Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 2.5 104 kg (about 25 tons). The rocket engines are shut off, and you're coasting along with a constant velocity of ‹ 0, 31, 0 › km/s. As you pass the location ‹ 6, 4, 0 › km you briefly fire side thruster rockets, so that your spacecraft experiences a net force of ‹ 4.0 105, 0, 0 › N for 19 s. The ejected gases have a mass that is small compared to the mass of the spacecraft. You then continue coasting with the rocket engines turned off. Where are you an hour later? (Think about what approximations or simplifying assumptions you made in your analysis. Also think about the choice of system: what are the surroundings that exert external forces on your system?)
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Physics, 22.06.2019 16:30
When measuring volume, why is it important to use the correct tools and units to attain the greatest accuracy? use specific examples from the lab to support your answer. (5 points)
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Physics, 22.06.2019 20:30
Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600
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Physics, 22.06.2019 22:00
Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)
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Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 2.5 10...
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