Physics, 23.01.2020 19:31, brinleychristofferse
To navigate, a porpoise emits a sound wave that has a wavelength of 3.3 cm. the speed at which the wave travels in seawater is 1522 m/s. find the period of the wave.
Answers: 2
Physics, 22.06.2019 23:40, itzdulce
To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.
Answers: 2
Physics, 23.06.2019 02:30, hewonabi123
Aproton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?
Answers: 2
To navigate, a porpoise emits a sound wave that has a wavelength of 3.3 cm. the speed at which the w...
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