Nicotine a. is a central nervous system depressant. b. stimulates the heart and increases respiration. c. increases hunger signals. d. is not easy to develop a tolerance to.

Apossible explanation for a set of facts that can be tested by further investigation is called

In one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.