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It takes 105 J of work to move2.1C of charge from a positive plate to anegative plate. What voltage difference exists between the plates?
The electric potential at a position located a distance of 21.0 mm from a positive point charge of 6.90×10-9C and 16.9 mm from a second point charge is 1.30 kV
A 1.0-cm-diameter microscope objective has a focal length of 2.8mm. What is the resolving power of the objective if it is used in an oil-immersion microscope with noil= 1.45
A 22.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rpm. What centripetal force must she exert to stay on if she is 1.25 m from its center
When a certain air-filled parallel-plate capacitor is connected across a battery, it acquires a charge (on each plate) of200 µC. While the battery connection is maintained, a dielectric slab is inserted into and fills the region between the plates..
Laser light of wavelength 635 nm is incident upon two narrow slits separated by .14 mm. On a screen 4.1 m beyond the slits, how far apart are the interference fringes
If an astronomical telescope has the magnification of -32.0 ? and its objective lens has a focal length of 77 cm, what is the focal length of its eyepiece
The heating element of a clothes dryer has a resistance of12.7 Ohms. A voltage of 240 V is connected across the heatingelement. What is the current in the heating element?
A 10-m plank is being moved by rolling it over two cylindrical logs placed 2 m from either end of the plank. How far can the plank be moved before the rear log reaches the end of the plank
The captain of a ship grabs hold of the wheel with one hand a distance of 0.285m from the axis of rotation to adjust the rudder. what is the magnitude of the torque
A parallel plate capacitor has a separation between its plates of 1.0 mm. There is a dielectric with a dielectric constant of 2.1 fi ling the gap. what is the area of one of the capacitor plates
An electric dipole consists of charges +2e and-2e separated by 0.78 nm. It is in an electric field ofstrength 2.90*106 N/C. Calculate the magnitude of the torque on the dipole when the dipole moment has the following orientations.
A particular satellite was placed in a circular orbit about 155 mi above Earth, Determine the time required for one complete revolution
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