Three identical resistors are connected in parallel to a 12-V battery. What is the voltage of any one of the resistors?
A)
36 V
B)
24 V
C)
12 V
D)
4 V
E)
zero
C
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Molten iron is in a large foundry ladle at 1600ºC. Air at 150ºC is directly above the surface of the molten iron and the convective heat transfer coefficient is 300 W/m^2 ?K. Iron at atmospheric pressure has a saturation temperature of 1538ºC and a heat of fusion of 247.3 kJ/kg. If the convective heat transfer coefficient between the molten iron and the freezing iron is taken as 500 W/m^2, determine the time to form a 5-mmthick surface of solid iron in the ladle.
What will be an ideal response?