What are ultrasonic sound waves used for? (Check all that apply.) A) Alarm systems

B) jewelry cleaning

C) SONAR

D) Checking on the development of a fetus. (Fetus =unborn, developing child)

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50

c) up is the direction the magnetic force is acting on the charge.

not too sure thinking all accelerations are pointed down

3. dark matter

empty space could also be a simple vacuum