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The total external force on an object is F = 10t i + 60 j (lb). At t = 0s, the object's velocity is v = 20 j (ft/s). At t = 12 s, the x-component of its velocity is 48 ft/s. What is the magnitude of the impulse applied to the object from t = 0 to t = 12 s?
a 2250 l tank contains 5.682 kg of steam at 5 bar. determine the temperature and z compressibility of steam using a.
a simplified gear system for a mechanical watch is shown. knowing that gear a has a constant angular velocity of 1
a large tower is to be supported by a series of steel wires.it is estimated that the load on each wire will be 11100N. determine the minimum required wire diameter assuming a factor of safety of 2 and a yield strength of 1030MPa.
a 2 in diameter straight round shaft is subjected to a bending of 2000 ft.lb a what is the nominal bending stress at
define mach number and determine the type of speed an aircraft is flying if the aircraft speed is 880 mph at an
a tornado rips off a 100 m2 roof with a mass of 1000 kg. what is the minimum vacuum pressure needed to do that if we
a man of mass m1 walks along a plank of length l with a constant acceleration a relative to the plank. The mass of the plank is m2 and the coefficient of friction between the plank and the ground is mu. Find the distance the plank moves if the man..
a piston-cylinder contains argon at a temperature of 50 degc a pressure of 500 kpa and a volume of 10 liters. a
nitrogen initially occupying 3.5 ft3 at 87 psia 480degf undergoes in internally reversible expansion during which pv1.2
a rectangular tank open to the atmosphere is filled with water to a depth of 2.5 m as shown. a u-tube manometer is
two particles a and b start from rest at the origin s0 and move along a straight line such that aa8t-4 fts2 and
a hand drill is used to drill a holbein a very hard material. because the bit is very dull it spins with out advancing.
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