Explain one advantage of a scanning electron microscope over a transmission electron microscope?
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What are isotopes?
The lowest frequency that determines the pitch of a musical note is most commonly called the?
Explain the cause of brownian motion?
Why are morning and evening less warm than noons ?
What is neutral buoyancy?
Which of the surfaces of a thermos flask are silvered and why?
A rope-dancer holds wither an umbrella or a bamboo stick, while dancing on the rope. Why
Explain about Magnetic mines
Why are the steam pipes and hot water pipes used for heating rooms, not fixed to the walls firmly at both ends ?
Explain what is relation between magnetic and electricity and why?
Explain how do fireworks turn into shapes like hearts and stars?
Which is the sound wave that is below the human hearing?