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A fully charged capacitor with a voltage of 120 V is discharged through a resistor.
(a) What is the voltage across the capacitor at the end of five time constants? _ 0.8 volts_ ( partial correct)
(b) At this time, what is the voltage across the resistor? _0.8 volts_ (partial correct)
In 1939 or 1940, Emanuel Zacchini took his human-cannonball act to an extreme: After being shot from a cannon, he soared over three Ferris wheels and into a net, If he reached maximum height over the middle wheel, by how much did he clear it
Gas lanterns used on camping trips have mantles (small lacy bags that give off light) made from a rayon mesh impregnated with thorium, A typical mantle contains 345 mg of thorium. What is the activity of the mantle
The acceleration of gravity is 9.81 m/s2 . Assuming that air resistance is simply a constant 93 N force on the person during the fall, evaluate the person’s velocity just before hitting the net.
A child on a boat throws a 5.40 kg package out horizontally with a speed of 12.0 m/s. determine the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 26.5 kg and the mass of boat is 55.5 kg.
question1a space station in a form of a large wheel 271m in diameter rotates to provide an artificial gravity of 2.6
A grindstone with radius 0.65m starts from rest and rotates counter-clockwise through 3 rev at which point its angular speed is 25 rad/s
a 2.00m by 3.00m plate of aluminum has a mass of 324kg. What is the thickness of the plate
A student sits on a rotating stool holding two 4 kg objects. When his arms are extended horizontally, the objects are 0.8 m from the axis of rotation, and he rotates with angular speed of 0.74 rad/sec. Calculate the final angular speed of the stude..
A 6 ornament is hanging by a 1.30 wire when it is suddenly hit by a 3.00 missile travelling horizontally at 10.0. The missile embeds itself in the ornament throughout the collision.
The current in a coil drops from 3.9 A to 1.8 A in 0.53 s. If the average emf induced in the coil is 12 mV, what is the self-inductance of the coil
Soles of boots that are designed to protect workers from electric shock are rated to pass a maximum rms current of 1.5mA, What is the minimum allowed resistance of the sole
The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.43 rad/s2. It accelerates for 31.5 s, then maintains a constant angular velocity
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