( 1.05 x 10¹⁵ km ) x ( 1 LY / 9.5 x 10¹² km ) x ( 1 psc / 3.262 LY ) =
(1.05) / (9.5 x 3.262) x (km · LY · psc) / (km · LY) x (10¹⁵⁻¹²) =
(0.03388) x (psc) x (10³) =
33.88 parsecs
The answer is evolution. When a specifies evolves over time they change and adapt to their environment.
Answer:
2.2 s
Explanation:
Hi!
Let's consider the origin of the coordinate system at the ground, and consider that the clam starts with zero velocity, the equation of motion of the clam is given by
![x(t) = 23.1 m - \frac{1}{2}(9.8 m/s^2) t^2](https://tex.z-dn.net/?f=x%28t%29%20%3D%2023.1%20m%20-%20%5Cfrac%7B1%7D%7B2%7D%289.8%20m%2Fs%5E2%29%20t%5E2)
We are looking for a time t for which x(t) = 0
![0 = 23.1 m - (4.9 m/s^2) t^2](https://tex.z-dn.net/?f=0%20%3D%2023.1%20m%20-%20%284.9%20m%2Fs%5E2%29%20t%5E2)
Solving for t:
![t = \sqrt{\frac{23.1}{4.9}} s = 2.17124 s](https://tex.z-dn.net/?f=t%20%3D%20%5Csqrt%7B%5Cfrac%7B23.1%7D%7B4.9%7D%7D%20s%20%3D%202.17124%20s)
Rounding at the first decimal:
t = 2.2 s
A solar eclipse will be visible over a wide area of the north polar region
on Friday, March 20.
England is not in the path of totality, but it's close enough so that a large
part of the sun will be covered, and it will be a spectacular sight.
For Londoners, the eclipse begins Friday morning at 8:25 AM,when the
moon just begins to eat away at the sun's edge. It advances slowly, as more
and more of the sun disappears, and reaches maximum at 9:31 AM. Then
the obscured part of the sun begins to shrink, and the complete disk is
restored by the end of the eclipse at 10:41AM, after a period of 2 hours
16 minutes during which part of the sun appears to be missing.
The catch in observing the eclipse is:
<em><u>YOU MUST NOT LOOK AT THE SUN</u></em>.
Staring at the sun for a period of time can cause permanent damage to
your vision, even though <em><u>you don't feel it while it's happening</u></em>.
This is not a useful place to try and give you complete instructions or
suggestions for observing the sun over a period of hours. Please look
in your local newspaper, or search online for phrases like "safe eclipse
viewing".