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The figure below shows a resistor of resistance R =6.33 Ω connected to an ideal battery of emf = 14.0 V by means of two copper wires. Each wire has length23.3 cm and radius 4.10 mm. In dealing with such circuits in this chapter, we generally neglect the potential differences along the wires and the transfer of energy to thermal energy in them. Check the validity of this neglect for the circuit of the figure below.What is the potential difference across (a) the resistor and (b) each of the two sections of wire? At what rate is energy lost to thermal energy in(c) the resistor and (d) eachsection of wire?
A puck (mass m1 = 1.30 kg) slides on a frictionless table as shown in the figure below. The puck is tied to a string that runs through a hole in the table and is attached to a mass m2 = 3.9 kg. What is the change in the kinetic energy of the puck
One possible means of achieving space flight is to place a perfectly reflecting aluminized sheet into Earth 's orbit and to use the light from the Sun to push this solar sail, What force is exerted on the sail
During an all-night cram session, a student heats up a one-half liter (0.50E-3 m^3) glass (Pyrex) beaker of cold coffee. How much coffee (in cubic meters) has spilled out of the beaker
A baseball pitcher throws a baseball horizontally at a linear speed of 42.5 m/s (about 95 mi/h). find the tangential speed of a point on the "equator" of the baseball
During an electrostatic field experiment, you assume that the electric field lines are in the plane of the paper, What condition determines the accuracy of this assumption
A 2.25×10^4 elevator is to be accelerated upward by connecting it to a counterweight using a light (but strong!) cable passing over a solid uniform disk-shaped pulley. There is no appreciable friction at the axle of the pulley, other than its mass..
A small remote-control car with a mass of 1.59 kg moves at a constant speed of v = 12.0 m/s in a vertical circle inside a hollow metal cylinder that has a radius of 5 m.
A train accelerates at 1.93 m/s2 from rest to a steady speed in 72.61. It maintains that speed for 20.25 miles, What is the total distance traveled
An oak barrel with a lid of area 0.20 m2 is filled with water.A long, thin tube of cross-sectional area 5.0 X 10-5 m2 is insertedinto a hole at the center of the lid, What was the weight of the water in the tube
a metal sphere of radius 80. mm is charged to a potential of -0.50 kv. with what velocity must an electron be fired
A 560N force is pulling a 105.0kg crate across a horizontal floor. The force acts at an angle of 34.0o above the floor. find the work done by the pulling force
A 52.0 skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 2.90. What speed does he need at the bottom.
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