Help me out with 2 multiple questions!!!!!!!!!!!!!!!!! ASAP please
What is flux in general?
1. A flow of energy, so heat is an example of flux.
2. Flowing matter such as a river or an air current.
3. Flowing energy or flowing matter.
4. An amount of energy or matter passing through an opening of cross sectional area A.
5. amount of energy or matter flowing through an opening of cross sectional area A each second.
Which statements about 'intensity' are correct?
(Think carefully about each statement and select all that apply.)
1. The intensity of light is related to brightness.
2. The intensity of light on a piece of paper does not change when you approach an ordinary light bulb with it.
3. The intensity of sunlight is larger at noon than in the morning because the Sun's power is larger at noon.
4. The intensity of sunlight is larger at the equator than it is at the north pole.
5. The Sun's power is larger at the equator than it is at the north pole.
6. When a flat object such as a thin book is exposed to sunlight, the energy absorbed by the book each second depends on the orientation of the book relative to the Sun's rays.
im doing the physics 100 reading quiz too! for the first one, idk, but for the second one, someone told me that if you choose all the answers you still get it right.
To answer the first question about flux, we need to understand what the term means. Flux, in general, refers to the flow of either energy or matter. It can encompass a variety of phenomena. Now, let's analyze the provided options:
1. A flow of energy, so heat is an example of flux.
- This statement is true. Flux can involve the flow of energy, and heat is an example of energy flux.
2. Flowing matter such as a river or an air current.
- This statement is also true. Flux can involve the flow of matter, such as a river or an air current.
3. Flowing energy or flowing matter.
- This statement is a generalization that encompasses both energy and matter flow. It is also correct.
4. An amount of energy or matter passing through an opening of cross-sectional area A.
- This statement accurately describes the concept of flux. It specifies that flux is related to the amount of energy or matter passing through a specific opening of a certain area.
5. Amount of energy or matter flowing through an opening of cross-sectional area A each second.
- This statement is an extension of the previous one. It emphasizes that flux is the measure of energy or matter that flows through a specific opening per second.
Now, moving on to the second question about "intensity," let's analyze the provided options:
1. The intensity of light is related to brightness.
- This statement is true. Intensity is a measure of the concentration or strength of light, and brightness is directly related to intensity.
2. The intensity of light on a piece of paper does not change when you approach an ordinary light bulb with it.
- This statement is false. As you approach a light bulb, the intensity of light on the nearby surface (in this case, the paper) will increase.
3. The intensity of sunlight is larger at noon than in the morning because the Sun's power is larger at noon.
- This statement is true. The intensity of sunlight is indeed larger at noon due to the Sun's higher power at that time.
4. The intensity of sunlight is larger at the equator than it is at the north pole.
- This statement is true. The intensity of sunlight is typically greater at the equator due to the angle at which the Sun's rays hit the Earth's surface.
5. The Sun's power is larger at the equator than it is at the north pole.
- This statement is also true. The Sun's power is higher at the equator because the rays are more perpendicular to the Earth's surface, resulting in higher intensity.
6. When a flat object such as a thin book is exposed to sunlight, the energy absorbed by the book each second depends on the orientation of the book relative to the Sun's rays.
- This statement is true. The energy absorbed by a flat object, like a book, exposed to sunlight does depend on its orientation relative to the Sun's rays.
To summarize, the correct statements for the second question are: 1, 3, 4, 5, and 6.