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The ground-state wavefuntion of a hydrogen atom is Y=(1/((pi)a^3))^(1/2)*e^(-r/a) where a=bohr radius. a) calculate probability that the electron will be found within a small sphere of radius 1pm on the nucleus. b) no what if the sphere is at r=a. What is the probability that the electron is inside it? (assume the volume element is so small that Y soes not vary within it (ie it can be treated like a constant))
A block of mass 3.0 kg moves along a frictionless track which has a dip 0.7 m below the original level of the track and then a plateau 1.0 m above the original level of the track. What is the velocity at the hight point
A large electromagnet coil is connected to a 121 Hz ac source. The coil has a resistance 410 ohms , and at this source frequency the coil has an inductive reactance 260 ohms. What must the rms voltage of the source be
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. How many revolutions per minute is the sample making
What is the moment of inertia of the disk for rotation about an axis through the edge of the disk
A 547-kg satellite is in a circular orbit about Earth at a height above Earth equal to Earth's mean radius. Find the gravitational force acting on it
A bungee cord is stretched between two poles with a force of 382 N. The length of the cord is 36 meters and it has a mass of 3 kg. What is the velocity of a wave on this bungee cord
In an aluminum pot, 0.15 kg of water at 100 degrees c boils away in four minutes. find the temperature at the aluminum-steel interface
During an action potential, Na+ ions move into the cell at a rate of about 3×10^?7mol/m2?s. How much power must be produced by the "active Na+ pumping" system
A house has a floor area of 186 m2 and an outside wall that has an area of 46.5 m2. The earth's magnetic field here has a horizontal component of 2.56E-5 T that points due north and a vertical component of 4.14E-5 T that points straight down, towa..
A heavy piece of hanging sculpture is suspended by a 90 cm-long, 5.0 g steel wire, What is the mass of the sculpture
A cubical Gaussian surface surrounds charges, q1=6.0 x 10-12C, What is the electric flux passing through the surface
The work fuction of a particular substance is 7.81*10^-19 J. What is the photoelectric cutoff wavelength for this material
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