Just subtract the both of them.
silicone rubber is used to make a cast of a tool mark.
Answer:
He calculated his average speed.
Explanation:
Waldo calculated an average of his speed in 2 hours rather than his speed whilst driving which means instead of doing 50/1 hour = 50 mph, he did 50/2hours which is how he got 25 mph. Hope this helps!
Answer:
a) f₁ = 3.50 m
, b) f₂ = 0.84 m
Explanation:
For this exercise we must use the constructor equation
1 / f = 1 / p + 1 / q
where f is the focal length, p is the distance to the object and q is the distance to the image
a) the distance where the image should be placed is q = 3.50 m and the object is located at infinity p = ∞
1 / f₁ = 1 /∞ + 1 / 3.50
f₁ = 3.50 m
b) in this case the image is at q = -0.600 m and the object p = 0.350 m
1 / f₂ = 1 / 0.350 -1 / 0.600
the negative sign, is because the image is in front of the object
1 / f₂ = 1,1905
f₂ = 1 / 1,1905
f₂ = 0.84 m
Based of the distance of each star, we can conclude that Star A must have a larger proper motion than Star B.
The given parameters;
- parallax of star A = 3.4 arc seconds
- parallax of star B = 1.7 arc seconds
The distance of each star form a Parallax is calculated as
Where;
d is the distance to star, [parsecs]
p is parallax, [arc seconds]
The distance of star A;
The distance of start B;
On average, it is known that a nearby star will have a large proper motion.
Based on the distance of each star calculated above, star A is nearer and it will have a larger proper motion that star B.
Learn more here: brainly.com/question/13046296
