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Two capacitors are connected parallel to each other and connected to the battery with voltage 30V . Let C_1 = 9.5 u F ,C2 = 4.7 u F be their capacitances. Suppose the charged capacitors are disconnected from the source and from each other, and then reconnected to each other with plates of opposite sign together.
Part A By how much does the energy of the system decrease?
Find the focal length of a glass lens that has an index of refraction equal to 1.58, a concave surface that has a radius of curvature of magnitude 104 cm, and a convex surface
Now a peg is placed 4/5 of the way down pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its starting po..
When Albert turns on his small desk lamp, the light falling on his book has intensity Io. When this is not quite enough he turns the small lamp off, What is the intensity of light falling on the book
A pipe carrying 20°C water has a diameter of 2.4 cm. Estimate the maximum flow speed if the flow must be streamline
For someone who chooses y=0 to be 5 meteres above the ground and up as positive, what will he get for the potential energy
q1. a rifle with the barrel length of 62cm fires a 12g bullet with a horizontal speed of 380ms. the bullet strikes a
A wire is 3.500 m long. After applying a force to one end of the wire, it is now 3.504 m long. Calculate the tensile strain in the wire
A golfer drives a 0.046kg golf ball from an elevated tee, giving the ball an initial horizontal velocity of 45 m/s. (a) what is the magnitude of the average force exerted by the club on the ball if the contact time for the golf club on the ball du..
the siren of a fire engine that is driving northward at 30.0 m/s emits a frequency of 2000 Hz. A truck in front of this fire engine is moving northward at 20.0 m/s. what frequency does the truck driver hear
Two 4.4 kg bodies, A and B, collide. The velocities before the collision are A = (12 + 46) m/s and B = (-32 + 22) m/s. After the collision, 'A = (-16 + 30) m/s. What is the change in the total kinetic energy
Assume you knew some unstable particles have a half life of 1.00 seconds when not moving but had a half-life of 5.00 seconds while in a particle accelerator. How fast must the particles have been traveling
300. V are applied to a motor with a windings resistance of 65.0 ohms. At the maximum motor speed the back emf is 155. V. Find the current in windings as the motor starts
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