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Assume you are underwater, wearing Polaroid sunglasses. Looking upward toward the water surface, you view the setting sun by seeing light rays from the sun that strikes the water at an angle of incidence of 45 degree. The intensity of the incident sunlight is 200 W/m2. Determine the intensity of the light you see?
Speakers A and B are vibrating in phase. They are directly facing each other, are 8.0 m apart, and are each playing a 76.0-Hz tone. The speed of sound is 343 m/s. On the line between the speakers there are three points where constructive interfere..
70 grams of water at 85°C are mixed with an equal amount of water at 15°C in a completely insulated container. How much heat is gained by the cold water
If you were to design an electric heater using Nichrome wire as the heating element, determine what parameters of the wire could you vary to meet a particular power output such as 1000Watt
X-rays with a wavelength of 0.0350 nm undergo Compton scattering from a carbon target. Find the magnitude of the momentum of a scattered electron
suppose you want to detemine the electrical field in a certain region of space. you have a small object of known charge
Compute what resolving power is needed to measure with a spectrograph the natural line width of the alpha particles from Po-212
Assume that the protons in a hot ball of protons each have akinetic energy equal to kT, what is the least separation anytwo protons can have
a river flows due east at 1.50 ms. a boat crosses the river from the south shore to the north shore by maintaining a
A spaceship of mass 2.20×106kg is cruising at a speed of 4.20×106m/s when the antimatter reactor fails, blowing the ship into three pieces
On the moon the surface temperature ranges from 397 K during the day to 92.0 K at night. What are these temperatures on the Fahrenheit scale
Each of the three helicopter rotor blades shown in the figure is 5.20 m long and has a mass of 286 kg. The rotor is rotating at 250 rev/min. What is the total kinetic energy of rotation
A certain diatomic molecule vibrates with a characteristic frequency v= 2.45x10^9s^-1 (these are microwaves). Calculate the relative population of the ground state
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