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An isolated conductor of arbitrary shape has a net charge of +1.20×10-5 C. Inside the conductor is a cavity within which is a point charge q = +3.60×10-6 C.What is the charge on the cavity wall?What is the charge on the outer surface of the conductor?
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How far down the hill does the shell strike
A laser beam passes through a single slit. We observe an interference pattern on a screen 9.03 m away. Find the width of the slit
The string changes from horizontal to vertical as it passes over a solid pulley of diameter 6.0cm. The pulley is free to turn on a fixed smooth axle. The vertical section of the string supports a 400 g object. The string does not slip at its conta..
A "75 Watt" light bulb uses an average power of 75 W when connected to an rms voltage of 120V. what is the maximum current in the light bulb
A radio station with a power of 20 kW sends out an omnidirectional wave at 1.25 MHz. If the electromagnetic wave has an electric field of 0.22 V/m, what is the magnetic field amplitude
A ball of mass 0.200 kg has a velocity of 1.58 m/s; a ball of mass 0.310 kg has a velocity of -0.405 m/s.They meet in a head-on elastic collision. Find the velocity of their center of mass before and after the collision
A 50g marble moving at 2.2m/s strikes a 30g marble at rest. Assume the collision is perfectly elastic and the marbles collide head-on. What is the speed of the first marble
A 50 kg person stands at the edge of a 7.4 m diameter circular platform, which is mounted horizontally on frictionless bearings and has a total mass of 300 kg. What is the magnitude of the speed of the person (in m/s) with respect to the ground
Two 3.0-cm-diameter electrodes with a 0.15-mm-thick sheet of Teflon between them are attached to a 9.0V battery. What is the potential difference before the Teflon is removed
A 0.88 kg mass attached to a vertical spring of force constant 196 N/m oscillates with a maximum speed of 0.40 m/s. Find the following quantities related to the motion of the mass.
define the hazards for astronauts inside any spacecraft moving in the vicinity of a pulsar.
A plane flies at 1.75 times the speed of sound. Its sonic boom reaches a man on the ground 1.00 min after the plane passes directly overhead
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