Physics, 11.11.2020 22:30 jazzhands16
The count rate of a rodioactive material is 800 count\min. If the half-life of the material is 4 days, what would the count rate be in 16 days later.
Answers: 1
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 07:00
World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s
Answers: 2
Physics, 22.06.2019 08:00
You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished
Answers: 1
The count rate of a rodioactive material is 800 count\min. If the half-life of the material is 4 day...
Mathematics, 05.12.2020 01:30
History, 05.12.2020 01:30
Computers and Technology, 05.12.2020 01:30
World Languages, 05.12.2020 01:30
Social Studies, 05.12.2020 01:30
Mathematics, 05.12.2020 01:30
Mathematics, 05.12.2020 01:30
Mathematics, 05.12.2020 01:30
Chemistry, 05.12.2020 01:30
English, 05.12.2020 01:30