Physics, 16.10.2019 23:00 amoakoh800003
Aworld record was set for the men's 100-m dash in the 2008 olympic games in beijing by usain bolt of jamaica. bolt "coasted" across the finish line with a time of 9.69 s. if we assume that bolt accelerated for 3.00 s to reach his maximum speed, and maintained that speed for the rest of the race, (a) calculate his maximum speed and (b) his acceleration. ans: (a) 12.2 m/s, (b) 4.07 m/s2
Answers: 2
Physics, 22.06.2019 00:30
Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedesā principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.
Answers: 2
Physics, 22.06.2019 21:00
Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem
Answers: 1
Aworld record was set for the men's 100-m dash in the 2008 olympic games in beijing by usain bolt of...
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