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Platinum has a work function of 6.4 eV. Radiation with wavelength 150 nm and intensity 1.3 W/m2 is directed at a platinum surface. (a) Discover the maximum kinetic energy of the ejected electrons. (b) If 1.0% of the photons striking a1.0 cm2 area of platinum eject electrons, how many electrons are emitted per second from that part of the surface?
A light ray is traveling toward an interface between sapphire, n= 1.76, and water, n= 1.33. What is the critical angle for total internal reflection
A gasoline engine fuel burns at a temp of 500 degrees Celsius. Its radiator cools to 70 degrees celsius. What is the engines Carnot efficiency
A fisherman reels in 12 of line while landing a fish, using the constant forward pull of 35. How much work does the tension in the line do on fish.
the average person passes out at an acceleration of 7g that is seven times the gravitational acceleration on earth.
A rocket-powered hockey puck has a thrust of 4.0 N and a total mass of 1.0 kg. It is released fromrest on a frictionless table, 4.5 m from the edge of a 2.0 m drop. The front of the rocket is pointed directly toward the edge. How far does the puck la..
Three moles of an ideal monatomic gas are at a temperature of 377 K. compute the final temperature of the gas?
An airplane, whose air speed is 380 km/hr, is supposed to fly in a straight line 23.0 degrees north of due east. A steady 100 km/hr is blowing from the north. Illustrate in what direction should the plane head realative to the earth?
a fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. the
A turtle ambles leisurely-as turtles tend to do-when it moves from a location with position vector r1,x = 1.49 m and r1,y = -2.77 m in a lettuce garden to another location, with position vector r2,x = 3.77 m and r2,y = -4.19 m, where the lettuce a..
A 2.00-g charged particle is released from rest in a region that has a uniform electric field = (160 N/C), Determine the charge of the particle
A meterstick (L = 1 m) has a mass of m = 0.121 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark. What is the tension in the left string?
A 60.0-g object is attached to a horizontal spring with a force constant of 15.0 N/m, What is the velocity of the object
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