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At first, the periodic table placed the elements in order of increasing atomic mass. What property is now used instead of atomic mass? What are the shapes of the three allotropes of carbon?
Two electrons in the same atomhave n = 3 and script i = 1. How many quantum numbers are there for the possible states of the atom? How many states would be possible if the exclusion principle did not apply to the atom?
A charge of -3.9 micro-coulombs is launched from the positive plate of a large capacitor to the negative plate.
What was the bullet's flight time. A marble is thrown horizontally with a speed of 11 m/s from the top of a building. When it strikes the ground, the marble has a speed that makes an angle 38° with the horizontal. From what height above the ground..
A flat go-kart track consists of two straight ways 100 m long with semicircular ends which have a radius of 25.0 m. Determine the magnitude of the total acceleration of the go-kart at the beginning and end of the curve
A certain species of ionized atoms produces an emission line spectrum according to the Bohr model, but the number of protons Z in the nucleus is unknown. Obtain the next-to-the-longest wavelength in the series of lines
on a sphere with radius a there is an electric charche sigmasigmazerocostheta. determine the electrostatic potential
A transformer has 330 primary turns and 1340 secondary turns. The input voltage is 120 V and the output current is 15.0 A. What are the output voltage and input current
In the Bohr model of the hydrogen atom, an electron (mass m=9.1×10^?31kg) orbits a proton at a distance of 5.3×10^?11m. How many revolutions per second does the electron make
The normal cash price for this type of equipment is $125,000 while the cost to Perry was $105,000. For the year ended December 31, 2011, illustrate by what amount will Perry's pretax earnings increase from this lease?
Sketch a free body diagram for each block, identify all forces acting on the block. Caclulate the acceleration of the blocks. Calculate the tension in the rope.
Over a year's time, a person receives a biologically equivalent dose of 24 mrem (millirems) from cosmic rays, What is the person's absorbed dose in rads
A basketball player makes a jump shot. The 0.592 kg ball is released at a height of 2.18 m above the floor with a speed of 7.17 m/s. What is the work done on the ball by air resistance
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