Why do you not collapse under the pressure created by the atmosphere?
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Why does a tea kettle sing?
Define Fixation of Nitrogen?
Suppose a car is traveling at 72kmph, and if that car slows down to 60kmph it takes an extra 1 hour to cover that same distance. At 72kmph, how long did it take forthe car to cover that distance?
Explain one advantage of a scanning electron microscope over a transmission electron microscope?
why we use Transistor?
How is sound produced?
What is frequncy?
When an object moves with constant velocity does its average velocity during any time interval differ from its instantaneous velocity at any instant?
Explain how many more times louder is 70 decibels than 10 decibels?
At what temperature does the filament of electric bulb glows ?
Explain what is a positron?
In Einstein's mass energy relation E=mc2 why velocity of light is used and never ordinary velocities?what is the exact explanation?