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In a certain region of space, the electric field is E = 6.00 103 x2i, where E is in newtons per coulomb and x is in meters. Electric charges in this region are at rest and remain at rest. (a) Find the volume density of electric charge at x = 0.300 m. Suggestion: Apply Gausss law to a box between x = 0.300 m and x = 0.300 m + dx. (b) Could this region of space be inside a conductor?

Look up (presumably online, or by dismantling an old device and making measurements) the magnitude of the potential deflection plates (and the space between them) in an ink jet printer. Then look up the speed with which the ink comes out the nozzle. Can you calculate the typical mass of an ink drop?

Two thin conducting plates, each 25.0 cm on a side, are situated parallel to one another and 5.0 mm apart. If electrons are moved from one plate to the other, what is the electric field between the plates?

An electron and a proton, each starting from rest, are accelerated by the same uniform electric field of 200 N/C. Determine the distance and time for each particle to acquire a kinetic energy of 3.21016 J.

On a typical clear day, the atmospheric electric field points downward and has a magnitude of approximately 100 N/C. Compare the gravitational and electric forces on a small dust particle of mass 2.01015 g that carries a single electron charge. What is the acceleration (both magnitude and direction) of the dust particle?

Check Your Understanding If the electric field in Example 6.4 is E=mxk . what is the through the rectangular area?

a7> figure shows cylindrical conductor of radii a uniformly di'stributed urrent (a) show tHhat cross-section of hollow a and b, carrying Por the range B(r)= No I 2T (a-b) Wind

50 If E = 2 180 (Um) conducting sphre centered the totel chonge the surface of at the origin, wot is at 10-cm Q on the sphere 's surdoce ? CS CamScanner ile tarandı