A plastic sheet with a uniform surface charge density of −3.32 µC/m2 lies in a horizontal plane. What charge (magnitude and sign) must a piece of Styrofoam with a mass of 24.0 g have, if it is in equilibrium (it hovers) below the sheet?

Why are pipes bursting in the in extremely cold weather?

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.