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A 120-lb cabinet is mounted on casters that can be locked to prevent their rotation. The coefficient of static friction between the floor and each caster is 0.30. If h = 32 in., determine the magnitude of the force P required to move the cabinet to the right (a) if all casters are locked,
(b) if the casters at B are locked and the casters at A are free to rotate,
(c) if the casters at A are locked and the casters at B are free to rotate.
a carnot cycle engine using 1 kg air has the following conditionsheat addition beginning at 15 mpa and 1200k and
Assume that the concentration profile for species A in the concentration boundary layer is of the form CA( y) = Dy2 + Ey + F, where D, E, and F are con- stants at any x-location and y is measured along a normal from the surface.
a steam power plant has high and low pressures of 20 mpa and 10 kpa respectively and one open fwh operating at 1 mpa
an airplane used to drop water on bushfire is flying horizontally in a straight line at 180 mih at altitude of 300 ft.
the motion of a linkage in a mechanical system is examined by engineers. it has been determined that the velocity of an
A four cylinder, 3.6 liter CI engine operates with a compression ratio of 18 and an air fuel ratio of 17. The engine operates on a dual cycle. The maximum pressure is limited to 12 MPa and the maximum temperature is limited to 3600 K. Assume that ..
design a polynomial follower motion with asymmetrical rise-fall single dwell and find peak velocity ms acceleration ms2
1- a car starts rest and with constant acceleration achieves a velocity of 15 ms. when it travels of 200 m determine
The characteristics at both low speed (approximately 20 mph) and high speed (90 mph) are of interest. For a series of projected model tests, a wind tunnel that will accommodate a model with a characteristic length of 4 ft is to be used. Determine ..
The vapour has 5 K of superheat at entry to the compressor.In each case calculate the C.O.P.(ref.) and the refrigerating effect per kg. What would be the C.O.P.(ref.) of a reversed Carnot cycle operating between the same saturation temperatures?
a riser in the shape of a sphere is to be designed for a sand casting mold. the casting is a rectanglar plate with
r-134a at 20 psia and 40of is compressed slowly adiabatically and without friction to a final pressure of 200 psia.
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