Question
A car travels at a uniform speed of 45 km/h for 210 km
and then travels for 420 km at a uniform speed of 70 km/h. What is the average speed of the car during the entire journey?Solution
The correct answer is D
What happens to resistance of a wire when its length is doubled (keeping area constant)?
__________ is the metal used for making the filament of the light bulb.
A new technology which provides the ability to create an artificial world and have people interact with it is called –
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Which of the following waves require a medium to travel?
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A dielectric is pulled out of a charged capacitor (battery disconnected). The potential difference:
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