An interstellar space probe is launched from earth. after a brief period of acceleration it moves with a constant velocity, 70.0% of the speed of light. its nuclear-powered batteries supply the energy to keep its data transmitter active continuously. the batteries have a lifetime of 15.9 years as measured in a rest frame. (a) how long do the batteries on the space probe last as measured by mission control on earth?
yr
(b) how far is the probe from earth when its batteries fail, as measured by mission control?
ly
(c) how far is the probe from earth, as measured by its built-in trip odometer; when its batteries fail?
ly
Answers: 1
Physics, 21.06.2019 16:30
The mass of a muon is 207 times the electron mass; the average lifetime of muons at rest is 2.21 μs. in a certain experiment, muons moving through a laboratory are measured to have an average lifetime of 7.04 μs. for the moving muons, what are (a) β (b) k, and (c) p? the rest energy of the electron is 0.511 mev.
Answers: 2
Physics, 22.06.2019 11:30
Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.
Answers: 2
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