Engineering, 08.11.2019 19:31 starsinopoli13
Aspacecraft approaches jupiter on a hohmann transfer ellipse from the earth. it will fly by jupiter at an altitude of 20,000 km on the sunlit side of the planet. calculate
a. jupiter’s heliocentric velocity
b. the spacecraft’s heliocentric velocity upon arrival at jupiter’s sphere of influence
c. the spacecraft’s hyperbolic excess velocity
d. the eccentricity and turn angle of the hyperbolic flyby trajectory
e. the spacecraft’s heliocentric velocity at the outbound crossing of the sphere of influence. how does it compare to your answer to part b?
f. the angular momentum of the new heliocentric orbit after flyby.
Answers: 1
Engineering, 04.07.2019 18:10
Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.
Answers: 3
Engineering, 04.07.2019 18:10
At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.
Answers: 1
Engineering, 04.07.2019 18:10
Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way
Answers: 2
Engineering, 04.07.2019 18:10
Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
Answers: 1
Aspacecraft approaches jupiter on a hohmann transfer ellipse from the earth. it will fly by jupiter...
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