subject
Physics, 29.01.2020 19:51 1930isainunez

Assume the space shuttle's main engines produce 764,576 newtons of thrust, and the shuttle has a mass of 78,018 kg. why does the shuttle need the two solid rocket boosters (in addition to the main engines)?
a. the boosters get the shuttle to space quicker.
b. the boosters are not needed at launch and are used later after achieving orbit.
c. the boosters are not needed, but they are there in the event one of the main engines does not work.
d. the thrust produced by the main engines equals the shuttle's weight, so the additional thrust from the boosters is needed to lift the shuttle off the launch pad.

ansver
Answers: 1

Other questions on the subject: Physics

image
Physics, 21.06.2019 22:30, IDespretlyneedhelp
Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate
Answers: 2
image
Physics, 22.06.2019 03:00, ronniethefun
1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of
Answers: 2
image
Physics, 22.06.2019 03:00, ambercuevas2707
An internally reversible refrigerator has a modified coefficient of performance accounting for realistic heat transfer processes of where qin is the refrigerator cooling rate, qout is the heat rejection rate, and is the power input. show that copm can be expressed in terms of the reservoir temperatures tc and th, the cold and hot thermal resistances rt, c and rt, h, and qin, as where rtot rt, c rt, h. also, show that the power input may be expressed as 1.39 a household refrigerator operates with cold- and hot-temperature reservoirs of tc 5 c and th 25 c, respectively. when new, the cold and hot side resistances are rc, n 0.05 k/w and rh, n 0.04 k/w, respectively. over time, dust accumulates on the refrigerator’s condenser coil, which is located behind the refrigerator, increasing the hot side resistance to rh, d 0.1 k/w. it is desired to have a refrigerator cooling rate of qin 750 w. using the results of problem 1.38, determine the modified coefficient of performance and the required power input w under (a) clean and (b) dusty coil conditions. internally reversible refrigerator qout qin w high-temperature reservoir low-temperature reservoir th th, i tc, i tc high-temperature side resistance low-temperature side resistance w qin th tc qinrtot tc qinrtot copm tc qinrtot th tc
Answers: 2
image
Physics, 22.06.2019 17:00, bella51032
Explain what will happen if decomposers were apsent from a forest ecoysystem.
Answers: 1
You know the right answer?
Assume the space shuttle's main engines produce 764,576 newtons of thrust, and the shuttle has a mas...

Questions in other subjects:

Konu
Mathematics, 03.09.2019 00:10