What does a weather balloon do? Select three options.
warns about severe weather
enables forecasts seven to 10 days in advance
measures conditions in the upper atmosphere
collects data that predicts changes in the atmosphere
uses mathematical equations to show what will happen if conditions change

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

multiply 2kg by latent heat of vap

answer///terminator or twilight zone;