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A hydrogen atom in a state having a binding energy (the energy necessary to remove an electron) of 0.378 eV makes a transition to a state by an excitation energy (the difference among the energy of the state and that of the ground state) of 13.056 eV. What is the energy of the photon emitted as a result of the transition?
conducting sphere x is initially uncharged. conducting sphere y has twice the diameter of sphere x and initially has
A block of mass m1 = 6.67 kg on a frictionless plane inclined at angle ? = 33.6° is connected by a cord over a massless, What is the acceleration of the hanging block
An orbiting satellite stays over a certain spot on the equator of (rotating) Earth. What is the altitude (in km) of the orbit (called a geosynchronous orbit)?
A point charge with charge q1 = 2.00?C is held stationary at the origin, How much work W is done by the electric force on the moving point charge
it takes 2.5uj of work to move a 16nc charge from point a to b. it takes -5.5 uj of work to move the charge from c to
A 9.05 kg projectile is fired vertically upward. Air drag decreases the mechanical energy of the projectile-Earth system by 77.5 kJ throughout the projectile's ascent. How much higher would the projectile have gone were air drag negligible.
The surface of the drum of a laser printer is negatively charged, except in certain "print black" regions, such as letterforms, thathave been discharged by a laser beam. Negatively charged inkparticles carrying a charge of 5.0 mC cling to the "pri..
A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. What is the pressure at the narrow end of the segment
A uniform chain with a mass of 1.23 kg per meter of length is coiled on a table. One end is pulled upward at a constant rate of 0.523 m/s. Calculate the net force acting on the chain
What is the total charge of the thorium nucleus? (The neutral thorium atom has 90 electrons.), What is the magnitude of the force on an electron at that distance
A wall clock has a minute hand with a length of 0.55 m and an hour hand with a length of 0.26 m. Take the center of the clock as the origin, and use a Cartesian coordinate system with the positive x axis pointing to 3 o'clock and the positive y ax..
We have a hollow metallic sphere with charge -5.0 µC and radius 5.0 cm. What charge now rests on the outer surface of the sphere
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