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During the initial charge of a capacitor up to its max charge Vo, the initial energy stored in the capacitor is 1/2(CVo)^2 . Show mathematically that this energy is equal to the total energy dissipated as heat in the resistance through which discharging the current flows.
A sound wave frequency 256Hz is propagating in air at 343m/s/ How far apart are two points on the wave that differ in phase by pi/2 and 90
A 5.0-g piece of copper is to be formed into a wire of radius 1.5 mm at a temperature of 40°C. What is the resistance of this wire
Your friend can barely lift a 36-kg concrete block on Earth. How massive a block could she lift on the Mercury
An unspecified force causes a 0.2-kg object to accelerate at 0.4 m/s2. find the acceleration (in m/s2) of the heavier object
A nonconducting disk of radius a lies in the z = 0 plane with its center at the origin. The disk is uniformly charged and has a total charge Q. Find Ez on the z axis at the following positions.
A decade before Einstein published his theory of relativity, J.J. Thomson proposed that the electron might consist of small parts, Find the total electric potential energy of this arrangement
A planet's moon travels in an approximately circular orbit of radius 5.4 107 m with a period of 7 h 21 min. Calculate the mass of the planet from this information
Two spheres, fastened to "pucks" riding on a frictionless air track, are charged with +2 × 10-8 C, and +6 × 10-8 C, correspondingly. Both objects have the same mass. As they repel.
You have a parallel-plate ideal capacitor with a capacitance of 23?F that you connect to a 4V battery until it is fully charged. What is the diameter of the solenoid
Find the final velocity of the two balls if the ball with velocity v2i = ?20.9 cm/s has a mass equal to half that of the ball with initial velocity v1i = +32.1 cm/s. (Indicate the direction with the sign of your answer.)
The crankshaft in a race car goes from rest to 3600rpm in 3.2s. How many revolutions does it make while reaching 3600rpm
You (height of your eyes above the water, 1.75) are standing 2.00 from the edge of a 2.50--deep swimming pool. You notice that you can barely see your cell phone, that went missing a few minutes before, on the bottom of the pool.
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