A cargo spacecraft was orbiting the earth. It is equipped with rocket and has an initial mass of 30 metric ton. It wants to catch up with the international space station to deliver the cargo. So its rocket engine was fired for 1 minute. The engine ejects mass at a rate of 30 kg/s with an exhaust velocity of 3.1 km/s. The pressure at the nozzle exit is 5 kPa and the diameter of exit area is 94.4 cm. What is the thrust of the engine in a vacuum
Answers: 1
Physics, 22.06.2019 04:10
Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?
Answers: 3
Physics, 22.06.2019 12:20
The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.
Answers: 2
Physics, 22.06.2019 18:00
What structural formula represents 4 electrons shared between two atoms?
Answers: 1
A cargo spacecraft was orbiting the earth. It is equipped with rocket and has an initial mass of 30...
Social Studies, 24.03.2021 04:00
English, 24.03.2021 04:00
English, 24.03.2021 04:00
Mathematics, 24.03.2021 04:00
Mathematics, 24.03.2021 04:00
History, 24.03.2021 04:00
History, 24.03.2021 04:00
Mathematics, 24.03.2021 04:00
Mathematics, 24.03.2021 04:00
Biology, 24.03.2021 04:00
Mathematics, 24.03.2021 04:00
Mathematics, 24.03.2021 04:00