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Fantom [35]
4 years ago
8

Please answer for 20 points

Physics
1 answer:
Nat2105 [25]4 years ago
4 0
C. Reduce friction between its moving parts
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Estimate the mass of water that must evaporate from the skin to cool the body by 0.55 ∘c. assume a body mass of 100 kg and assum
Gala2k [10]

Heat required to decrease the temperature of body is given as

Q = ms\Delta T

here given that

m = 100 kg

s = 4 J/g ^0C = 4000 J/Kg ^0C

\Delta T = 0.55^0C

now by above equation

Q = 100 \times 4000 \times 0.55

Q = 220,000 J

now in order to evaporate water the heat is given as

Q = mL

220000 = m \times 2.25 \times 10^6

m = 0.097 kg

m = 97 g

so 97 g of water will evaporate from the body

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3 years ago
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1. Why should you use scientific notation when writing big numbers?
Fynjy0 [20]

Answer:

It helps the answer look clean. It also makes the work easier to work with.

Explanation:

Instead of writing a lot of zeros, all you have to do is add exponents to the number to show how much the decimal moved.

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3 years ago
The potential energy of an object attached to a spring whose elastic constant is k is given by the formula p e space equals spac
Mademuasel [1]
You know the following:
k= 25N/m
x=1.5m
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4 years ago
Which type of cells in your eyes allows you to see the color violet?
BaLLatris [955]
The cones present on the retina are the cells that help you see the colors.....there are mainly three types....red blue and green, cones but they mix to generate different colours !
3 0
3 years ago
1. ______ the volume of a gas.
Triss [41]
Here are the answers to the given questions above.
1. Temperature and pressure determine the volume of gas. The answer for this would be option A.
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3. W</span><span>ater vapor turning is front is an example of evaporation. The answer would be option C.
Hope this helps.</span>
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3 years ago
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