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An elevator is moving upward at a constant speed of 5.3 m/s. At 32 m above the level ground, a tennis ball is shot from the elevator at a speed of 50 m/s and an angle of 31° above horizontal, relative to the elevator.
How long does it take for the ball to hit the ground? (Neglect air resistance)
Determine the longitudinal growth of a 24-in.-long freestanding grain with a linear thermal coefficient of expansion of 7.5 × 10-5/? F for temperature limits of -40 to 140? F
The thermal design of a heat exchanger to recover heat from a kerosene stream by transfer to a crude oil stream was carried out in. Make a preliminary mechanical design for this exchanger. Base your design on the specification obtained from the CA..
A three-phase, 600-kVA, 2300:230-V, Y-Y transformer bank has an iron loss of 4400 W and a full load copper loss of 7600 W. Find the efficiency of the transformer for 70% full load at 230 V and 0.85 power factor.
Describe the major technical areas involved in engineering a new biomaterial such as a contact lens. Are there differences with other biomaterial based products?
Steam enters a nozzle at 800 kPa and 553.15 K (280°C) at negligible velocity and discharges at a pressure of 525 kPa. Assuming isentropic expansion of the steam in the nozzle,
Develop the dynamic model for this system as functions of time for any given variation in inputs.
How do the ratios determined in parts (a) and (b) compare? What does this tell you about which range may have more areas of practical application?
Suppose that R2 is decreased to 0.5 min/ft2. Compare the old and new values of the ultimate gain and the critical frequency. Would you expect the control system performance to become better or worse, justify your answer.
Summarize the incident, explain what went wrong, discuss the factors leading to the LODD, and lessons learned from the incident.
A hydrocarbon liquid fuel (containing only C and H2) is burnt in air which produces a flue gas which analyses ( orsat analysis ) on dry basis as CO2 =10.5% , O2 = 5% and N2 =84.5%.
One of the classical methods for the determination of the manganese content in steel is to convert all the manganese to the deeply colored permanganate ion and then to measure the absorption of light.
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