Which of the following forces opposes drag and is created through
combustions between fuel and air?
a. subsonic
b. pressure
c. lift
d. thrust

The correct answer is thrust

Explanation:

The correct answer is thrust

Thrust & drag are 2 main forces out of four forces of flight Thrust is that force in  direction of movement that pushes a flying machine. However, drag is that force that works contrary to movement direction. Thrust and drag are act in opposites direction. They push the aircraft or any other object that fly in opposite directions.

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when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml