Suppose a large power plant generates electricity at 12.0 kv. its old transformer once converted this voltage to 365 kv. the secondary coil of this transformer is being replaced so that its output can be 760 kv for more efficient cross-country transmission on upgraded transmission lines. randomized variables v1

part (a) what is the ratio of turns in the new secondary to the number of turns in the old secondary? 33% part (b) what is the ratio of new current output to the old current output for the same power input to the transformer?

Explanation:

V denotes voltage

I denotes current

p denotes primary

s denotes secondary

o denotes old

n denotes new

N denotes number of turns

For transformers we have the following relation

The required ratio is

For current

The required ratio is

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.