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A rocket nozzle has a chamber pressure of 20 Bar (2 MPa) and a chamber temperature of 2750 K. The rocket is designed to operate isentropically at 12,500 m altitude. Note that the pressure at 12,500 m can be estimated using this equation P/P0 = exp [- g (z – z0)/gc/R/T]. You may assume a mean atmospheric temperature of 247 K for this equation. Determine the design thrust for a throat area of 0.1 m2. Assume that k = 1.4 and MW = 20.
starting from rest a particle moving in a straight line has anacceleration of a 2t - 6 ms2 where t is inseconds. what
a desuperheater is a steady-flow adiabatic mixing process that mixes superheated water vapor with colder liquid water
in a contraption built by a fraternity a person sits at the center of a swinging platform with mass m 400kg and length
1 given three kilogram of gas in a piston-cylinder assembly undergo a process during which the relationship between
decay of radioactive materials can be modeled by the equation aa0ekt where a is the amount at time t a0 is the amount
a piston-cylinder assembly contains 5 kg of a two-phase liquid-vapor mixture of water having 32 quality is initially at
a water pump pumps out 2400kg of water pr min. a if water coming out with a velocity of 3ms what is power of the pump?
two points b and c lie on radial line of a rotating disk. the points are 2 inches apart. vb700 ftmin and vc880ftmin.
a. motorcycle is used to stunt show to go over a valley .if the initial speed at a is u ms then evaluate a ?the minimum
A 3L, 4-stroke, V6 engine with a 9.5:1 compression ratio delivers 205 N-m at 3600 RPM. At this speed, air enters the cylinder at 85 kPa and 60 C and combustion ends at 20 crank angle after top-dead-center. It is known that the engine is square and th..
two previously undeformed cylindrical specimens of an alloy are to be strain hardened by reducing their cross-sectional
The 80-N horizontal force P acts on a bell crank as shown. (a) Replace P with an equivalent force-couple system at B. (b) Find the two vertical forces at C and D that are equivalent to the couple found in part a.
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