Answer:
It corresponds to a distance of 100 parsecs away from Earth.
Explanation:
The angle due to the change in position of a nearby object against the background stars it is known as parallax.
It is defined in a analytic way as it follows:
Where d is the distance to the star.
(1)
Equation (1) can be rewritten in terms of d:
(2)
Equation (2) represents the distance in a unit known as parsec (pc).
The parallax angle can be used to find out the distance by means of triangulation. Making a triangle between the nearby star, the Sun and the Earth (as is shown in the image below), knowing that the distance between the Earth and the Sun (150000000 Km), is defined as 1 astronomical unit (1AU).
For the case of ():
Hence, it corresponds to a distance of 100 parsecs away from Earth.
<em>Summary:</em>
Notice how a small parallax angle means that the object is farther away.
Key terms:
Parsec: Parallax of arc second
The ID, or Independent Variable, I think.
Answer:
18930 Btu
Explanation:
The amount of heat needed to raise the temperature of a body of water is given by:
Q = m * cp * (tfin - ti)
The mass is the volume multiplied by the density
m = V * ρ
So
Q = V * ρ * cp * (tfin - ti)
The volume of water is 60 gallon, which is equivalent to 8.021 ft^3
Now:
Q = 8.021 ft^3 * 62.17 lbm/(ft^3) * 0.999 Btu/(lbm * R)* (104 R - 66 R) = 18930 Btu
Since we have a temperature difference we can convert Fahrenheit to Rankine