Acat started at a distance of 5.4 m away from your front door and began walking directly away from it. 2 minutes later, the cat was 9.3 m from your door. if d is the distance of the cat from the door, what is (delta)d
a. 3.9
b. 9.3
c. 5.4
d. 2

Choose a synonym for the underlined homonym (a word with two or more meanings). i did not expect the boat to rock so much. a. boulder c. astound b. sway d. shock

What will a positive and a negative charge do if they are separated from each other?

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?