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In a photoelectric-effect experiment, the maximum kinetic energy of electrons is 3.2eV . When the wavelength of the light is increased by 50% , the maximum energy decreases to 1.5eV.
What is the work function of the cathode?
What is the initial wavelength?
A certain metal with atomic mass (2.1 x 10^-25)kg has an interatomic bond with length (2.3 x 10^-10)m and stiffness 42 N/m
What is direction of the resultant velocity
Two uniform infinite sheets of electric charge densities 41.0 C/m2 and -41.0 C/m2 intersect at a right angle
A flywheel with radius 0.75 m has an initial angular velocity of 30 rad/s. What is the angular acceleration of the flywheel
the speed with which hair or fingernails grow. what is the average speed of growth? What units are most appropriate for describing this speed
High-speed photos of a 220 microg flea jumping vertically indicate that the jump lasts 1.2 ms, What is the flea's change in momentum during its jump
The drum of the photocopying machine in the problem above has a length of 48 cm and a diameter of 9 cm. What is the total charge on the drum
A standard 35mm slide measures 24mm by 36mm. Suppose aslide projector produces a 60cm by 90cm image of the slide on a screen. What is the distance between the slide and the screen
what is the horizontal distance x between the two balloons.
A train is en route from Chicago to New York at 110km/h when the engineer spots a cow on the track. How far was the train from the cow when the engineer first applied the brakes
a soil below the water table has a density of 120 lb/ft^3 and a void ratio of .82. determine the specific gravity of solids
A bullet is fired through a board 10.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board, Find the acceleration of the bullet as it passes through the board
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