Answers: 3
Physics, 21.06.2019 22:00
There is a theory that indicates that dinosaurs became extinct when about 65 million years ago, a large asteroid hit the earth surface. dust caused by this collision blocked the sunlight reaching the earth's surface and many forms of life became extinct due to the cold. fearing this threat, how large the radius of an asteroid should you be looking for if the dangerous asteroid size is approximately the same as the one that killed the dinosaurs? available data suggests that about 18% of that asteroid's mass ended up as a dust spread evenly over earth after eventually settling out of the upper atmosphere. about 0.0180 g/cm^2 of dust, which is chemically different than the earth's rock, covered the earth's surface. typical asteroids have a density of about 1.9 g/cm^3. now that we know the size of the asteroid, how much energy was released during impact, assuming all of it was just the kinetic energy of the asteroid right before the impact?
Answers: 1
Physics, 22.06.2019 05:10
Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?
Answers: 2
Physics, 22.06.2019 14:30
Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules
Answers: 2
Physics, 23.06.2019 00:30
Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? the cloud is extremely hot. the cloud is visible primarily because it reflects light from nearby stars. the cloud is cool and lies between you and a hot star. the cloud is cool and very dense, so that you cannot see any objects that lie behind it.
Answers: 3
True or false? drag forces decrease when the density of a fluid increases...
Mathematics, 30.09.2019 20:30
History, 30.09.2019 20:30
Mathematics, 30.09.2019 20:30
Mathematics, 30.09.2019 20:30
History, 30.09.2019 20:30
Biology, 30.09.2019 20:30
English, 30.09.2019 20:30
Mathematics, 30.09.2019 20:30
Health, 30.09.2019 20:30
Business, 30.09.2019 20:30
Mathematics, 30.09.2019 20:30
Mathematics, 30.09.2019 20:30
Mathematics, 30.09.2019 20:30