![subject](/tpl/images/cats/fizika.png)
Physics, 26.02.2020 22:00 cpcoolestkid4
Uranium-235 has a half-life of 710 million years. If it is determined that a certain amount of stored U-235 will be considered safe only when its radioactivity has dropped to 0.10 percent of the original level, approximately how much time must the U-235 be stored securely to be safe
![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, 21.06.2019 23:20
Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 06:30
The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 11:30
If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 23:00
Which of the following will cause an induced current in a coil of wire? the constant field of the earth passing through the coil a magnet resting near the coil a magnet being moved into or out of the coil a wire carrying a constant current near the coil
Answers: 3
You know the right answer?
Uranium-235 has a half-life of 710 million years. If it is determined that a certain amount of store...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/fizika.png)
Physics, 05.05.2020 18:32
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/istoriya.png)
History, 05.05.2020 18:32
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/ap.png)
Advanced Placement (AP), 05.05.2020 18:32
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 18:32
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 05.05.2020 18:32
![question](/tpl/images/cats/istoriya.png)
History, 05.05.2020 18:32
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 18:32
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 05.05.2020 18:32
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 05.05.2020 18:32
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 18:33
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 18:33
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 18:33