物理
運動學、受力分析、電學與方程推導。
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the circumference of the earth is approximately 1.31 x 10^8 feet. if th…
B. $2.48\times 10^{4}$ miles
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5. a 2.0 kg otter starts from rest at the top of a muddy incline 85 cm …
$13.6\ N$
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4. which situations in problem 3 represent projectile motion? 5. a ball…
For problem 5: I agree with Conor's selected model because the height of an object in free - fall from an initial height $h_0$ is $h(t)=h_0-\frac{1}{2}gt^2$, and with $h_0 = 10$ m…
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part d for the left figure below, replace the distributed loads by an e…
$23.4\ kN,32.2\ kN\cdot m$
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wet concrete exerts a pressure distribution along the wall of the form.…
$h = 2.00\text{ m}$
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the table shows the percentage of male and female populations in a cert…
$y=-4.42x + 8885.28$
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5. weight in pounds of 200 gallons of water 200 g × 8.345 lbs = 6. dens…
Weight of 200 gallons of water: 1669 lbs Density of 8 - ft 2x4: 15.41 lbs/$ft^{3}$
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watch unemployment game show are you officially unemployed? https://www…
1. (a) People who are without work, are available for work, and have actively sought work in the prior four - weeks. (b) People who have a job. (c) The sum of the employed and the…
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short answer: answer each question. 11 do you think that ferdinand mage…
Yes. Firstly, he was the mastermind behind the expedition that aimed to circumnavigate the world. His planning and leadership were crucial in setting the journey in motion. Second…
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the table shows the percentage of male and female populations in a cert…
\(y = 4.42x+26.38\) (assuming the problem only asks for the slope as in the given partially - filled answer, the slope is \(4.42\))
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multiple choice. choose the best answer 19. what is the main reason col…
19. C 20. C 21. B 22. C 23. C 24. B
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question 7 (1 point) both x - rays and gamma rays have higher frequenci…
Question 7: True Question 8: True
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question 6 (1 point) communicating with satellites is an application of…
False
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5. what was the outcome of vasco da gamas expedition to india? 6. how d…
5. Opened a direct sea - route between Europe and India, starting Portuguese colonial expansion in Asia. 6. Through diplomacy, gifts, and sometimes force; presented European goods…
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question 1 of 2 employers should attach tags to identify equipment or c…
C. Live
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which object will have the greater density: a pure iron anchor or a pur…
They have the same density.
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question 1 of 3 what hazard happens by electricity in tissues, high tem…
Burns
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question 1 of 1 which of the following are electrical hazards? shock ex…
Shock, Explosions, Burns, Fire, Arc Flash, Electrocution
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large landowners primary source of labor was the enslaved african peopl…
1. Southern 2. The Southern Colonies had a large - scale agricultural economy based on labor - intensive cash crops, leading to a high demand for enslaved labor. 3. 8.0% 4. New En…
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evaluate the effectiveness of this ad. why is association a good strate…
The ad is effective as association works well for a target audience likely to value social connection and health. Association is a good strategy as it plays on emotions and contra…
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classify information write ne if a statement describes the new england …
1. NE 2. S 3. S 4. NE 5. NE 6. S 7. S 8. M 9. NE 10. S
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1. the empire state building sways back and forth every 7 seconds. what…
1. The frequency is $\frac{1}{7}\ Hz\approx0.14\ Hz$. 2. The period is $\frac{1}{0.35}\ s\approx2.86\ s$.
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question 3 (10 points) the fda is the federal agency that monitors comp…
False
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1. how do you declare a variable in c++?
In C++, a variable is declared by specifying its data - type followed by the variable name. Optionally, it can be initialized immediately. For example, 'int num;' (declaring an in…
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16. set the frequency so it is now at 3.00 hz. keep the amplitude at 1.…
20. The amplitude was kept constant throughout the experiment, so it is not relevant to the relationship between frequency and wavelength being studied. 21. Yes 22. It decreases. …
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which statement best describes an electron? smaller mass than a proton …
Smaller mass than a proton and a negative charge
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a conductor allows electrical current to move through it easily. which …
The metal railing (the fifth image from the left in the grid) is a conductor.
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at 2:00 pm the temperature is 18°f. at 10:00 pm the temperature is -9°f…
$-27$
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at 2:00 pm the temperature is 18°f. at 10:00 pm the temperature is -9°f…
$27$
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the canine tooth of a bengal tiger is 4 inches long. there are 2.54 cen…
10 cm
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the canine tooth of a bengal tiger is 4 inches long. there are 2.54 cen…
$4\times2.54$, and the length of the tooth is 10.16 cm.
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look at this dictionary entry. illusion \\ih - loo - zhuhn\\ noun illus…
Zebras' black and white stripes create optical illusions that confuse insects and predators on the savannah.
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is the emergency exit in this evacuation floor plan in a correct locati…
No, because it leads to a restroom
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gina is about to use a fire extinguisher on a small fire. what factor d…
B. The type of fire
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you are working on a large plant floor when you hear an explosion, whic…
B. No
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which statement best describes how physical geography contributed to th…
Landslides and flooding destroyed villages, causing the population to use violence to gain food.
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portable fire extinguishers contain a limited amount of extinguishing a…
D. Seconds
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1. how long will it take 600 grams of plutonium - 239 (half - life = 24…
1. 122000 years 2. 11136 years 3. 0.000625 g
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ignition sources, such as static electricity or lightning, can start a …
B. Smoking
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what is the difference between cajoling and enticing? enticing involves…
cajoling is more likely to involve flattery
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jacob is the punter for his schools football team. during practice, he …
The second - graph (top - right graph)
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question 1 of 1 we learned that there is a specific order to use when o…
1. Pull 2. Aim 3. Squeeze 4. Sweep
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which statement best explains why mass is not conserved in a nuclear ch…
Some of the matter is converted to energy.
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polonium has a mass number of 212 and an atomic number of 84. in a bala…
82
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250 in³ to cm³
4096.766 cm³
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construct a truth table for the boolean expression x = ab + bc
The truth - table is shown above.
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complete the sentence with the word that best fits the overall meaning …
cerebral
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it is okay to pick up broken glass with your bare hands as long as the …
1. False 2. C. Goggles
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4 true or false 20 points it is okay to pick up broken glass with your …
False
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complete the sentence with the word that best fits the overall meaning …
fast
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3 true or false 20 points always carry a microscope using both hands. t…
True
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1 multiple choice 20 points before you leave the science room, you shou…
D. All of the above
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which is a thesis statement? despite government subsidies for renewable…
Solar energy is a better source of power than coal because it is clean and renewable.
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dean is helping with a program to increase recycling at his school. at …
The graph on the right
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first activity: amplitude 1. hit the green button once to generate a pu…
1. Bounces back (simplified observation of reflection at fixed end) 2. Amplitude (the correct slider for starting wave height, not damping) 3. Can't be verified without more conte…
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which of the following answer choices should be eliminated first from t…
C. Mickey Mouse
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what should environmentally conscious citizens do to help conserve and …
There are multiple actions such as waste management, energy conservation, sustainable transportation, tree - planting, and policy advocacy.
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does the center of the wheel change if the wheel is spun counterclockwi…
No
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babies need a lot of sleep, but as people get older, the amount of slee…
The second graph
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mitch did an experiment about evaporation for the school science fair. …
The first graph (the one with a decreasing - curve)
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are there any points on the wheel that stay fixed, or do not move, when…
The center point of the wheel does not move when the wheel spins.
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1) (4) you find a bone in your back yard and it looks very old. you buy…
Approximately 15683 years.
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500 μm to in.
0.0197 in.
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listed in the item bank are key terms and expressions, each of which is…
TRUE: Materials containing air are usually good insulators., Heat travels from warmer to colder places., White cars absorb less heat than black cars., A substance that does not co…
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pablo is spinning the prize wheel shown. 1. a spin can be clockwise or …
Clockwise: The direction of a clock's hand movement. Counterclockwise: The opposite direction of a clock's hand movement.
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determine which heat transfers below are due to the process of conducti…
A. I and II
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in nature, hot air tends to rise and cool air tends to sink. this is be…
B. heating a fish tank
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this process of heat transfer is best described as a condensation. b co…
C. convection
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marina is cooking soup in a pot on the stove. the pot is in direct cont…
C. conduction
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ana poured equal amounts of water into four bowls. then she put the bow…
D. Bowl 4
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peters mom is cooking brownies in a pan in the oven. which pan should s…
A. metal pan
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question: 4 how would we write an if statement where tracy will put the…
Question 4: C. if count > 0: pendown() Question 5: D. Tracy skips the commands under the if statement
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the method of heat transfer by which the sun energy reaches the earth i…
C. radiation
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instructions for student reread paragraphs 6 - 9 of phineas gage: a gru…
1. B. The incident proves that accidents can happen to even the most experienced experts. 2. B. 7 3. D. "It takes a fraction of a fraction of a second for the iron rod to pass fro…
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which image exclusively represents the principle of radiation? a iv b i…
B. III
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multiple choice 2 points what mainly can the reader infer about roger f…
B. He comes from a troubled background.
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sarahs group designed this oven and eventually melted the chocolate, bu…
C. Yes. A black bottom will absorb more heat energy when the sunlight is reflected into the box by the foil.
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if the following code was run, how far would tracy move? 1 length = 25 …
100 pixels ### Question 2
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you have been studying heat transfer in science class. your task today …
D. radiation
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question 32 the clear intent of the framers of the constitution was for…
None of the above options are correct as the framers intended a system of checks - and - balances and no single - branch dominance. If forced to choose from the given options, the…
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which two metals make up most of earths core? o copper and zinc o silve…
D. Iron and nickel
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which layer does the convection currents occurs? outer core inner core …
First question: Mantle Second question: liquid
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which layer is the hottest part of earth? crust outer core mantle inner…
1. D. Inner Core 2. A. Mantle
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lets focus on pathos examples: if you dont go on this holiday you will …
**Task One** 1. "Think about the joy on the faces of those underprivileged children when they learn new things. Won't you consider tutoring them?" 2. "Imagine the excitement and c…
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who made movies possible with the invention of the movie camera? edward…
B. Thomas Edison
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a quasi - legislative function of bureaucracies is select one: a. enfor…
B. rule making
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source: robert frost, new hampshire, 1923 note: “eden” is a biblical re…
1. 4 2. Spring; because the fresh green of new growth quickly changes as plants mature. 3. It reinforces the idea of the first couplet as it also shows the short - lived nature of…
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2.02 functions of skeletal muscles review guide directions: match the n…
1. F. Gluteus maximus 2. K. Rectus femoris 3. J. Gastrocnemius 4. I. Diaphragm 5. L. Intercostals 6. B. Sartorius 7. N. Triceps brachii 8. D. Deltoid 9. A. Gluteus medius 10. C. R…
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name these relative locations using grid coordinates: 23. 40° n, 100° w…
25. Australia 26. Asia 27. Pacific 28. Indian 29. Atlantic 30. Arctic
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if the following code was run, how far would tracy move? 1 length = 25 …
For the first question: 100 pixels For the second question: To have Tracy make decisions based on conditional statements
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question 6 2 pts what is the speed of a gear with 42 teeth driven by an…
140
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scientists very often deal with very small and very large numbers, whic…
1. $5\times10^{-3}$ 2. $5.05\times10^{0}$ 3. $8\times10^{-4}$ 4. $1\times10^{0}$ 5. $1\times10^{6}$ 6. $2.5\times10^{-1}$ 7. $2.5\times10^{-2}$ 8. $2.5\times10^{-3}$ 9. $5\times10…
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mercury’s average distance from the sun is 57,190,000 km. what is the d…
$5.719\times 10^{7}$
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9 the approximate circumferences of earth and saturn are shown. how man…
The circumference of Saturn is about $0.9124$ times as great as the circumference of Earth.
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the half - life of uranium is 2.5 x 10^5 years. what is this in standar…
250000
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name these relative locations using grid coordinates: 23. 40°n 100°w is…
23. United States 24. South America 25. Australia 26. Japan 27. Pacific Ocean 28. Australia
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7. identify the correct unit rate category for the following values. $0…
$0.12$ per kilowatt - hour: Electricity Cost 25 miles per gallon: Fuel Efficiency 45 miles per hour: Speed 80 beats per minute: (No match in given categories)
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9. apply demorgan’s theorems to each expression: a. $overline{a + b}$ b…
a. $\overline{A}\overline{B}$ b. $A+\overline{B}$ c. $\overline{A}\overline{B}\overline{C}$ d. $\overline{A}+\overline{B}+\overline{C}$ e. $(\overline{A}+\overline{B})(\overline{A…
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16. the greatest distance between the sun and jupiter is about 8.166×10…
$6.984\times 10^{8}$ kilometers
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5. a system consists of two positive point charges, q1 and q2>q1. the t…
$q_1 = 14.5\ \mu C$, $q_2 = 47.5\ \mu C$