2. The Kepler's third-law constant of proportionality for the Sun, C's, is 3.4 x 10" m'/s-, If Earth's radius of orbit is doubled, then C would become a. 4.2 x 10 m /s d. 1.4 x 10" m /s b. 8.5 x 10 m /s c. 2.7 x 10" m'/s c. 3.4 x 10" m'/s 3. Kepler's constant for the Sun is ('s = 3.4 x 10" m'/s'. The average period of orbit for Earth is 365.26 d. Th average radius of Earth's orbit is a. 7.7 x 10 km d. 15 x 10 m b. 3.4 x 10 m e. 5.8 x 10 9 m C. 1.8 x 10" m 4. A uniform electric field has a strength of 150 N/C, A charge of 1.20 C is placed in the field. How much wor does the field do on the charge in moving it 0.500 m? a. The charge does work on the field