2.5 m/s is the right answer you know the answers are on the regents website this is a waste of time.
Answer:
4) Long exposure to low-energy radiation could give the same dose as a short burst of high-energy radiation.
Explanation:
When it comes to ionizing radiation, absorption should be kept as low as reasonably achievable (ALARA). This can be achieved by control of time spent in the vicinity of the source, the distance to the source and the use of personal protective equipment (PPE).
A short burst of high-energy radiation releases or generates a high radiation dose in a short time frame. This can also be achieved due to long exposure to low-energy radiation, which results into the gradual accumulation of the dose.
A region around a charged particle or object within which a force would be exerted on other charged particles or objects
Answer:
In chemical compounds, atoms tends to have the electron configuration of a noble gas.
Explanation:
The noble gases are unreactive because of their electron configurations. This noble gas neon has the electron configuration of 1s22s22p6 . It has a full outer shell and cannot incorporate any more electrons into the valence shell.
The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons and thus the electron configuration of a noble gas. An exception to an octet of electrons is in the case of the first noble gas, helium, which only has two valence electrons.