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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 965 kg car traveling initially with a speed of 25.3 m/s in an easterly direction crashes into the rear end of a(n) 9510 kg truck moving in the same direction at 16.8 m/s. What is the velocity of the truck immediately after the collision
Mutual induction can be used as the basis for a metal detector. A typical setup uses two large coils that are parallel to each other , find the new value of the induced emf
A yo-yo has a rotational inertia of 1180 g·cm2 and a mass of 148 g. Its axle radius is 3.58 mm, and its string is 139 cm long. The yo-yo rolls from rest down to the end of the string. What is the magnitude of its linear acceleration?
A satellites are placed in a circular orbit that is 3.64 × 107 m above the surface of the earth. What is the magnitude of the acceleration due to gravity at this distance
A point charge Q=+ 4.50uC is held fixed at the origin. A second point charge q=+ 1.30uC with mass of 2.10 x 10-4 kg is placed on the x-axis, 0.220m from the origin. What is its speed when its distance from the origin
A 0.5 kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of 5.0 N for a distance of 4.0 m. How much kinetic energy does the block gain
a neon atom m 20.0 u makes a perfectly elastic collision with another atom at rest. after the impact the neon atom
Sam pushes a 10.0-kg sack of bread flour on a frictionless horizontal surface with a constant horizontal force of 3.0 N starting from rest. What is the kinetic energy of the sack after Sam has pushed it a distance of 25 cm
A proton is initially at rest. After some time, a uniform electric field is turned on and the proton accelerates. The magnitude of the electric field is 1.36 105 N/C. What is the speed of the proton
A sphere of copper is subjected to 81.1 MPa of pressure. The copper has a bulk modulus of 130 GPa. By what fraction does the radius of the sphere change
A monatomic ideal gas expands slowly to twice its original volume doing 310 J of work in the process, Find the change in internal energy if process isobaric
A cube of aluminum 0.50 meter on a side is immersed one-fourth in water and three-fourths in glycerin. Determine the normal force on the cube in Newton
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