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1) The AMANDA 677 photon multiplier tubes embedded within the polar ice sheet to depths of over 2km. These tubes use the photoelectric effect to detect light. The metallic light-receiving surface within each tube is sensitive to light of wavelengths shorter than 605 x 10^2nm. The corresponding photon energy represents the minimum energy to eject a photoelectron. What is the minimum photon energy in electron volts? State the kinetic energy of the photoelectron.
describe the importance of rare earth elements in science and technology. assess the most common uses of these
A portable DVD player is operated by rechargeable batteries. The batteries are recharged by a unit that plugs into a wall socket. What voltage is used to drive the DVD player
Light from a laser strikes a diffraction grating that has 4250 grooves per centimeter. Find the wavelength of the laser
An infinite plane current sheet coincides with the xy plane. The surface current density is K'=K' y-hat where K'=const, Find the force per unit length on the wire
A motorist drives north for 35 minutes at 85 km/h and then stops for 15.0 minutes. He then continues north, traveling an additional 130 km in 2 h.
A small glider is placed against acompressed spring at the bottom of an air track that slopes upwardat an angle of 33.0 degrees above the horizontal. The glider has mass 7.00×10−2 kg. The spring has600 N/m and negligible mass.
Which container must the restaurant choose - how long does it take each container to lower the coffee temperature from 200 degrees fahrenheit to 130 degrees fahrenheit?
find the magnetic field strength in gauss for a current of 3.7 a in the helmholtz coils with 145 turn assuming a coil
A spherical raindrop of mass 0.0112 g and radius 1.39 mm falls from a cloud that is at a height of 1195 m above the ground. What is the raindrop's terminal speed
A baseball player hits a triple and ends up on third base. A baseball "diamond" is a square, What is the magnitude of his displacement
two strings are vibrating at the same frequency of 150 hz. after the tension in one of the strings is decreased an
question1the period of a simple pendulum defined as time necessary for one complete oscillation is measured in time
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