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Suppose an electron with energy of 80 eV enters a region where there is a potential well of depth -20eV. Calculate its de Broglie wavelength (a) outside (b) inside the well.
A potter's wheel moves from rest to an angular speed of .20 rev/s. Find its angular acceleration in radians per second per second.
A H2 molecule can be approximated by a simple harmonic oscillator having spring constant k= 1.1 x 1033 N/m. Find the energy levels
A string under a tension of 49.0 N is used to whirl a rock in a horizontal circle of radius 2.40 m at a speed of 20.8 m/s on a frictionless surface, What is the breaking strength, in newtons, of the string
A lighted candle is placed 36 cm in front of a converging lens of focal length f1= 13 cm, calculate the position and relative size of the final image
The starship Enterprise on the television program Star Trek was powered by a matter-antimatter reactor. What is the total mass of matter and antimatter required, assuming a 100% efficient engine
A race vehicle accelerates uniformly as it leaves the pit area, going from rest to 320 km/h in a semicircular arc with a radius of 198 meter. Find the radial acceleration of the vehicle at this time
A particle moving along the x axis in simple harmonic motion starts from its equilibrium position, the origin, at t = 0 and moves to the right. Determine the maximum speed of the particle
A car (m = 1,100 kg) is traveling at an initial speed of 12 m/s. It then slows to a stop over a distance of 86 m due to a force from the brakes. How much work is done on the car
a researcher measures the concentration of advil in a patients bloodstream as a function of time making measurements
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer, What is the mass of the unknown element
A spherical water drop, 1.70 meter in diameter, is suspended in calm air owing to a downward-directed atmospheric electric field E = 502 N/C. Determine how many excess electrons does the drop have
the intensity of laser light of 620 nm wavelength incident on a solid surface with a work function of 0.5 ev is doubled. By what factor does the kinetic energy of the electrons increase
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