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Use the Bohr theory formulas to determine
(a) determine the kinetic energy and
(b) determine the potential energy of an electron in the ground state of hydrogen. Give your answer in eV.
A system does 112 J of work on its environment and gains 72 J of heat in the process. What is the change in the internal energy of the environment
A uniform magnetic field is aligned with the axis of a solenoid having a radius of 0.25m. What is the induced emf in the coil
The plane of a single circular loop with radius 0.1 m is held so the area vector of the loop is facing the North direction. what is the induced EMF in the loop
A cardiac pacemaker can be affected by a static magneticfield as small as 1.7 mT. How close can a pacemaker wearer come toa long, straight wire carrying 18 A?
A ski starts from rest and slides down a 21degree incline 90 m long. Use energy methods. If the coefficient of friction is 0.09, find the ski's speed at the base of the incline
A 1432.0 g mass is on a horizontal surface with μk = 0.44, Calculate the distance the spring was compressed. What is the velocity of the mass as it loses contact with the spring
If the string is 9.5 long, has a mass of 30 and is pulled taut with a tension of 8.50, how much time does it take for a wave to travel from one end of string to the other?
Points A, B, and C are at the vertices of an equilateral triangle. A certain positive charge q placed at A produces anelectric field of magnitude 490 N/C at C.Suppose a second, identical charge is placed at B. What is themagnitude of the new electric..
the positron is a particle with the same mass as an electron but charge e. a positron in a bubble chamber moves
A duck is floating on a lake with30%of its volume beneath the water. What is the average density of the duck?
A magnetic field is oriented at an angle 42 degrees to the normal of a rectangular aread 5.5 cm by 6.8 cm. evaluate the strength of the magnetic field
A spring Oscillator is desgined with a mass of .568 kg. It opperates while immersed in a damping fluid,Find the required damping constant for the system
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