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A spherical capacitor is comprised of a solid inner conduction sphere of radius a with positive charge Q and an isolated, concentric, thin outer conduction shell of radius b and charge -Q. Derive the capacitance expression for this arrangement. What is the value of the capacitance for a = 10mm and b = 15 mm?
Then what is the capacitance if the outer shell is removed, i.e. for an isolated sphere?
A converging lens with two convex surfaces has a front surface with radius of curvature of 11.3 cm; What is the focal length of the lens
A person weighs 784 N in air and has a body-fat percentage of 23.0 %. What is the overall density of this person's body
The top plate is illuminated by monochromatic light of wavelength 544.1 nm. Determine number of dark parallel bands crossing the top plate (including the dark band at zero thickness along the edge of contact between the two plates).
If the coefficient of static friction is 0.951, illustrate what is the maximum speed that the car can take without skidding?
A 7.90×10-2-{rm kg} toy airplane is tied to the ceiling with a string. While the airplane's motor is started, it moves with a constant speed of 1.20m/s in a horizontal circle of radius 0.50m.
Two identical pellet guns are fired simultaneously from the edge of a cliff. These guns impart an initial speed of 24.1 m/s to each pellet. Gun A is fired straight upward, with the pellet going up and then falling back down, eventually hitting the..
A 3.80 kg block is pushed along the ceiling with a constant applied force of 85.0 N that acts at an angle of 55.0° with the horizontal, Determine the coefficient of kinetic friction between block and ceiling
A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 1.85 hours. What is density of the planet? Assume that the planet has a uniform density.
An airplane is descending at an angle of 20 deg with respect to the horizontal when it drops a bomb, determine the range (horizontal distance traveled) of the bomb and the velocity at which it hits the ground.
A charged particle moves in a circle in a magnetic field. (a) Starting with the force relation, write the equation for the radius of the circle
A railroad car of mass2.52multiplied by104kg is moving with a speed of3.95m/s. It collides and couples with three other coupled railroad cars, What is the speed of the four cars after the collision
a component with a 34 ohm resistor is rated for use at power levels not exceeding 2059 mw. how much current can safely
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