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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.
A 1200 kg car pushes a 2200 kg truck that has a dead battery . When the driver stes on he accelerator, What is the magnitude of the force of the car on the truck
a show that the fourier transform of a antihermitian function is imaginary with no symmetry.b show that the fourier
a mass m1 4.3 kg rests on a frictionless table and connected by a massless string to another mass m2 4.7 kg. a force
Tarzan swings on a 30.0-m-long vine initially inclined at an angle of 30.0° with the vertical. What is his speed at the bottom of the swing if he starts from rest
What is the terminal speed at which the bar falls.
A mass m2 = 1.8 kg, on a 39.4° incline, is connected to a mass m1 = 5.2 kg, on a horizontal surface. find the magnitude of the tension in the connecting cord
A cardinal (Richmondena cardinalis) of mass 3.80×10-2 kg and a baseball of mass 0.146 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude p_c of momentum to magnitude p_b of the baseball's momentum.
A solar cell generates a potential difference of 0.95 V when a 380 ? external resistance is connected across it, What is the internal resistance of the solar cell
A small cube, s=0.25m, sits on a surface where a uniform electric field of 250.0 N/C is directed downward at a 35.00 angle to the horizontal, Find the flux through either of the two sides for which flux is maximum
A father racing his son has three-fifths the kinetic energy of the son, who has one-third the mass of the father. What is the original speed of the father
A train 450 m long is moving on a straight track with a speed of 82.1 km/h. determine how long the train blocked the crossing
A spring with spring constant k=30 is compressed a distance of0.2 meters and shoots a 0.1kg block across a frictionless surfaceand up a ramp. To what height does the block rise before it slidesback down the ramp?
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