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Author Question: The surface tension of water is 0.073 N/m. How high will water rise in a capillary tube of diameter ... (Read 133 times)

imanialler

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on: Jul 27, 2018
The surface tension of water is 0.073 N/m. How high will water rise in a capillary tube of diameter 1.20 mm?
 
  What will be an ideal response?

Question 2

Ice cream, when eaten, gives about 2100. Calories/kg to the body. On the other hand, the body must give back energy to warm it up to body temperature (37C). Assuming ice cream has similar thermal properties to water:
 
  (a) 1/2 kg produces how much energy?
  (b) 1/2 kg absorbs how much energy to reach 37C?
  (c) What is the net gain or loss (eating 1/2 kg ice cream)?


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Li Jun

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Reply #1 on: Jul 27, 2018
Answer to Question 1

2.5 cm

Answer to Question 2

(a) 1.05 kCal = 4.40 MJ
(b) 0.24 MJ melting and warming
(c) 4.16 MJ net body gain


imanialler

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

sultana.d

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Reply 3 on: Yesterday
:D TYSM

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