Experiencing constant angular acceleration-helicopter blade
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 14.5 rad/s2. Find the speed of a point on the blade 2.15 m from the axis of rotation when the blade has completed 16 revolutions.
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What is the change in exergy of the system above? Assume p0 is 1 bar and T0 is 25 degrees C and b) Repeat part a with 5 kg of air.
If Elyse and Jodi are roommates, what is the probability that parties for these two students are back to back?
Determine the power input to the pump in kW. Determine the power output from the turbine in kW. Determine the thermal efficiency of the cycle.
In the absence of premilinary data, how large a sample must be taken so as to be sure that a 98% confidence interval will specify the proportion to within ±0.05.
Is the average run length performance of a control chart a more meaningful measure of performance than the type I and type II error probabilities? What information does ARL convey that the statistical error probabilities do not?
The pump has an isentropic pump efficiency of 0.8. a) What is its thermal efficiency? b) At what rate is energy being given off by heat transfer to the cold thermal reservoir?
A random sample of 55 standard hotel rooms in the Philadelphia, PA area has a mean nightly cost of $154.17 and a standard deviation of $38.60. Construct a 99% confidence interval for the population mean cost.
Now, consider that both shells are fired at an angle greater than 45 degrees with respect to the horizontal. Remember that enemy ship A is closer than enemy ship B Which shell is launched with a greater vertical velocity?
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