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Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed. The radius of the orbit is 4.20 x 10-11 m. Determine the magnitude of the electron's centripetal acceleration.
A capacitor of 12µF is charged by a 30 V battery. Afterwards, the capacitor is disconnected from the battery and connected to an inductor with L = 2H. What is the initial charge on the capacitor
Two balls with a net charge of - 4.0 ?C and + 10.0 ?C are separated by 2 cm. What is the electrostatic force on the positive charge
Suppose that a standing wave on the flagpole gives rise to a sound wave of the same frequency. A person would be able to hear the sound produced by the above standing wave, What is the lowest flagpole harmonic the mouse can hear
A galvanometer with a full scale sensitivity of 500 muA and a coil resistance of 54 Omh, What is the required shunt resistance
A tennis player receives a shot with the ball (0.0600 kg)traveling horizontally at 50.0 m/s andreturns the shot with the ball traveling horizontally at38.0 m/s in the opposite direction. What is the impulse delivered to the ballby the racquet
how does reflection refraction and diffraction affect the behavior of
At what distance along the central axis of a uniformly chargedplastic disk of radius R = 1.40 m is themagnitude of the electric field equal to 1/9 times the magnitude ofthe field at the center of the surface of the disk?
A plane flies at 1.25 times the speed of sound. The sonic boom reaches a man on the ground exactly 1 min after the plane passed directly overhead. What is the altitude of the plane
a 0.230-a current is charging a capacitor that has circular plates 10.9 cm in radius. the plate separation is 4.00 mm.a
A 1 KW motor accelerates centrifuge in 1 minute from rest to speed 1000 rmp. Find moment of inertia of the centrifuge
Three resistors are connected to a in series with a 19 V ideal battery, What is the current coming out of the battery
An airplane pilot sets a compass course due west and maintains an airspeed of 213km/h. Find the magnitude of the wind velocity
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