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Computer hard drives are made of aluminum platters coated with a layer of magnetic material. Each tiny magnetic domain represents one bit of information (1 or 0).
A) How many such domains must a hard drive of 3 TB have (1 Byte = 8 bits)?
B) A typical drive has a round platter of 9.5 cm in diameter with a hole of 2.5 cm diameter at the center. Assuming the domain are squares, what is the length of their sides in such a drive?
You have a resistor of resistance 230ohm , an inductor of inductance 0.410H , a capacitor of capacitance 5.80 microF, What is the voltage amplitudes acros the capacitor
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A bag of cement of weight 375 N hangs from three wires as suggested in Figure P5.18. Two of the wires make angles θ1 = 55.0° and θ2 = 25.0° with the horizontal. If the system is in equilibrium, find out the tensions in the wires.
A camel sets out to cross the desert, which is 45.2 km wide in the north-south direc- tion. Calculate the camel's eastward displacement while he crosses the desert
A 1.10m long ramp is inclined at 16? to the horizontal. A solid ball is released from rest at the top of the ramp. Find its translational acceleration
Two blocks are connected by an ideal string that passes over a massless, frictionless pulley. determine the magnitude of the blocks acceleration
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The coil in a 60-Hz ac generator has 125 turns, each having an area of 3.0*10^-2 m^2, What is the RMS output voltage
The frequency of an opera singer is 450 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer who is running down the road towards the opera singer with a speed 25.0 m/s.
An object at rest explodes into three pieces of equal masses. One moves east at 23 m/s, while the second piece moves northwest at 14 m/s. Estimate the velocity of the third piece? Suppose each piece has a mass of 2 kg.
A recording engineer works in a soundproofed room that is 39.4 dB quieter than the outside. what is the intensity outside
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