Ycourses
phyc-121-lec-1912
week 13-14: thermal physics and energy in thermal process
how much heat energy must be removed from 100 g of oxygen at 24°c to liquefy it at -183°c? (the specific heat of
oxygen gas is 0.218 cal/g.°c, and its heat of vaporization is 50.9 cal/g.)
select one:
a. 14,400 cal
o
b. 19,200 cal
c. 9,600 cal
d. 2.400 cal
. 4,800 cal​

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Explanation:

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Philosophy is the result of people's desire to make sense of the world, including the existence and nature of god and how we as social animals should conduct ourselves. All of philosophy is related to human life for that reason. ... All knowledge is relevant to human lives

The movement can be observed outside the bus since you can see the houses or objects pass by. Assuming that the bus is moving froward rather than everything else moving backwards.

The towboat dissipate a power equal to 20 000 Watts. This is computed by first calculating the work which is the product of the applied force and the displacement (wherein you are to convert km to meters) giving you an answer of 18 000 000 Nm. Then divide this to the time, to get the power. Note time must be expressed in seconds. So, you'll end up having this, 18 000 000 Nm divided 900 s = 20 000 Watts.