A quantity that has only a magnitude but no direction associated with it is called a __________
Fill in the blank(s) with correct word
scalar
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A two-shell-four-tube-pass heat exchanger has an overall heat exchanger conductance of 350 W/m^2?K and is used to cool 10 kg/s of engine oil from 180ºC to 80ºC. If water at 20ºC is used to cool the oil and the water temperature leaving the heat exchanger is 60ºC, determine (a) mass flow of water required and (b) surface area of the heat exchanger.
What will be an ideal response?
What is the mass of a ball moving at 3 m/s with a momentum of 48 kg?m/s?
A) 4 kg B) 12 kg C) 16 kg D) 144 kg E) none of these
A nonuniform, 80.0-g, meterstick balances when the support is placed at the 51.0-cm mark. At what location on the meterstick should a 5.00-g tack be placed so that the stick will balance at the 50.0 cm mark?
A) 16.0 cm B) 67.0 cm C) 66.0 cm D) 35.0 cm E) 34.0 cm
A line representing a wave front for a wave should be drawn:
a. from the source to the receiver. b. from one crest to the preceding crest. c. along one of the crests of the wave. d. in the direction the wave is moving.