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A helium-neon laser of the type often found in physicslaboratories has a beam power of 7.00 mW at a wavelength of 633 nm.The beam is focused by a lens to a circular spot whose effectivediameter may be taken to be equal to 2.00 wavelengths.
Calculate the intensity of the focused beam.
Calculate the radiation pressure exerted on a tiny perfectlyabsorbing sphere whose diameter is that of the focal spot.
Calculate the force exerted on this sphere.
Calculate the magnitude of the acceleration impartedto it. Assume a sphere density of 4.50×103kg/m3.
A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.64s, What is the mass of the grapes
If the coefficient of friction between the block and the floor is 0.40, what is the mass of the block.
two identical 21.6-kg spheres of radius 14 cm are 29.8 cm apart center-to-center distance.a if they are released from
An object of mass m1 = 4.00 kg is tied to an object of mass m2 = 3.90 kg with String 1 of length = 0.500 m. What is the tension in String 1 at this instant
define what is the unknown capacitance. what focal length eyepiece should she use.
a 75 kg man jumps from an airplane. when his parachute deploys it exerts a 500 n force on the man at an angle of 30
An Earth satellite moves in a circular orbit 665 km above the Earth's surface. The period of the motion is 97.8 min. What is the magnitude of the centripetal acceleration of the satellite
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The function y(x, t) = (25.0 cm) cos(?x - 26?t), with x in meters and t in seconds, describes a wave on a taut string. What is the transverse speed for a point on the string at an instant
a. find the frequency in terahertz of visible light with a wavelength of 481 nm in vacuum.b. what is the wavelength in
suppose the original experiment is done on the Moon, where g, the acceleration due to gravity, is about one-sixth of g on Earth. If the magnet is dropped from height H, how will the graph compare to the original graph
a 1.0-m radius flywheel is to be made from steel in the form of a solid disc. if the flywheel when turning at 60 rpm
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