If the distance between two negative point charges is increased by a factor of three, the resultant potential energy is what factor times the initial potential energy? a. 3.0
b. 9.0
c. 1/3
d. 1/9

Me ! mark u as brainlest! the speed of a sound wave depends on question 7 options: a) the frequency. b)the medium. c)the air temperature. d)both air temperature and medium.

On a cold day, when the air temperature is 0°c, you empty your lungs and take a deep breath, filling your lungs with 4.2 l of air. if you hold your breath until the temperature of the air in your lungs reaches 37°c, what is the volume of the air in your lungs at that point, assuming the pressure does not change?

Blank liquids and gases exert a buoyant force on objects placed in them