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A 0.3-m diameter pipeline terminates in a nozzle of outlet diameter = 0.15 m. When water flows through this pipe at a rate of 0.25 m3 /s, the force required to hold the pipe (N) is most nearly.
A. 660 N.
B. 1,320 N.
C. 2,650 N.
D. 5,300 N.
Cooks often use aluminum pans for cooking in ovens. Some cooks try to reach into the hot oven and lift the pan out without hotpads. How successful would they be? Explain
discuss whether it would be advisable to hot work or cold work the following metals and alloys on the basis of melting
an engine of mass 180 kg is to be supported on four helical springs. when the engine speed is 900 rpm there is a
1 a cylinderpiston contains a saturated vapor r-410a at 10 c the volume is 10 l. the r-410a is compressed to 2mpa 60 c
a hydrocooling unit can cool fruits and vegetables from 30 to 5 oc at a rate of 20000 kgh under the following
a wind tunnel made of circular duct consists of a contracting nozzle a test section in which experiments are conducted
fresh snow absorbs 80 percent of the incident solar radiation with wavelengths shorter than lambda1 0.4 microm 10
a shaft is made of a steel alloy having an allowable shear stress of 12 ksi. If the diameter of the shaft is 1.5 in., determine the maximum torque T that can be transmitted. What would be the maximum torque T' if a 1 in. diameter hole is bored thr..
At 45° latitude, the gravitational acceleration as a function of elevation z above sea level is given by g = a - bz, where a = 9.807 m/s2 and b = 3.32 x 10-6 s-2. Determine the height above sea level where the weight of an object will decrease by 1.4..
A 90-N force is applied to the control rod AB as shown. Knowing that the length of the rod is 225 mm, determine the moment of the force about point B by resolving the force into horizontal and vertical components.
the uniform 100-kg beam is freely hinged about its upper end a and is initially at rest in the vertical position with
the gate in the is hinged at H.the gate is 2 m wide and normal to the palne of the diagram.calculate the force required to hold the gate closed.
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