Physics, 06.12.2019 20:31 cristian901997
Let a spacecraft in permanent orbit around the earth be used for delivering payloads from leo to geostationary (gso) orbit. before each flight from leo the spacecraft is refueled with propellant which it uses up in its round trip to gso and back. the outbound leg requires four times as much propellant as the inbound return leg. the delta-v for hohmann transfer from leo to gso is 4.22 km/s. the specific impulse of the propulsion system is 430 s. if the payload mass is to be 3500 kg, calculate the mass of the empty vehicle.
Answers: 3
Physics, 21.06.2019 21:00
Ahowler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 4.6 km. assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 × 10-12 w/m2. what is the acoustic power emitted by the howler
Answers: 2
Physics, 22.06.2019 08:40
When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called
Answers: 2
Physics, 22.06.2019 12:40
Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)
Answers: 2
Physics, 22.06.2019 15:00
Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost
Answers: 1
Let a spacecraft in permanent orbit around the earth be used for delivering payloads from leo to geo...
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