![subject](/tpl/images/cats/fizika.png)
Physics, 04.07.2019 14:30 LunaShiner
After two half-lives, how much original material from a sample remains? 25% or 50%
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 06:50
What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl,max are applied?
Answers: 1
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 21:30
The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? a b c d
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 23:10
Ablue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.5 m/s 2 . a green car arrives at the position of the stop-light 6.5 s after the light had turned green. if t = 0 when the light turns green, at what time does the green car catch the blue car if the green car maintains the slowest constant speed necessary to catch up to the blue car? answer in units of s.
Answers: 1
You know the right answer?
After two half-lives, how much original material from a sample remains? 25% or 50%...
Questions
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 01.12.2020 14:10
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 01.12.2020 14:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 01.12.2020 14:10
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 01.12.2020 14:10
![question](/tpl/images/cats/en.png)
English, 01.12.2020 14:10
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
English, 01.12.2020 14:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fr.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 01.12.2020 14:10
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 14:10
![question](/tpl/images/cats/biologiya.png)
Biology, 01.12.2020 14:10
![question](/tpl/images/cats/en.png)
English, 01.12.2020 14:10