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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.
two particles of masses m1 93000 kg and m2 4200 kg are initially at rest an a distance 148.1 km apart. the masses are
determine the density of an unknown gas used to fill a 2.0g balloon to a volume of 4.0l if the balloon floats at
A hydrogen atom is in its first excited state (n = 2). Using the Bohr theory of the atom, calculate (a) the radius of the orbit, (b) the linear momentum of the electron.
a listener at rest with respect to the air and the ground hears a signal of frequency f r from a source moving toward
A spherical surface completely surrounds a collection of charges. Find the electric flux (with its sign) through the surface if the collection consists of (a) a single +1.90 × 10-6 C charge, (b) a single -2.40 × 10-6 C charge, and (c) both of the ..
A 20.0g ball of clay traveling east at 8.00m/scollides and sticks together with a 20.0g ball of clay traveling north at 8.00m/s. What is the speed of the resulting ball of clay
A freezer is used to freeze 3.0 Lof water completely into ice. The water and the freezer remain at aconstant temperature of T = 0°C. Determine the change in the entropy of the water
Starting with the equation E=mc^2, determine the ratio of MeV per AMU. For initial values, use 1 AMU = 1.66x10^-27 kg and c = 3.00x10^8 m/sec.
A bicycle wheel has a diameter of 63.9 centimeter and a mass of 1.87 kilogram. Obtain what force must be applied by a chain passing over a 9.10 cm diameter sprocket if the wheel is to attain an acceleration of 4.48 rad/s2
how long would a 2.90 kw space heater have to run to put into a kitchen the same amount of heat as a refrigerator
in a game of pool the cue ball strikes another ball of the same mass and initially at rest. after the collision the cue
It is used to push a 0.50 kilogram block 50 centimeter along a horizontal frictionless track then up theta=30o incline which has a kinetic friction coefficient of 0.10. Compute how high above the track does the block rise
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