Answer:
The time it takes for 14C to radioactively decay is described by its half-life. C has a half-life of 5,730 years. In other words, after 5,730 years, only half of the original amount of 14C remains in a sample of organic material. After an additional 5,730 years–or 11,460 years total–only a quarter of the 14C remains.
Explanation:
Hope this helps
Answer:
1.379 m/s2
Explanation:
F=ma
There is a negative force from the elevator...
F = (715 kg) (-9.81 m/s2)
F = -7014.15 N
Cable + elevator = 8000 N + (-7014.15 N)
F = 985.85 N
a = F/m
985.85 N/715 kg = 1.379 m/s2
Multiply 5 newton by each height. 1st is 5 joules, 2nd is 7.5, while 3rd is 10 joules.
The energy of a wave is directly proportional to the square of the waves amplitude. Therefore, E = A² where A is the amplitude. This therefore means when the amplitude of a wave is doubled the energy will be quadrupled, when the amplitude is tripled the energy increases by a nine fold and so on.
Thus, in this case if the energy is 4J, then the amplitude will be √4 = 2 .