Physics, 23.09.2019 04:30 myalee1419
What are some physical changes that occur at school? at home ? in nature ?
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Physics, 22.06.2019 11:30
If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?
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Physics, 22.06.2019 12:00
If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?
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Physics, 22.06.2019 15:30
How many neutrons does element x if it’s atomic number is 28 and its mass number is 87
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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
What are some physical changes that occur at school? at home ? in nature ?...
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