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Question: A father pulls his children in a wagon for 25 minutes covering 1.25 miles on a level sidewalk. He pulls with an average force of 35 lbf at an angle of 45 degrees to the sidewalk.
(a) How much work is done (in ft · lbf)?
(b) What is the average horsepower required?
a 12 ft by 12 ft square room has one exterior wall with a surface temperature of 58f and three interior wall surface
Sketch the fully annotated velocity triangles for a Parsons turbine stage. Use your sketch to show that the specific work produced per stage is given as w_stage = (C_b)^2 [1 + 2(f/C_b)(cot(B_1))].
A vehicle traveling at a constant speed v in the horizontal direction encounters a triangular road bump, as shown in Fig. 4.48. Treating the vehicle as an undamped spring-mass system, determine the response of the vehicle in the vertical direction..
a convenient and secure attachment point for fall protection lines is located 35 feet above ground level on the
kerosene having a specific weight of 50 lbft3 is flowing at 10 galmin from 1inch pipe to a 2 in pipe. calculate the
water flows vertically upward through a 10-m-long cylindrical pipe and then through a 10-m-long nozzle connected to it.
In an isentropic process a perfect gas expands from 140kPa to 110kPa. If the initial temperature is of the gas is 150 deg C, determine the temperature of the gas at the end of expansion.
in a jet engine a flow of air at 1000 k 200 kpa and 40 ms enters a nozzle where the air exits at 500 ms 90 kpa. what is
Extra insurance of €500 0 per year is required for the plastic liner (to cover repair costs if the liner leaks). The city cost of long-term funds is 5%. Determine which swimming pool design has the lower present cost.
Draw a suitable schematic diagram for an isolation amplifier, and explain the operation of this device.
Repeat the computer experiment of Section 1.5, this time, however, positioning the two moons of Figure 1.8 to be on the edge of separability, that is, d = 0. Determine the classification error rate produced by the algorithm over 2,000 test data po..
The stresses at a point in plane stress on the body of a car were found to be sigma_xx = 30 MPa (C), sigma_yy = 60 MPa (T) and Tau_xy = 40 Mpausing matrix methods a) determine the normal and shear stresses on a plane passing through the point that is..
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