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A tube of mercury with resistivity 9.84 x 10-7Ω*m has a 25 N/C electric field inside thecolumn of mercury. How much current is flowing, if the diameter ofthe tube is 1.0 mm?
In a dentist's office, an X-ray of a tooth is taken using X-rays that have a frequency of 8.07 multiply.gif 1018 Hz
two semicircular rods one with a 100.0 mm radius r1 and the other with a 180.0 mm radius r2 have a common center of
A small, rigid object carries positive and negative 3.00-nC charges. It is oriented so that the positive charge has coordinates (?1.20 mm, 1.00 mm) and the negative charge is at the point (1.50 mm, ?1.30 mm).
An electron is accelerated through 2450 V from rest and then enters a region wherethere is a uniform 1.80 T magneticfield. What are the maximum and minimum magnitudes of the magentic force acting on this electron?
what is the minimum height you would have to place a solid ball of mass m and radius r i 2mr2 5 on a hill in order
The current in a coil changes from 3.10 A to 1.90 A in the same direction in 0.530 s. what is the inductance of the coil
Monochromatic light falls on a slit that is 2.60*10-3 mm wide. If the angle between the first darkfringes on either side of the central maximum is 35.0degrees(dark fringe to dark fringe), what is the wavelength of the light used
In 1910 Rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil. He unexpectedly observed a few of the particles scattered almost directly backward.
calculate the final velocity of the baseball a tennis ball 57 g is rolling at a velocity of 5 ms north. it collides
A fighter jet is launched from an aircraft carrier with the aid ofits own engines and a steam-powered catapult. The thrust of itsengines is 2.00 105 N. What is the work doneon the jet by the catapult
question an object is 13 cm in front of a diverging lens with a focal length of 15 cm. use ray tracing to determine the
a uniform electric field of magnitude 7.5times105 nc points in the positive x direction.find the change in electric
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