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Heat transfer
Convection cannot transfer heat because the convection currents move/circulate above the bulb.Conduction cannotapply her because air is a very poor conductor of heat. Since radiation does not require a material medium,it is therefore the only mode to transfer heat below the bulb source
Convection cannot transfer heat because the convection currents move/circulate above the bulb.Conduction cannotapply her because air is a very poor conductor of heat. Since radiation does not require a material medium,it is therefore the only mode to transfer heat below the bulb source
See lessTransformers
With d.c.cotinuos flow of current,there is no magnetic flux change.so no induced current in the secondary coil.
With d.c.cotinuos flow of current,there is no magnetic flux change.so no induced current in the secondary coil.
See lessWork Done on Horizontal Plane
Work is done only when the force applied causes motion in the direction of force. But when the applied force is perpendicular to the to the motion it means that even if the magnitude of force is resolved in the direction of motion,it will be zero.Therefore the product of force and distance moved wouRead more
Work is done only when the force applied causes motion in the direction of force. But when the applied force is perpendicular to the to the motion it means that even if the magnitude of force is resolved in the direction of motion,it will be zero.Therefore the product of force and distance moved would be zero work.
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