Câu 23. Một viên đạn đang bay thẳng đứng lên cao, khi lên tới điểm cao nhất thì viên đạn bị nổ thành 2
mảnh có khối lượng lần lượt là m và 2m. . Biết tổng động năng của 2 mảnh ngay sau khi nổ là 9000J. Động
năng mảnh đạn có khối lượng m ngay sau khi nổ là
A. 4000J.
B. 2000J . C. 8000J.
D. 6000J.
Answers: 3
Physics, 21.06.2019 19:30
Density of salty water as compared to the density of pure water is(a) is less(b) is always equal(c) is always more(d) may be less or more
Answers: 1
Physics, 21.06.2019 23:30
An object starts from rest at point f and speeds up continuously as it moves around an oval. a. choose a point about 1/8 th of the way around the oval from point f, and label it point g. draw a vector to represent the velocity of the object at point g. b. determine the change in velocity vector between points f and g.
Answers: 1
Physics, 22.06.2019 02:30
Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference
Answers: 1
Physics, 22.06.2019 06:30
What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34
Answers: 3
Câu 23. Một viên đạn đang bay thẳng đứng lên cao, khi lên tới điểm cao nhất thì viên đạn bị nổ thành...
Computers and Technology, 06.05.2021 22:10
Computers and Technology, 06.05.2021 22:10
Biology, 06.05.2021 22:10
Mathematics, 06.05.2021 22:10
English, 06.05.2021 22:10
Mathematics, 06.05.2021 22:10
Mathematics, 06.05.2021 22:10
Mathematics, 06.05.2021 22:10
Mathematics, 06.05.2021 22:10
Computers and Technology, 06.05.2021 22:10
History, 06.05.2021 22:10