Answers: 3
Physics, 23.06.2019 00:20
What efficiency of a car's engine when heat input is 200,000 joules and waste heat is 150,000 joules? a. 75% b. 35% c. 25% d. 85%
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 02:30
Asemipermeable membrane is placed between the following solutions. which solution will decrease in volume? solution a: 1.4% (m/v) starch solution b: 7.62% (m/v) starch
Answers: 2
Physics, 23.06.2019 03:10
You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move
Answers: 1
What has more momentum a large truck stopped at a stop sign or a motorcycle moving down the road....
History, 11.11.2020 20:20
Mathematics, 11.11.2020 20:20
Geography, 11.11.2020 20:20
Mathematics, 11.11.2020 20:20
Mathematics, 11.11.2020 20:20
English, 11.11.2020 20:20
Mathematics, 11.11.2020 20:20
Mathematics, 11.11.2020 20:20
History, 11.11.2020 20:20
English, 11.11.2020 20:20
Mathematics, 11.11.2020 20:20
Mathematics, 11.11.2020 20:20
Mathematics, 11.11.2020 20:20