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1. A sodium surface is illuminated with 300 nm wavelength light. If the stopping potential is found to be 1.68 V, determine the work function of sodium and cutoff frequency.
2. Electrons accelerated by an electric potential different of 12.75 V are incident on a collection of hydrogen atoms which were at their ground states initially. Upon this interaction, the hydrogen atoms are excited. Determine the possible wavelengths of the light emitted from the excited hydrogens atoms.
3. A 0.100 MeV photon propagating along the positive x-axis collides with a free electron initially at rest on the axis. After the collision, the electron is scattered along the positive x-axis. Determine the scattering angle of the scattered photon with respect to the positive x-axis, the energy of the scattered photon and the kinetic energy of the scattered electron.
4. Consider a particle of mass m moving in a one-dimensional box which has the two walls at x= -l and x = +2l, respectively. The potential energy of the particle in the box is zero. Sketch the wave function and probability density for the particle at the second excited state (n = 3) and determine the probability of finding the particle in between x = 0 and x = +2l. Determine the energy of the particle at the excited state.
A block of mass 50 kg is free to slide on a horizontal frictionless surface. A constant force F acting 20° above the horizontal is applied to the block. What is the magnitude of the applied force F
A particle (charge 4.0 ?C) is released from rest at a point on the x- axis, x = 5.0 cm. What is the kinetic energy of the particle at the instant
Three resistors are connected in series across a battery, What is the greatest voltage that the battery can have without one of the resistors burning up
An Argon ion laser has a gain bandwidth of 2 GHz. Find the number of standing wave cavity modes within the gain bandwidth of the argon ion laser
The planet Neptune has a satellite, Proteus, which travels in an orbit 1.180*10^8 m with a period of 1.12 days. Calculate the mass of Neptune from this information
A stone is dropped at t = 0. A second stone, with 2 times the mass of the first, is dropped from same point at t = 190 ms. (a) How far below the release point is the center of mass of two stones at t = 390 ms? (Neither stone has yet reached the gr..
One fine spring afternoon, you go outside to play a rousing game of hoop-and-stick. If your hoop rolls without slipping, what is the angular speed of the hoop
The drawing shows a person (weight W = 581 N, L1 = 0.852 m, L2 = 0.402 m) doing push-ups. Find the normal force exerted by the floor on each hand and each foot
A canoe has a velocity of 0.54m/s southeast relative to the earth. The canoe is on a river that is flowing at 0.52m/s east relative to earth.
The electric field everywhere on the surface of a charged sphere of radius 0.470 m has a magnitude of 865 N/C, find distribution of charge inside the sphere
What value does this give for the speed of sound in air. What is the speed of the ball at that point.
Suppose a large conducting slab is polarized (one side is positive and the other is negative) What is the electric field force (E) inside the slab
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