How many more times louder is 70 decibels than 10 decibels?
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A rope-dancer holds wither an umbrella or a bamboo stick, while dancing on the rope. Why
Draw a graph between frequency of photon and velocity of photo electron?
In Einstein's mass energy relation E=mc2 why velocity of light is used and never ordinary velocities?what is the exact explanation?
How can you conform that magnetic lines come from a single bar magnet with out any external instruments?
the hardest substance available on earth
How will you make the clock go fast ?
What is Metals ?
What is Vaporization ?
What is black body ?
What is non metals ?
Explain what is density?
How magnetic materials are classified?