According to the exercise principle of balance, a workout should
a. address all components of fitness
b. focus on balance and coordination
c. target specific areas for improvement
d. vary exercise activities over time

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.