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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.)
The ceiling of a classroom is 3.75 m above the floor. A student tosses an apple vertically upward, releasing it 0.50 m above the floor. What is the maximum initial speed that can be given to the apple
A relief airplane is delivering a food package to a group of people stranded on a very small island. What is the speed vf of the package when it hits the ground
An observer moving toward Earth with a speed of 0.96 notices that it takes 5.2 for a person to fill her car with gas. Assume, in its place, that the observer had been moving away from Earth with a speed of 0.80.
Two identical loudspeakers that are 5.00 m apart and face toward each other are driven in phase by the same oscillator at a frequency of 875 Hz
To water the yard, you use a hose with a diameter of 3.3 . Water flows from the hose with a speed of 1.5cm. with what speed does water spray from the hose
an object is 18cm in front of a adiverging lens that has a focal length of -12cm. how far in front of the lens should the object be placed
A nuclear power plant operates at 65% of its maximum theoretical (Carnot) efficiency between temperatures of 580oC and 350oC. find how much exhaust heat is discharged per hour
electerons and protons each with energies of 0.4 ev are incident on a square barrier 3 ev high and 0.1 nm wide. compute
The pressure in a vessel containing methane and water at 70°C is 10 atm. Estimate the mole fraction of methane in the liquid
Two point charges of +20.0 ?C and -8.00 ?C are separated by a distance of 20.0 cm. What is the intensity of electric field E midway between these two charges
A skydiver opens the parachute at the moment when he is 540 meters above the ground and his speed (right before opening the parachute) is 97m/s. What should be the magnitude of the air resistance force
question a small ferryboat is 4.00 m wide and 6.00 m long. when a loaded truck pulls onto it the boat sinks an
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