If we want to put a three-stage rocket into orbit 100 miles above the earth’s surface, a finalvelocity of approximately is required. Suppose that each stage is built with astructural factor and an exhaust speed of .(a) Find the minimum total mass of the rocket engines as a function of .(b) Find the mass of each individual stage as a function of . (They are not equally sized!)

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v