Answers: 2
Physics, 23.06.2019 03:30
Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.
Answers: 1
Physics, 23.06.2019 20:00
Suppose you increase your walking speed from 4 m/s to 13 m/s in a period of 3 s. what is your acceleration?
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Physics, 23.06.2019 22:30
19. determine the final state and its temperature when 150.0 kj of heat are added to 50.0 g of water at 20 Âșc. (specific heat of water = 4.184 j/g Âșc; specific heat of steam = 1.99 j/g âą Âșc; âhfus (h2o) = 6.01 kj/mol; âhvap (h2o) = 40.79 kj/mol). (5 points)
Answers: 3
Physics, 23.06.2019 22:30
Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pΜ1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 50 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/k.
Answers: 1
A water pump draws about 1.1 A when connected to 228.9 V. What is the cost (with electrical energy a...
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