物理
运动学、受力分析、电学与方程推导。
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4. develop a model of what happens when the laser hits the beam splitte…
A model can be a simple diagram with an incident laser beam, a reflected beam, and a transmitted beam. The incident beam hits the beam - splitter. The reflected beam bounces off a…
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what is the difference between an independent and a dependent variable …
What is the difference between an independent and a dependent variable in an experiment? An independent variable is manipulated and causes change, a dependent variable is measured…
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make the connection: your heart is dependent on oxygen from your respir…
D. circulatory system
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suppose that a nation has a labor force of 100 people. in january, amy,…
a. 4.00 b. 3.00 c. 3.00
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a football player gets tackled during the game, which of the following …
A. skeletal system
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which statement explains the role of rovers in space exploration? run t…
run tests on soil and rock samples
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oxygen is taken into the body from the environment, and carbon dioxide …
D. respiratory system
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match the vocabulary word to its definition. explanation that uses the …
1. 6. theory 2. 2. correlation 3. 1. causation 4. 4. peer review 5. 5. testable 6. 6. theory 7. 7. data
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interactions between systems quick check blood is taken to the lungs to…
C. arteries
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which statement describes a characteristic of a spiral galaxy? it is sh…
It is shaped like a pinwheel.
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2. what type of waves are light waves?its a transverse wave 3. develop …
For the laser - mirrored surface model: Draw a ray of light (laser) hitting a mirror with an incident ray, normal, and reflected ray labeled. Explanation: Reflection occurs where …
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question 10 (2 points) if no other person can replicate a scientists re…
Question 10: False Question 11: What is the age of our planet?
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in 1998, scientists discovered that the expansion of the universe has b…
A. dark energy
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what causes a star to shine brightly? o the color that is produced o th…
the energy that is released
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which technology can observe electromagnetic radiation and avoid light …
space observatory
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at a track meet the officials use a timer to determine the amount of ti…
1. False 2. False
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question 6 8 pts which of the following metals provide an example of me…
All of the above (aluminum, stainless steel, magnesium, titanium)
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which two characteristics are used to classify stars on the hertzsprung…
temperature and absolute brightness
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match the part of the experiment with the step in the scientific method…
- I think the car will take 60 seconds to reach the end of the track: 2. Create a hypothesis - Race cars can travel up to 120 mph according to the book: 6. Do some background rese…
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question 1 (2 points) listen this is a scientific question: what is the…
Question 1: True Question 2: A meter is 100 centimeters
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laser maze game http://www.thinkfun.com/play - online/laser - maze/ las…
| Term | Game Piece | Justification | |--|--|--| | Source | Laser | The laser is the source where the light comes from and the pattern starts | | Transmission, Reflection | Beam S…
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what will a medium - mass star become at the very end of its life cycle…
C. a black dwarf
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which statement accurately describes a light - year? it is the shape of…
It is the distance that light travels in a year.
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which of these questions is a good scientific question? how many angels…
What is the age of our planet? peer review
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18. (referring to the last question) calculate the cost at lowes and ho…
Without values for roof area and cost - per - panel, we cannot give a numerical answer. 2. **For question 19**:
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after many experiments and evidence that supports a hypothesis, the hyp…
1. B. theory 2. B. testable
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which is capable of housing astronauts while they conduct research? a r…
C. a space station
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which type of galaxy has arms that contain sites of active star formati…
C. barred spiral
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how did sound technologies affect the film industry? sound technologies…
First question: Hollywood studios tightened their grip on the industry as independent theaters could not afford to buy the new technologies. Second question: Investment in local r…
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what was the primary reason khrushchev objected to the concept of \enem…
The concept allowed Stalin to repress anyone he felt was a threat.
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question 4 (1 point) the scientific method is a linear process. true fa…
Question 4: B. False Question 5: A. True Question 6: B. False
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question 1 (1 point) a theory is just a good guess. true false question…
Question 1: B. False Question 2: B. False Question 3: A. True
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what was the purpose of the apollo program? to put a man in orbit to la…
to put man on the moon
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which object(s) formed last in our solar system? the sun the solar nebu…
the inner planets
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what is a nebula? o the core of a massive star o a cloud of gas and dus…
B. a cloud of gas and dust in space
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how were dubček and nagy similar? they forced russians to offer concess…
They made serious efforts to improve their countries.
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what are two characteristics of a proton? negative electric charge foun…
B. Found in the nucleus, C. Positive electric charge
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what are the two main types of star clusters? binary and wobbling eclip…
D. open and globular
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how was bohr’s atomic model different from those of previous scientists…
B. It showed that electrons could jump from one path to another.
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which type of star system has the most stars? open cluster globular clu…
B. globular cluster
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which atomic model came first? a. thomsons b. daltons c. rutherfords d.…
B. Dalton's
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what can be observed only by observing its effects on gravity? dark mat…
dark matter
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what is released through nuclear fusion in stars? energy gas mass press…
energy
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10. the 1906 san francisco earthquake a) forced the us government to en…
B. helped allow "paper merchants" to enter the US
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which of the following statements describes how the crisis in berlin in…
The blockade was lifted, and Berlin remained divided.
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1. youre a marine scientist studying ocean life. starting at sea level …
- 60; - 75; 50; 25
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what is a warlord? o an army captain who leads troops into battle o the…
a military leader who rules a small area by force
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in what time period did hydroelectric power usage reach its peak? 1970—…
# Explicación: ## Paso 1: Observar la gráfica Observamos la curva de la energía hidroeléctrica (línea azul). ## Paso 2: Identificar el pico Vemos que el pico se alcanza en el perí…
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wind and solar energy are examples of scarce resources. renewable resou…
# Breve explicación: Los recursos renovables son aquellos que se pueden regenerar o reemplazar en un plazo razonable. El viento y la energía solar son fuentes de energía que no se…
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the invasion of normandy was a victory for the german army. axis forces…
D. Allied forces
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read these sentences from a famous speech made by president roosevelt i…
C. the attack on Pearl Harbor
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florida has relatively light winds, so large commercial wind farms are …
advances in technology
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florida has relatively light winds, so large commercial wind farms are …
insufficient wind
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according to the article, which plants and crops have florida initiativ…
algae, citrus, corn, sugarcane, sweet sorghum, trees
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what was the goal of the apollo program? to launch moon missions to sen…
to launch moon missions
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did d - day ultimately end german ambitions in europe? yes, german lead…
No, the Germans continued fighting and attempted offensive measures.
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which renewable energy resources are currently in use in florida and wi…
biofuel, solar, wind
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question 10 (1 point) which of the following is considered a natural ca…
C. Wind erosion
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name lucy force and motion - word search puzzle direction: find all the…
1. Force 2. Newton 3. Dynamometer 4. Balanced Forces 5. Unbalanced Forces 6. Motion 7. Distance 8. Displacement 9. Speed 10. Velocity 11. Inertia 12. Net Force 13. Mass 14. Accele…
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question 8 (1 point) the removal of trees, known as _, exposes soil to …
Question 8 Blank 1: deforestation Question 8 Blank 2: wind & rain Question 9: B. The process by which soil is worn away by wind, water, or other forces
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6. a. using this equation: energy change = plank’s constant (h) x frequ…
a. $4.57\times 10^{14}\text{ Hz}$ b. $656\text{ nm}$ c. A red - colored line.
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which explains why freeing italy and north africa was part of the allie…
It would ultimately ensure victory over German forces.
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select the four adjectives. dont select any articles (a, an, or the). m…
many, recent, other, advanced
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1. when two bones join together and fuse so that no visible separation …
amphiarthrosis
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question 4 (1 point) explain how poor farming practices can lead to soi…
Question 4: Poor farming practices such as over - tilling break soil aggregates, reducing soil porosity and water - holding capacity. Over - grazing removes vegetation cover, leav…
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categorizing renewable vs. nonrenewable resources introduction: sort th…
Renewable resources: forests, water, wind Non - renewable resources: oil, iron, silver
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why was the d - day invasion crucial for the allies europe first strate…
The invasion was key in forcing the Germans to retreat east.
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client interviewing use the information below to answer the question on…
after gaining some tenure within the company
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convert. 1,000 grams = kilograms
1
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qualitative quantitative the amount of shoes in a store the rising temp…
The amount of shoes in a store: Quantitative The rising temperature throughout the week: Quantitative The texture of material: Qualitative The density of liquids: Quantitative The…
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which of these actions did the united states take immediately after the…
Congress declared war on Japan the next day.
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convert. 354 liters = milliliters
354000
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convert. 585 centiliters = milliliters
5850
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which of these actions did the united states take immediately after the…
The US Congress declared war on Japan the next day.
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4. a car traveling at a speed of 30.0 m/s encounters an emergency and c…
4. The time it takes for the car to stop is $7.5\ s$. 5. The final speed of the car is $39.1145\ m/s$.
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convert. 1,000 milliliters = liters
1
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read these sentences from a famous speech made by president roosevelt i…
C. the attack on Pearl Harbor
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which is more, 8 grams or 8,002 milligrams? 8 grams 8,002 milligrams ne…
B. 8,002 milligrams
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which is more, 3 kilograms or 3,001 grams? 3 kilograms 3,001 grams neit…
3,001 grams
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exit ticket how did jefferson reinforce the idea of the social contract…
Jefferson reinforced the social - contract idea in the Declaration of Independence preamble by stating that governments derive their just powers from the consent of the governed. …
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select the correct answer. which statement best reflects the united sta…
C. The United States did not consider the Angolan situation significant to risk conflict with the Soviet Union.
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why were the british able to win the battle of britain? their radar equ…
A. Their radar equipment was effective.
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which is more, 1 gram or 675 milligrams? 1 gram 675 milligrams neither;…
1 gram
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which is more, 1 kilogram or 1,312 grams? 1 kilogram 1,312 grams neithe…
1,312 grams
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exiting traffic that is behind entering traffic should continue to merg…
True
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1. the adult vertebral column is composed of 33 vertebrae, distributed …
1. The adult vertebral column is composed of 33 vertebrae. 2. There are 7 cervical vertebrae, some of them containing a transverse foramen. 3. There are 12 thoracic vertebrae, mos…
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understanding historical texts - quiz - level d where \lamplighters\ ca…
Lamplighters needed special tools to do their job. They used ladders to reach the street lamps. They also had poles with wicks to light the lamps.
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which theme is shared by the two text summaries? being too innocent and…
Being too innocent and trusting can be dangerous.
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quiz #8: chapter 8 5 00:05:14 multiple choice anterior view of the righ…
A. Anterior view of the right femur
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the compositions of three powdered drink mixes are shown in the table b…
60 grams
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#8: chapter 8 what is shown in this picture multiple choice superior vi…
Inferior view of the right clavicle
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13.what was thomas edisons major invention? 14.what material did thomas…
13. The practical incandescent light bulb. 14. Carbonized bamboo. 15. Expansion of the electrical power industry and further innovation in lighting technology, and a major impact …
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at birth, there are about 270 bones and even more form during childhood…
True
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summarize it! after tina and trenton completed research on riyadh, they…
Latitude: Higher latitudes are colder, receive less direct sunlight. Altitude: Higher altitude means colder temperatures due to lower air - pressure. Proximity to water: Areas far…
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saudi arabia, has a desert - like climate, with average temperatures ar…
The climates in the two cities cannot be compared based on the information provided.
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drag and drop the words or phrases that accurately complete the paragra…
1. latitude 2. equator 3. elevation 4. decrease 5. proximity
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quiz #8, chapter 8 7 what is shown in this picture? multiple choice ant…
Anterior view of the left humerus
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lot of precipitation as rainfall. however, as they were researching, th…
The elevation of the mountain peak is higher in the atmosphere, so the temperatures reach below freezing, and precipitation can fall as snow.
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drag and drop the words or phrases that accurately complete the paragra…
1. tropical climate 2. temperate climate 3. polar climate
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choose the incorrect statement regarding the development of the skull f…
The skull reaches about half its adult size by 9 months of age.