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A laser emits 1.42*1018 photons per second in a beam of light that has a diameter of 1.88 mm and a wavelength of 519.0 nm. Decide each of the following for the electromagnetic wave that constitutes the beam.
a) The average electric field strength
b) The average magnetic field strength
A 36-kg skier coasts up a snow-covered hill thats makes anangle of 25o with the horizontal. what is the magnitude of the kinetic frictional force
An ideal gas expands at a constant total pressure of 2.5 atm from 3.45 L to 6.70 L. calculate the total work done by the gas in the process
A heat engine working between 340.0oC and 630.0oC, takes in 8.277×106 J of heat and delivers 2.100×106 J of work per cycle. What is the maximum possible efficiency of an engine
Use the equation of the position to find the potential elastic energy in a Simple Harmonic Motion(SHM). What would you need to do to find the elastic constant of a spring
A pair of speakers separated by 0.700m are driven by the same oscillator at a frequency of 658 Hz. An observer, originally positioned at oneof the speakers, begins to walk along a line perpendicular to theline joining the speakers.
a proton traveling from a far distance with a velocity of 5 x 105 ms and is headed directly at a nitrogen 14 nucleus.
A container holds a gas consisting of 1.05 moles of oxygenmolecules. One in a million of these molecules has lost a singleelectron. What is the net charge of the gas
A motorcycle has a constant speed of 28.1 m/s as it passes over the top of a hill whose radius of curvature is 130 m. Find the magnitude of the centripetal force
A curve of radius 50 m is banked for the design speed of 100 km/h. If the coefficient of static friction is 0.60 (wet pavement), at what range of speeds can a car safely create the curve.
A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 586 N. As the drawingshows, she is closer to the left cliff than to the right cliff,with the result that the tensions in the left and right sid..
A 20.0kg light signal hangs from the end of a 7.0m uniform density pole of mass 12.0kg. The pole is free to swivel from the hinge at point A, What is the reaction force (magnitude and direction) at the hinge
Illustrate what was its angular acceleration (assumed constant) and what was its final angular speed in rpm?
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