You need to know the formula:
25 = 1/2 * g * t^2
t = √(50/g) = 2.258 s, where I use g = 9.8 m/s^2
Answer: 25 m
Explanation:
The resolving power of a telescope is given by:
![\theta = 1.22\frac{\lambda}{diameter}](https://tex.z-dn.net/?f=%20%5Ctheta%20%3D%201.22%5Cfrac%7B%5Clambda%7D%7Bdiameter%7D)
Diameter of the telescope = 10.0 m
Wavelength of the telescope = 550 nm = 550 ×10⁻⁹m
Thus, the resolving power of one of telescopes at the Keck Observatory is:
![\theta = 1.22 \frac{550\times 10^{-9}}{10.0} =671 \times 10^{-10} rad = 3.85 \times 10^{-6} deg](https://tex.z-dn.net/?f=%20%5Ctheta%20%3D%201.22%20%5Cfrac%7B550%5Ctimes%2010%5E%7B-9%7D%7D%7B10.0%7D%20%3D671%20%5Ctimes%2010%5E%7B-10%7D%20rad%20%3D%203.85%20%5Ctimes%2010%5E%7B-6%7D%20deg)
Also, ![tan\theta = \frac {\text {separation between two objects}}{\text{distance to the objects}}](https://tex.z-dn.net/?f=%20tan%5Ctheta%20%3D%20%5Cfrac%20%7B%5Ctext%20%7Bseparation%20between%20two%20objects%7D%7D%7B%5Ctext%7Bdistance%20to%20the%20objects%7D%7D%20)
separation between objects = tan (3.85×10⁻⁶)° × 3.8×10⁵km = 2.5 × 10⁻²km =25 m
Answer:
38.4 cells a day in 24 hours
Explanation:
I do another of studying but hope you have a great day and you're welcome for answering
Answer:
c. Equal to the weight of the block.
Explanation:
We know that when an object floats , the displaced water by the floating body
has weight equal to the weight of the body . In this condition the upthrust becomes equal to the weight of the body .
In the present case the beaker is full to the brim with water . Then the body was made to float into it . While attaining equilibrium in water , it displaces water whose weight must have been equal to its weight . That liquid got spilled over the edge and collected on the tray .
So water collected on the tray must be equal to the weight of the body floating.
Answer:
The weight of a 100 kg person on Earth is 100 N. This is because mass and weight are the same and do not change. On the Sun the person would weight 28 times more so you would multiply 100 N x 28 = 2, 800 N. The weight of a 100 kg person on Earth is 10.2 N.
Explanation:
but on the sun it would be zero because they would be burned to a chrip also