物理
运动学、受力分析、电学与方程推导。
-
jim crow law questions 1. what were the limitations on marriage during …
1. Anti-miscegenation laws banned interracial marriage. 2. Enforced segregated, underfunded Black-only hospital facilities. 3. Segregated religious spaces, restricted cross-racial…
-
there is a mathematical relationship between wave speed, wavelength, an…
### Completed Table: | wavelength (ft.) | frequency (Hz) | |-------------------|----------------| | 6 | 3 | | 9 | 2 | | 18 | 1 | ### Completed Sentence: If the wave's wavelength i…
-
another property of transverse waves is wave speed. it is the distance …
Maya creates a wave in the battle rope. The wave has a **frequency** of 3 hertz (cycles per second), a **wavelength** of 6 feet, and a **wave speed** of 18 feet per second.
-
another property of transverse waves is frequency. frequency is the num…
3 Hz
-
this model shows the transverse wave maya creates in one battle rope. m…
For wavelength: 15 feet For amplitude: 1 foot
-
7. what should you do if the chest does not rise during a breath?part 3…
7. Re-tilt the head to re-open the airway and attempt the breath again; if still unsuccessful, begin CPR immediately. PART 3: CHILD CPR (1 year to puberty) 1. Child CPR uses shall…
-
the curvy shapes maya creates in the battle ropes highlight key feature…
- Top left label (pointing to highest wave peak): crest - Top middle label (pointing between two crests): wavelength - Top right label (pointing to dashed line): equilibrium posit…
-
unit exam: editing and proofreading proofreading - structure - your wri…
spelling error
-
unit exam: editing and proofreading- structure - your writing should be…
punctuation error
-
the type of wave that maya creates in each rope is called a transverse …
The transverse wave that Maya creates in a rope travels **horizontally along the rope** and the particles of matter in the rope move **vertically**. This means that the wave and t…
-
a wave is a pattern of motion that carries energy. when a wave travels …
A. The wave carries energy. C. Maya transfers energy to the rope.
-
eli creates longitudinal waves in the spring toy. select the true state…
A. A longitudinal wave carries energy. B. If a longitudinal wave's frequency decreases and its speed stays the same, its wavelength increases. D. In a longitudinal wave, the wave …
-
these models show two different waves eli created in the spring toy. wa…
| | greater for Wave 1 | greater for Wave 2 | equal for both waves | |---|---|---|---| | The amplitude is | | | $\boldsymbol{\bigcirc}$ | | The wavelength is | $\boldsymbol{\bigci…
-
imperialism and wwi test 1. what was the primary reason european powers…
1. b) Technological advances like steamships, quinine medicine, and improved weapons 2. d) Africans had immunity to European diseases, while African diseases killed many Europeans…
-
whenever curtis glanced in brigids direction, she shook her head in dis…
When Curtis flicks his fingers, the shrub gives off a dazzling light. People back away and Brigid worries. She knows that this small hazard can become a "monster," or a threatenin…
-
what did they find when they got to where they were going? the train an…
When they arrived in the Northern destinations, they found: - A transformed landscape: cultivated wheat farms, tidy painted farmhouses, macadam highways, and silos replacing South…
-
the type of wave that eli creates in the spring toy is called a longitu…
- The wave travels from left to right. - The waves and the particles of matter move in parallel directions.
-
eli creates longitudinal waves in the spring toy. select the true state…
- Correct statements: 1. If a longitudinal wave's frequency increases, the energy carried by the wave increases. 2. In a longitudinal wave, the wave and the particles of matter mo…
-
eli moves his hand back and forth slowly, creating a longitudinal wave …
The wavelength of the wave **decreases** and the frequency of the wave **increases**. As a result, the energy of the wave **increases**.
-
eli moves his hand back and forth, creating a longitudinal wave in the …
The **amplitude** of the wave **increases**. As a result, the energy of the wave **increases**.
-
there is a mathematical relationship between wave speed, wavelength, an…
### Completed Table: | wavelength (cm) | frequency (Hz) | |------------------|----------------| | 10 | 3 | | 15 | 2 | | 20 | 1.5 | ### Completed Sentence: If the wave's wavelength…
-
11. why did berlioz want his audience to know details of the story abou…
11. To help the audience understand the symphony's dramatic, autobiographical narrative that shapes its musical structure and emotional tone. 12. - To adapt for a different perfor…
-
another property of longitudinal waves is wave speed. it is the distanc…
Eli creates a wave in the spring toy. The wave has a **frequency** of 3 hertz (cycles per second), a **wavelength** of 10 centimeters, and a **wave speed** of 30 centimeters per s…
-
unit review: editing and proofreadingproofreading- structure - your wri…
lack of variation in sentence structure.
-
another property of longitudinal waves is frequency. just as in transve…
3 Hz
-
unit review: editing and proofreadingediting and proofreading are tools…
grammar
-
indoor air pollution tobacco smoke and formaldehyde are dangerous indoo…
Radon gas
-
another property of a longitudinal wave is amplitude. just as in a tran…
When a wave with **large** amplitude moves through the spring toy, each coil is displaced farther to the right or left. As a result, the coils in a compression are squeezed togeth…
-
kinetic and potential energy worksheet name:_________________________ d…
1. Kinetic; 945 J 2. Potential; 252 J 3. Kinetic; 896000 J 4. Potential; 1580 J 5. Potential; 8550 J 6. Potential; 69552 J 7. 6 J 8. $\approx0.204$ kg 9. a. The 4-kilogram object …
-
possible points: 2 match each property below with correct state(s) of m…
1. Density - Both solids and fluids 2. Viscosity - Fluids only 3. Ductility - Solids only 4. Buoyancy - Both solids and fluids
-
1 multiple choice 1 point what three words were used to define the 1950…
1. Conformity, Prosperity, Consumerism 2. Televisions
-
possible points 1 use the following table to order the materials from h…
3, 1, 4, 2
-
the pattern in the spring toy highlights key features of a longitudinal…
- Top left label (pointing to stretched coils): rarefaction - Top right label (pointing to stretched coils): rarefaction - Bottom label (spanning from one compressed section to th…
-
unit 8 test: properties of matter regular( possible points 1)viscosity …
B. a substance's resistance to flow
-
3 select the correct answer who is this artist? this artist was the fir…
A. Giotto di Bondone
-
a cruise ship made of steels floats in the ocean. which of the followin…
The ship floats because its average density is less than water due to the air inside it
-
what does archimedes principle state?the buoyant force acting on an obj…
A. The buoyant force acting on an object is equal to the weight of the fluid displaced by the object.
-
when poured into water, glycerol (also a liquid) falls to the bottom of…
A. An object that floats in water will always float in glycerol
-
possible points an ice cube melts from solid to liquid. choose which of…
increase its density
-
a wave is a pattern of motion that carries energy. when a wave travels …
- The spring toy is the medium the wave travels through. - Eli transfers energy to the spring toy. - The wave carries energy through the spring toy.
-
a student is given a ball of clay and told to make it float. why does t…
The weight of the water displaced is the same as the weight of the clay.
-
these models show two different waves eli created in the spring toy. se…
The top spring wave model (the first/upper image of the spring toy)
-
unit 8 test: properties of matter regular which of the following would …
Small brass cube, large brass cube
-
possible points: 1 an engineer searching for a material to develop a ne…
B. Low brittleness, high hardness, high elasticity.
-
cenozoic eracomprehension questionsuse your reading passage to answer t…
1. b. Dinosaurs went extinct. 2. Mammals no longer faced competition from large dinosaurs for resources like food and living space, so they evolved larger body sizes to occupy the…
-
these models show two different waves eli created in the spring toy. se…
The lower spring wave model (the second image with the labeled "1m" segment)
-
which is true of $100\\ \\text{cm}^3$ of feathers and $100\\ \\text{cm}…
The feathers are less dense The feathers are less dense because the mass is less
-
which is true of $100\\ \\text{cm}^3$ of feathers and $100\\ \\text{cm}…
The feathers are less dense
-
unit 8 test: properties of matter regular density is the ratio of mass/…
mass/volume
-
2. the first step when the aed arrives: 3. where do you place the aed p…
2. Turn on the AED device. 3. One pad on upper right chest (below collarbone), one pad on lower left chest (below armpit on ribcage). 4. Move away from the person, with no physica…
-
what is the definition of connotation? (1 point)○ the literal meaning o…
the associations attached to a word
-
analyzing word choice: figurative language - instruction - level h dist…
Nadia feels a deep connection to the ocean.
-
according to a survey conducted by a medical research firm, 23% of male…
B) between 62,989 and 67,071
-
george is working on an asbestos removal job and is wondering if he nee…
C. Any class of job which is to be performed in a low-ventilation area.
-
the dimensions of a square pyramid are shown in the diagram.what is the…
Volume of square pyramid: 72 cubic inches Volume of triangular pyramid puzzle: 595 cubic centimeters
-
9. what agreement did the sioux accept in return for peace under the fo…
O that they would not be forced to move to a reservation
-
7. what should you do if the chest does not rise during a breath? part …
1. Reopen the airway, reposition the head, ensure a proper face seal, and retry the breath. If the chest still does not rise, begin CPR as the airway may be obstructed. --- **PART…
-
heat islands and effects creating more sustainable and comfortable urba…
D. increased energy use and pollutant release
-
a puzzle is in the shape of a triangular pyramid with a height of 14 cm…
595 cubic centimeters
-
dioxide from the atmosphere. carbon dioxide lowers hich is harmful to o…
D. Using electrically powered devices instead of those powered by fossil fuels
-
3. what mistake by colonel george custer led to his defeat by chiefs si…
A. Custer and his force arrived ahead of the main U.S. force.
-
answer in complete sentences: 1. why is it important to remove rock lay…
It is important to remove rock layers slowly and carefully when excavating a fossil because fossils are typically fragile and easily damaged; hasty excavation can break, chip, or …
-
2. what was the outcome of the battle of little big horn? ○ chief crazy…
A. Chief Crazy Horse and 2,000 Indians killed Colonel Custer and all of his men.
-
heat islands and effectsboundary layer heat islands start at rooftops a…
B. increased heat-absorbing surfaces
-
1. in which way did the u.s. government try to speed indian assimilatio…
A. They forced them to live on reservations. D. They created boarding schools for Indian children.
-
heat islands and effects what do urban areas often replace vegetation w…
C. concrete and steel
-
heat islands and effects urban environments. what term is used to descr…
positive feedback loop
-
17 how were the representations of the human body by greek and roman ar…
A. They both showed an idealized depiction of the human body.
-
heat islands and effectsvertically up to a mile above the city, forming…
B. It lowers temperatures by absorbing heat.
-
westward expansion independent practice now, in the independent practic…
A. It granted 160-acre farmsteads to Indian families.
-
13. which human activity directly affects the quality of freshwater res…
D. allowing runoff from agricultural fields
-
heat islands and effects what can reduce the urban heat island effect? …
Rooftops covered with plants
-
heat islands and effects which type of heat island is located in the ar…
Canopy heat islands
-
heat islands and effects which type of heat island is present in the ai…
B. Canopy heat islands
-
heat islands and effects which type of heat island has a higher surface…
Surface heat islands
-
guided practice how did the dawes act replace the reservation system? a…
B. It gave each Indian family 160 acres of land.
-
which statement describes most groundwater?groundwater is found in unde…
Groundwater is found in the spaces between rocks, gravel, and sand.
-
heat islands and effects the urban heat island effect can cause increas…
Increased energy use
-
heat islands and effects the urban heat island effect can be caused by …
Fuel combustion
-
heat islands and effects in urban areas, people turn on air conditionin…
Positive
-
guided practice what did chief joseph do for his people after they were…
A. He led his people on a trek from the reservation back to Idaho.
-
the graph shows changes in sea level since 1993. changes in sea level s…
A. Sea level has increased over time.
-
westward expansion guided practice what mistake by colonel george custe…
B. Custer and his force arrived ahead of the main U.S. force. C. Custer and his force were unprepared for the Sioux attack.
-
10. groundwater is the primary source of drinking water for approximate…
A. Washing a car with industrial soap and letting the soap soak into the ground.
-
imperialism: 1. what was the tokugawa shogunate? 2. what was the main r…
1. The Tokugawa Shogunate was a feudal military government that ruled Japan from 1603 to 1868, led by a shogun (military dictator) of the Tokugawa clan, enforcing strict isolation…
-
7. a large city has just experienced an earthquake and the sewage pipes…
The groundwater supply will become polluted as material from the broken pipes flows out.
-
4. if you are seeing a solar eclipse but you are not located in the umb…
A. Sun from Earth (partial solar eclipse view)
-
which term allows a metal to be stretched into a wire? ○ malleable ○ du…
B. Ductile
-
1 which statements correctly explain patterns we see in the earth-sun-m…
B. A lunar eclipse only happens when Earth is directly between the Sun and the Moon. D. The Moon appears to change shape because we see different portions of its sunlit half as it…
-
of britain an2. the treaty of versailles contributed to the rise of ado…
2. B. Imposed heavy reparations and national humiliation on Germany 3. C. Sudetenland 4. B. Divided Eastern Europe into German and Soviet spheres of influence 5. B. Rapid, coordin…
-
which definition best fits the term infectious materials?○ people who a…
any substance that contains germs that can be transferred to from one person to another
-
which of the following is true about bloodborne pathogens? select all t…
- bloodborne pathogens cause Hepatitis B and C - bloodborne pathogens can lead to disease - bloodborne pathogens are bacteria or viruses carried in the blood
-
when should standard precautions be used? ○ assume all individuals have…
assume all blood and/or bodily fluids may contain harmful viruses
-
question: strong earthquakes along the hayward fault near san francisco…
140
-
question: the interaction between s waves and earths surface creates __…
Love
-
select from the drop-down menus to correctly complete the sentence. for…
wistful
-
select from the drop-down menus to correctly complete the sentence. for…
First drop-down menu: stoic
-
6. analyze the photo above of permeable pavement. how does this type of…
It allows precipitation to soak into the ground.
-
10. what is one factor that limited industrial expansion in the south?○…
C. lack of a market for finished goods
-
the following question has two parts. answer part a first, and then par…
Part A: D. People are controlled by forces outside of themselves. Part B: D. The king and queen cannot prevent the prophecy from being fulfilled.