Which of the following statements regarding orbits is true? A. The Sun and a planet are at the two foci of an orbit.
B. In an orbit, the satellite and the central body are the two foci of the
ellipse.
C. In an elliptical orbit, there is one focus and the satellite is located
there.
D. The central body is located at one focus of the ellipse describing
the orbit
SUBMIT

Aspring with a mass of 2 kg has a damping constant 14 kg/s. a force of 3.6 n is required to keep the spring stretched 0.3 m beyond its natural length. the spring is stretched 0.6 m beyond its natural length and then released. find the position of the mass at any time t. (assume that movement to the right is the positive x-direction and the spring is attached to a wall at the left end.)

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?