Which of the following statements regarding orbits is true?
A. In an orbit, the satellite and the central body are the two foci of the
ellipse.

B. The Sun and a planet are at the two foci of an orbit.

C. The central body is located at one focus of the ellipse describing
the orbit.
D. In an elliptical orbit, there is one focus and the satellite is located
there.

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

Diamond will scratch quartz. true or false

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?