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A Sodium surface, which has a work function ? of 2.46 eV is illuminated with ? = 300nm light.
a) Find the kinetic energy of the ejected photoelectrons.
b) Find the maximum speed of the photoelectrons. c) What is the deBroglie wavelength of these electrons?
c) Find the threshold frequency for Sodium.
A railroad flatcar is traveling to the right at a speed of 13.0 m/s relative to an observer standing on the ground. What is the velocity of the motor scooter relative to the flatcar if its velocity relative to the observer on the ground is zero
This caused Goodly to borrow to meet its obligations, resulting in a drop in its stock price. Are the directors liable? Explain why or explain why not?
A parallel-plate capacitor has plate area 2.5×10?3m2 and plate spacing 3.0×10?2m, Find the stored charge and energy when this capacitor is connected across a 60V battery
Imagine that a hypothetical life form is discovered on our moon and transported to Earth. calculate the heat lost by each body from the vaporization of sweat
Four 6.50 kg spheres are located at the corners of a square of side 0.68 m. Calculate the magnitude and direction of the total gravitational force exerted on one sphere by the other three.
When you jog, most of the food energy you burn above your basal metabolic rate (BMR) ends up as internal energy, Determine the amount of water you lose to evaporation when running for 31 minutes at a rate that uses 400 kcal/h above your BMR
A satellite circles the earth in an orbit whose radius is 3.26 times the earth's radius. What is the period of the satellite
The police at the scene of the accident observed that the point of impact is 120 m from the base of the cliff. Explain how fast was the car traveling when it went over the cliff?
A block (mass = 1.8 kg) is hanging from a massless cord that is wrapped around a pulley (moment of inertia = 1.2 x 10-3 kg·m2), find the angular acceleration of the pulley
Collision of 2 trains and stopping distances, Two trains are driving towards each other .One at 144 km/h and the other at 72 km/h When they see each other they start to brake at 1 m/s2. There is 950m between them.
A 1245-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1955-N crate hangs from the far end of the beam.
Discover the tensions in the rope
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