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Two 4.2 cm X 4.2cm metal plates are separated by a 0.19mm thick piece of Teflon. What is the capacitance? What is the maximum potential difference between the disks?
What friction torque is necessary to reduce its angular speed from 90.0 {rm rpm} to 45.0 {rm rpm} in a time interval of 32.0 {rm s}.
A capacitor has parallel plates of area 12cm^2separated by 2.5 mm. The space between the plates is filled with polystyrene (K=2.6,Em=2.0*10^7 V/m). Find the permittivity of polystyrene
It is fairly easy to strip the two electrons off a helium atom, leaving a bare nucleus of two neutrons and two protons. What is the necessary voltage difference
An object that hangs form the ceiling of a staionary elevator by an ideal spring scilliates with a period T. If the elevator accelerates upward 2g , what will the period of oscillation of the object ?
A very long, straight solenoid with a cross-sectional area of 6.00cm2 is wound with 40.0 turns of wire per centimeter, What is the average induced emf in the secondary coil
Suppose that an electron trapped in a one-dimensional infinite well of width 322 pm is excited from its first excited state to the state with n = 5. What energy (in eV) must be transferred to the electron for this quantum jump
What is the average speed in m/s of nitrous oxide molecule when the temp is 300K? The molar mass of oxygen is 0.032 kg/mol
Air that initially occupies 0.144 m3 at a gauge pressure of +70 kPa is expanded isothermally to atmospheric pressure, Compute the work done by the air
By doing a nuclear diffraction experiement, you measure the de Broglie wavelength of a proton to be 9.16 fm. (a) What is the speed of the proton? (b) Through what potential difference must it be accelerated to achieve that speed?
A car of mass 961 kg coasts on a level road, starting with an initial speed of 14.6 m/s and coming to rest 15.4 s later. Find the frictional force acting on the car
Sodium ions (Na+) move at 0.855 m/s through a bloodstream in the arm of a person standing near a large magnet. what would be the magnetic force on the arm
A sealed tank containing seawater to a height of 11.1 also contains air above the water at a gauge pressure of 2.95. Water flows out from the bottom through a small hole.
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