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a linear spring k is to be designed to stop a 20-mg railroad car traveling at 8km/h within 400 mm after impact. Find the smallest value of k that will produce the desired result.
thermodynamically analyze a hydrogen joule-thomson cycle ment to liquify hydrogen with isothermal compression occurring
Ten pounds-mass of R-22 is at an initial volume of 4.059 ft3 and pressure of 200 psia. It is compressed isobaric ally until its volume is two-thirds of its initial volume. The piston is then held in place as the refrigerant cools until its temperatur..
Cola, approximated as pure water at 20°C, is to fill an 8-oz container (1 U.S. gal =128 fl oz) through a 5-mmdiameter tube. Estimate the minimum filling time if the tube flow is to remain laminar. For what cola (water) temperature would this minim..
A smooth steel (SG= 7.86) sphere is immersed in a stream of ethanol at 20°C moving at 1.5 m/s. Estimate its drag in N from Fig. 5.3a. What stre quadruple its drag? Take D 2.5 cm.
Draw a sketch to show the basic design for preparing the edges of two 20-mm thick plates to be butt-joined by shielded metal arc welding with One sided access
air enters the compressor of a regenerative gas-turbine engine at 300 k and 100 kpa where it is compressed to 800 kpa
the diameter of the hollow core of a solid propellant grain remains axially uniform during burning. its length is 5 m
Redesign the absorber so that ω1 6 2000 rpm and ω2 7 4000 rpm, rendering the system safe for operation.
Describe in detail - using hand drawn imagery and text, describe the information required to be detailed in a site plan. analysis describe the process to assess a buildings exposure to wind loads and what forms of bracing are used to counteract thes..
A rigid container of 0.1 m3 and negligible heat capacity contains steam at 500 kPa and 400C. If the container is cooled, determine the pressure and temperature at which steam starts to condense. Determine also the amount of heat removed during the co..
The actual (irreversible) components of a small Brayton cycle gas-turbine engine are shown. The cycle pressure ratio is 15 and the maximum turbine temperature is 1600 K. The turbine and the compressor are insulated and have isentropic efficiencies of..
measurements on a steam turbine shows that steam enters at 1000 psia 900degf and mass flow of 45000 lbmh exits as
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