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A nervous physicist worries that the two metal shelves of his wood frame bookcase might obtain a high voltage difference if charged by static electricity, perhaps produced by friction.
Part (a) What is the capacitance of the empty shelves if they have area 0.7 × 103 cm2 and are 0.16 m apart in F?
Part (b) What is the potential difference between them if opposite charges of magnitude 2.00 nC are placed on them in V?
Part (c) To show that this voltage poses a small hazard, calculate the energy stored in J.
A canoe has a velocity of 0.37m/s southeast relative to the earth. The canoe is on a river that is flowing 0.47m/s, Find the magnitude of the velocity of the canoe relative to the river
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of single wavelength. It then falls on two slits separated by 0.410 . In resulting interference pattern on a screen 2.10 away, adjacent bri..
A diver observes a bubble of air rising from the bottom of a lake to the surface, What is the ratio of the volume of the bubble as it reaches the surface to its volume at the bottom
Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is thirty-six times that of satellite B
You have two parallel wires with current flowing in opposite directions, If each current is 2A, and the distance between the two wires is 0.5m, what is the force per meter between the wires
A baseball (m = 155 g) approaches a bat horizontally at the speed of 40.5 m/s (91 mi/h) and is hit straight back at a speed of 45.5 m/s (102 mi/h).
A 100 kg sphere and a 100 g sphere outside it are held fixed with the distance between their centers equal to 0.5 m, What are the magnitude and direction of the force on each of the spheres
If a 200 lb bungee jumper jumps from a bridge 150 ft and touches the top of the river. If the cord absorbs 14 percent of the energy how far will be man be at the Top of the next bounce from the river bottom.
A rifle is aimed horizontally at a target 47.0 away. The bullet hits the target 1.80 below the aim point. Evaluate the bullet's flight time? What was the bullet's speed as it left the barrel?
Two point charges have a total charge magnitude of 576 µC. When placed 1.19 m apart, the force each exerts on the other is 20.2 N and is repulsive. What is the charge magnitude on each? Please include solution.
One cubic meter (1.00 m3) of aluminum has a mass of 2.70 103 kg, and the same volume of iron has a mass of 7.86 103 kg. Find the radius of a solid aluminum sphere that will balance a solid iron sphere of radius 1.24 cm on an equal-arm balance.
A very long solenoid with a circular cross section and radius r= 8.1cm with n= 1.90E+4 turns/m has a magnetic energy density uB= 5.70 mJ/m3. What is the current in solenoid.
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