Explain radio telescopes?
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Explain the Laws of Thermodynamics ?
What is ultrasonic sound?
Why are the steam pipes and hot water pipes used for heating rooms, not fixed to the walls firmly at both ends ?
which one of the following does a tv remote control unit used to operate a tv ? a)light waves b) sound waves c) micro waves d) radio waves
Explain the Gravitation and gravity ?
What is centigrade thermometer ?
What is the weight of automotive oil?
How do fireworks turn into shapes like hearts and stars?
Explain how do you separate hydrogen and oxygen gases in industrial electrolysis of water process?
How will you make the clock go fast ?
What cycle most directly describes the working cycle of a heat engine operating as an ideal engine of maximum thermal efficiency?
Why so coloured clothes sometimes fade in sunlight ?