Acar is travelling at a constant speed on a flat road
true or false
-the car is in equil...
Physics, 29.09.2019 18:30 marbuigues9171
Acar is travelling at a constant speed on a flat road
true or false
-the car is in equilibrium (t/f)
-the car is accelerating (t/f)
-there is a net force on the car (t/f)
-there is work being done on the car (t/f)
Answers: 1
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 13:30
It is necessary to determine the specific heat of an unknown object. the mass of the object is 201.0g it is determined experimentally that it takes 15j to raise the temperature 10°c. what is the specific heat of the object? 3,020,000 j/kg ∙ k 1500 j/kg ∙ k 0.00130 j/kg ∙ k 7.46 j/kg ∙ k
Answers: 3
Physics, 23.06.2019 15:40
The force required to make an object travel along a circular path is
Answers: 1
Physics, 23.06.2019 18:30
The chemical equation below shows the reaction of methane (ch4) and oxygen gas (o2) to form carbon dioxide (co2) and water (h2o). ch4 + 2o2 → co2 + 2h2o in this equation, which of the following are products? a. methane and oxygen gas b. carbon dioxide and methane c. carbon dioxide and water
Answers: 1
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