Saturday, December 27, 2014

Some Amazing Facts Collection

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*********{Some Amazing Facts Collection}********** ======================================================================= 1.If an atom were the size of a stadium, its electrons would be as small as bees 2.Laser is an abbreviation of Light Amplification by Stimulated Emission of Radiation. 3.At 25, Physicist Lawrence Bragg is the youngest person...

Thursday, December 25, 2014

Numerical problem

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A particle is constrained to move in a circle with a 10-meter radius. At one instant,the particle’s speed is 10 meters per second and is increasing at a rate of 10 meters per second squared. Find the angle between the particle’s velocity and acceleration vectors. Solution: There are two perpendicular components of acceleration. 1) at along the...

Monday, December 22, 2014

Classical Mechanics

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An astronomer observes a very small moon orbiting a planet and measures the moon’s minimum and maximum distances from the planet’s center and the moon’s maximum orbital speed. Which of the following CANNOT be calculated from these measurements? A. Mass of the moon B....