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A 2.5 mm -diameter sphere is charged to -4.6 nC . An electron fired directly at the sphere from far away comes to within 0.39 mm of the surface of the target before being reflected. Part A What was the electron's initial speed? Part B At what distance from the surface of the sphere is the electron's speed half of its initial value? Part C What is the acceleration of the electron at its turning point?
A cylinder of mass 6.6 kg and radius 0.10 m rolls along a level floor. Its center of mass has a speed of 0.8 m/s. Find the kinetic energy of rotation
A small metal sphere of mass 6.9 g and charge 5.9 μC is firedwith an initial speed of 4.9 m/s directly toward the center of asecond metal sphere carrying charge 7.2 μC. This second sphereis held fixed.
Suppose electrons in a TV tube are accelerated through a potential difference of 2.00 104 V from the heated cathode, At what speed would the electrons impact the phosphors on the screen
A parallel plate capacitor of capacitance C0 has plateof area A with separation d between them. When it isconnected to a battery of voltage V0 it has chargeof magnitude Q0 on its plates.
A 2.61e-6 F capacitor is charged to 1270 V and a 6.58e-6 F capacitor is charged to 420 V. what will be the potential difference across each
Upton Chuck is riding the Nitro at Six Flags Great Adventure. If Upton free falls for 2.55 seconds, what would be his final velocity and how far would he fall.
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of a single wavelength. Find the wavelength of light that falls on slits
Communications satellites are placed in orbits so that they always remain above the same point of the earth's surface. A) What must be the period of such a satellite? T= hr B) What is its angular velocity in rad/s?
The angular speed of an automobile engine isincreased at a constant rate from 1500rev/min to 2500 rev/min in13 s. How many revolutions does the engine make during this13 s interval
A 769-kg satellite is in circular orbit around the Earth and moving at a speed of 1.11 km/s. How much work must be done to move the satellite
A 1.5 m cylinder of radius 1.1 cm is made of a complicated mixture materials. Its resistivity depends on the distance x from the left and obeys the formula p(x)=a+bx^2, What is the resistance of the rod
a a 3 microcoulomb charge is at the coordinates 34 mm. a -4 microcoulomb charge is at the coordinates -25mm. what is
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