CP Physics Fluid Concepts for Monday test

Fluid Concepts

1.     Find the density in kg/meters cubed  of regular and irregular shaped objects using formulas for volume when given dimensions in centimeter or millimeters.   Ex 50 kg  spherical rock with 200 mm diameter.  Or 10 kg cube 50 cm on each side.  Irregular objects would require displacement in water  data to find volume.  Ex Vol 1 = .000423 m cubed and v2 =  .000560 m cubed  and its mass is 20 kg

2.    Find the weight of an object placed on a raft on water where the dimensions of the raft are known ( ex 3m X 1m X .5 m)   and the depth that you sink in water when loaded is known.  Ex  2.0 cm.

3.    Find a buoyant force of a sunken object given the weight in air and the apparent or net weight in the fluid.

4.  Find the density   of the object in #3 given the density of the fluid and the results from #3.

5.  Find the new velocity of a fluid in a pipe of known diameter after coming from another diameter where the velocity was known.   Ex  1” pipe at 4.0 m/s   to ½ inch diameter pipe.

6.  Find gauge pressure given total pressure and atmospheric pressure

7.  Find the force exerted on a hydraulic lift where the radius of both pistons is known as is the weight of the object to be lifted

8.  Explain the physics of sailing.  Specifically, explain how a sailboat goes forward best when wind blows from the side.  You must explain with diagrams and bernoulli’s principle and vector analysis and explain the relevant parts of the boat  like hull, sail, keel.

9.  Find the depth  in a particular fluid like alcohol or water where the pressure is a multiple of atmospheric.  Ex 20 X atmospheric

Pressure Velocity Check Link

Here is the link

Chemistry Numbered Heads Review Chap 9

1. Form into the designated groups

2. Take out one full sheet of paper per group and list the name of the group at the top. Then list the names of the group members and place numbers next to each name (1, 2, 3…..If four members then write 4 also). It doesn’t matter who gets what number.

3. Hand the paper to the instructor. It will be used for assessment and graded.

4. Begin reviewing/ learning the listed concepts. Make up sample questions related to the concept. Try to imagine what question the teacher will ask. Time is limited; so don’t waste it!

5. Once you understand the concepts yourself locate the group members who do not understand  by assessing them. Do not ask yes or no assessment questions.

Good Assessment. “Sam, could you show me how to do number three on the list?”

Poor Assessment. “Do you guys all know it?”

Now teach them how to answer the questions you have formulated.  

6. When the instructor calls a number randomly (ex. = 3) the three will go to a designated area alone and respond to a similar question. Make sure they have something to write with and a calculator. After they leave begin studying the next set of concepts for the next round.

7. After a short amount of time the person will then return to the group and their answer will be graded by the teacher and given to the entire group as a communal score.

8. The returning group member may be called again so they should receive extra instruction to help get caught up.

9. The scores are added at the end to determine winners. The top three groups receive extra points on the test.

Chapter 9 concepts

1.  Know who loses and who gains electrons, anion  v cation,  and the types of compounds formed  in these combinations.   Also know whether anion or cation is listed first in the name.

2.  Know the names of all 40 polyatomic ions and charges.

3.  Know how to write the formula for a binary ionic compound given the name in stock or prefix system

4.  Know the latin roots for tin, iron and copper and the numeric prefixes 1-10

5.  Know how to write the formula for a binary molecular compound given the name in the  prefix system. 


6.  Be able to write the the name for either ionic or molecular compounds given the formula.

7.  Know how to name acids.  

8.  Know the difference between the laws of definite and multiple proportions including how multiple proportions are used