Find the distance from the plane 9x + y + 5z = 72 to the plane 9x + y + 5z = 54. The distance is d=
(Type an exact answer, using radicals as needed.)
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An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

Fluids at rest possess no flow energy. a)- true b)- false

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false