Answer:
The two teams pull with equal force as long as they're pulling?
Explanation:
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Answer: choice C)Water molecules are cohesive
Explanation:
The observations point to the <em>cohesive qualities and surface tension of water.</em>
<u>Cohesion refers to the attraction of molecules for other molecules of the same kind, and water molecules have strong cohesive forces thanks to their ability to form hydrogen bonds with one another.</u>
Water is polar and a great solvent but these are not related to the observations stated in the question.
<u>Answer:</u> The increase in temperature is 10°C
<u>Explanation:</u>
To calculate the change in temperature, we use the equation:
where,
q = heat absorbed = 200 kCal = 200,000 Cal (Conversion factor: 1 kCal = 1000 Cal)
m = mass of water = 20 kg = 20000 g (Conversion factor: 1 kg = 1000 g)
c = specific heat capacity of water = 1 Cal/g.°C
= change in temperature = ?
Putting values in above equation, we get:
Hence, the increase in temperature is 10°C
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It won't let me answer, it just says "rude! please change your answer."
