jay13212

On site since: 2019-02-11 13:24:47

Age: 22 years

About:

Facebook:

Asked questions: 7

Gave answers: 10

Point: 208

Best answer: 3

Questions

Engineering, 26.07.2019 19:20

A0.7 m^3 rigid tank contains refrigerant-134a initially at 200 kpa and 40% quality. heat is now transferred to the refrigerant until the pressure reac...

Engineering, 26.07.2019 19:20

Solid rockets can experience significant 2 phase flow. a) true b) false...

Engineering, 26.07.2019 19:20

Burn rate can be affected by: a. variations in chamber pressure b. variations in initial grain temperature c. gas flow velocity d. all of the above...

Engineering, 26.07.2019 19:20

Burn rate is a key parameter that drives the performance of a solid rocket motor. a) true b) false...

Engineering, 26.07.2019 19:30

In the fully-developed (hydrodynamically and thermally) region of a flow in a circular tube a) the velocity at any radial position does not change alo...

Engineering, 26.07.2019 19:30

Arigid 10 l vessel initially contains a water at 100°c with 25% quality. the mixture is then heated until its temperature is 250°c. find the initial a...

Engineering, 26.07.2019 19:30

Arigid tank initially contains 2 kg of steam at 500 kpa and 350°c. the steam is then cooled until it is at 100°c. determine the final pressure and the...

Engineering, 26.07.2019 19:30

Proper grain stress/strain analysis is required in solid motor design: a. to ensure good motor structure b. to avoid surface cracks c. to avoid bond...

Mathematics, 26.07.2019 19:30

Apoliceman shoots a bullet into the air from a height of 10 feet with an initial vertical velocity of 160 feet per second. use the vertica...

Engineering, 26.07.2019 19:30

Specific impulse of a solid rocket motor can be calculated using average thrust because thrust is not time dependent for solid motors. a) true b) fals...

Engineering, 26.07.2019 19:30

Consider a laminar oil flow in a tube, the hydrodynamic entry length is entry length. a) larger than the thermal b) shorter than c) comparable with...

Engineering, 26.07.2019 19:30

In solid motors, htpb and pban are two common types of plasticizers. a) true b) false...

Engineering, 26.07.2019 19:30

Oil is cooled down from 140°c to 70°c in a parallel flow heat exchanger using cold liquid water. the water flow is heated from 10 °c to 40°c. calculat...

Engineering, 26.07.2019 19:30

Alarge flat plate is dissipating heat uniformly through its top surface due to the embedded heaters. air at 20°c is flowing over the top surface, whil...

Engineering, 26.07.2019 19:30

If the velocity of a flow over a flat plate is increased four times, and the flow remains in the laminar regime, with all other properties remaining t...

Engineering, 26.07.2019 19:30

In solid rocket motor terminology, a sliver is: a. a basic geometric shape b. leftover propellant c. a test article for propellant characterization d...

Engineering, 26.07.2019 19:30

Afacility is equipped with a wind tunnel, and can measure the friction coefficient for flat surfaces and airfoils. with the measured friction data, on...

Engineering, 26.07.2019 19:30

Water at 70f flows at 90 ft3/min along a 1200 ft section of a 6 inch diameter smooth steel pipe. find the resulting pressure head developed by this fl...

Biology, 26.07.2019 19:30

Science--a shark, a crab and a shrimp find themselves in hypoxic conditions. who do you think is most likely to survive a dead zone? select one: a....

Biology, 26.07.2019 19:30

Science--an excess of which of the following would most likely be associated with formation of a dead zone? select one: a. carbon b. oxygen c. nitro...