The voltage drop across an electrical resistor is 10 volts and the current through it is 1 ampere. Heat is dissipated from the resistor to the surrounding air according to the relation Q =-h(T-T amb) is the ambient air temperature,25C; T is the temperature of the resistor, and h, the heat transfer coefficient, is equal to 0.2 J/Ks. Compute the steady-state temperature of the resistor, that is, the temperature of the resistor when the energy loss from the resistor is just equal to the electrical energy input.
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Physics, 22.06.2019 01:30
The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation
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Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.
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James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the
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The voltage drop across an electrical resistor is 10 volts and the current through it is 1 ampere. H...
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