Answer:
6 month interval
Explanation:
The distance to a nearby star in theory is more simple than
one might think! First we must learn about the parallax effect. This is the mechanism our eyes use to perceive things at a distance! When we look at the star from the earth we see it at different angles throughout the earth's movement around the sun similar to how we see when we cover on eye at a time. Modern telescopes and technology can help calculate the angle of the star to the earth with just two measurements (attached photo!) Since we know the distance of the earth from the sun we can use a simple trigonometric function to calculate the distance to the star. The two measurements needed to calculate the angle of the star to the earth caused by parallax (in short angle θ) are shown in the second attached photo.
So using a simple trigonometric function
we can solve for d which is the distance of the earth to the star:
![d=\frac{r}{Sin\theta}](https://tex.z-dn.net/?f=d%3D%5Cfrac%7Br%7D%7BSin%5Ctheta%7D)
In the first attached photo a picture where r is the distance to the star and the base of the triangle is the diameter of the earth.
1) 6 degrees per second ( you can convert it from degrees it that's not what you're looking for)
2) .47 cm per sec
Answer:
5000 kg/m^3
Explanation:
Here. we are asked to calculate the density of the rock specimen.
we proceed as follows;
mass of water displaced is calculated by finding the difference between the actual and apparent masses
This has a value of 0.45kg - 0.36kg = 0.09kg
The rock and water that is displaced have exactly the same volume and thus their densities is the same. This makes the ratio of their masses to be the same
Ratio of masses is
0.45 / 0.09 = 5.0
Here we can see that the mass of the rock is five times the mass of the water so it must be five times denser
Thus, since the density of water is 1000 kg/m^3 , the density of rock is 5000 kg/m^3
Base on the said question or problem that state and ask to calculate the current of the said light bulb and in my further calculation and further analysis, I would say that the current of the light bulb would be 0.0292. I hope you are satisfied with my answer and feel free to ask for more