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Light with a wavelength of 435 nmilluminates a metal cathode. The maximum kinetic energy of the emitted electrons is 0. 71 eV. What is the longest wavelength of light that will cause electrons to be emitted from this cathode? (please show all work)
A string with both ends held fixed is vibrating in its third harmonic. Calculate the amplitude at point on the string a distance of 23 cm from the left-hand end of the string
Compute explicitly energy eigenvalues and eigenfunctions of the quantum two- dimensional harmonic oscillator described by the Hamiltonian operator associated with the classical Hamiltonian H =(1/2m)((Px)^2+(Py)^2)+(k/2)(x^2+y^2)
A hoop and a cylinder of the same mass and outer radius are rolled up an incline plane with the same speed. Which goes farther up the incline plane? Explain
A race car goes around a level, circular track with a diameter of 1.00 km at a constant speed of 77 km/h. What is the car's centripetal acceleration in m/s2
Suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactly eight months, as measured by a clock on board the spacecraft, and then return home at the same speed.
A certain part of an aircraft engine has avolume of 1.6 ft3. Find the weight of the piece when it is made of iron
An aquarium contains a 5-cm layer of water (n = 1.333) floating on top of carbon tetrachloride (n = 1.461). If an angle of incidence into water from the carbon tetrachloride is 20, what is the angle of refraction into the air.
A solid conducting sphere of radius 2.00 cm has a charge 13.00 µC. Find the electric field at r = 1.00 cm from the center of this charge configuration
An electron has a total energy of 5.0mev and a kinetic energy of 4.5 mev. What is the electron's momentum
A pacific north west home has a solar photovoltaic (PV) systemthat produces 10.45 MWh of usable electricity peryear. Their PV system is tied to the electrical grid, and all theenergy it produces is credited against their energy homeconsumption.
A kid fires a squirt gun horizontally from 1.3mabove the ground. It hits another kid 1.9m away square in the back, 0.96m above the ground. What was the water's initial speed
A motercycle has a mass or 2.50*102 kg. a constantforce is excerted on it for 60.0s. What is the change in momentum
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