Physics, 17.12.2020 06:00 Kalistaaaaaaa
URGENT!! Please ;-;
Planet Y has twice the mass of Earth. An astronaut visits Planet Y and observes that his weight is half his weight on Earth. What is the radius of Planet Y? Let R = Earth's radius)
A. R
B. 2R
C. 4R
D. 0.5R
Answers: 3
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Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?
Answers: 1
URGENT!! Please ;-;
Planet Y has twice the mass of Earth. An astronaut visits Planet Y and observes...
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