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A sphere of radius R1 has a uniform charge density ρ within its volume except fora small spherical hollow of radius R2 located a distance a from the center. Find the E ?eld at the center of the hollow, and ?nd the potential at the same point, assuming the potential is zero in?nitely far away from the sphere.
If the radius of a pipe is reduced from 2.87 m to 0.75 m along the direction of a gas flow, how many times does the speed of gas flow increase
A double slit illuminated with two different colors of wavelengths 694 and 425 forms a two-colored diffraction pattern on a screen located away. What order maximum for occurs near from zeroth order
The centripetal force on an 820 gram object on the end of a 2.0-m massless string being swung in a horizontal circle is 4.0 N. What is the linear speed of the object?
Light is reflected from a transparent coffee table. When angle of incidence is 52.2°, the reflected light is completely polarized parallel to surface of the table top. What is the index of refraction of the material of the table?
An ice chest contains 12 cans of soda at 50o C. Each can of soda has a mass of 0.35 kilogram and a specific heat capacity of 3800 J/(kg Co). find the final temperature of the watermelon and soda
A 53.6-kg skateboarder starts out with a speed of 2.49 m/s. He does 114 J of work on himself by pushing with his feet against the ground. How much has the vertical height of the skater changed
A circular coil of 20 turns and radius 5 cm is placed with its plane oriented 90 degrees to a uniform magnetic field of 0.1T. The field is now increased at a steady rate, reaching a value of 0.5T after 4.0 seconds?
If the current in the solenoid increases uniformly from 0 to 5.9A in 0.70 sec, what will be the induced emf in the short coil during this time
The venturi flowmeter shown in the figure is used to measure the flow rate of water in a solar collector system. The flowmeter is inserted in a pipe with diameter 1.9 {rm cm}; at the venturi of flowmeter the diameter is reduced to 0.64 {rm cm}. Th..
A 3 kg toy car with a speed of 5 m/s collides head-on with a 2 kg car traveling in the opposite direction with a speed of 5 m/s, how much kinetic energy is lost
It is desired to construct a solenoid that will have a resistance of 6.00 (at 20°C) and produce a magnetic field of 4.00 10-2 T at its center when it carries a current of 4.80 A. estimate the length the solenoid should have
Calculate the centripetal acceleration of a point 7.50cm from the axis of an ultracenteifuge spinning at 75000rpm. Determine the ratio of this acceleration to that of gravity for comparison's sake. Show work and formulas for credit.
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