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explanation step by step
Answer: Why does the cord of an electric heater not glow while the heating element does? The heating element of the heater is made up of alloy which has very high resistance so when current flows through the heating element, it becomes too hot and glows red. But the resistance of cord which is usually of copper or aluminum is very low so it does not glow.
Explanation:
Answer:
light doesn't need a medium through which to travel because the speed of light is experimentally constant
The instantaneous velocity of the object is its speed and direction at that instant.
