In the diagram, q1 = +0.250 mC, q2 = -0.180 mC, and q3 = +0.400 mC. the net force on q2 is zero. how far is q2 from q3?

(make sure you know the direction of each force!)

(hint: milli means 10^-3.)

(unit = m)

This is the substance(s) formed in a chemical reaction.

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same