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Suppose that the x rays are emitted from a focal spot isotropically. The photon flux is 3.28 x 106 photons mm-2 sec-1 at a distance of 0.75 m from the focal spot. What is the photon flux at a distance of 10 cm from the focal spot? Neglect the effects of air attenuation.
At a distance of 4,000 ft from the launch site, a spectator is observing a rocket being launched. If the rocket lifts off vertically and is rising at a speed of 600 ft/sec when it
In case of Young's double slit experiment if the yellow light is moved by red light then how the fringes are affected?
Can a contour map explain a cause and effect relationship among three variables?
#question-the measurement of 30.43 degrees north of east..
Who first theoretically predicted the existence of the positron, a positively charged electron? He received the Nobel Prize in Physics in 1933. Ans: (Paul Adrien M
different questions and their answers about elasticity
to derive expreation for magnitude & direction for the resultant which two are acting at a point
A hiker tosses a rock into a canyon. He hears it strike water 4.78 s later. How far down is the surface of the water?
INSTANTANEOUS VELOCITY: The velocity of a body at a certain instant of time is known as instantaneous velocity.
(i) X-rays are electromagnetic waves with wavelength lie among 0.1Å - 100Å. (ii) X-rays is invisible. (iii) They always go in a straight line with speed of light. (iv) X
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