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Question 1: A 1.0-mW laser with a 405-nm wavelength illuminate a sodium target. If 1 in 105 incident photons generate photoelectrons, what is the photocurrent?
Question 2: In an experiment to measure Planck's constant, a metal target is illuminated with ultraviolet light. When the wavelength is 300nm, the measured stopping potential is 1.10 V. When the wavelength is changed to 200 nm, the stopping potential becomes 3.06 V.
(a) what value does this experiment yield for Planck's constants? What is the percent error for the accepted value of h?
(b) Using the experimental value of h, find the threshold frequency and work function for this metal.
Unpolarized light is incident on a stack of two polarizing sheets. At what angle should the transmission axes of all polarizer be oriented (by respect to each other) so that only 1/3 of the incident intensity is transmitted?
Assuming that all the heat generated by the resistor is absorbed by the solid substance, and that it takes 4 minutes to raise the temperature from 20to 80 degrees C, compute the specific heat for the substance.
A catcher stops a ball traveling at 28.0 m/s in a distance of 55.30 cm and feels a force of 313 N against his glove. What is the mass of the ball.
Find the moment of inertia of a solid uniform sphere of radius R which has a spherical cavity of radius R/2. The spherical cavity is centered at a point R/2 from the center of the sphere. Take the axis of rotation to go through the center of the sphe..
A skier is gliding along at 3.6 m/s on horizontal, frictionless snow. He suddenly starts down a 10 degree incline. His speed at the bottom is 17 m/s. What is the length of the incline
The Relativistic Heavy Ion Collider (RHIC) at Brookhaven is colliding fully ionized gold (Au) nulcei accelerated to an energy of 200 GeV per nucleon, What is the speed of each Au nucleus just before collision
An object 3.4 mm tall is placed 25cm from the vertex of of a convex spherical mirror. how far is the image from the vertex of the mirror
a 3.00-m long rod is hinged at one end. THe rod is initially held in the hozizontal position, what is the angular acceleration as it is released
A single current carrying loop has a magnetic dipole moment of 10i - 20j + 15k Am2 and is in a region of space, Find the potential energy of the loop
The space shuttle is in a 250 mile high orbit. what are the shuttle's orbital period and speed
Obler's paradox presented the contrary facts that the universe had to be infinite and uniform in order to be stable and if the universe was infinite the night sky should be as bright the surface of the stars. How was the paradox resolved?
A transformer has 400 primary turns and 1510 secondary turns. The input voltage is 120 V and the output current is 16.0 A. Assume 100 percent efficiency. What is the output voltage
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