Answer: get smaller
Explanation:
Parallax is the angle formed by the observation lines to a very distant object from two separated points.
The procedure to measure this distance in the case of a star, is based on observing it from two different places far away from each other, and then through trigonometry reach to the following relationship:
(1)
Where:
is the distance from Earth to the observed star (in Parsecs )
is the earth-sun distance that is equivalent to an astronomical unit (1AU=150000000km)
is the angle of the parallax (in arc seconds )
Now, the distance to an object (measured in parsecs) is the reciprocal of the parallax (measured in arcseconds). Then, in its simplified mode, the stellar parallax is given by the following equation:
(2)
As we can see, there is an inverse relation between the distance and the parallax :
(3)
Hence, if the distance is increased by a factor of 10, the parallax is decreased by a factor of 10.
In other words, the parallax angle gets smaller.
Water is an odd substance for one reason: its solid form is one of the only solids that is less dense than its liquid form. This leads water to 'sink'!
Answer:
A - 4 m/s
Explanation:
When you take the fraction 20 meters per 5 seconds, you can convert it to
This is simple reducing.
The water distribution on earth shows that most water in the Earth's atmosphere and crust comes from the world ocean's saline seawater, while freshwater accounts for only 2.5% of the total. Because the oceans that cover roughly 71% of the area of the Earth reflect blue light, the Earth appears blue from space, and is often referred to as the blue planet and the Pale Blue Dot. An estimated 1.5 to 11 times the amount of water in the oceans may be found hundreds of miles deep within the Earth's interior, although not in liquid form.