Which of the following correctly describes the heliocentric model of the solar system? a. mars is at the center of the solar system. b. the sun is at the center of the solar system. c. the moon is at the center of the solar system. d. earth is at the center of the solar system.

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward

How is the gravitational force related to the distance between two objects?