7. Nje peshk noton ne thellesine 50m. Sa eshte shtypja qe ushtron mbi te vetem uji i detit? (dur 1100kg/m
А.
5500Pa
550000Pa
C.
D.
55000Pa
650000Pa
B​

wavelegth as in spectrum red oygbiv

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

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