that a kettle is less than 100% efficient (providing evidence that
alexgriva [62]

Answer:

As you haven't explained what measurements you took before solving this problem, I will explain the general procedure to evaluate the efficiency of a kettle. I hope it helps you. I´ll send an attachement file with the full answer, since I couldn't write it here.

I assume that the material that is going to be heated in the kettle is water.

1- You have to boil water in it and take the time it takes to its boiling point (in seconds).  

2- You have to evaluate the amount of energy the water absorbed Q with the efficiency formula which I explain in the attachement file.

3- Divide Q by the time it took to bring the water to boiling so you can have the power it consumed.

4- You divide the last value you obtained by the Kettles's power rating.  

5- Multiply the last value by 100 to obtain a percentage value of efficiency.

Explanation:

Efficiency is the ration of a machine's useful work, in this case how much energy the water absorbed to get to its boiling point divided by the time it took to get to this point, and the total energy expended, in this case the kettles's power rating.

7 0
4 years ago
The emission spectrum of sodium is shown below. What do the two bright
julia-pushkina [17]

The two lines show that these are the only two lines  that do not cause energy transition in the sodium atom. Option D

<h3>What are the two lines in the spectrum of sodium atom?</h3>

The spectrum of the sodium atom appears as a doublet. This implies that there are two lines in the spectrum and they appear as bright yellow lines that are not spaced apart in the spectrum.

The  two bright yellow vertical lines in the spectrum shows that these are the only two lines  that do not cause energy transition in the sodium atom.

Learn more about spectrum of sodium atom:brainly.com/question/27991355

#SPJ1

5 0
2 years ago
Select the answer that lists the radiation waves in order of increasing
lubasha [3.4K]
D. microwaves, Ultraviolet, x-rays
3 0
3 years ago
Read 2 more answers
Please help me pleaseeeeeeeeeeeeeeeeeeeee
Sliva [168]

Answer:

1. false

2.c. axis

Explanation:

I love science :)

carry on learning

6 0
3 years ago
Read 2 more answers
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