Explain what are wave fronts?
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Why dies a cyclist and the cycle fall forward, if he applies the brakes suddenly ?
What is master oscillator?
Explain the Types of Refrigeration ?
How is the index of refraction computed?
which electronic devices used at low frequencies? and high frequencies?and microwave frequencies?
Which is heavier the land mass or the sea?
Why does a heavy stone nor break a glass place when place slowly on it, while a small stone falling from a great height easily breaks it ?
Explain what is optical medium?
what is the safest day to have sex with a girl???
Why does heated air expand?
How much does two pints of water weigh when frozen?
Explain what is free fall acceleration?