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A current of 0.97A flows through a copper wire 0.50mm in diameter when it is connected to a potential difference of 15 V. How long is the wire? Answer must be in km.
Two 10 cm-diameter charged disks face each other, 29cm apart. The left disk is charged to - 50 nC and the right disk is charged to + 50 nC . What is the electric field E, both magnitude and directi
A small object of mass 3.46 g and charge -18.4 oC is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. What are the magnitude and directio
A +35 µC charge is placed 60 cm from an identical +35 µC charge. How much work would be required to move a +0.72 µC test charge from a point midway between them to a point 7 cm clo
Two capacitors, C1 = 6.00 µF and C2 = 11.0 µF, are connected in parallel, and the resulting combination is connected to a 9.00-V battery. (a) Find the equivalent capacitance of the comb
(a) When a 21.00-V battery is connected to the plates of a capacitor, it stores a charge of 33.0 µC. What is the value of the capacitance? (b) If the same capacitor is connected to a 12.00-V
The space between the plates is then filled with a dielectric material, with a dielectric constant of 7.74. What must the magnitude of the charge on each capacitor plate now be, to produce the same
(a) What is the potential difference across the plates of the capacitor? V (b) What is the magnitude of the uniform electric field in the region between the plates?
A charge of -2.320 is located at (2.735 , 4.613 ), and a charge of 1.795 is located at (-2.649 , 0) There is one point on the line connecting these two charges where the potential is zero. Find thi
Please choose the combination of statements below that describes the situation when a plastic rod that is initially electrically neutral is rubbed with a piece of fur and the rod (and the fur) becom
A capacitor is consists of two short sections of parallel wires in air. One wire is found to be of the voltage of 40 V and the other -40. They carry equal and opposite charge of magnitude 70 pC. Wha
a thin conducting wire connects the spheres, redistributing the charge on each sphere. When the wire is removed the spheres still repel but with a force of F2 = 0.100 N.
(a) What is the potential difference across the plates of the capacitor? (b) What is the magnitude of the uniform electric field in the region between the plates?
An electron and a proton are fixed at a separation distance of 931 nm. Find the magnitude and direction of the electric field at their midpoint. Magnitude: And what is the direction of the electric
An electron is located on the x axis at x0 = -9.89 × 10-6 m. Find the magnitude and direction of the electric field at x = 3.45 × 10-6 m on the x axis due to this electron. Magnitude: Wha
As expected, the predictions of Coulomb\'s law are well confirmed. You find that the forces are? and that the magnitude of each force is?
The particle's speed is 130 m/s, the magnitude of the magnetic field is 0.52 T, and the radius of the path is 960 m. Determine the mass of the particle, given that its charge has a magnitude of 8.2
(a) According to Bob, how fast and in what direction is Carl moving relative to himself (Bob)? (b) According to Bob, how fast is Carl moving relative to Earth?
Calculate the distance r from the uranium atom necessary for an electron to reside in equilibrium. Ignore the insignificant gravitational attraction between the particles. What is the magnitude of t
what is buoyant force acting on the cylinder in case the cylinder is at rest on the bottom and the support wire is slack when it's resting on the bottom of the beaker, with no tension in the wire?
What is buoyant force acting on the cylinder in case the cylinder is at rest on the bottom and the support wire is slack when it's resting on the bottom of the beaker, with no tension in the wire?
If the distance between two charged particles is quadrupled, the magnitude of the electric force each exerts on the other is changed.
To be safe, the engineers making the ride want to be sure the normal force does not exceed 1.9 times each persons weight - and therefore adjust the frequency of revolution accordingly. What is the m
Two charges, and , are located at the origin and at (0.45, 0), respectively.Where on the x-axis must a third charge, of arbitrary sign be placed to be in electrostatic equilibrium if = +2.3 and = -7
What will be the equilibrium temperature when a 245 g block of lead at 300oC is placed in 150-g aluminum container containing 820 g of water at 12.0oC?