# Get Solved Liberty University PHYS 101 Quiz 4

## Get Solved Liberty University PHYS 101 Quiz 4

1. How many elements have been identified?
2. Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. Area A1 is 1 square inch, and area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown.
3. The hydraulic system in modern aircraft is an example of:
4. If the same-sized force is made to act over a smaller area, the pressure is
5. A person weighing 200 pounds stands on snowshoes. If the area of each snowshoe is 400 square inches, the pressure on the snow is
6. The gauge pressure of the water in a swimming pool at 10 ft is the gauge pressure of the water at 5 ft.
7. If the outside air pressure decreases, the reading on a tire gauge connected to a tire
8. The absolute pressure is
9. A solid object labeled A weighs more than another solid object labeled B. Which of the following is true?
10. The pressure at the bottom of aquarium A is greater than that at the bottom of aquarium B. Why might this be?
11. A plasma state of matter is
12. The positively charged particle inside an atom is
13. The cabin pressure of a passenger jet cruising at a high altitude (30,000 ft) is about 1 atm. and the pressure outside is about 0.3 atm. What is the outward force on a window measuring 1 foot by 1 foot?
14. You press a stick that has a varying cross-sectional area horizontally between the palms of your hands. The area of the stick pushing against your left palm is twice the area of the stick pushing against your right palm.
15. When a 4-cubic-ft block of wood floats in a fluid whose weight density is 60 pounds per cubic foot, 3/4 of the block’s volume is submerged. The buoyant force on the block is
16. In a flowing fluid, the pressure where the fluid is moving slower is higher than the pressure where the fluid is moving faster.
17. If the volume of a container is decreased while the mass and temperature of the gas inside it stay constant, the pressure will increase.
18. The buoyant force that keeps a ship afloat is an example of Pascal’s principle.
19. When a 4-cubic-ft block of wood floats in a fluid whose weight density is 60 pounds per cubic foot, 3/4 of the block’s volume is submerged. The buoyant force on the block is 60 pounds.
20. A person weighing 200 pounds stands on snowshoes. If the area of each snowshoe is 400 square inches, the pressure on the snow is 0.25 psi.
21. Air can be compressed easily because there is a great deal of empty space between air molecules.
22. The central core inside an atom is the neutron.
23. Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. Area A1 is 1 square inch, and area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown.
24. Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. Area A1 is 1 square inch, and area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown.
25. The four states of matter are solid, fluid, gas, and plasma.
26. Select the closest matching pairs possible. 3 pts for each response.

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