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A parallel plate, air filled capacitor, has plates of area 0.80 m^2 and a separation of 0.040 mm.
(a) Find the capacitance.
(b) If a voltage of 25 volts is applied to the capacitor, what is the magnitude of the charge on each plate?
(c) What is the energy stored in the capacitor? Now the plates are filled with strontium titanate having a dielectric constant of 310 and a dielectric strength of 8.0 kV/mm.
(d) What is the new value of capacitance?
(e) For a voltage of 25 V, what is the charge on each plate?
(f) What is the energy stored in the capacitor now?
(g) What is the maximum voltage that can be placed across the capacitor?
A violin string 12.5 cm long and fixed at both ends oscillates in its n = 5 mode. The speed of waves on the string is 268 m/s, and the speed of sound in air is 348 m/s. What are (a) the frequency and (b) the wavelength of the emitted sound wave?
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From colonial times through the 1960s, the primary mode of mental illness treatment was institutional. What factors were responsible for this shift
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