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An electron confined in a one- dimensional box is observed, at different times, to have energies of 12eV, 27eV, and 48eV. What is the minimal length of the box?
The gravitational force between two electrons that are 0.97 m apart is 5.76 multiplied by 10-71 N. Find out the mass of an electron. (Use G = 6.67 10-11 N · m2/kg2.)
Light from an argon laser strikes a diffraction grating that has 5365 grooves per centimeter. The central and first-order principal maxima are separated by 0.488 m on a wall 1.7 m from the grating. Determine the wavelength of the laser light. nm
A 2.0 cm × 2.0 cm parallel-plate capacitor with a 2.0 mm spacing is charged to ±1.0 nC. What is each particle's speed as it reaches the plate
a styrofoam ball of mass 0.120 g is placed in an electric field of 6000 nc pointing downward. what charge must be
A plate carries a charge of -2.62μC, while a rod carries a charge of +2.04μC. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge.
Two automobiles, each of mass 1.500*10^3 kg, travel in the same direction along a straight road. find the translational kinetic energy of the center of mass
Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.0 mm. Conductor B is a hollow tube of outside diameter 4.1 mm and inside diameter 3.1 mm. What is the resistance ratio RA/RB , measured b..
red light from three separate sources passes through a diffraction grating with 5.50times105 linesm. the wavelengths of
Consider an infinite solenoid of radius R, n turns per unit length, and current I. Calculate the final cinetic moment of each of the cylinders
Determine the rate at which the electric field changes between the round plates of a capacitor, 5.6 cm in diameter
A circular-motion addict ofmass 85 kg rides aFerris wheel around in a vertical circle of radius 10 m at aconstant speed of 5.9 m/s. What is the period of the motion?
A proton travels with a speed of 3.00 ? 106 m/s at an angle of 55.0° with the direction of a magnetic field of 0.520 T in the +y direction. determine the magnitude of the magnetic force on the proton
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