Fill in the blanks (worth alot of points!!) and dont just answer based off of guessing to get free points XD. 1 .The basic building blocks of matter are called
2. Ais a substance that is made up of a single kind of atom.
3. Elements and compounds are two types of
4. Ais a combination of substances that are combined physically but not chemically.
5. What kind of mixture is a solution? A suspension? A colloid?
6. Fish give off the compound ammonia, which has a pH above 7. To which class of compounds does ammonia belong?

Askydiver weighing 140 lb (including equipment) falls vertically downward from an altitude of 19,000 ft and opens the parachute after 18 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.55|v| when the parachute is closed and is of magnitude 14|v| when the parachute is open, where the velocity v is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. (a) find the speed of the skydiver when the parachute opens. (b) find the distance fallen before the parachute opens. (c) what is the limiting velocity vl after the parachute opens? (d) determine how long the sky diver is in the air after the parachute opens. (e) plot the graph of velocity versus time from the beginning of the fall until the skydiver reaches the ground.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Determine the moment of the force f about an axis extending between a and c. express the result as a cartesian vector. a is at the origin, c is at (4,3,0) and f = (4i + 12j -3k) lb coming out of b (4,3,-2).