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Two 14.0cm -diameter electrodes 0.50cm apart form a parallel-plate capacitor. The electrodes are attached by metal wires to the terminals of a 15Vbattery. After a long time, the capacitor is disconnected from the battery but is not discharged.
a. What is the electric field strength inside the capacitor after insulating handles are used to pull the electrodes away from each other until they are 1.9 cm apart?
b. What is the potential difference between the electrodes after insulating handles are used to pull the electrodes away from each other until they are 1.9cm apart?
The speed of sound in bone is 3500 m/s. How much time does it take the echo of a sound wave to travel from the back of the bone to the front of the bone if the bone is 2.50 cm thick.
A box slides down a 22° ramp with an acceleration of .92m/s2. Determine out the coefficient of kinetic friction between the box and the ramp.
If 3.43×10^8 electrons flow through the ground wire to Earth and the ground wire is then removed, what is the net charge on the electroscope.
The A string of a violin is 32cm long between fixed points with a fundamental frequency of 440Hz and a mass per unit length of 6.5×10-4 kg/m. What is the wave speed in string.
Determine the heat transfer and work for each of the processes. What is the internal energy change for Process 1-2? What is the internal energy change for Process 2-3? (There is an answer posted for the same question, but the answer does not appea..
Two heavy pendula of mass m are suspended from strings of length l inside a railroad car of mass M that can roll freely on horizontal tracks (ignore the moment of inertia of the wheels).
An Australian emu is running due east in a straight line at a speed of 12.5 m/s and slows down to a speed of 11.4 m/s in 7.3 s. (a) What is the direction of the bird's acceleration? north south east west.
Five clocks are being tested in a laboratory. Exactly at noon, as determined by the WWV time signal, on successive days of a week the clocks read as in the following table.
A 10.00 kg grocery is pushed 12.0 m along an aisle by a shopper who exerts a constant horizontal force of 40.0 N. a.) What work is done on the cart? b.)If all frictional forces are neglected, and the cart starts form rest, what is the grocery cart..
Regarding the Earth and a cloud layer 750 m above the Earth as the "plates" of a capacitor, calculate the capacitance. Assume the cloud layer has an area of 1 km2 and that the air between cloud and ground is pure and dry.
A wave is described by y = 0.020 9 sin(kx - ?t), where k = 2.05 rad/m, ? = 3.67 rad/s, x and y are in meters, and t is in seconds, Determine the amplitude, wavelength, frequency and of the wave
An image of a biological sample is to have a resolution of 5 nm. (i) What is the kinetic energy of a beam of electrons with a de Broglie wavelength of 5.0nm.
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