When electromagnetic fields interact with charged particles, (1 point) Group of answer choices

they become stronger because they gain protons

they become weaker because they gain electrons

electromagnetic force will occur

electromagnetic forces are canceled

choosing tennis and golf balls is your inde choice.

their mass and volume are dep

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

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