a. all matter is made up of tiny, invisible particles
b. the particles are always moving
c. particles move faster at higher tempratures
d. particles are smaller at lower pressure
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3.Durring which change of state do atoms or molecules become more ordered?
a. boiling
b. condensation
c. melting
d. sublimation
4. Which of the following describes wat happens as the temprature of a gas balloon increases?
a. the speed of the particles decreases
b. the volume of the gas increases and the speed of the particles increases.
c. the volume decreases
d. the pressure decreases
5. Fluid pressure is always dirrected
a. up
b. down
c. sideways
d. in all dirrections
6. Materials that can flow to fit their containers include
a. gases
b. liquids
c. both a and b
d. none of the above
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7.If an object weighing 50 N displaces a volume of water w/ a weight of 10N, what is the buoyant force on the object?
a. 60 N
b. 50 N
c. 40 N
d. 10 N
8. Compare endothermic and exothermic changes.
9. For each pair of terms, explain the diffrence in meaning.
a. solid/liquid
b. Boyle's Law/ Charles's Law
c. Gay-Lussac's Law/Pascal's Principle
10. Describe 4 states of matter using the terms solid, liquid, gas, and plasma. Describe the behavior of particles in each state.
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11. State the law of conservation of energy %26amp; the law of conservation of mass and explain what happens to energy and mass in a change of state.
12. Describe the buoyant force %26amp; explain how it relates to Archimedes Principle.
13.Explain how fluid pressure is affected by the speed of the fluids by restating Bernoullis Principle
14. Describe how pressure is exerted by fluids
15. Why are liquids used in hydraulic brakes instead of gases
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18.PRESSURE Calculate the area of a 1500N object that exerts a pressure of 500 pa. Then caculate the pressure exerted by the same object over twice that area. Be sure to express your answer in the correct SI unit
19.PRESSURE A box, 1/2 full of books, rests on the ground. The area where the box comes in contact w/ the floor is 1 m to the 2nd power. Thw box weighs 110N. How much pressure is the box exerting on the floor? Express your answer in pascals
20.PASCAL%26quot;S PRINCIPLE 1 of the largest helicopters in the world weighs 1.0 times 10N to the 6th power. If you were to place this helicopter on a large piston of a hydraulic lift, what force would need to be applied to the small piston, w/ an area of 0.7m to the 2nd power in order to lift the helicopter? The area of the large piston is 140m to the 2nd power.
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21. BOYLE's LAW a sample of neon gas occupies a volume of 2.8 L at 1.8 atm. What will its volume be at 1.2 atm?
22. BOYLE's LAW 2.2 L of hydrogen at 6.5 atm pressure is used to fill a balloon at a final pressure of 1.15 atm. What is the final volume?
23. BOYLE's LAW a sample of oxygen gas has a volume of 150 mL whan its pressure is 0.947 atm. If the pressure is increased to 0.987 atm %26amp; the temperature remains constant, what will the new gas volume be?
24. After taking a shower you notice small droplets of water cover the mirror. Explain how this happens, describing where the water comes from and the changes it goes through.
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25. An iceberg is floating, partially submerged, in the ocean. At what part of the iceberg is the water pressure the greatest?
26. Use Boyle's Law to explain why %26quot;bubble wrap%26quot; pops when you squeeze it.
27. Compared w/ an empty ship, will a ship loaded with plastic foam ball's float higher or lowerin the water?
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28. Inside all vacuum cleaners is a high-speed fan. Explain how this fan causes dirt to be picked up by the vacuum cleaner.Reasearch Help?
You call this research help, or copying and pasting your assignment?
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