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A glass vial filled with mercury vapor (4.88 eV between ground state and first excited state), is placed between the cathode and anode of a photoelectric effect apparatus. Assume that the glass is so thin that it will not reduce the energy of photoelectrons as they pass through the glass. Due to the presence of the mercury gas, there will now be a sharp drop in the stopping potential for certain energies of incident photons. Calculate the two longest wavelengths of the incident photons that will experience this sharp drop. The target metal of the photoelectric effect apparatus has a work function of 2.05 eV.
Consider a pendulum suspended at some location on the Earth. The length of the pendulum can be taken to be much shorter than the radius of the Earth. Approximate the Earth as a sphere. Find an equation for the angle, alpha, that the pendulum make..
What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 21 km/h
A constant force is applied to an object, causing the object to accelerate at 6.0 m/s^2? What will the acceleration be if the force is doubled
A generator connected to an RLC circuit has an rms voltage of 120V and an rms current of 34mA. what is the inductive reactance of the circuit
Green light at 543 nm is diffracted by a grating with 3000 lines per cm. Through what angle is the light diffracted in the first order
Four identical metallic objects carry the following charges: +1.79, +6.21, -4.16, and -9.41C. The objects are brought simultaneously into contact, What is the final charge on each object
A bullet is shot into a block of ice at 0 degrees Celsius. It comes to rest and melts .005 kg of ice. What was the Kinetic Energy of the bullet
The work function of a certain metal is 3.00 eV. What is the kinetic energy of a photoelectric in both "J" and "eV" for an incident photon of wavelength 400.0 nm
What is the horizontal component of velocity
A 6-mu or micro F capacitor is charged to 120 V and is then connected across a 700-ohm resistor. What is the initial charge on the capacitor
The owner of a van installs a rear-window lens that has a focal length of -0.310 m. When the owner looks out through the lens at an object located directly behind the van, How far from the van is the object actually located
A certain transformer has 500 turns on the primary. If 10 volts are applied to the primary, what was the current in the primary
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