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A spherical surface completely surrounds a collection of charges. Find the electric flux through the surface if the collection consists of the following charges.
(a) a single +4.90 multiply.gif 10-6 C charge.
(b) a single -2.85 multiply.gif 10-6 C charge.
(c) both of the charges in (a) and (b).
A proton experiences a force of 2.45 x 10-15 N on it as it travels 3000 meter per second perpendicular to a magnetic field. obtain what would be the net magnetic field strength
The first and second electron shells of an element are filled and there are five electrons in the third electron shell
select the quantity that has changed(velocity or speed) for a car that travels north at 88 km/h and then turns east while continuing to move at 88 km/h. define your answer.
Ball of mass "m" hangs on a string of length L` straight down from a cart of mass M standing on horizontal rails. The cart can move along the rails without friction. While the cart is at rest, the ball is given a horizontal velocity v0, v0
An ideal gas in a piston is placed in a refrigerator, which removes 686 J of energy from the gas via cooling. find the net change in the internal energy of the gas in the piston
You require a sheet of copper for a home project, and since it is sold by the square foot, you buy 2.0 ft2 (according to the label). But, when you get home and check the actual dimensions for yourself, you find that the area is really 1.997 ft2. If y..
A small mailbag is released from a helicopter that is descending steadily at 2.13 m/s. what is the speed of the mailbag
An elevator of mass 1.00 x 104 kilogram accelerates upward at a rate of 1.5 m/s2. Find the tension in the cable supporting the elevator
A wheel rotates about a horizontal axis, as shown in the figure. It has an outer radius R1 = 18.8 cm and mass M1 = 4.51 kg. What is the acceleration of the hanging weight after it is released
How long will it take until the sun has used up all the hydrogen atoms in the core (the central 10%)? That is, what is the main-sequence lifetime of the sun and compare the lifetime of the sun to the current age.
a star of mass 2.0 x 1031 kg that is 4.4 x 1020 m from the center of a galaxy revolves around that center once every
suppose that an insulating container of negligible mass contains 0.12 kg of water at a temperature of 10 degrees c. now
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