Question 9 of 10 What are two ways in which ultrasound technology produces images?

A.
By using sound in frequencies that reflect off body tissues

B.
By measuring the time it takes for reflected sound waves to be detected

C.
By the absorption of sound waves in the body

D.
By detecting the frequencies of emitted sound waves

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

a=d/t

a="triangle"v/t

explanation:

a = acceleration

i think its c if i'm wrong