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Q. A 1200 car traveling at a speed of 14 skids to a halt on wet concrete where = 0.30. How long are the skid marks?

Q. An alpha particle (the nucleus of a helium atom formed by 2 protons and 2 neutrons with charge q = +2(1.6 x 10-19 C ) is moving perpendicular to a magnetic field of 0.790 tesla at a velocity of 4.60E+6 m/s ; calculate the magnitude of the magnetic force exerted on it.

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Category:- Physics
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