Which of the following explains why the Earth orbits the sun rather than the sun orbiting the Earth?
A. The force of Earth's gravity pulling on the sun has a smaller
magnitude than the force of the sun pulling on the Earth.
B. Even though the sun is pulled toward the Earth, the force is
opposed by forces from the gravity of the other planets.
C. While the Earth is pulled toward the sun with a gravitational force,
the sun is not pulled toward the Earth by a gravitational force.
D. Earth has a much smaller mass, so the gravitational force
accelerates the Earth much more than it accelerates the sun.

After the near spacecraft passed mathilde, on several occasions rocket propellant was expelled to adjust the spacecraft's momentum in order to follow a path that would approach the asteroid eros, the final destination for the mission. after getting close to eros, further small adjustments made the momentum just right to give a circular orbit of radius 45 km (45 × 10^3 m) around the asteroid. so much propellant had been used that the final mass of the spacecraft while in circular orbit around eros was only 545 kg. the spacecraft took 1.04 days to make one complete circular orbit around eros. calculate what the mass of eros must be.

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.