物理
運動學、受力分析、電學與方程推導。
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the pattern in the spring toy highlights key features of a longitudinal…
- Top left label (tightly coiled section): compression - Top right label (stretched section): rarefaction - Bottom label (distance between two compressed sections): wavelength
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3/10 a wave traveling at 2000 m/s has a wavelength of .25m. what is its…
B. 8000hz
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what kind of rain is associated with a warm front? quick thunderstorm s…
Slow steady rain
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what is the wavelength of a sound wave with a frequency of 50hz if the …
D. 7m
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what is the speed of a wave with a frequency of 20hz. and a wavelength …
D. 8m/s
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4/10 what is the wavelength of a wave traveling at 1600m/s and a freque…
B. 4m
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3/10 if a wave is traveling at 60m/s and has a wavelength of 3m. what i…
D. 20Hz
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what is the angle of the slope associated with a warm front? steep grad…
Gradual / Diagonal
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1/10 what is the wavelength of a wave moving at a speed of 112 m/s at a…
A. 8 m
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where is the precipitation associated with a warm front? on the front i…
In front of the front
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14) drag and drop the parenting styles with the statements. these emoti…
These emotionally distant parents set high expectations and do not explain rules. → authoritarian These parents emotionally connect with their children but set few expectations. →…
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why is the cold air below the warm air? the cold air is less dense the …
The cold air is more dense
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which of the following is true concerning the pannes in salt marshes? a…
A. They are isolated pools of water at low elevations.
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27. explain the correlation between broadcast media and advertising. be…
Because of the appeal of broadcast media, advertisers were able to reach their audiences more often.
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which of the following is most negatively affected by fishing practices…
a. deep sea corals
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jessie wears sunglasses at the beach to protect her eyes. how do light …
When light waves interact with the lenses of Jessie's sunglasses, some of the waves are **absorbed** and transfer energy to the lenses. This makes the sunglasses feel a bit **warm…
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summarizing: informational text — instruction — level h also began to b…
C. English is also changed by new and increased uses of familiar words. "Cool" once described only temperature; now it's used to describe mood, music, and people, too.
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echoes are a type of reflection. how could you use the timing and volum…
### Using Timing: 1. Measure the time $t$ (in seconds) between making a sound and hearing the echo. 2. Calculate one-way travel time: $\frac{t}{2}$ 3. Calculate distance to the wa…
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which direction do the triangles point? doesnt matter north the directi…
The direction the front is moving
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the u.s. integrated ocean observing system (ioos) is best described as …
d. all of the above
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what is the map symbol for a cold front?blue line with trianglesred lin…
Blue line with triangles
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sunlight shines on a road. light waves interact with the pavement, and …
Light waves are **transmitted** when they travel through the air from the Sun to the pavement. When the waves interact with the pavement, some are **absorbed** and transfer energy…
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read this example of absorption. zach lives in an apartment building. h…
When sound waves are absorbed by the rug, energy transfers from the **sound waves to the rug**. So, the amplitude of the sound waves that travel into Zach's room **decreases**.
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what is the speed of cold fronts compared to other fronts? faster slowe…
Faster
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a pebble is dropped into a still pond. ripple waves travel outward thro…
transmission
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the sun sets over a lake. some of the light waves bounce off the surfac…
reflection
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marine debris mostly originates from oceangoing ships. please select th…
F
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select the correct text in the passage. which sentence in this paragrap…
When the feudal system succeeded on the local level, kings and emperors used the system on a much larger scale to strengthen their monarchies.
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which environmental problems result from deforestation? check all that …
- diminishing air quality - increased water pollution - erosion of soil - loss of habitats for species - increased rainfall that leads to flooding
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20. how did radio advertising evolve?○ advertisers began losing money o…
C. Consumers moved from talk programs to listening to specific genres of music. The change in consumer interests led to a demand for commercials for each genre. This increased wor…
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match each wave interaction with its description. transmission reflecti…
- reflection: A wave bounces off matter - transmission: A wave passes through matter - absorption: A wave's energy is transferred to matter
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when ocean waves hit a rocky cliff, they bounce off the cliff and chang…
Sam jumps into a pool and creates waves. One wave travels to the pool's edge and bounces back.
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at a cold front, which air pushes into which air? warm into cold cold i…
Cold into warm
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- / 5 pointsthe world bank records the prevalence of hiv in countries a…
0.0012
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5/5 what human activity is mentioned as changing earths natural greenho…
Burning fossil fuels
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which of the following best explains the environmental problems associa…
d. All of the above
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question 7 (multiple choice worth 2 points)(04.02 hc)read the following…
Pathos: he is using emotion to urge the audience of the need to explore space
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4/5 which of the following are examples of greenhouse gases mentioned? …
Carbon Dioxide, Water Vapor, Methane
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what type of weather is associated with a cold front?thunderstormssunny…
Thunderstorms
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ocean waves flatten when they crash on a sandy beach. this is an exampl…
When a wave is absorbed by matter, the energy of the matter **increases** and the energy of the wave **decreases**. As a result, the wave's amplitude **decreases**.
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column a - terms1. democracy2. irrigation3. pax mongolica4. monotheisti…
8. O 9. L 10. (Note: No remaining exact match, but if forced to use available, the closest relevant is tied to cultural spread, but correct standard match is not listed; using the…
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ocean waves travel through water. this is an example of transmission. w…
A. A wave passes through a guitar string. B. A wave moves through a spring toy. D. A sound wave travels through air.
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a wave is a pattern of motion that carries energy. when a wave travels …
As ocean waves travel through water, they carry **energy**. Water is the **medium** that ocean waves travel through.
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where is the precipitation associated with a cold front? way in front o…
Just before/after the front's line
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what is the slope like associated with a cold front? gentle steep rewat…
Steep
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which of the following best explains the current state of the majority …
B. they are currently overfished
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according to the united nations, marine debris is possibly one of the m…
T. True
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why does the warm air get pushed up?the warm air is less densethe warm …
The warm air is less dense
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rewatch question 1 1/5 what is the primary role of the greenhouse effec…
To keep Earth at a comfortable temperature for living things.
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it is best to say that marine debris _______. a. is a hazard to marine …
d. all of the above
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cengage webassign - 2020-sp-math-1401-co3 elementary statistics section…
The correct graph is the bottom-right one, where the probability $P(X=x)$ starts highest at $x=1$ and decreases steadily as $x$ increases.
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what is the air like in the maritime tropical air mass?hot and wethot a…
Hot and wet
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marine debris typically ________ a. sickens, injures, or kills marine a…
a. sickens, injures, or kills marine animals
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what is the air like in a continental polar?hot and drycold and wetcold…
Cold and dry
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the current responsible for holding the great pacific garbage patch tog…
a. the North Pacific Gyre
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it has been estimated that only about 13% of california residents have …
0.0005
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describe the sources of marine debris and explain why it is a problem w…
### Sources of Marine Debris: 1. **Land-based (≈80% of total)**: - Coastal and urban litter (plastic bags, food containers) - Stormwater-borne urban/agricultural waste - Industria…
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seafood watch recommends which seafood ______. a. to buy or avoid b. to…
a. to buy or avoid
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⑭ $7\\ \\text{kg}\\ 200\\ \\text{g} = \\underline{\\quad\\quad\\quad}\\…
14. $7000\ \text{g} + 200\ \text{g} = 7200\ \text{g}$ 15. $1000\ \text{g} + 800\ \text{g} = 1\ \text{kg}\ 800\ \text{g}$ 16. $6000\ \text{g} + 600\ \text{g} = 6\ \text{kg}\ 600\ \…
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translate the excerpt below into a confidence interval for p and approx…
The confidence interval for the proportion $p$ is $(0.312, 0.332)$ The level of confidence $c$ is 0.95 (or 95%)
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9. a small unit of matter is ____________10. during boiling and _______…
9. an atom 10. evaporation 11. temperature (or mass/specific heat capacity) 12. isolated 13. slow down (or move less vigorously) 14. conduction 15. vaporization
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draw lines to connect the digital clocks to the clockfaces with the sam…
- 8:45 (yellow digital clock) → Pink square analog clock - 7:35 (blue digital clock) → Light blue round analog clock - 12:10 (yellow digital clock) → Green analog clock - 2:20 (re…
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3. write the name of the wave behavior shown in each image. magnifying …
### For Question 3: - Magnifying Glass: Refraction - Rainbow: Refraction (and dispersion, linked to refraction/absorption) - Radio: Diffraction - Mirror: Reflection ### For Questi…
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inicialmente, estamos a 20 metros y medimos $i1= 7.0 \\times 10^{-4}$ w…
$2.8 \times 10^{-5}\ \text{Watt/m}^2$
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name: _______________ class: 3rdlesson 3: thermal energydirections: use…
1. low amounts 2. conduction 3. mass 4. distance; speed 5. thermal expansion 6. position 7. thermal insulator 8. radiation
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explain how seafood watch promotes environmentally responsible fishing …
Seafood Watch promotes environmentally responsible fishing practices through the following key actions: 1. Develops science-based, tiered seafood ratings (Best Choice, Good Altern…
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name______soil materialssoil can contain humus, clay, silt,rock or sand…
- Humus is decayed matter in **soil**. It contains lots of **nutrients** from former living things. - Clay contains tiny particles of soil that hold **water** well and has some nu…
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directions: study the graphs, read each question, and choose the best a…
16. D. a nationwide drought 17. C. Profits declined from previous years. 18. A. were the lowest in a five-year span. 19. D. 2013 and 2014.
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explain how a policy strategy to reduce, reuse, and recycle might mitig…
A reduce, reuse, recycle (3R) policy strategy mitigates marine debris impacts through three key pathways: 1. **Reduce**: Policies restricting single-use plastic production, bannin…
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1. draw a line to match each term to the proper definition. angle of in…
### 1. Matching Answers: - Angle of Incidence → The angle at which a wave approaches a surface in relation to a perpendicular line from the surface. - Absorption → When a wave's e…
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explain why the biodegradation of plastic might be more hazardous to th…
The biodegradation of plastic creates microplastics, which enter the marine food web and accumulate through trophic levels, harming a wide range of organisms. Additionally, the br…
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directions: study the pictograph, read each question, and choose the be…
6. B. the approval of a federal budget that produces a surplus dedicated to paying money owed to other nations 7. C. The national debt level has continued to rise since 1980. 8. D…
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unit 4 reviewdirections: study the information and table,read each ques…
1. C. The purchasing power of U.S. consumers grew increasingly weak during the early 1930s. 2. A. Unemployment in the United States would gradually decrease. 3. C. inflation 4. D.…
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explain why bottom trawling is still being practiced when it is general…
Bottom trawling persists despite its destructive reputation due to four key factors: 1. **Strong economic incentives**: It yields large, profitable catches quickly, supporting fis…
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it has been estimated that only about 15% of california residents have …
The number of California residents surveyed until a resident who does not have adequate earthquake supplies is found
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by-catch is a term for that part of the catch ______. a. that is used t…
d. that was not actually being fished for
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40) reese needs a new bike mirror. her old mirror was a rectangle with …
Reese should buy the circular bike mirror with a radius of 4 cm.
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which of the following best explains why overfishing is considered a ba…
a. Overfishing is not sustainable and ultimately depletes a fishery.
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commemorating the jewish people as \people of the book,\whitereads reve…
1. This memorial depicts 60 pairs of rusted iron shoes placed along the edge of the Danube River bank. The shoes are of various styles, matching those of victims, and have a weath…
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a group of tibetan monks create a sand mandala at an art museum. the ma…
$0.785$ m²
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1. suppose the position vector for a particle is given as a function of…
(a) $\vec{v}_{\text{avg}} = 1.00\hat{\textbf{i}} + 0.75\hat{\textbf{j}}\ \text{m/s}$ (b) Velocity: $\vec{v}(2) = 1.00\hat{\textbf{i}} + 0.50\hat{\textbf{j}}\ \text{m/s}$; Speed: $…
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4. you are given $q_{40}=0.02$, $q_{41}=0.03$, and $q_{42}=0.04$.(a) un…
(a)(i) $\boldsymbol{0.0641}$ (a)(ii) $\boldsymbol{1.4763}$ (a)(iii) $\boldsymbol{1.4603}$ (b) $\boldsymbol{2.4258}$ (c) $\boldsymbol{0.0568}$ (d) $\boldsymbol{0.0191}$
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what type of agriculture? * 1 point pastoral nomadism shifting cultivat…
Pastoral Nomadism
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1 where does most of the evaporation in the water cycle take place? a o…
C. over the ocean
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the administration team compiled test results for those who had been te…
$\frac{8}{54}$ (corresponding to the third option)
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(a) find the following side lengths for the net. $a = 9$ yd $b = 2$ yd …
(a) $A=9$ yd, $B=2$ yd, $C=5$ yd, $D=5$ yd (b) $146$ yd²
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united states kenya indonesia france brazil canada democratic republic …
Fill-in-the-blanks: 1. concentrated 2. latitude 3. atmosphere 4. absorbs 5. cooler Think About It: This is because temperature decreases as altitude increases. Mount Kilimanjaro's…
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4. a person who has a mass of 65 kg goes on the sky tower ride at an am…
$30.9\ \text{m}$ (rounded to one decimal place)
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directions: create a bohr model of an atom by dragging each subatomic p…
1. Nucleus (central blue circle): 10 blue protons + 10 red neutrons 2. Innermost electron ring: 2 green electrons 3. Middle (outer) electron ring: 8 green electrons
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12. atomic radius generally increases when you move ______ in a group. …
B. down
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question 24 (1 point)according to the reading, which of the following i…
Question 24: d. The battle stopped the Germans from crossing the Marne River and taking Paris Question 25: a. The United States approved the Treaty of Versailles and joined the Le…
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10. to work in the field of it you must possess: a) management skills o…
c) thorough computer knowledge such as hard drives, operating systems, and software development
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question 23 (2 points)according to your reading, president woodrow wils…
Question 23: e. "He kept us out of the war." Question 24: d. This battle stopped the Germans from crossing the Marne River and taking Paris.
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the image below would likely have been created by... a the orwell commi…
1. c. The Committee for Public Information 2. b. Increased government control and regulation
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b. what effect do these homeric similes create? 9. a. what aspects of a…
8b. Homeric similes create a vivid, relatable context for epic events, slow the narrative to highlight key moments, and deepen the emotional weight of characters' struggles by lin…
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question 4 (2 points) according to the reading, the force sent to europ…
c. The American Expeditionary Force
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5. according to ohms law, what must increase if resistance is decreased…
current
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4. what happens to the current in a circuit if the voltage increases, b…
Current will increase.
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steven slides down a fire pole. steven weighs 1,000 newtons. the fricti…
increases
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3. what is voltage?the amount of electrical energy consumed during work…
the difference in electrical potential energy between two points