![subject](/tpl/images/cats/fizika.png)
Physics, 20.05.2021 02:10 BeautyxQueen
74Be decays with a half-life of about 53 d. It is produced in the upper atmosphere, and filters down onto the Earth's surface. If a plant leaf is detected to have 350 decays/s of 74Be, how long do we have to wait for the decay rate to drop to 25 per second?
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 22:00
Let v1, v2, w be three linearly independent vectors in r 3 . that is, they do not all lie on the same plane. for each of the following (infinite) set of vectors, carefully sketch it in r 3 , and determine whether or not it is a vector space (i.e., a subspace of r 3 ). explain your reasoning
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 04:10
Calculate the work done by an external agent during an isothermal compression of 1.00 mol of oxygen from a volume of 22.4 l at 10âc and 1.0 atm pressure to 16.8l
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 06:40
Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 11:10
While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.
Answers: 3
You know the right answer?
74Be decays with a half-life of about 53 d. It is produced in the upper atmosphere, and filters down...
Questions
![question](/tpl/images/cats/mkx.png)
Arts, 29.01.2021 05:20
![question](/tpl/images/cats/mat.png)
Mathematics, 29.01.2021 05:20
![question](/tpl/images/cats/mat.png)
Mathematics, 29.01.2021 05:20
![question](/tpl/images/cats/mat.png)
Mathematics, 29.01.2021 05:20
![question](/tpl/images/cats/himiya.png)
Chemistry, 29.01.2021 05:20
![question](/tpl/images/cats/mat.png)
Mathematics, 29.01.2021 05:20
![question](/tpl/images/cats/mat.png)
Mathematics, 29.01.2021 05:20
![question](/tpl/images/cats/mat.png)
Mathematics, 29.01.2021 05:20
![question](/tpl/images/cats/mat.png)
Mathematics, 29.01.2021 05:20
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
English, 29.01.2021 05:20
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 29.01.2021 05:20
![question](/tpl/images/cats/istoriya.png)
History, 29.01.2021 05:20
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 29.01.2021 05:20
![question](/tpl/images/cats/mat.png)