Question

part 1 - definitions (25 pts): please match the following 25 words to their correct definition. place the number of the matching definition in front of the word.
weight phase buoyant zero __calorie
archimedes torque virtual speed __real
pressure circuit energy kinetic __liquid
heat volume resistance current __lever - arm
free - fall vector frequency force __temperature

1. this principle says that the buoyant force is equal to the weight of the displaced fluid.
2. what is the net torque acting on an object in rotational equilibrium?
3. rate at which distance is covered.
4. the measure of the tendency of a force to cause a rotational change.
5. force per unit area.
6. energy transferred between two objects because they have different temperatures.
7. the state an object is in when gravity is the only force acting on it.
8. when heat flows into an object, either the temperature will change or this will change.
9. this type of force is exerted by a fluid on an object wholly or partially submerged in the fluid.
10. a closed path for current to flow that contains a power source and an electrical device.
11. this type of image can only be seen by looking into an optic.
12. the amount of space an object occupies.
13. in the absence of nuclear processes, this quantity is conserved.
14. a measure of an object’s opposition to current.
15. according to newton’s 3rd law, this quantity always comes in pairs.
16. a measure of how hot or cold something is.
17. the amount of energy required to raise the temperature of 1 g of water 1 degree celsius.
18. how often something occurs.
19. the distance from the rotational axis to where the force is applied.
20. this type of image can be projected.
21. the rate of flow of charge.
22. this type of energy is due to motion.
23. phase of matter that is incompressible and has a definite boundary.
24. a quantity that has magnitude and direction.
25. the magnitude of the gravitational force.

Explanation:

To solve this matching problem, we analyze each term and its corresponding definition:

1. Weight: Defined by the magnitude of the gravitational force (25).
2. Phase: The state an object is in (8).
3. Buoyant: The force exerted by a fluid on a submerged object (9).
4. Zero: The net torque in rotational equilibrium (2).
5. Calorie: Energy to raise 1g water 1°C (17).
6. Archimedes: His principle (1).
7. Torque: Tendency to cause rotational change (4).
8. Virtual: Image seen only by looking (11).
9. Speed: Rate of distance covered (3).
10. Real: Projectable image (20).
11. Pressure: Force per unit area (5).
12. Circuit: Closed path for current (10).
13. Energy: Conserved (13).
14. Resistance: Opposition to current (14).
15. Current: Rate of charge flow (22).
16. Lever - arm: Distance from rotational axis (19).
17. Free - fall: Only gravity acts (7).
18. Vector: Quantity with magnitude and direction (24).
19. Frequency: How often something occurs (18).
20. Force: Comes in pairs (15).
21. Temperature: How hot or cold (16).
22. Heat: Energy transfer due to temperature difference (6).
23. Volume: Space an object occupies (12).
24. Kinetic: Energy due to motion (21).
25. Liquid: Incompressible, definite boundary (23).

Answer:

• Weight: 25
• Phase: 8
• Buoyant: 9
• Zero: 2
• Calorie: 17
• Archimedes: 1
• Torque: 4
• Virtual: 11
• Speed: 3
• Real: 20
• Pressure: 5
• Circuit: 10
• Energy: 13
• Kinetic: 21
• Liquid: 23
• Heat: 6
• Volume: 12
• Resistance: 14
• Current: 22
• Lever - arm: 19
• Free - fall: 7
• Vector: 24
• Frequency: 18
• Force: 15
• Temperature: 16