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A light source of wavelength λ illuminates a metal and ejects photoelectrons with a max KE of 1.00eV, A second light source with half the wavelength of the first ejects photoelectrons with a max KE of 4.00eV. Find what is the work function of the metal?
What is the formula for finding tension. The problem is there are 3 objects, M1=M2=M3, all of them are connected by rope. How much tension is on the rope in between M1 and M2
The original Ferris wheel, built by George Ferris, had a radius of 38 m and a mass of 1.9 X 106 kg. What force exerted on the rim of the wheel would have given such a torque
A 1.00 kg glider on a horizontal air track is pulled by a string at an angle θ. The taut string runs over a pulley and is attached to a hanging object of mass 0.500 kg .
Calculate the speed of a proton that is accelerated from rest through a potential difference of 134V. Calculate the speed of an electron that is accelerated through the same potential difference.
A red laser pointer with a wavelength of 635 nm is shined on a double slit producing a diffraction pattern on a screen that is 1.75 m behind the double slit. The central maximum of the diffraction pattern has a width of 4.30 cm, and the fourth bright..
A 101 g ball is tied to a string. It is pulled to an angle of 5.20 degrees and released to swing as a pendulum. How long is the string
Two circular disks spaced 0.50 mm apart form a parallel-plate capacitor. What are the diameters of the disks
A block of ice starts from rest on an apartment building's roof, which slopes at 41° below the horizontal. How far from the building does the block strike the ground
You are driving a car at the 25-mi/h speed limit when you observethe light at the intersection 70 m infront of you turn yellow. How fast were you going as you exited the inter section
In one of the rocks brought back from the Moon, it is found that70.7 percent of the initial potassium-40 in the rock has decayed to argon-40. determine how old is the rock
An astronaut travels to the nearest start system. 10 light years away, and returns at a speed of 0.5c. How much has the astronaut aged relative to those people remaining on Earth?
What angle does the rope make with the horizontal.
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