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Question: Calculate the velocity (in ms-1) of photoelectrons ejected from a sodium metal surface, which has a work function of 2.30eV, by ultraviolet light of wavelength 254nm. The electrons mass is 9.109 x 10-31 kg.
Item 4 To start her lawn mower, Julie pulls on a cord that is wrapped around a pulley. The pulley has a moment of inertia about its central axis of I = 0.660Kg(metersquared) and a radius of 6.00cm . There is an equivalent frictional torque impedin..
Compare the gravitational lens to the one found in a telescope.
You are at the controls of a particle accelerator, sending a beam of 3.00×107 protons (mass ) at a gas target of an unknown element. Find the mass of one nucleus of the unknown element
The width of the contact of each wire with your skin is 1.10 cm and the thickness of the conducting layer of your skin is 0.023 mm, calculate the resistivity of your skin
A block of wood has a density of 0.55g/cm^3 and mass of 2,500 g. it floats in a container of oil (the oil%u2019s density is 0.85 g/cm^3). What volume of oil does the wood displace
A 10 kg crate (begins 3m off the ground) slides along a smooth horizontal frictionless surface at a constant speed of 4 m/s. What is the kinetic energy as it slides on the upper surface
A muon with rest energy 106 MeV is created at an altitude of 4600 m and travels downward toward Earth's surface. What is the muon's total energy in the Earth observer's frame of reference
A roller coaster at the Six Flags Great America amusement park in Gurnee, Illinois, incorporates some clever design technology, What is the radius of the arc of the teardrop at the top
What is the length of the greatest and thinnest string that can be located under a tension of 860 without breaking .
The tires on a mew car have a diameter of 2ft and are warranted for60 000 miles. determine the angle (in radians)through which one of these tires will rotate during the warranty period.
Phil is standing on a third floor balcony, 10m above the ground. Where does the ball hit the ground
Astronauts use a centrifuge to simulate the acceleration of a rocket launch, What is the astronaut's tangential acceleration during the first 20.0s
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