Fossils similar to marine life found in the oceans today have been found in rocks on top of mountains. How can this be explained
2 answers:
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Answer:
15.68 m/s
Explanation:
Given that,
She catches the ball 3.2 s later at the same height from which it was thrown.
When it reaches the maximum height, its height is equal to 0.
It will move under the action of gravity.
2 here comes for the time of ascent and descent.
So,
So, the initial upward speed of the ball is 15.68 m/s.
(a) v=HR defines the Hubble constant. According to R=vt, the gap R between any two far-separated objects opens at a constant speed. The time interval t since the Big Bang is then calculated.
v=HvΔt→Δt=
<h3>What exactly is the Hubble constant?</h3>
- Hubble constant, in cosmology, a proportionality constant in the relationship between the velocities of distant galaxies and their distances.
- It expresses the rate of expansion of the universe. It is represented by the symbol
, with the subscript indicating that the value is measured at the present time, and is named after Edwin Hubble, an American astronomer who attempted to measure its value in 1929.
- Hubble established the cosmological velocity-distance law using redshifts of distant galaxies measured by Vesto Slipher, also of the United States, and his own distance estimates for these galaxies:
To learn more about Hubble constant refer to
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