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The allowed energies of a simple atom are 0.00eV , 4.31eV ,and 6.60eV .
What wavelengths appear in the atom's absorption spectrum?
what is the ratio of the electric force holding an electron in an assumed circular orbit around a hydrogen nucleus
Two boxes are seen to accelerate at the same rate when a force Fis applied to the first box and 4F is applied to the secondbox. What is the mass ratio of the boxes?
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed. The radius of the orbit is 4.41 × 10-11 m. Determine the magnitude..
Object A is moving due east, while object B is moving due north. They collide and stick together in a completely inelastic collision. Momentum is conserved. Find the direction of the final velocity of the two-object system
The brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At what temperature will the gap be closed
A small boat is headed for a harbor 30 km directly northwest of its current position when it is suddenly engulfed in heavy fog. The captain maintains a compass bearing of northwest and a speed of 9.8 km/h relative to the water. The fog lifts 3.0 h..
Suppose you have a solution that contains 0.0490 M Ca2 and 0.0940 M Ag, When the second cation just starts to precipitate, what percentage of the first cation remains in solution
One mole of an ideal gas at 0?C is held at a constant volume of 98 liter. Find the change in pressure if the tempera- ture increases by 73 ?C
in a Tom's double-slit experiment using 549nm light, a thin piece of plexiglass of refractive index 1.53 covers one of the slits. what is the minimum thickness of the plexiglass
The speed of sound in Helium is 1010 m/s.Suppose you use a tuning fork with a frequency of 522 HZ. What would be the separation of the 2 maxima in a standing wave apparatus if the tube were filled with helium gas?
A shopper pushes a cart 44- m south down one aisle and then turns 90.0° west and moves 30 m. He then makes another 90° turn and moves 13 m.
The water supply of a building is fed through a main pipe 6.00 cm in diameter. A 3.00 cm diameter faucet tap, located 1.00 m above the main pipe, What is the speed at which the water leaves the faucet
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