A 10.1 m long, 0.0023 m radius copper wire is stretched between two poles. By landing at the center point of the wire, a bird sends a small pulse out in both directions. The pulses reflect at the ends and arrive back at the birds’ location 2.2 seconds after it landed. Determine the tension (in Newtons) in the wire.
We take the density of copper as 8900 Kg/m3

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle