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45 | 84 | By Anonymous (not verified) 1 year 3 months ago |
What work is done on a level track in bringing the velocity of a train weighing 200metric tons from zero to 45 kph, if the frictional resistance at any velocity is 45N/ton, and if the change in speed is accomplished in length of 1000m? (Ans. 26780.95 KN/m)
C. If the track were a 1% upgrade, what would be the additional work to be done?
please help!
A ball is thrown down the incline strikes it a a distance s = 254.5 ft. If the height h = 64 ft. above the point of release, compute its initial velocity abd inclination theta.
(there is a given 3 for opposite, 1 for adjacent)
z1= 4^(e^[(-i)(π/4)])
z2= -5i
z3= 3√3<30°
Note: < is the angle sign. I don't have symbol for.the angle sign in my keyboard.
Solve for:
[z1^(4cos z4)]/log(sub z1)z3
Please help :(
A 400N weight starts down a 300 incline with an initial velocity of 4m/s. What is the velocity of the weight after 10 seconds if F=0.20 for the incline?
(x²+4) y' + 3 xy = x
Can anyone tell where does -2/5 came from? pleaaaaase
Please help me solve this one!
the jet fighter has a mass 6450kg reguries 10 seconds from rest to reach its take off speed 250km/hr under the jet thrust t 48KN compute resistance "R" during take oof?
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