subject
Engineering, 22.04.2020 02:10 krojas015

Water at 58C is being used to cool apples from an initial temperature of 208 to 88C. The water flow over the surface of the apple creates a convective heat-transfer coefficient of 10 W/(m2 K). Assume the apple can be described as a sphere with an 8-cm diameter and the geometric center is to be reduced to 88C. The apple properties include thermal conductivity of 0.4 W/(m K), specific heat of 3.8 kJ/(kg K), 3 and density of 960 kg/m . Determine the time that the apples must be exposed to the water.

ansver
Answers: 3

Another question on Engineering

question
Engineering, 04.07.2019 12:10
On a average work day more than work place firs are reorted
Answers: 1
question
Engineering, 04.07.2019 18:10
Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2
Answers: 3
question
Engineering, 04.07.2019 19:10
With increases in magnification, which of the following occur? a. the field of view decreases. b. the ambient illumination decreases. c. the larger parts can be measured. d. the eyepiece must be raised.
Answers: 1
question
Engineering, 04.07.2019 19:20
The power source in a certain welding setup generates 3500w that is transferred to the low carbon steel work with a heat transfer factor of 0.85. the melting factor in the operation is 0.45. a continuous fillet weld is to be made with a cross-sectional area of 23 mm2 determine the travel speed at which the welding can be accomplished.
Answers: 3
You know the right answer?
Water at 58C is being used to cool apples from an initial temperature of 208 to 88C. The water flow...
Questions