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Compare the expected message length when an ASCII file is compressed by the following three methods.Huffman-with-header. Read the whole file, find the empirical frequency of each symbol, construct a Huffman code for those frequencies, transmit the code by transmitting the lengths of the Huffman codewords, then transmit the file using the Huffman code. (The actual codewords don't need to be transmitted, since we can use a deterministic method for building the tree given the codelengths.)
A 20 g block of aluminum is at 370 degrees C after 1,130calories have been transferred to it. What was the original temperature
An airplane propeller is 2.08 m in length (from tip to tip) and hasa mass of 117kg. If it were not rotating, how far would it have to drop infree fall to acquire the same kinetic energy
A mass of 1200 kg is moving with a speed of 17.5 m/s as it starts up an inclined surface. What is the distance up the incline does the mass move
A Camera flash circuit (being used for a coil gun) with a capacitance of .180 mF is charged to a voltage of 330 volts. Calculate the energy stored in it. What resistance should be put in series with the capacitance to limit the discharging current..
An iron vat is 13 meter long at room temperature (20 degree Celsius). Determine how much longer is it when it contains boiling water at 1 atm pressure
Suppose that you are carrying a suitcase that contains a gyroscope whose large angular velocity is directed horizontally forward. explain what happens to the suitcase
An electric motor rotating a workshop grinding wheel at a rate of103 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude1.50 rad/s2. How long does it take for the grindingwheel to stop?
An 830 kilogram sports car can drive around an unbanked turn at a maximum speed of 58 m/s without slipping. Calculate what would be the maximum speed if no down force acted on the car
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).
A 0.954-kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. compute the average current supplied to the car\'s motor?
The electric field at the surface of a charged, solid, coppersphere with radius 0.210 m is3380 N/C directed toward the center ofthe sphere. What is the potential at the center of the sphere, ifwe take the potential to be zero infinitely far from thes..
Then, the pendulum is brought to planet X (which is smaller than Earth), and now takes 1.151 seconds for the pendulum to swing from one turning point to the other turning point. Determing the length of the pendulum, the acceleration of gravity on ..
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