物理
运动学、受力分析、电学与方程推导。
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try again your answer is wrong. in addition to checking your math, chec…
33 g/L (or 33 g, with the understanding that it's per liter)
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comprehension questions 5 questions your work is automatically saved. 1…
C. the layer of the atmosphere closest to the surface of the Earth ### Question 2
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question: what is the difference between pixel size and resolution of a…
B. None of the above
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40. aluminum has a specific heat of 900 j/kg·°c. how much energy would …
d. 5.4 kJ ---
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here are four economic enigmas. - why do economy seats on airplanes cos…
1. Why do economy seats on airplanes cost different amounts? 2. - decisions are often made at the margin - benefits should outweigh costs - incentives matter - scarcity forces tra…
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look at the bar graph. where can we find the least amount of fresh wate…
Water above ground (surface water)
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which two spheres interact during the water cycle? atmosphere and hydro…
atmosphere and hydrosphere
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a water tank in the shape of a cylinder contains 54,000 gallons of wate…
90000
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31. what is absolute zero on the fahrenheit scale? a. $0\\ ^{circ}\\tex…
d. $-459.67\ ^\circ\text{F}$
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22. what is the preferred temperature scale used in scientific laborato…
22. c. kelvin 23. b. liquid 24. d. radiation 25. d. wood 26. d. Water boiling in a pot 27. a. J/kg 28. b. water 29. c. melting and vaporization 30. d. Condensation is on the insid…
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18. how much energy would it take to heat 1.00 kg of ice at 0 °c to wat…
d. 397 kJ
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which microscope is often used to view metal surfaces? scanning tunneli…
scanning electron microscope
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problems 11.1 temperature and thermal energy 14. what is 35.0 °f in kel…
d. 274.8 K
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Question was provided via image upload.
A. How are the continents moving today?
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pregunta 1 if the temperature of a substance is low, then we know that:…
1. The average kinetic energy of particles is also low. 2. The particles of the substance initially had high Kinetic Energy. 3. Energy always flows in a direction from warmer to c…
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analyze the statement: \as the frequency of an electromagnetic wave inc…
B. The statement is incorrect because energy increases as frequency increases
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design an experiment to demonstrate how different types of electromagne…
D. Infrared waves and a glass of water
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a radio station broadcasts at a frequency of $2.5 \\times 10^8$ hz. ano…
D. The \( 9.5 \times 10^{4}\, \text{Hz} \) wave carries more energy because it has a higher frequency
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practice alan is making a cardboard structure for his children to play …
D. 180 ft²
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analyze the relationship between wavelength and frequency in the electr…
B. Wave X has half the frequency of Wave Y
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10. a goldsmith has a gold bar with a volume of 200 cm³. if the density…
$3860\ \text{g}$
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9. a liquid has a density of 0.8 g/cm³. if you pour 500 cm³ of this liq…
$400\ \text{g}$
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practice paul unfolded a pyramid container and wanted to determine the …
D. \( 28 \, \text{ft}^2 \)
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8. a block of wood has a volume of 200 cm³ and a mass of 100 grams. wil…
Yes, the block of wood will float in water. Its density is $0.5\ \text{g/cm}^3$, which is less than the density of water ($1\ \text{g/cm}^3$), so it meets the condition for floati…
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7. a block of ice has a density of 0.92 g/cm³ and a mass of 460 grams. …
$500\ \text{cm}^3$
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6. an apple has a mass of 150 grams and a volume of 200 cm³. what is th…
$0.75\ \text{g/cm}^3$
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30. i will perform only those activities that have been authorized by t…
30. b) True 31. a) True 32. a) False 33. c) All of the above 34. c) Microscope 35. b) Ruler 36. c) Thermometer 37. a) Triple beam balance 38. a) Pipe stem triangle 39. c) get a sn…
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5. a small plastic toy has a mass of 50 grams and occupies a volume of …
$2\ \text{g/cm}^3$
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3. which of the following statements about density is correct? a) incre…
b) Decreasing the volume of an object will increase its density if the mass remains constant.
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2 true or false: if two objects have the same volume but different mass…
True
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which of the following statements is true? multiple choice people who d…
C. In general, registered dietitian nutritionists are reliable sources of nutrition information.
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scientists conduct a study in which 100 adults with chronic diarrhea ar…
D. double - blind
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robert gathered data about the annual snowfall in relation to the eleva…
B. Elevation and Snowfall (with x-axis 3500-7500 feet, y-axis 0-140 inches)
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name: match the following terms and identifying phrases. a. blanching b…
L. steaming ### Question 15
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14. moist - heat method that cooks food by placing it on a perforated t…
s: 27. False (the statement is incorrect as metals are better heat conductors than plastic or wood) 28. False (darker pans absorb energy better than shiny, light - colored pans)
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3 types of acceleration are... slowing down; changing direction; travel…
Slowing down, Changing direction, Speeding up
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a popular podcast includes interviews with \experts\ on topics related …
A. RDN
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what is the primary reason the invasion of normandy is considered a tur…
B. The invasion positioned the Allied forces to begin the Western Europe campaign.
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how many states of matter are there? what are the states of matter?
The number of states of matter can vary depending on the context. In basic science education, the three common states are solid, liquid, and gas. In a more comprehensive (includin…
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which formula is used to calculate acceleration? acceleration = time / …
Acceleration = (Final velocity - Initial velocity) / Time
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use the list below to answer the question. - 1941—the u.s. enters world…
D. fighting on multiple fronts
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please locate, draw, and label the items below on the circle (earth) us…
1. Equator: Draw a horizontal line through the exact center of the circle, label it "Equator (0° Latitude)". 2. Prime Meridian: Draw a vertical line through the exact center of th…
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which of these is an example of negative acceleration (or deceleration)…
D. a car approaching a red light
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which of the following best describes acceleration? position of an obje…
Change in speed over time
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which of the following best describes speed? change in velocity over ti…
D. Distance traveled per unit time
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which formula correctly calculates speed using the dst triangle? speed …
A. Speed = Distance / Time
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a nutrition researcher would like to determine whether women who take f…
C. case - control (Wait, no, correct answer is actually A? Wait, no. Wait, prospective study: follows a cohort forward. Case - control is retrospective (looks at existing cases an…
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a student finds a fossil of a fish and concludes that the fossil must b…
1. false 2. false 3. true 4. false
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the table shows the densities of four solid objects in grams per millil…
Floats in water: balsa wood Sinks in water: glass bead, quartz crystal, copper cylinder
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which list of items would an ecological scientist most likely include w…
B. deer, wolf, tree
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question 7 4 pts fish fossils were found on top of a mountain. what con…
mountain was under water
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which mountains divide russia into a european and an asian section? the…
C. The Ural Mountains
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what is located in central russia, stretching from the ural mountains t…
B. West Siberian Plain
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lpn 101 dosage calculation exam 1 7. order: codeine 30 mg po available:…
7. 10 mL 8. 15 mL 9. 0.5 mL 10. 0.1 mL 11. 0.4 mL 12. 3 tablets 13. 3 tablets
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question 6 4 pts the index fossil of a type of trilobite is discovered …
The rocks are all the same ages.
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question 9 0.5 pts the russian plain is also known by which of the foll…
A. The Eastern European Plain
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____________________ is the driving force that encourages people and or…
1. profit motive 2. government control
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read the claim below. virtual reality, in which a person enters a fully…
- A person trying to "walk" through a virtual world may become injured after walking into real-world furniture. - After wearing virtual-reality headsets, people have reported feel…
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the general steps scientists take when conducting research are referred…
1. Make observations that generate questions 2. Review current scientific literature (published studies) that relate to the questions 3. Formulate hypotheses to explain events 4. …
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which process allows water to enter the atmosphere? evaporation condens…
evaporation
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find the value of x. (figure is not to scale). 10.9 57.1° x x = units r…
16.91 units
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read the claim below. more people should can food at home instead of bu…
Canning at home allows people to choose which foods are preserved and how the foods are flavored.
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at 25°c, a brass key has a density of 8.40 grams per milliliter, and a …
The brass key will sink to the bottom of the beaker.
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for the right triangle below, find the length of x. 5 13 x = round to t…
13.93
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at 25°c, a lead fishing weight has a density of 11.34 grams per millili…
The lead fishing weight will sink to the bottom of the beaker.
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what has been the effect of erosion in the ural mountains? - erosion ha…
C. Erosion has exposed many valuable minerals.
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read the claim below. nursing is a highly rewarding career. select the …
Nurses routinely save lives in the course of their work.
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what would happen if there were no condensation stage in the water cycl…
A. Water could not convert from a gas to a liquid.
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hertzsprung-russell diagram which type of star is in spectral class k a…
red supergiant
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question 7 0.5 pts the caucasus mountains separate what two bodies of w…
C. Black Sea and Caspian Sea
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zack takes 500 mg of vitamin c daily. he advises his friends to take vi…
C. anecdote
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how is the sun classified on an hertzsprung-russell diagram? (1 point) …
as a main sequence star
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which of these phrases describes the sun? (1 point) class g yellow star…
A. Class G yellow star
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ted places an iron nail into a beaker of water. this is what he observe…
sinks in . . . more
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options: helsinki, stockholm, bucharest, moscow
Bucharest (among the options: the option with "Bucharest" as the text, e.g., if it's a radio button or checkbox with Bucharest, that's the correct one)
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which of these properties is the best measure of a stars brightness? (1…
absolute magnitude
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options: estonia, latvia, lithuania, ukraine (with a map of europe show…
D. Ukraine
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is this statement true or false? the ural and caucasus mountains form p…
True
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ruth places a gold necklace into a beaker of white vinegar. this is wha…
sinks in . . . more
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how did we discover how hot the corona was? both of these none of these…
both of these
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all political states face varying forces that unite or divide their cit…
Centripetal forces (e.g., shared language, national identity) unify a state, fostering cohesion, prosperity, and harmony. Centrifugal forces (e.g., ethnic separatism, regional eco…
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reading passage earth’s atmosphere has several layers that influence we…
B. Troposphere ### Question 2
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7. which season can be affected by greenhouse gas changes? a. summer on…
D. All seasons ### Question 8
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mechanical energy is ________. a. a type of potential energy that is st…
B. the sum of an object’s potential and kinetic energy
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7. which season can be affected by greenhouse gas effect? a. summer onl…
C. Respiration ### Question 14: "The greenhouse effect is:"
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electricity is the flow of electrical energy from one place to another.…
1. True 2. Copper 3. Insulators 4. False
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directions: you are to read each problem carefully and answer what the …
1. 3 tablets 2. 2 tablets 3. 10 mL 4. 10 mL 5. 8 mL 6. 10 mL
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what is kinetic energy? a. the rate at which work is performed b. energ…
B. energy that is due to motion
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shabbiness. one of the men was heating something in a tin cu over the e…
- Tokens of love gain special significance in wartime. - Good luck charms can provide solace but not protection.
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when experiencing an emotion, an important habit to develop is analyzin…
thoughts
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6. - i create decorative edges and grooves - my spinning bit carves int…
6. Router 7. Hammer 8. Spirit Level (Level) 9. Tape Measure
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why is the acceleration graph part 3: rightward velocity and negative a…
s: - For "Explain what is happening to the dots on the ticker tape. Why does this happen?": The dots on the ticker tape are spaced increasingly closer together as time passes (whi…
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multiple choice question emotional intelligence, or eq, is best describ…
Emotional intelligence is the ability to manage emotional responses.
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what is it called when the music gradually slows down ritardando deacce…
ritardando
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label these countries in s&e asia drag labels to their correct position…
- Yellow region (top - most label spot): North Korea - Large pink region: China - Left - most island - like label spot: Japan - Lower middle - south label spot (below China): Viet…
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explain how the product reaches the customer promotion how does the bus…
s: - For "Explain how the product reaches the customer": The product reaches the customer through distribution channels. It can be direct (e.g., business sells via its own website…
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multiple choice question the primary focus of critical thinking is: jud…
D. asking questions about situations and texts
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the congress shall have power to lay and collect taxes... to borrow mon…
- set up the post office - borrow money and raise taxes - declare war and equip armed forces
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the most likely reason sound travels faster in salt water than in fresh…
B. has a higher density
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why is the position - time graph shaped like an upward curve? it is bec…
To answer the question "What is the acceleration shown on the acceleration - time graph?", we need to analyze the graph's features: ### Step 1: Recall the meaning of an accelerati…