What is the energy of a photon whose frequency is 6.0 x 10^20?
(h=6.63 x10^-34 j•s; 1 eV...
![subject](/tpl/images/cats/fizika.png)
Physics, 06.05.2020 00:10 jaydostm9540
What is the energy of a photon whose frequency is 6.0 x 10^20?
(h=6.63 x10^-34 j•s; 1 eV=1.06x10^-19 J)
A. 1.6 MeV
B. 2.5 MeV
C. 3.3 MeV
D. 4.8 MeV
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/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 20:20
Aplanet of mass m 6.75 x 1024 kg is orbiting in a circular path a star of mass m 2.75 x 1029 kg. the radius of the orbit is r 8.05 x107 km. what is the orbital period (in earth days) of the planet tplanet?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 10:00
In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 17:40
The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 18:00
Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 27.08.2019 04:00
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 27.08.2019 04:00
![question](/tpl/images/cats/biologiya.png)
Biology, 27.08.2019 04:00
![question](/tpl/images/cats/biologiya.png)
Biology, 27.08.2019 04:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 27.08.2019 04:00
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 27.08.2019 04:00
![question](/tpl/images/cats/en.png)
English, 27.08.2019 04:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 27.08.2019 04:00
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 27.08.2019 04:00
![question](/tpl/images/cats/fizika.png)
Physics, 27.08.2019 04:00
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
English, 27.08.2019 04:00
![question](/tpl/images/cats/istoriya.png)
History, 27.08.2019 04:00