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you are taking a photograph of a poster on the wall of your dorm room so you cant back away any farther than 20m to
work function of potassium is 2225 eva find the cutoff wave length of potassiumb if the maximum energy of teh
a turbin operates adiabatically and at steady state with an ideal gas of constant cp as the working fluid the inlet
a series lr circuit with l 20 mh and r 20 k is connected to a potential source of amplitude 50 v and angular
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one of the problems of in-air testing of nuclear weapons or even worse the use of such weapons is the danger of
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the critical angle for total internal reflection at a liquid-air interface is 400a if a ray of light traveling in the
one of the problems of in-air testing of nuclear weapons or even worse theuseof such weapons is the danger of
two narrow slits 55 micrometer apart are illuminated with light of wavelength 507nm a what is the angle of the m2
a double-slit interference pattern is created by two narrow slits spaced 021mm apart the distance between the first and
a light board 10 m long is supported by two sawhorses one at one edge of the board and a second at the midpoint a 40-n
a 220 f capacitor is charged by a 1550 v power supply then disconnected from the power and connected in series with a
a plum is located at coordinates -966 m 0 267 m in unit-vector notation what is the torque about the origin on the plum
a 1 mw laser produces photons of wavelength 633 nm how many photons per second does the laser
the power capacity of all nuclear power plants in the united states is 101 times 105 mw in one hour what is the total
in a double-slit experiment slits separated by 1290e-4 m are illuminated by a coherent 571 nm light source what is the
if a reflected ray in the air at an angle of reflection of 60 degrees is totally polarized what is the index of
a large refracting telescope has an objective lens with focal length 085 ma you use an eyepiece with focal length 0022
a beam of light crosses the interface between two media with an angle of incidence of 340deg and an angle of refraction
a point source of light is at the bottom of a koi pond at a depth of 0525 meters what is the radius of the circle of
a lens of focal length 1500 mm is used to project an image of the sun if the sun subtends an angle of 50 what is the
a radioactive isotope has an activity of 839 mci after 330 hours the activity is 671 mci what is the half-life of the
the mean lifetime of muons in their rest frame is 220 s now consider a muon traveling through the earths atmosphere at
stefans law describes the relationship between solar black body radiative output and black body temperaturebased upon