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When a radar gun says the pitch is 90 miles per hour at what point in the balls travel to home plate is the radar gun measuring the velocity?
The measurement is made at the point where the ball is when the trigger is squeezed and the contacts close to make active the unit. The gun responds in a "split second" by sending out a pulse, catching the return, and then comparing the two to discover the dissimilarity (the Doppler shift). It is so fast that the ball doesn't travel very far in the time it takes the unit to respond and resolve the speed.
Q. A truck loaded with sand accelerates along a highway. If the driving force stays the same on the truck, what happens to the truck's acceleration if its trailer leaks sand at a
how Michelson interferometer can be used to measure the wavelength of sodium light.
how is the image formed on the retina?
a wave of eqn y=0.005sin(8x-3t).find displacement when x=0.3 t=20s?in the answer given y=0.005sin(80*3-0.3*20)= y=0.005sin(-36+12pi).what is this 12pi?
Right hand Rule: James clark Maxwell proposed a rule to search the direction of magnetic lines of force around a wire carrying current. This rule states. "If a current carr
like parallel forsces
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Yes it is possible at the centre of the earth where the radius is zero .
describe the construction and working of michelson''s interferometer explain the formation of circular fringes how will you use these fringis in the determination of difference in
what is the equation for work
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