物理
運動學、受力分析、電學與方程推導。
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3. a 2 kg ball hits a surface with a speed of 5 m/s and bounces back wi…
The momentum change of the ball is \(\boldsymbol{-15 \, \text{kg·m/s}}\) (or a magnitude of \(15 \, \text{kg·m/s}\) in the direction opposite to the initial velocity).
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lesson 2.03 (2.03 checkpoint) please complete this study guide while at…
Urbanization ### Question 2 (Filling the blank)
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base your answers to questions 11 and 12 on the image below and on your…
11. 1. More Native American Indians on the Great Plains were forced onto reservations. 12. 4. giving public land to railroad companies to help finance railroad construction
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4. read the paragraphs from the story. mama stood up and clicked togeth…
D. It helps Cora better understand the war. ### Question 5
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after asking a question, a scientist can form a(n) , which is an idea t…
hypothesis
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watch the video clip \married life\ from the movie up (2009). answer th…
1. C. Love includes both joy and loss 2. B. It forces viewers to rely on visuals and music 3. B. Changes in Carl and Ellie's physical appearance 4. C. Shared dreams and unfulfille…
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which best describes scientific facts? observable and objective true an…
observable and objective
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1) what is the third country following the path of australia and france…
1. The United Kingdom 2. Acoustic Vehicle Alerting System (AVAS) (low-speed pedestrian warning sound)
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the ____________ of a polynomial can help us predict and model real - w…
1. **graph** 2. **binomial** 3. **trinomial** 4. **derivative** 5. **simplification**
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science is the systematic study of life nature earth beliefs
nature
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to help prevent people from getting the ebola virus, countries around t…
ethics
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which best describes why it is important for a scientist to use the met…
so the data can be shared and understood around the world
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dropping balls reggie has three different types of balls. each ball is …
D: All three balls will hit the floor at about the same time.
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after scientists use a careful process to gather evidence and establish…
determining explanations
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which best explains how and why scientific knowledge is continually exp…
The scientific process is cyclical so that new facts inspire questions that lead to new studies.
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fill in the blank with the correct term learned from your study of this…
square bend (or 90 - degree bend) ### 2.
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the height of an arrow shot upward can be given by the formula $s = v_0…
0.55 s and 5.45 s
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2. an object of mass 5 kg is moving on a smooth surface with a velocity…
The applied force is \( -30 \, \text{N} \) (or 30 N to the left).
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the height of an arrow shot upward can be given by the formula $s = v_0…
$16(t - 3)^2 = 96$ (or equivalent form $16(t - 3)^2 - 96 = 0$)
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how much does a standard 100 pvc conduit expand when subjected to a tem…
B. 2.2"
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which of the following tools is required to perform the next step after…
D. deburring tool
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a 1\ trade size rmc conduit has an outside diameter of______. a. 1.163\…
D. 1.315"
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if the diameter of the pipe obstruction is 2\, then making a 3 - point …
B. 3/4"
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a words connotation is its dictionary definition its translation into a…
the feelings or emotions associated the word
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a words denotation is its correct spelling the emotion associated with …
D. The dictionary definition of the word
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which of these does not reflect what \connotation\ means? the way a wor…
the most literal meaning of a word
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an aquarium tank that measures 2.4 m high, 6 m long, and 1.5 m wide is …
D. 21,600 kg
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attenuation is the ____ in a tuned circuit. decrease in signal amplitud…
A. decrease in signal amplitude or intensity
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bandwidth is the band of frequencies above and below resonance in which…
True
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an acceptor circuit provides minimal response to current at resonant fr…
False
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to create a voltage drop consisting of just the dc voltage of a signal …
capacitor with a reactance of one - tenth the resistor’s value
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the temperature yesterday in perrysburg, ohio, was $-6^circ$f. the temp…
D. $0^\circ\text{F}$
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the band - pass filter accepts currents near its resonant frequency. tr…
True
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the band-pass filter accepts currents near its resonant frequency. true…
True
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a circuit with a 15 ω resistor, a 1.45 h inductor, and a frequency of 3…
20
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1. what is energy, and how is it related to the ability to do work or c…
1. Energy is the capacity of a system or object to perform actions. It is directly tied to doing work (applying force to move an object) or causing change (like altering an object…
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the resonant frequency for a parallel rcl circuit with a 9 pf capacitor…
750
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at resonant frequency, the voltage lags the current. true false
False
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virginia science sol 5.2 – energy transformations 1. what is energy, an…
Energy is the capacity of a system or object to carry out actions or make alterations. It is directly tied to the ability to do work or cause change: having energy means an object…
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under president johnsons lenient plan for reconstruction, many southern…
- Texas: Only white people were allowed to serve on juries, hold office, or vote. → to prevent freed people from fully and equally participating in government - South Carolina: Bl…
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please fill in the blank below. ram interacts with software by storing …
temporary
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please fill in the blank below. it teams can enforce software installat…
settings
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what is the lowest temperature and at what time did it occur? a. 5°f at…
C. $15^\circ\text{F}$ at 3:00 a.m.
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please fill in the blank below. input answer storage combines hdd capac…
Hybrid
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what is the lowest temperature and at what time did it occur? a. $5^{ci…
C. 15°F at 2:00 a.m.
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thirteenth amendment section 1. neither slavery nor involuntary servitu…
The United States banned the institution of slavery, except as punishment for a crime.
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in texas, only white people were allowed to serve on juries, hold offic…
- They kept freed people in the same jobs they were forced to do under slavery. - They limited the social equality of freed people in everyday life and personal relationships. - T…
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please fill in the blank below. windows 11 can be installed using the m…
Upgrade (or "in-place upgrade")
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# 1- together we win 1. describe each man in the picture. who do these …
- First man: Wears blue sailor uniform, represents a sailor (navy). - Second man: In work overalls with a tool, represents a civilian laborer (factory/workforce). - Third man: In …
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extended response: complete the items below on this answer document. re…
(for Part C): The velocity of the car from 0 - 3 seconds is $\boldsymbol{2\space m/s}$. (Note: For Parts A and B, the answer involves drawing, but the steps explain how to constru…
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c) if the energy is used to launch a 5 kg block into the air, how high …
$\approx 20.41$ meters --- Now addressing question 3):
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direct and indirect sunlight the sun is the closest star to earth, and …
Since no specific question is provided about this text, it's not possible to give a targeted answer. If you have a question such as asking to summarize the text, explain a concept…
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direct and indirect sunlight the sun is the closest star to earth, and …
The Sun gives us light and heat. ### Question 2
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drag the right word to its definition an italian astronomer and physici…
Galileo Galilei
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which research question would lead to the most information about baseba…
A. What are the rules for baseball?
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who is credited with the discovery of the electron? j.j. thomson john d…
A. J.J. Thomson
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what did thomson believe about the atom? they are positively charged pa…
the option with the text "they are negatively charged particles randomly scattered throughout a positively charged sphere" (the second option in the given choices)
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multiple-choice question plum pudding consists of pieces of fruit (rais…
the randomly scattered electrons
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multiple-choice question what did rutherford predict would happen to th…
A. he predicted that all of the alpha particles would pass straight through the atom (assuming the first option is labeled A and the second as B)
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which example shows interaction between the biosphere and the geosphere…
Plant roots breaking apart rocks
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multiple-choice question why did rutherford propose that there was a sm…
A. because some of the alpha particles bounced/deflected off of the atoms at angles
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which of the following best describes how earth’s systems interact? (1 …
Changes in one system can affect the others
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what are rutherfords major contributions to our understanding of the at…
- an atom is mostly empty space - there is a positively charged nucleus in the center of an atom
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multiple-choice question select the correct description of bohrs \plane…
B. electrons orbiting on energy levels around the nucleus
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which system includes clouds, oxygen, and carbon dioxide? (1 point) geo…
Atmosphere
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multiple choice question what is an orbital? a fixed/defined energy lev…
The correct option is: a region of space where an electron is likely to be found
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which of the following best describes the geosphere? (1 point) the soli…
The solid parts of Earth like rocks and landforms
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what do each of the pink dots represent in schrodingers \electron cloud…
A. each dot is a possible location where one electron might be
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how can we continue to expand on our understanding of the natural world…
- ask questions - conduct experiments
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11.5 measure objects using different length units learning target: meas…
centimeters ### Question 10
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11.5 measure objects using different length units learning target: meas…
centimeters ### Question 10
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construct a cer for the following prompt. plastic straws did you know t…
### Claim: As the number of plastic straws entering the ocean increases, the number of marine animals hurt also increases. ### Evidence: - In 2006, 1 million straws entered the oc…
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question #13 the diagram shows the effect of solar energy on both land …
C. Water needs to absorb a lot of solar energy to warm up.
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question #9 what global winds influence the temperatures in the tempera…
D. westerly winds
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question #11 a science teacher draws a map with three imaginary hurrica…
C. hurricanes X and Y
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question #12 what part of the earth do trade winds impact? a the entire…
D. areas near the equator
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what is the name for the winds indicated by the arrows? a easterlies b …
C. trade winds
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question #7 examine the diagram of the water cycle. what process is rep…
D. precipitation
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question #9 the image describes two pressure regions. | region 1 | low …
D. Region 1 will have stormy weather, and Region 2 will have fair weather.
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based on the pie chart, which is the largest reservoir of freshwater? a…
A. glaciers
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question #5 the diagram shows the location of earths equator. which sta…
D. There is zero Coriolis Effect at the equator which prevents the rotation of air
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question 46 the earth is shown in simplified form with the black line r…
C. <Diagram with arrow aligned directly along the Equator line pointing into the circle>
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question #3 the average monthly temperatures and precipitation data fro…
D. (Graph with Precipitation on the vertical axis and Months on the horizontal axis)
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question #2 which diagram represents the convection currents that form …
A. [Diagram with moon, surface wind from land to water, upper wind from water to land]
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name: isaiah.n class: date: question #1 where would most of the freshwa…
A. glaciers and icebergs
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grace created the model below, showing the colors in the visible light …
A. white
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summarize it! drag and drop the words or phrases that accurately comple…
1. electromagnetic spectrum 2. frequency 3. visible light 4. seven 5. white
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practice it! all of the following statements about white light are corr…
C. When colors are focused into a prism, it creates white light.
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select the statement(s) that accurately describe the relationship betwe…
B. The more energy a wave has, the higher the frequency will be, E. The more energy a wave has, the shorter the wavelength will be
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drag and drop the words or phrases that accurately complete the paragra…
To solve this, we analyze the electromagnetic spectrum concepts: 1. The first blank relates to how radiant energy is ordered on the spectrum. The two key properties of electromagn…
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summarize it! drag and drop the words or phrases that accurately comple…
1. energy 2. energy 3. shorter 4. shorter 5. visible light
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practice it! which of the following accurately identifies which types o…
- Gamma rays have the most amount of energy. - Radio waves have the least amount of energy. - The red portion of the visible spectrum has less energy than the violet portion.
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practice it! all the following are correct about the visible light port…
Violet has the longest wavelength and the highest frequency waves.
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practice it! drag and drop the words or phrases that most accurately la…
- Leftmost blank: gamma ray - Middle blank (between X - ray and Visible): ultraviolet - Rightmost blank (between Infrared and Radio): microwave
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in new york city, electric scooters are available to rent. the graph be…
The graph represents a function showing the total cost of renting the scooter over time. There is a $1 fee to unlock the scooter, and then it costs $0.30 per minute after that.
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which statement primarily appeals to pathos, or emotion, to support the…
The statement "Howard Hughes was one of the wealthiest men in the world, but he suffered greatly from mental and physical health problems that his money couldn't fix."
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communications satellites use microwaves instead of radio waves because…
A. microwaves travel more easily through the atmosphere than radio waves
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which type of electromagnetic wave is most commonly used for television…
Radio waves
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a(n) select answer television remote control frequency and receives rad…
transceiver
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the global positioning system is a system of satellites, ground monitor…
provide information about the receiver's exact location at or above Earth's surface