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The work function of tungsten is 4.50 eV. Calculate the speed of the fastest electrons ejected from a tungsten surface when light whose photon energy is 6.75 eV shines on the surface.
A 0.7 kg block of ice is sliding by you on a very slippery floor at 3.5m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.003 seconds.
At T = 0ºC and p = 1000mb, 1g of dry air receives during an isochoric process anamount of heat, what is the amount of heat absorbed
It is said that Galileo discovered a basic principle of the pendulum - that the period is independent of the amplitude, How long is the lamp chain?
Consider the mass spectrometer shown schematically in the figure below. The electric field between the plates of the velocity selector is 5400 V/m, Calculate the radius of the path for a singly charged ion having a mass m = 3.29 10-26 kg
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the orbital period of the faster planet, in years
A proton exeriences a magnetic field B= 1.9 X 10^-4i^ T and electric field E = 3.2 j^ N/C, what is the net force on the proton
Speedboat A negotiates a curve whose radius is 150m. Speedboat B negotiates the curve whose radius is 190m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
A playground merry-go-round of radius R = 1.40 m has a moment of inertia I = 255 kg · m2 and is rotating at 9.0 rev/min about a frictionless vertical axle. What is the new angular speed of the merry-go-round
As a logging truck rounds a bend in the road, some logs come loose and begin to roll without slipping down the mountainside. What is the friction force on the rolling logs
question1three point charges are in order on a line. charge 3 5.00 nc and is at the origin. charge 2 -2.50 nc and is
question1what pairs of forces act in the following situations?a. a pitcher throws a baseball.b. a batter hits a
q. a group of swimmers is resting in the sun on an off-shore raft. they estimate that 4.8 m separates a trough and an
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