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A cylinder-shaped carbon resistor is 8 em in length and its circular cross section has a diameter d = 1 mm. a) Determine the resistance R. b) To reduce its resistance by 40%, the carbon resistor coated with a layer of copper of thickness t. Use the resu of Problem 4.44 to determine t.
Suppose that when a 12.0-V battery drives a current of 6.7 A through a resistive device, How much is the internal resistance (in ohms) of the 12.0-V battery
a loaded penguin sled weighing 90 n rests on a plane inclined at 20deg to the horizontal. between the sled and the
The springs of a 1400 kg car compress 4.0 mm when its 68 kg driver gets into the driver's seat. If the car goes over a bump, what will be the frequency of vibrations
A wedge of mass M and angle α is resting on africtionless horizontal plane. A rectangular box of mass m is onthe wedge. determine the accelerations of the two bodies
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.20×10^6N , one at an angle 17.0 degrees west of north, What is the total work done by the two tugboats on the supertanker
two wooden blocks each of 0.50 kg mass are connected by a string that passes over a very light frictionless pulley. one
A particle executes linear harmonic motion in one dimension with a frequency of 0.25 Hz about the point x=0. Determine an equation of motion for this oscillator
The sketch at the left shows a square loop of wire. Its resistance is 5 O. Its dimensions are shown: a = 4.0 em, b = 5.0 em. The nearby wire carries a current of 10.0 A. This current is increasing at the rate 120 A/s. What is the current in the lo..
The membrane that surrounds a certain type of living cell has a surface area of 5.00 10-9 m2 and a thickness of 1 10-8 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 5.
A 24-V battery is connected in series with a resistor and an inductor, Find the energy stored in the inductor when the current reaches its maximum value
A particle of mass m is acted on by a conservative force scalar potential is Ax^2/2 with A>0 constant. (a) Write the Lagrange for the system, drive the equations of motion using Lagrange's equation, and name all conserved quantities.
A source emits sound wavesof frequency 200 Hz, which move through still air at 340 m/s. Find the frequency heard by the listener
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