The technique which is the most useful for measuring the distance to a galaxy located 10 million light-years away is Cepheids
A Cepheid variable is a particular kind of star that pulses radially, varying in diameter and temperature while causing changes in brightness with a clearly discernible steady time and amplitude.
A light-year is defined as the total amount of distance covered by light in a year. It is usually a unit to measure very large distances which usually concerns the Outerspace
A galaxy is a system made up of stars, stellar debris, interstellar gas, dust, and other matter that is gravitationally bound. The name "galaxy" is derived from the Greek word "galaxies," which is an allusion to the Milky Way and literally means "milky."
Learn more about Cepheids here
brainly.com/question/15182908
#SPJ4
Answer:
Average
= 11.25 cm
standard deviation = 0.129 cm
Explanation:
The data provided in the question is:
x₁ = 11.4 cm
x₂ = 11.3 cm
x₃ = 11.2 cm
x₄ = 11.1 cm
total number of data points, N = 4
Now, the average is calculated as:
Average
= 
substituting the values in the above formula we get,
Average
= 
Average
= 11.25 cm
Now the standard deviation is calculated as:
standard deviation = 
substituting the values in the above equation we get,
standard deviation = 
or
standard deviation = 0.129 cm
Gravitational force pushes down on us to keep us on the ground. So it pushes in a downward direction.
Answer:
A jack is used to <u>lift</u> the force.
I think that's the answer. I don't really understand the question.
Ac=centripetal accelration
Fc= centripetal force
V= tangential speed