The centers of two 15.0 kg spheres are separated by 3.00 m. the magnitude of the gravitational force between the two spheres is approximately what?
a) 1.11 × 10^-10 n
b) 3.34 × 10^-10 n
c) 1.67 × 10^-9 n
d) 5.00 × 10^-9 n

Suppose that recording station n is located 200 km north of the epicenter of an earthquake, and recording station s is located 100 km south of the epicenter of the same earthquake. which of the following statements would be true?