Should be B, because one rotation is a day one revolution is a day(also to check I looked up the difference).
Answer:
A. task and social cohesion.
Explanation:
Cohesion comprises of both task cohesion and social cohesion.
Task Cohesion generally refers to the degree to which members of a work group come together to achieve common goals, example, to win a game or challenge.
Social Cohesion: reflects the degree to which members of a team like each other and interact accordingly.
If by Period you mean Column, they share the same amount of electrons in their outer shell.
Answer:
a) The half life of the radioactive sample is 0.22 years.
b) It will take 0.16 years to sample to decay to 40% of its original amount.
Explanation:
a) Initial amount of radioactive substance =
Final amount of radioactive substance after 1 year=
Decay constant = k
Decaying of radio active sample follows first order kinetics:
Half life of the sample =
The half life of the radioactive sample is 0.22 years.
b)
Initial amount of radioactive substance =
Final amount of radioactive substance after t years=
Decay constant = k =
Decaying of radio active sample follows first order kinetics:
Solving for t:
t = 0.1587 years ≈ 0.16 years
It will take 0.16 years to sample to decay to 40% of its original amount.
Answer:
A)
Explanation:
Increasing of oxidation number shows that the process is oxidation(or losing of electrons).
-1 to +2, oxidation number is increased. This is an oxidation process.
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