物理
运动学、受力分析、电学与方程推导。
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research activity - climate zones choose 2 countries that you are inter…
| Questions | Country 1 (Canada) | Country 2 (Brazil) | | --- | --- | --- | | 2) Which climate zone is the country in? | Sub - arctic, tundra (north), temperate (south) | Tropical…
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7. answer the following questions regarding a h atom in which an electr…
$4.08\times 10^{-19}\text{ J}$
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shane wants to compare the amount of rainfall each month during a 4 - m…
A. Month, Rainfall (cm): August - 35, September - 22, October - 13, November - 3
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which of the following is a valid criticism of investigation d? an obse…
An observational study needs a control group.
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sept 30th 2025 exam - grph trends, dimen anal, velocity accel 7 of 10 c…
1.11 kg/min
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these investigations are observational studies. pick a valid criticism …
They both lack a control group.
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getting daily activity in can be beneficial to your health. (5 points) …
True
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investigations c and d use existing smokers rather than making new ones…
Investigations C and D are observational studies.
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score: 6/30 answered: 1/4 question 2 a persons systolic blood pressure,…
A. 129.6 mm Hg B. 44 years old
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1.15. arianna and her classmates take water samples from the same nearb…
A. same measuring tool and same volume of water
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research activity - climate zones research fill in the table to learn m…
| Climate Zones | Temperatures | Precipitation | Wind/Storms | |--|--|--|--| | Polar Zone | Very low (below - 10°C on average) | Low (usually < 250 mm/year) | Strong, cold winds |…
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a cannon ball is launched into the air with an upward velocity of 116 f…
When the cannon - ball is 108 feet high: $t\approx1.0$ seconds, $t\approx6.2$ seconds When the cannon - ball hits the ground: $t\approx7.3$ seconds
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suppose you buy an electric drill with a retail price of $109.97 in a c…
$9.35$
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which best describes the role of setting in a story? setting is used to…
Setting is used to emphasize ideas and theme.
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climate zones - where do most people live? true or false circle whether…
True or False: 1. False 2. False 3. True 4. True 5. False Questions: 1. Answers vary based on personal preference. 2. Polar: Extremely cold, long winters, ice - covered. Temperate…
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the mechanical efficiency of your vehicles powertrain determines how we…
forward motion
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question 5 of 13 which category of waste requires specialized and more …
A. Halogenated solvents
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2) describe the climate of the different seasons in your region? (tempe…
Summer: Warm temperatures, variable precipitation. Fall: Cooling temperatures, less rain than summer on average. Winter: Cold temperatures, possible snow and ice, lower precipitat…
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what does it mean when a change in velocity is negative? the object is …
The object is slowing down.
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a roller coasters accelerates from an initial velocity of 6.0 m/s to a …
$16\ m/s^{2}$
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marie: i passed out because of the blast. what happened after i was pul…
d) Evacuate the building
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because somoza refused to improve his human rights policies in the 1970…
the United States refused to get involved when the socialist Sandinistas overthrew the Nicaraguan regime.
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explain the stages of water treatment as shown above.
The primary treatment includes bar - screening to remove large solids, grit chamber to settle sand and gravel, and a settling tank to separate sludge. Secondary treatment has an a…
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1.7. which of the following would be best done using repeated observati…
B. Determine the average number of times during the month of May that cardinals will visit a bird feeder.
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which best compares a nondigital and a digital camera? a nondigital cam…
A nondigital camera uses film to record images, and a digital camera uses sensors.
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sayid listed some characteristics of waves in a chart. part of his char…
Change "move only through matter" to "move through space and matter."
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which is one advantage of using a reflecting telescope instead of a ref…
B. Reflecting telescopes produce clearer images.
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zach listed the process of how laser beams are produced with crystals. …
Light escapes through the partially reflective mirror, not the highly reflective mirror.
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prisms separate ______ light, such as that from the sun, by wavelength.…
white
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which of these hazards could be removed by adding small amounts of a ce…
c) Corrosiveness
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when sound is created, it travels to the ear through a compression. med…
B. medium
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what was the outcome of the iran hostage rescue attempt? the hostages w…
The United States was humiliated when the military rescue failed miserably.
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which part of the electromagnetic spectrum has the longest wavelengths?…
A. radio waves
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sound waves are produced when something is caused to reflect. vibrate. …
B. vibrate
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which best describes a difference between laser light and regular light…
Laser light is made of one specific color.
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which part of the electromagnetic spectrum is necessary for the sense o…
D. visible light
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what will occur when the trough of wave a overlaps the crest of wave b?…
C. Destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.
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what is occurring when two waves traveling along the same medium meet a…
A. destructive interference
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a museum sets up a display of fluorescent minerals. which best describe…
Ultraviolet light shining on the minerals will cause them to give off visible light.
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after the 1600s, how did observations of light being refracted change t…
They began to believe that light acted as waves.
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what do diffraction and refraction have in common? they both involve in…
They both involve wave interactions.
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if humans cannot see ultraviolet waves, how can ultraviolet light be us…
Ultraviolet light causes substances to fluoresce and give off visible light.
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a clothing manufacturer uses lasers to cut patterns in fabric when maki…
Lasers save time by cutting through more layers of fabric.
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when light bends as it passes from one transparent object to another, t…
C. refracted
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which statement can be made about waves a and b? wave a has a lower amp…
Wave A has a lower frequency than Wave B.
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which best describes what occurs when an object takes in a wave as the …
absorption
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which is a sentence fragment? the next - door neighbors of my elderly g…
The next - door neighbors of my elderly grandparents.
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an endoscope is a fiber - optic medical instrument that emits light. do…
They are small and flexible.
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sound wave a is moving through a medium that is decreasing in temperatu…
They will slow down.
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step 2: check the limits how many calories total does your meal have? 3…
It is time to makeover your meal!
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step 1: choose your favorite restaurant and list what you typically eat…
Calories: 3425 Grams of Fat: 191.85
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latitude and longitude describe locations on the earth with respect to …
The temperature decreases by about 1.7° for each 1 degree increase north in latitude.
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read this passage from the essay this is spinal fusion which describes …
Question 1: The word choices help readers sympathize with the writer's painful experiences. Question 2: The connotations of words can affect the reader's understanding of a work. …
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2. the role of the securities and exchange commission (sec) is to: regu…
Regulate securities and financial markets
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check each situation where work would occur. you slide a chair across t…
You slide a chair across the floor. You pick up a box.
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the scatterplot shows the time it takes for a new hot plate to boil var…
The line of best fit is not reasonable because it has more points below it than above it.
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what makes earth habitable? after discussing how you would change your …
Earth's habitability is due to its distance from the Sun, a stable atmosphere, presence of liquid water, and a protective magnetic field, along with the Sun's consistent energy ou…
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class e general knowledge question #43 / 50 a motorcycle has crashed an…
A. You must not attempt to remove the helmet of the motorcycle rider.
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which situation would result in interference? a wave bouncing off an ob…
a wave increasing in energy as it hits another wave
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which is shown by the letter x? trough amplitude crest wavelength
C. crest
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which feature of a wave can be calculated using the formula below? numb…
C. frequency
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the energy of microwaves is less than the energy of ultraviolet light. …
Gamma rays have higher energy than microwaves because gamma rays have shorter wavelengths.
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step 1: choose your favorite restaurant and list what you typically eat…
2890
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a doctor uses an instrument(s) that emits light and allows the doctor t…
D. fiber optics
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which of these most directly affects what happens to white light when i…
the properties of the object
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part 1: multiple choice select the best answer for each question from t…
D. dot density map
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the waves created by two speed boats in a lake interact to form larger …
A. constructive interference
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part 1: multiple choice select the best answer for each question from t…
D. direction
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which types of electromagnetic waves have wavelengths that are longer t…
infrared light
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question 34 4 pts wattage is the product of voltage and amps. if a band…
504
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part 1: multiple choice select the best answer for each question from t…
D. color
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which statement best compares the speed of a sound wave moving through …
The sound wave would move faster through the water than through the water vapor.
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jin has four colorful glass bottles on his windowsill. one is red, one …
red
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write 746.5 in scientific notation.
$7.465\times10^{2}$
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ingrid says that a red ball of clay appears red because the clay reflec…
Ingrid is correct. The clay appears red because it reflects red wavelengths.
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as the temperature of a medium increases, the speed of the sound wave i…
increases because the particles bump into each other more often.
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when you can do it safely, ____ instead of relying heavily on your brak…
coast to a stop
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hamish is studying what happens when he sends a sound wave through diff…
Wave 3 will move the slowest.
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part 1: multiple choice select the best answer for each question from t…
45 degrees North, 9 degrees East
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which part of the electromagnetic spectrum is nearest to x - rays? micr…
C. gamma rays
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part 1: multiple choice select the best answer for each question from t…
the prime meridian
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bees can see into the ultraviolet region of the electromagnetic spectru…
D. a higher frequency and a shorter wavelength.
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part 1: multiple choice select the best answer for each question from t…
C. shifts in currents of the Atlantic and Pacific oceans
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question 3 part 1: multiple choice select the best answer for each ques…
absolute location
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class e general knowledge question #32 / 50 when driving after a heavy …
A. Wet brakes
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environmental conservation movement - #22 educator 1 multiple - choice …
C. Conservationists like Gifford Pinchot
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question 1 0.5 pts part 1: multiple choice select the best answer for e…
A. several cities located near bodies of water
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a plane is traveling at a constant speed of k kilometers per hour. whic…
\((1,K)\)
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class e general knowledge question #24 / 50 if a traffic signal is out …
B. Stop as you would for a four - way Stop sign.
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6. it took 3 hours for a train to travel a straight track between two c…
8. 1200 s; Yes, as it may change speed or direction. 9. 200 miles/hr; Yes, as direction is changing on oval - track. 10. 5 hours; 2 pm
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environmental conservation movement - #22 educator 1 multiple - choice …
He wanted to protect nature from human use and interference.
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the sections of the nutrition facts label directions: highlight the sec…
Step 1: 170 Step 2: 21, 28, 3.5 Step 3: 11, 0, 250 Step 4: 1, 0, 5, 0, 35 Step 7: Enriched Corn Meal
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environmental conservation movement - #22 educator 1 multiple - choice …
B. Human behavior can negatively affect the environment.
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true or false 4 points scientific laws often use mathematical formulas …
True
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the routes of two planes are shown. they take off from the same airport…
An air - traffic controller may direct one plane to change its altitude (either climb or descend) while the other plane maintains its current altitude. Another option is to direct…
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5. spirit of australia, a hydroplane boat, made speed records by travel…
$8.0467$ km/min
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the routes of two planes are shown. they take off from the same airport…
C. Plane 1 and 2 have the same average speed
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patient name: martin long date description charge insurance payment pat…
$188.87$
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greg is giving a slide show presentation to a large audience. how might…
He can use the laser to point to specific information on the slides.
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how are reflecting telescopes similar to devices that produce laser lig…
Both use mirrors to reflect a beam of light.