Fission reactions can get out of control without what taking place? select one of the options below as your a. chain reaction b. critical mass c. neutron heating d. neutron moderation e. subcritical mass

Option (A) is the correct answer.

Explanation:

Nuclear chain reactions occur in fission reactions only. Nuclear fission reactions are defined as the reactions in which larger nuclide splits into two or more smaller daughter nuclides.

For example,

These neutrons released will again bombard with the uranium atom leading to another fission reaction and this chain continues. And, if this chain gets disturbed by any external source then reaction becomes out of control as very high amount of energy releases in nuclear reactions.

Hence, in nuclear chain reactions the neutrons which are released in the previous fission reaction act as the starting material in the next reaction. Thus, this process continues to many reactions and hence, is known as nuclear chain reaction.

Thus, we can conclude that fission reactions can get out of control without chain reaction taking place.

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;