Physics, 17.10.2019 19:30 Babycute8279
While attempting a landing on the moon, astronauts had to change their landing site and land at a spot that was 4 kilometers away from the original site. assuming that they were at a height of 137 meters, calculate the horizontal velocity of the spacecraft during touchdown if it lands in a free-fall mode without using retro engines. consider gravity = 1.63 meters/second^2.
a) 143.23 meters/second
b) 233.33 meters/second
c) 308.88 meters/second
d) 333.44 meters/second
Answers: 3
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The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force
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Aspecimen of oil having an initial volume of 580cm^3 is subjected to a pressure increase of 4.0 mpa, and the volume is found to decrease by 0.40 cm^3. (a) what is the bulk modulus of the material? (b) what is the compressibility of the material?
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While attempting a landing on the moon, astronauts had to change their landing site and land at a sp...
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