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A farsighted man has a contact lens prescription of +2.8 diopters, enabling him to see items in focus when they are no closer to his eyes than 28 cm. What is his near point when he is not wearing the contact lenses?
X rays with a wavelength of 0.14nm undergo first-order diffraction from a crystal at a 73 degree angle of incidence. What is the angle of second-order diffraction
A photon having E = 15.2 keV energy scatters from a free electron inside a metal. What is the maximum energy the electron can gain from the photon, At which angle will the electron scatter
One type of slingshot can be made from a length of rope and a leather pocket for holding the stone. The stone can be thrown by whirling it rapidly in a horizontal circle and releasing it at the right moment. Such a slingshot is used to throw a sto..
Suppose you wish to whirl a pail full of water in a vertical circle without spilling any of its contents. what minimum speed is required
Treating a lightning bolt as a long, thin wire, calculate the magnitude of the magnetic field produced by such a bolt of lightning at a distance of 71 m.
you are hanging with your hands on a horizontal conducting wire that is immersed over a distance of 1m in a horizontal
The escape velocity of a bullet from the surface of planet Y is 1823 m/s. Calculate the escape velocity from the surface of the planet X if the mass of planet X is 1.47 times that of Y,
The current in an RL circuit builds up to one-third ofits steady state value in 5.80 s. Find the inductive time constant
104.05 J of energy are transferred to a system in the form of heat while the internal energy decreases by 57.65 J. How much work is done by the system
a uranium and iron atom reside a distance r 44.90 nm apart. the uranium atom is singly ionized the iron atom is doubly
During a tennis match, a player serves the ball at a speeds, with the center of the ball leaving the racquet atangle θ below the horizontal at a heighty0. The net is a distance d away andhas a height h. When the ball is directly over the net,what ..
a student finds the following values from a graph between m and x in the static method of determining the spring
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