light, Physics

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Determine traveling of a ball, A ball falling vertically from rest for 3 se...

A ball falling vertically from rest for 3 seconds travels very nearly: a) 14.7 meters b) 29.4 meters c) 44.1 meters d) 88.2 meters Ans: A ball falling ve

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Intensities of an ordinary light and laser light The intensity (I) of a wave is the energy per unit time flowing through a unit normal area. The light from an ordinary light so

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Friction, what is the force of friction on a 5 kg box slides on a horizonta...

what is the force of friction on a 5 kg box slides on a horizontal plane when its speed decreases 1.5ms-1 in a second?

Determine the mmf essential to establish a flux, (a) A cast steel ring has ...

(a) A cast steel ring has a cross-sectional area of 600mm 2 and a radius of 25mm. Verify the mmf essential to establish a flux of 0.8mWb in the ring. Use the B-H curve for cast st

Briefly explain brewsters law, Briefly explain Brewster's law? Show that at...

Briefly explain Brewster's law? Show that at the polarizing angle of incidence the reflected and transmitted light becomes perpendicular to each other.

State the faraday laws of electromagnetic induction, a.  State the Faraday'...

a.  State the Faraday's laws of electromagnetic induction. b.  A conducting circular loop is placed in an uniform magnetic field B=0.020 T with its plane perpendicular to the fi

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Positive rays are sometimes called as the canal waves. These were found by Goldstein. If the cathode of a discharged tube has holes in it and the pressure of the gas is around 10-3

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