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A child A is swinging from a swing that is attached to a trolley that is free to move along a fixed rail. Letting L = 3.4 m, if at a given instant aB = 3.3 m/s2 . theta = 23 degrees, theta dot = 0.45 rad/s and theta double dot = -0.2 rad/s2. Determine the magnitude of the acceleration of the child relative to the rail at that instant. Give answer to four significant figures.
the maximum power output capability of an engine decreases with altitude because the air density and hence the mass
Water enters a 2 meter diameter pipe at a temperature of 23 deg C. The water leaves the pipe at a temperature of 97 deg C The laminar flow rate is such that the Reynolds number is 800. What is the mass flow rate?
compute (a) the interplanar spacing for the set of planes and (b) the atomic radius for the rhodium atom.
If the truck starts from rest when xD is zero, and moves forward with a constant acceleration of aD = 5 m/s2, determine the speed of the block at the instant xD = 3 m.
the uniform slender bar abc weighs 6 lb and is intially at rest with end a bearing against the stop in the horizontal
is the average run length performance of a control chart a more meaningful measure of performance than the type i and
Compare the time and cost of using the following three alternative methods for casting the concrete for the wall: 1) direct chute 2) pumped 3) crane and bucket.
which emits more sox per unit amount of electricity produced a coal-fired plant with a 90 efficient so2 scrubber or an
a car is to be hoisted by elevator to the fourth floor of a parking garage which is 48 ft above the ground. if the
a vapor-compression refrigeration system uses refrigerant 134a as the working fluid. the refrigerant enters the
a cylinder of metal that is originally 100mm tall and 50mm in diameter must be open die forged to a height if 50mm. the
a quantity of air undergoes a thermodynamic cycle consisting of three internally reversible processes in series process
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