At a given instant, the geocentric equatorial position vector of an earth satellite is r1 ¼ 3600^i þ 4600^j þ 3600^k ðkmþ thirty minutes later, the position is r2 ¼ 5500^i þ 6240^j 5200^k ðkmþ find the specific energy of the orbit.

A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)