An alien spaceship traveling at 0.600c toward the earth launches a landing craft with an advance guard of purchasing agents and physics teachers. the lander travels in the same direction with a speed of 0.800c relative to the mother ship. as observed on the earth, the spaceship is 0.200 ly from the earth when the lander is launched.(a) what speed do the earth observers measure for the approaching lander? (b) what is the distance to the earth at the time of lander launch, as observed by the aliens?
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Physics, 22.06.2019 07:00, shaffergabe10
Oxygen and hydrogen gas are at the same temperature t. what is the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen.
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Physics, 22.06.2019 09:30, 11needhelp11
(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?
Answers: 3
Physics, 22.06.2019 11:30, georgesarkes12
1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? your
Answers: 2
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