物理
運動學、受力分析、電學與方程推導。
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during an experiment, you take a measurement of 3.5 inches. what is thi…
C. 8.89 cm
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sentence: the unit for length in the si system is the meter. choose all…
B. kilogram, C. meter, D. second
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what should an edible spoon design fulfill according to the engineering…
It should fulfill certain wants and needs.
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question 5 (2 points) listen rutherford proved that the atom is mostly …
True
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what should be included in the explanation about the criteria of an edi…
A. A list of materials, B. A discussion of costs, C. A list of colors, D. A discussion of claims, evidence, and reasoning
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question 4 (2 points) listen there are particles smaller than the atom …
A. True
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sentence: people need to agree on standards for precision and consisten…
A. using a ruler to measure the length of a piece of paper
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why is it important to identify the rank criteria prior to designing an…
To ensure the solution is cost - effective, To identify challenges for the solution
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why might wood be chosen for making musical instruments? it provides a …
It provides a warm, rich sound, It is easy to shape
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question 13: which unit conversion would correctly convert 1 kilometer …
Question 13: A. 1 km = 1000 m Question 14: A. They ensure the final answer has the desired units
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why are experiments often performed in laboratories? a. you can control…
A. You can control variables more easily.
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what is the best way to improve objectivity in the paragraph? by removi…
by eliminating emotional language used to describe the charity work
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why is it important to consider environmental impacts when evaluating s…
To ensure solutions are sustainable.
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what is the purpose of collecting evidence during the study of the engi…
To understand criteria and constraints.
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which quotations from the excerpt provide evidence to support the claim…
"Security forces arrested three people who administered nearly two dozen Facebook pages." "It [Egypt] also detained activists who had been involved in prior protests." "Meanwhile …
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1) why is getting enough sleep important for motivation? (a) it helps y…
B. It improves memory and attention
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what is one advantage of using metal for musical instruments? it is lig…
It produces a clear, resonant sound
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what role does iteration play in the engineering design process? it hel…
It helps refine solutions as new data becomes available.
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question 1 what did louie zamperini do before going to war? he lived wi…
He was an Olympic runner
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have you ever left your computer feeling sore in your wrists or shoulde…
By doing a little research about an ergonomic workstation and then making small changes to your work area, you can prevent muscle strains and tension, headaches, pinched nerves, a…
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which material is commonly used for roofing due to its durability and w…
C. Metal
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what is one of the tasks involved in the engineering design process for…
Developing claims about design properties.
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question 27 of 27 which force operates at a distance of 1 m? a. strong …
C. Gravitational
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question 25 of 27 a roller coaster has a mass of 450 kg. it sits at the…
D. 31.0 m/s
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question 24 of 27 a farmer lifts a bale of hay to a hayloft that is 10 …
D. 4200 J
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question 23 of 27 which type of force keeps your feet on the ground as …
B. Gravitational
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question 22 of 27 a tree limb is blown loose from a tree during a storm…
D. Kinetic energy
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question 21 of 27 which fundamental force is responsible for some kinds…
B. Weak nuclear
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which special - operations units would be called to address a radiologi…
HRMU
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question 20 of 27 a parachute slows down the speed of a skydiver. what …
A. It increases the force of air resistance.
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question 19 of 27 what kind of force do you use when you rub a balloon …
A. Electric
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which of the following disaster scenarios would require the help of a w…
trapped pets during a flood, a ship on fire in a port
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question 18 of 27 a car of mass 500 kg is moving at a speed of 1.2 m/s.…
C. 640 J
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question 17 of 27 how fast is a ball going when it hits the ground afte…
A. 13.3 m/s
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select the correct answer. which theme is reinforced in the excerpt bel…
B. complexity of action
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question 16 of 27 what energy transformation takes place when you climb…
D. Kinetic energy transforms into potential energy.
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question 15 of 27 which of the following energies is related to tempera…
A. Thermal
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question 14 of 27 which fundamental force is very strong across a short…
C. Strong nuclear
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question 13 of 27 a car has a mass of 8000 kg and a kinetic energy of 2…
D. $2.4\ m/s$
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question 12 of 27 an object raised above the ground is an example of wh…
D. Gravitational
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question 11 of 27 a force of 77 n is used to move a desk 1.5 m. how muc…
D. 115.5 J
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question 10 of 27 the graph below shows the conservation of energy for …
A. Total energy
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question 9 of 27 a gardener uses 2700 j of work to push a wheelbarrow f…
A. 45 W
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which dog has the most kinetic energy? a. a dog of mass 14 kg running w…
C. A dog of mass 12 kg running with speed 6 m/s
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thermal energy and kinetic molecular theory quick check when thermal en…
The particles' kinetic energy decreases.
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question 7 of 27 in which case is work being done? a. when a force is e…
B. When a force makes an object move over a distance
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21 matching 6 points match the fact to the nutrient consists of simple …
1. Consists of simple & complex sugars - Carbohydrates 2. Burned off only after 30 minutes of exercise - Fat/Lipids 3. Main source of energy - Carbohydrates 4. Builds, maintains &…
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a book with a mass of 1.8 kg sits on a bookshelf. if it has a gravitati…
A. 2.4 m
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while working out, a man performed 500 j of work in 8 seconds. what was…
B. 62.5 W
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full employment means a. there is a level of unemployment consistent wi…
A. there is a level of unemployment consistent with "normal" frictions in the labor market.
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what component becomes a temporary magnet when electricity is flowing t…
D. wire coil
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a cat with a mass of 5 kg sits on a branch that is 26 m off the ground.…
A. 1274 J
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how does the magnetic force vary with distance? a. as distance increase…
D. As distance increases, the magnetic force decreases.
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power is measured in units of watts. what are watts? a. joules per seco…
A. Joules per second
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a bowling ball with a mass of 10 kg is moving at a speed of 3 m/s. what…
D. 45 J
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19 multiple choice 1 point of the statements, which one is true about t…
19. Items are listed by amount. The largest amount is listed first. 20. Fish
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a large farm is located on the bank of the mississippi river. when the …
Gulf of Mexico/Gulf of America
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shutter speed experiment: reflection to answer these questions, you may…
Shutter speed is the duration for which a camera's shutter remains open, letting light hit the sensor, measured in seconds or fractions of a second.
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match the tool to its primary purpose armillary sphere telescope paper …
Armillary Sphere - manipulative paper models to visualize astronomy concepts Telescope - to view objects in space Paper Instruments - manipulative paper models to visualize astron…
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the gulf of mexico/gulf of america receives pollutants from which major…
C. Mississippi
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which of the groups from the food plate provides the best source of car…
1. C. Grains 2. D. All of these could be true
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which are accurate statements about joseph stalin? choose three correct…
He created a secret police force. He sent his rivals into exile. He persecuted ethnic groups.
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what does the term utrient load\ refer to in the context of water pollu…
the amount of nutrient pollution in the water
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which of the following is not a mineral? iron potassium riboflavin calc…
13. C. Riboflavin 14. D. All of the above are examples of how models accomplish their look 15. (Options are incomplete for this question, but if we assume standard food - plate gr…
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minorities face challenges in the progressive era 1. determine central …
1. The central idea is that Progressivism sought to address social problems but often overlooked the needs and rights of minority groups. 2. Two examples are Americanization progr…
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the gulf of mexico/gulf of america is most affected by which major rive…
D. Mississippi River
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in the mid - 1900s, lake washington near seattle, washington was primar…
untreated sewage
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a famous case study in the united states describes how a very polluted …
Lake Washington
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where is the most polluted part of a river? farthest downstream farthes…
Farthest downstream
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select the correct answer. what distinct quality does the speaker attri…
D. She can conceal her moods completely.
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the north american x - 15 rocket - powered aircraft is the worlds faste…
The plane flies faster.
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the unemployment rate is calculated as a. $\frac{the number of people i…
C. the number of unemployed / the number of people in the labor force × 100
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where does new orleans get the majority of its drinking water? the miss…
The Mississippi River
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the labor force is equal to the number of employed plus the number of u…
B. True
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7 multiple choice 1 point eggs would be found on the food plate under t…
7. B. False 8. A. True 9. B. False
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which modification would most likely make the wire loop rotate faster? …
Use a larger battery.
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exam 2 1. a baseball is thrown horizontally from the top edge of a tall…
$78.4\ m$ #### b)
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how much taller is the burj khalifa than the eiffel tower? explain how …
The Burj Khalifa is 504 meters taller than the Eiffel Tower. I found my answer by subtracting the height of the Eiffel Tower (324 meters) from the height of the Burj Khalifa (828 …
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1. illegal steroids contain the male hormone; estrogen. true false 2. m…
1. B. False 2. B. False 3. B. False
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a planned economy is one in which the government makes just a few decis…
has total control over a country's resources
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which list of items would an ecological scientist most likely include w…
B. deer, wolf, tree
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thomas paine these are the times that try mens souls: the summer soldie…
emphasize his ideas
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crisis no. 1 thomas paine these are the times that try mens souls: the …
A. Freedom is worth fighting for.
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1. illegal steroids contain the male hormone; estrogen. true false 2. m…
1. B. False 2. B. False 3. B. False
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48 multiple choice 1 point philadelphia was the site of the first incor…
48. D. treat their private patients 49. B. managed care 50. C. Patient Self - Determination Act
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the average diameter of an atom’s nucleus is about 1×10^(-14) meter. th…
1
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22. when calculating r_th in a simple circuit, you ________. a reconnec…
B. short the source and use this formula: $R_{TH}=\frac{(R1\times R2)}{(R1 + R2)}$
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21. what is the last calculation made when thevenizing a circuit? a the…
C. Load current
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states of matter model space 1 solid space 2 liquid space 3 gas space 4…
D. Space 4 because as a gas is heated it changes into plasma.
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20. which is the circuit used when finding thevenin resistance in a bri…
C. The circuit with voltage sources short - circuited and load removed.
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19. if the load resistor is removed but the source is still intact, wha…
A. Thevenin voltage
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18. what is the order of calculations when nortonizing a circuit? a nor…
A. Norton current, Norton resistance, load current, voltage on the load
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1. the amount of rainfall over one week is shown in the graph to the ri…
a. Days it rained: 0 to 1, 2 to 3, and 5 to 6; Days it did not rain: 1 to 2, 4 to 5, and 6 to 7 b. Day 5 - 7; because the slope of the graph (rate of change of rainfall) is the st…
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during puberty, an adolescent will a. undergo growth spurts in height a…
C. both a and b
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17. norton current in this circuit equals a 20a b 2.5a c 3.0a d 3.5a
B. 2.5A
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16. the value for i_n equals the current through a terminals a and b b …
B. terminals A and B with a short - circuit across them
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a student has two balloons filled with air labeled x and y. the student…
A. Static electricity, and it's a non - contact force.
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5. a wide receiver runs with the ball at a constant 9 yards per second …
The cornerback does not catch the wide - receiver before he scores. The cornerback is 1.8 yards away from the wide - receiver when the wide - receiver scores.
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passage 1, how does the setting in mahone bay, away from ninas home in …
It creates an isolated tone, as Nina feels no longer connected to her ordinary life and is forced to spend time with her mother and grandmother in Canada.
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four different objects are placed on a number line at 0. the chart desc…
Z