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A capacitor consists of three concentric spherical shells with radii R,2R and 3R. The inner and outer shells are connected by a wire (passing through a hole in the middle shell, without touching it), so they are at the same potential. The shells start neutral, and then a battery transfers charge from the middle shell to the inner and outer shells.
(a) If the final charge on the middle shell is -Q, what are the charges on the inner and outer shells?
(b) What is the capacitance of the system?
(c) If the battery is disconnected, what happens to the three charges on the shells if charge q is added to the outer shell?
On a hot summer day in the state of Washington while kayaking, I saw several swimmers jump from a railroad bridge into the Snohomish River below. The swimmers stepped off the bridge, and I estimated that they hit the water 1 s later.
A football is kicked at an angle ? = 37.0° with a velocity of 20.0 m/s. Calculate a) the maximum height, b) the time of travel before it hits the ground, c) how far away it hits the ground, d) the velocity vector at the maximum height, and e) the ..
Calculate the mass of 10.4 gal of gas at 20.0°C
An object is placed 45 cm from a concave mirror of radius 92 cm. (a) Find the location of the image. (Enter in cm. Use a negative number if the image is behind the mirror) cm (b) What is the magnification of the mirror? Is the image real or virtual? ..
A baseball is hit with a speed of 33.0 ms-1 at an angle of 56.0 degrees. It land's on the flat roof of a nearby building with a height of 13 m. If the ball was hit when it was 1.7 m above the ground, what horizontal distance does it travel before it ..
A block is projected up a frictionless inclined plane with initial speed v0 = 8.50 m/s. The angle of incline is ? = 27.7°. How far up the plane does it go
A 10 cm x 10 cm x 10 cm cube of aluminum (?=2.7 g/cm3, ?=1.32x10-11 Pa-1) at 20oC is compressed isothermally, the pressure applied to it increasing from 1.0 atm to 20 atm. Calculate the work done on the block during the compression.
A single string is made up of two strings of different densities joined together. Each of the strings is 1.40 m long. what is the tension on the combined string
A 2.52g bullet moving at 290 m/s enters and stops in an initially stationary 2.50 k/g wooden block on a horizontal frictionless surface. How much work was done in stopping the bullet
Steam locomotives have an eff of 17% and operate with hot steam temp of 425C. A.) what is the cold temp B.) what is the max eff if the cold temp 150C
A simple harmonic oscillator takes 26 seconds to undergo 22 complete oscillations. What is the period of the oscillator
Evaluate if the ball clears the crossbar, what is its height with respect to the crossbar when it reaches the plane of the crossbar?
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