Physics, 11.05.2021 01:00 arturocarmena10
Scientists have discovered a new specimen. It is microscopic yet complex, and scientists are having a hard time figuring out if it can be classified as a living thing or not. So far, scientists have observed some key things about the specimen. It performs photosynthesis, and since they have been watching, it has doubled in size. In fact, the scientists were able to retain one in the laboratory, and now they have four. The specimen has been kept in a petri dish in the lab; throughout the day, scientists observe it in different areas of the dish. Do you think the specimen is a living thing? Based on what you know about what makes a living thing, make your argument. Also include any observations that could be made that would make your argument even stronger.
Answers: 2
Physics, 23.06.2019 00:40
Asteel tube (k=50 w/mk) of inner and outer diameter di = 20mm and do=26mm, respectively, is used to transfer heat from hot gases flowing over the tube (h-hot = 200w/m2k) to cold water flowing through the tube (h-cold = 8000 w/m2k). what is the cold-side overall heat transfer coefficient uc? to enhance heat transfer 16 straight fins of rectangular profile are installed longitudinally along the outer surface of the tube. the fins are equally spaced around the circumference of the tube, each having a thickness of 2mm and a length of 15mm. what is the corresponding overall heat transfer coefficient uc? *solve for uc in both cases*
Answers: 1
Physics, 23.06.2019 03:00
The law of entropy can also be called the law of increasing disorder, but this law seems to contradict the existence of living organisms that are able to organize chemicals into organic molecules. prepare for a class debate on the validity of the following arguments: a. living things are not subject to the laws of thermodynamics. b. the increase in the universe's entropy due to life processes is greater than the decrease in entropy within a living organism.
Answers: 2
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