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Hubble's law (E.P. Hubble; 1925):
A relationship discovered among distance & radial velocity. Further away a galaxy is away from is, the quicker it is receding away from us. The constant of proportionality is Hubble constant, H0. The cause is interpreted such as the expansion of spacetime itself.
A car of mass 1600 kilograms (kg) was travelling at 30m/s when the brakes were applied and produced a constant retarding force of 8000 N (Newtons) to the car: Find - a) How far the
Two particles each have a mass of 6.7 x10 -5 kg. One has a charge of +5.0 x 10 -6 C, and the other has a charge of -5.0 x 10 -6 C. They are initially held at rest at a distance of
The threshold of hearing is 10 -12 watts/m 2 or 0 dB. How many times more intense than the threshold of hearing is 70dB and what is the actual intensity (in watts/m 2 ) at the 7
Power ratings of DC Circuit: Electrical equipment can only stand a certain amount of heat production without damage and the safe power which a piece of equipment can consume wi
find acceleration of spacecraft will changed during journey and velocity and displacement if formula for displacement " s " and velocity V S=ut +1/2 at.... (t to power 2) V= u+at
Will light go any length along the fiber? Each conductor has losses, and in the case of fiber optics, all these are sizeable. Light losses into the industry average 2 to 5 perc
How to make a simple pulley A reasonably satisfactory pulley can be complete from a wire clothes hanger and a cotton reel. Cut off both wires of the hanger at a distance of abo
A=2i+3j+k B=3i+2j+4k Find:1)A.B=? 2)A+B=?
A non uniform rod AB has a mass M and length 2L the mas per unit length of the rod is mx at a point of the rod distant x from A.find the moment of inertia of this rod about an axis
Radiography and depletion of Ozone layer: What is Radiography? A. The method in which soft X-rays are used in medical diagnosis is called radiography. What are the uses
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