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An electron is trapped in an infinite 1-D potential well of width 10.0 nm and is its ground state. Find the longest wavelength, of the light that can excite the electron from its ground state via single-photon excitiation.
A block of weight 43.6 N is hanging from a rope. The tension from the rope is pulling upward on the block. The block is accelerating upward at a rate of 1.22 m/s^2. What is the magnitude of the tension in the rope?
In an electroplating process, it is desired to deposit 40mg of silver on a metal part by using a current of 2.0A. How long must the current be allowed to run to deposit this much silver?
An insect subtends an angle of only 3.4 x 10-3 rad at the unaided eye when located at the near point. Obtain the angular size when the insect is viewed through a microscope whose angular magnification has a magnitude of 110
How much work does Bob do on the rock and How much force, assumed to be constant, does Bob apply to the rock
A spherical mass on a rod of length L rotates rigidly about a fixed axis at the opposite end of the rod. What is the sphere's linear displacement
A diver has a vertical velocity of -12 m/s when she is 1.8 m above the water. What was her peak height
What is the magnitude of the acceleration of a speck of clay on theedge of a potter's wheel turning at 42 rpm(revolutions per minute) if the wheel's diameter is 35 cm
A baseball is hit at Fenway Park in Boston at a point 0.626 m above home plate with an initial velocity of 31.00 m/s directed 50.0° above the horizontal. find the vertical distance by which the ball clears the wall
a steel piano string is 49.6 inches long. the diameter of the string 0.0421 inches. when struck this string produces
A football is punted straight up into the air; it hits the ground 5.2 s later. With what speed did it leave the kicker's foot
The total charge Q is placed on a conductingshell. In the cavity of the conductor, you have a charge q. What is the charge on the outer surface of the conducting shell
A channel and a plate are welded together as shown to form a section that is symmetrical with respect to the y axis. Determine the moments of inertia of the combined section with respect to its centroidal x and y axes. Hint: look online for propertie..
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