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A current of 0.105 mA flows in a silver wire whose cross-sectional area is 0.930 mm2. (The resistivity of silver is 1.62 10-8 ? m, and the density of silver is 10.49 g/cm3.)
(a) Find the density of electrons in the wire, assuming that there is one conduction electron per silver atom.
(b) Find the current density in the wire assuming that the current is uniform.
(c) Find the electron's drift speed.
A gymnast of mass 56.0 {rm kg} hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value 9.81 {rm m/s^2} for the acceleration of gravity.
A water pipe having a 2.2 cm inside diameter carries water into the basement of a house at a speed of 0.85 m/s, What is the water pressure at the second floor
An elevator cable breaks when a 975 kg elevator is 24.5 m above the top of a huge spring (k = 8.00 x 10^4 N/m) at the bottom of the shaft. Calculate the speed of the elevator just before striking the spring
A gas, while expanding under isobaric conditions, does 494 J of work. The pressure of the gas is 1.57E+5 Pa, What is the final volume of the gas
The terminals of a generator are connected to inductors. Inductor 1 is equal to 30.0 mH and the second inductor has a value of 60.0 mH. What is the value of the third inductor
A block of mass 0.379 kg is placed on the end of a spring which has a stiffness of 216 N/m. It is pulled down 4.40 cm and released. What is the period of oscillation
q1. a 1500 w hair dryer is operated on a 160 v circuit for 5 minutes every day. if electricity costs 0.15kwha what is
Suppose a projectile is to be fired from the floor onto a table 1.1 meters high that stands 92 centimeters from the point at which it is fired
A circuit consists on an emf of 48 V, a resistor with R = 8.0 ohms, an inductor with L = 2.0 H, and a switch, all connected in series. At this instant, what is the current in the resistor
My clothes washer spins the wash at a speed of 833rev/min to remove the water. The drum is 21.5 inches in diameter. What is the acceleration of the clothes at the drum
A 6 kg bowling ball with a radius of 12 cm rolls in a straight line past you at a speed of 3 m/s. What are the components of the ball's total angular momentum about your position
An 8.5- {rm kg} point mass and a 15- {rm kg} point mass are held in place 50- {rm cm} apart. A particle of mass m is released from a point between the two masses 19- {rm cm} from the 8.5-{rm kg} mass along the line connecting two fixed masses.
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