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A television tube needs a high voltage to work properly, and uses 80 Watt of power when it's running. The power supplied to it from the secondary winding of a transformer; the primary winding is connected to the voltage source of 120 Volt (rms). (what is available at the receptacle on the wall.) When the tube is on, the tube draws 6.7 mA of current from the secondary windings.
a) Find what must be the ratio of the number of turns in the secondary to that in the primary windings, Ns/Np, of this transformer?
b) Find what must be the voltage in the secondary?
Two identical guitar strings are stretched with the same tension between supports that are not the same distance apart. The fundamental frequency of the higher-pitched string is 440Hz, and the speed of transverse waves in both wires is 150 m/s. How m..
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A particle of mass m in a three-dimensional harmonic oscillator of poterntial energy (m w^2 r^2)/2 has spectrum given by E=h bar w(2nr+l+3/2) where nr is the radial quantum number and l is the orbital angular momentum suppose the particle has charge ..
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