Physics, 21.11.2019 05:31 brandonleekenyon
On august 10, 1972, a large meteorite skipped across the atmosphere above the western united states and western canada, much like a stone skipped across water. the accompanying fireball was so bright that it could be seen in the daytime sky and was brighter than the usual meteorite trail. the meteorite's mass was about 4.4 × 106 kg; it's speed was about 14 km/s. had it entered the atmosphere vertically, it would have hit earth's surface with about the same speed. (a) calculate the meteorite's loss of energy (as a positive number, in joules) that would have been associated with the vertical impact. (b) express the energy as a multiple of the explosive energy of 1 megaton of tnt, which is 4.2 × 1015 j. (c) the energy associated with the atomic bomb explosion over hiroshima was equivalent to 13 kilotons of tnt. to how many hiroshima bombs would the meteorite impact have been equivalent?
Answers: 3
Physics, 21.06.2019 22:30, jadalysrodriguez
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
Answers: 1
Physics, 22.06.2019 10:30, SauceyNaee
Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.
Answers: 1
On august 10, 1972, a large meteorite skipped across the atmosphere above the western united states...
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