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Find out the work done by an object. Mattwe pulls his little sister sarah in a sled on the icy surface, with a force of 60 N at an angle of 37 ° upward from the horizontal. If he pulls her a distance of 12 m, what is the work completed by matthew?
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A single-phase diode bridge is supplied by an a c source of 257 V, 60 Hz. This bridge in turn supplies a dc load of I dc = 60 A. Estimate the voltage drops due to (1) source with an inductance of 0.02 m H , (2) each dio ...
Air pressure at sea level is 30 inches of mercury. At an altitude of h feet above sea level, the air pressure, P, in inches of mercury, is given by (a) Sketch a graph of P against h. (b) Find the equation of the tangent ...
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 tho ...
The center of a 8.0 kg lead ball and a 130 g lead ball are separated by 10 cm. (a) what gravitational force does each exert on the other? (b) what is the ratio of this gravitational force to the weight of the 130 g ball?
Similarly, enumerate all strings of length 8 that end in the zero state. (There are 34 of them.) Hence show that we can map 5 bits (32 source strings) to 8 transmitted bits and achieve rate 5/8 = 0.625. What rate can be ...
An accelerating sports car goes from 0 mph to 60 mph in five seconds. Its velocity is given in the following table, converted from miles per hour to feet per second, so that all time measurements are in seconds. (Note: 1 ...
Design a Wilkinson power divider with a power division ratio of P3/P2 = 1/3 and a source impedance of 50 Ohm.
You are observing the surface of the Moon with a 1.3 m diameter telescope. Assuming that the telescope resolution is limited only by diffraction effects, what is the diameter of the smallest crater that the telescope can ...
1. Identify two primitive and two non-primitive cells of a two-dimensional face-centered square lattice. Give the primitive unit vector and draw it on the figure. Is this a primitive lattice or a composite of two simple ...
A certain object is composed of a solid sphere of mass 15 kg and radius 0.5 m, connected to two thin rods of length 2 m and mass 5 kg. The object is initially oriented in the vertical plane and then released. Gravity the ...
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SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless
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Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen