Atomicity consistency isolation durability a. ensures that at the end of any transaction the system will be in a valid state b. a transaction is fully completed or not begun at all c. once a transaction completes and commits, all of the changes are permanent d. appears to be the only action that the system is carrying out

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for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.