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The formula to determine the height of the rocket above the ground at any time during the rocket's flight is given by: h = 119t - 7t2 where t = the time, in seconds, that has elapsed since the rocket was launched, and h = the height, in meters, of the rocket above the ground at time t. The value of h was 0 when the rocket hit the ground. How many seconds after the rocket was launched did it hit the ground?
Find the propellant mass fraction for a rocket having a structural mass of 150 kg, a payload mass of 20 kg and propellant mass of 1000 kg.
For a rocket with an initial mass of 15,000 kg and carrying a payload of 1000 kg, determine the velocity change if it was ground launched and has an equivalent exhaust velocity of 3000 m/s. Assume the structural mass coefficient to be 0.24.
What is the monoisotopic and average mass of valine? Given data: Mass of the most abundant isotope of Carbon (C°)=12.0000, Mass of most abundant isotope of Hydrogen (H°)=1.0078, Mass of most abundant isotope of Oxygen (O°)=15.9949, Mass of most abundant isotope of Nitrogen (N°)=14.0031, The average mass of Carbon (C)=12.011, The average mass of Hydrogen (H)=1.008, The average mass of Oxygen (O)=15.999, The average mass of Nitrogen (N)=14.007.
In the following question, five statements are given followed by four conclusions I, II, III and IV. You have to consider the given statements to be true even, if they seem to be at variance with commonly known facts. Read all the conclusions and decide which of the following logically follows from the given statements disregarding the commonly known facts. Statements: Some Blue are Color. All Color are Sky. No Rocket is Sky. All Rocket are Space. No Space is Color. Conclusions: I. Some Sky being Space is a possibility. II. Some Blue are Sky. III. Some Color being Rocket is a possibility. IV. Some Blue being Rocket, Space, Sky and Color is a possibility.
Determine the mass ratio (Initial mass/Burnout mass) for each stage for a 3-stage rocket, given the total velocity increment is 2000 m/s, mass ratio is constant for all stages and the exhaust velocity is constant for all stages with a value of 3000 m/s.
If the exit pressure is thrice the atmospheric pressure for a rocket A and if it is twice for rocket B, what will be the ratio of pressure thrust of rocket A to that of B?
In SONET standards, the following are the data rates and payloads: (a) SONET - OC - 1 data rate 51.84 Mbps (b) OC – 1 payload 40.112 M bits/s (c) OC - 1 data rate 50.112 Mbps (d) OC - 1 payload 50.112 Mbps Which of the above is correct for OC - 1
If the theoretical payload increases by the use of a third stage for an initially two stage rockets is 8-10%, which of the following values is a logical value for theoretical payload increase for the use of an additional fourth stage?
In a engineering, test, a rocket sled is propelled into a target. If the sled's distance d in meters from the target is given by the fomula d = - 1.5 t2+120, where t is the number of seconds after rocket ignition, then how many seconds have passed since rocket ignition when the sled is 10 meters from the target?