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Question: A telescope can be used to enlarge the diameter of a laser beam and limit diffraction spreading. The laser beam is sent through the telescope in opposite the normal direction and can then be projected onto a satellite or the Moon. If this is done with the Mount Wilson telescope, producing a 2.57-m diameter beam of 524-nm light,
Question 1: What is the minimum angular spread of the beam?
Please show how you obtained the answer.
a block of mass m1.665kg is floating stationary in a beaker of water. a string connected to the bottom of the beaker
When a beam of white light is incident (vertically) on a thin oil slick (n = 1.25) floating on water, What is the thickness of the oil slick
a pipeline is assembled in horizontal cylindrical blocks 10 m long and 1.2 m in diameter. inside one block the distance
What must the charge (sign and magnitude) of a particle of mass 1.42g be for it to remain stationary when placed in a downward-directed electric field of magnitude 610N/C ? Use 9.81m/s^2 for the magnitude
one component of a magnetic field has a magnitude of 0.0262 t and points along the x axis while the other component has
A certain string just breaks while it is under 25 N of tension. A boy uses this string to whirl a 0.75-kg stone in a horizontal circle of radius 2.00 m. The boy continuously increases the speed of the stone. At about what speed will the string bre..
Two resistance less rails rest 22cm apart on a 5.0?ramp. They are joined at the bottom by a 0.75 ohm resistor. What is the terminal (steady) velocity of the bar as it slides frictionless down the rails
Two rubber bands cause an object to accelerate with acceleration a. How many rubber bands are needed to cause an object with half the mass to accelerate five times as quickly
How much heat in kcal must be added to 0.68 kg of water atroom temperature ( 20 C) to raise its temperature to 39 C? A quantity of steam ( 450 g) at 115 C is condensed, and theresulting water is frozen into ice at 0 C. How much heat was removed?
Find where is the near point of an eye for which a contact lens with a power of +2.90 diopters is prescribed
a transverse wave is traveling on a string. the displacement y of a particle from its equilibrium position is given by
A proton has a velocity of v ?= (2.00x10^7 m/s)i ? when it encounters a magnetic field B ?= (0.0200T)j ?. What is the radius of the circular path the proton
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