Related Questions

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?
A 2.58
B 8.59
C 8.94
D 9.31
Travelling at a constant speed of 32 miles per hours, a certain motorboat consumers 24gallons of fuel per hour. What is the fuel consumption of his boat this speed measured in miles per gallons of fuel?
A 2/3
B 3/4
C 4/5
D 4/3
A certain truck uses 18 gallons of diesel fuel in traveling 270 miles. In order for the truck to travel the same distance using 10 gallons of diesel fuel, by how many miles per gallon must the truck's fuel mileage be increased.
A 12
B 15
C 27
D 9
Two tanks are filled to capacity with automobile fuel. The first tank holds 600 gallons more than the second tank. If 100 gallons were to be pumped from each tank, the first tank would then contain 3 times as much fuel as the second tank. What is the total number of gallons of fuel in the two full tanks?
A 1,400
B 1,200
C 1,000
D 900
A rocket engine for the combustion of its fuel
A Carries its own oxygen
B Uses surrounding air
C Uses compressed atmospheric air
D Does not require oxygen
A rocket engine uses __________ for the combustion of its fuel.
A Surrounding air
B Compressed atmospheric air
C Its own oxygen
D None of these
After filling the car's fuel tank, a driver drove from P to Q and then to R. He used 2/5 of the fuel driving from P to Q. if she used another 7 gallons to drive from Q to R and still had 1/4 of the tank full, what is the capacity of the tank in gallons?
A 12
B 18
C 20
D 21
After fillings the car's fuel tank, a driver drove from P to Q and then to R. He used 2/5th portion of the fuel driving from P to Q. If she used another 7 liters to drive from Q to R and still had 1/4th of the tank left, how many liters does the tank hold?
A 12
B 18
C 20
D 21
Read the following passage carefully and then choose the right word to complete the sentence that follows. Rockets are very expensive as it can be used only once. Appled scientists have therefore develped a reusable space craft called a space shuttle which takes off like a rocket; however, does no get destroyed as it returns to earth. It can also be used to lunch satellired into space, retrieve them from space if any repairing os required and allow around 8 scientists to crryout experiments in space. The space shuttle does not get.
A flattened
B enlarged
C ruined
D developed
Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value
A (1- moisture content)
B (1 + moisture content)
C 1 + moisture content
D 1 – moisture content

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