eras and then smaller periods based on geologic and biologic events that occurred during those times
millennia and then smaller periods based on geologic and biologic events that occurred during those times
periods and then smaller eras based on geologic and biologic events that occurred during those times
Studies of sedimentary rocks and fossils have helped scientists understand the history of Earth. the geologic time is organized on the geologic time scale as eras and then smaller periods based on geologic and biologic events that occurred during those times, therefore the correct answer is B .
Science is the methodical, empirically-based pursuit and application of knowledge and understanding of the natural and social worlds.
As given in the problem statement Studies of sedimentary rocks and fossils have helped scientists understand the history of Earth .
Studies of fossils and sedimentary rocks have aided in the understanding of Earth's history. The correct response is B since the geologic time is divided into eras and then smaller periods depending on the geology and biological events that took place during those times .
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The answer is B) eras and then smaller periods based on geologic and biologic events that occurred during those times. I took this test :)
at a distance of 0.2m for m the equilibrium position.
Answer:
a) 12.8 N
b) 3.2 m/s²
Explanation:
I'm guessing the period is 0.5π s.
Period of a spring in simple harmonic motion is:
T = 2π √(m/k)
Given T = 0.5π and m = 2 kg:
0.5π = 2π √(2/k)
0.25 = √(2/k)
0.0625 = 2/k
k = 32
The spring constant is 32 N/m, and the maximum displacement is 0.4 m. The maximum force can be found with Hooke's law:
F = kx
F = (32 N/m) (0.4 m)
F = 12.8 N
The acceleration can be found with Newton's second law:
∑F = ma
kx = ma
(32 N/m) (0.2 m) = (2 kg) a
a = 3.2 m/s²