Physics, 17.03.2020 06:31 isabellam646
A rocket, which is in deep space and initially at rest relative to an inertial reference frame, has a mass of 60.4 × 105 kg, of which 3.51 × 105 kg is fuel. The rocket engine is then fired for 380 s, during which fuel is consumed at the rate of 490 kg/s. The speed of the exhaust products relative to the rocket is 2.36 km/s. (a) What is the rocket's thrust? After the 380 s firing, what are (b) the mass and (c) the speed of the rocket?
Answers: 3
Physics, 21.06.2019 21:00
When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other
Answers: 3
Physics, 22.06.2019 13:50
9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.
Answers: 1
Physics, 22.06.2019 17:30
Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance
Answers: 3
Physics, 22.06.2019 21:20
Abeverage can is made of 3004-h19 aluminum alloy (elastic modulus 69 gpa, tensile yield strength 285 mpa, density 2.72 g/cm^3). the dimensions on the can are approximated as a thin-walled cylinder with a height of 4.83 inches, diameter of 2.60 inches. empty the can has a mass of 14.2 g. determine: a. the wall thickness of the cylinder b. assuming a pinned-pinned condition what is the critical load? c. assuming a fixed-fixed condition what is the critical load?
Answers: 1
A rocket, which is in deep space and initially at rest relative to an inertial reference frame, has...
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