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The charge distribution within a spherical region bounded by radii a and b (a ) is given as ρv = k/r , where k is a constant. Determine the electric field intensity everywhere in space. What is the total flux passing through a surface at r = b?
A 34cm diameter wheel accelerates uniformly about its center from 130rpm to 370rpm in 4.8s. Determine the tangential component of the linear acceleration of a point on the edge of the wheel 1.6s
A 0.144 kg baseball leaves a pitcher's hand at a speed of 22.5 m/s. If air drag is negligible, how much work has the pitcher done on the ball by throwing it
What is the thinnest soap film (excluding the case of zero thickness) that appears black when viewed by reflected light with a wavelength of 480 {rm nm}? The index of refraction of the film is 1.33, and there is air on both sides of the film.
A certain humidifier operates by raising water to the boiling point and then evaporating it. Each minute 30 g of water at 20? C is added to replace the 30 g that are evaporated. The heat of fusion of water is 333 kJ/kg, the heat of vaporization is225..
A 0.80m -long metal rod is dropped vertically onto a marble floor. When the rod strikes the floor, What is the speed of sound in the rod
A helicopter is ascending vertically with a speed of 4.50 m/s. At a height of 195 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground.
A ball is thrown straight up at 15.0 m/s. How much time does it take for the ball to be 5.00 m above its release point
Two circular coils of current-carrying wire have the same magnetic moment. The first coil has a radius of 0.091 m, 120 turns, and carries a current of 3.3 A. The second coil has 170 turns and carries a current of 9.1 A. What is the radius of the seco..
You want to support a sheet of fireproof paper horizontally, using only a vertical upward beam of light spread uniformly over the sheet. If the paper is black and hence absorbs all the light that hits it, find what must be the intensity of the light..
Radiotelescopes are designed to observe 21-cmwaves emitted by atomic hydrogen gas. Estimate the distance to this galaxy
A projectile proton with a speed of 550 m/s collides elastically with a target proton initially at rest. Find the speed of the projectile proton after the collision
Describe the components in the atom. Indicate the charge on each of the species and their location
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