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A beam of ultraviolet radiation, with frequency of 2.710×1015 Hz is directed on a clean metal surface. The work function of the metal is 3.40 eV. Calculate the maximum kinetic energy for an electron dislodged from the surface by the radiation.
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.744 rev/s. find the initial and final kinetic energies for this system
A 0.1kg ball is attached to a string and whirled around in a circle overhead, What is the maximum speed the ball can have when the radius of corcle is 1m
Your goal in laboratory is to launch a ball of mass m straight up so that it reaches exactly height h above the top of the launching tube. Find an expression for the acceleration that will earn you maximum points
Two particles, with charges of q1 = 60.0nC and q2 = ?60.0nC, are placed at the points with coordinates, Find the electric potential energy of the configuration of the three fixed charges
Find out the total work done on the car by the external forces.
27 g of copper pellets are removed from a 300 C oven and immediately dropped into 120 mL of water at 21C in an insulated cup. What will the new water temperature be?
A light beam with wavelength 440. nm in a material then enters air and its wavelength becomes 577. nm. What is the index of refraction for the material
You have a string with a mass of 14.1 g. You stretch the string with a force of 8.63 N, giving it a length of 1.93 m. What is the wavelength of the standing wave you create in the string
Calculate the power required by an object to lift another object
For saving energy, bicycling and walking are far more efficient means of transportation than is travel by automobile. For example, when riding at 11.0 mi/h, Find the fuel economy in equivalent miles per gallon for a person walking
A rock of mass 43.00 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 252N. What is the magnitude of the acceleration of the rock.
Workers pushing a 180-kg trunk across a level floor encounter a 10-m long region where the floor becomes increasingly rough; the coefficient of kinetic friction enhancements.
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