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A ceiling fan is rotating at 0.90 rev/s . When turned off, it slows uniformly to a stop in 2.5 minute.
Part A Find how many revolutions does fan make in this time?
Part B Using the result from part A, obtain the number of revolutions the fan must make for its speed to decrease from 0.90 rev/s to 0.45 rev/s.
In a particular beta-minus decay of a free neutron (that is, one not part of an atomic nucleus), the emitted electron has exactly the same kinetic energy as the emitted electron antineutrino. What is the value, in MeV, of that kinetic energy? Assume ..
A 110kg linebacker tackles an 85kg halfback. immediately before the collision the linebacker is slipping with a velocity of 8.8 m/s north and the halfback is sliding with a velocity of 7.2m/s east.
Estimate the volume of water in the world's oceans in cu km, assuming a mean depth of water of 4 km. How deep would the water be were it stored entirely as ice on the continents?
A uniform electric field exists in the region between two oppositely charged plane parallel plates. Find the speed of the electron when it strikes the second plate
A 12.5 cm tall soft drink can has a mass of 17.0 g and contains 364 g of soda when full. Where is its center of mass when half full
two particles, each with mass m = 0.95 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 5.8 cm and mass M = 1.4 kg. what is the combination's kinetic energy
You can hear beats when two tuning forks are sounded together. The tuning forks have labels showing them to be 242 Hz and 248 Hz frequencies
a 5.2cm -thick layer of oil n1.46 is sandwiched between a 1.5cm -thick sheet of glass and a 2.3cm -thick sheet of
What is the longest wavelength of light that may be absorbed by a hydrogen atom that starts in the second excited state
A thin spherical shell made of plastic carries a uniformly distributed negative charge -7e-10 coulombs (indicated as -Q1 in the diagram). Two large thin disks made of glass carry uniformly distributed positive and negative charges 1.7e-05 coulombs..
a plastic rod has been bent into a circle of radius r 6.30 cm. it has a charge q1 5.00 pc uniformly distributed along
A hiker, who weighs 670 N, is strolling during the woods and crosses a small horizontal bridge. The bridge is uniform, weighs4860 N, and rests on two concrete supports, one on each end. He stops 1/3 of the way along the bridge. What is the magnitude ..
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