物理
运动学、受力分析、电学与方程推导。
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quiz question 2 of 5 which of these can be used to describe a places we…
D. All of the above
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what is the main difference between weather and climate? choose one opt…
B. Weather is a short term prediction, while climate is a long - term pattern.
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it can be overwhelming or scary to think about climate change, but ther…
D. All of the above
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climate change, or global warming, is a gradual shift in earths climate…
A. Cutting down forests is one way humans contribute to climate change.
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ever wondered how the weather gets predicted? weather scientists use a …
C. Unpredictability in the Earth's atmosphere
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climate and weather are often discussed together, but they dont mean th…
A. Tonight's cool, breezy weather was typical of Cape Cod's usual climate.
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ocean waves carry large amounts of energy. describe in detail some ways…
Oscillating water column (OWC) devices, point absorbers, and using wave - induced vibrations in flexible membranes with piezoelectric materials.
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24. what was the purpose of the quadrant? a. to determine direction b. …
B. To determine latitude
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the following steps are how a web page takes its journey to get to your…
1. Type web page URL into browser 2. Connect to DNS server 3. DNS server finds the domain's IP address 4. DNS server sends the IP address to computer 5. Connect to web server 6. U…
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as the angle of impact increases, the length of the spatter ___________…
B. decreases
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the fact that the teachers at zitkala-sas school in \the school days of…
their failure to understand and respect Native American beliefs, traditions, and cultures
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what do the works \i will fight no more forever,\ and zitkala-sas \the …
The heavy price westward American expansion extracted from Native American groups, cultures, and traditions.
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practice: density calculations answer the following questions. make sur…
1. \(42\space cm^{3}\) 2. \(2.3\space mL\) 3. \(125\space cm^{3}\) 4. \(0.476\space g/cm^{3}\) 5. \(1.74\space g/mL\) 6. \(0.8\space g/cm^{3}\) 7. \(12\space g\) 8. \(3.87\space m…
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what is the central idea of a text? the feeling or emotion that a text …
the main point the author is trying to make
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read the passage from sugar changed the world. sugar is different from …
It informs readers that there is a connection between slavery and sugar.
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1.) why does connell include so many warnings about ship - trap island …
1. To build suspense and hint at danger. 2. Makes the reader feel tense and worried. 3. To surprise the reader and add depth to the story.
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34 identify the contact force. gravitational force normal force electri…
B. normal force
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module 3: mastery mi physics - s1 / module 3 / lesson 45 33. what is th…
C. \(6.67\times 10^{-11}\frac{Nm^{2}}{kg^{2}}\)
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32. the moon does not orbit earth in a circular path as the distance be…
3.14 x 10⁻³ N/kg
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29 which of newtons laws explains why a passenger in a car will fly for…
Newton's first law of motion
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20. which pair of forces is not an action - reaction force? a toddler p…
C. a dog pulls on a rope toy, and the owner pulls on the other side
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27 which scientist developed three laws of planetary motion to describe…
Johannes Kepler
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26. how does changing the mass of an object affect the acceleration it …
Increasing mass will decrease acceleration
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25. a paper airplane is thrown with an initial velocity of 2.4 m/s and …
C. 1.2 m/s
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24. the moon does not orbit earth in a circular path as the distance be…
D. \(2.42\times10^{-4}\ \text{N/kg}\)
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23. which scientist described gravitational fields as curves in the fab…
Albert Einstein
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22. what device was used to determine the constant g? particle - wave d…
torsion balance
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21. determine the gravitational field on the surface of mars. mars mass…
C. \(2.56\ \text{N/kg}\)
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20 which scientist developed a law describing the attractive force betw…
Isaac Newton
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19. how would einstein describe the phenomena that the sun has more gra…
The sun creates a larger curve in space - time because it is more massive.
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18. a golf ball is hit from a tee at an angle of 15° with an initial ve…
C. 344.22 m
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17 a 75 - kg skydiver jumps out of an airplane. before she opens her pa…
- \(2.47\frac{m}{s^{2}}\)
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15. identify the field force. electrical force friction applied force t…
electrical force
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14. which of newtons laws states that for every action, there is an equ…
Newton's third law of motion
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13. why dont action-reaction forces cancel each other out? action-react…
A. Action - reaction forces act on different objects.
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12. identify the force that is not a type of friction. air resistance s…
D. applied force
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11. a golf ball is hit from the ground at an angle of 12° with an initi…
2.39 s
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10. which of newtons laws of motion explains why objects will sit on a …
Newton's first law of motion
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9. according to the law of universal gravitation, what will happen to t…
the gravitational force will increase 16 times
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8. a paper airplane is thrown with an initial velocity of 2.4 m/s and a…
2.08 m/s
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7. assuming the acceleration is the same for each of the following obje…
an elephant
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5. a skydiver in free fall experiences several forces. which forces wou…
gravity and friction
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5. which scientist was able to experimentally determine the value of th…
Lord Henry Cavendish
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4. what is newtons first law of motion commonly called? the law of unba…
the law of inertia
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3. which mathematical statement does not accurately display newtons sec…
The option \(a = \sum Fm\) does not accurately display Newton's second law of motion.
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2. a 125 kg runner is traveling at an acceleration of 2.8 m/s². if fric…
390 N
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2. a 125 kg runner is traveling at an acceleration of 2.1 m/s². if fric…
303 N
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1. which forces would be drawn on a free body diagram for the apple sit…
gravity and normal force
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12. what characterizes objective writing? a. emotional appeals b. unbia…
12. B. Unbiased facts 13. D. To support claims 14. B. Precise words 15. B. Time - based sequence
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the following question has two parts. answer part a first, and then par…
Part A: fear Part B: We peered from the windows, shades drawn
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which civil liberty do citizens have in the united states? the right to…
the right to due process in court
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the trail of tears involved forced relocations during which years? a. 1…
1. b. 1838 - 1839 2. d. The Senate 3. a. 1830 4. c. Conflicts with existing tribes 5. c. The Trail of Tears
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read the sentences below, filling in the blanks with items from this li…
Andrew Jackson, Tahlequah, 1830, Cherokee, Five Civilized, Worcester, Choctaw, Conflicts, Gold
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a student uses an axe to split wood. which simple machine is the studen…
wedge
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a student wants to use a simple machine to remove a bottle cap. what is…
lever
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how is the input force different from the output force? the input force…
The input force is applied to the simple machine, and the output force is the force the simple machine applies to an object.
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a student wants to decrease the amount of force required to do work. ho…
by increasing the distance over which the force is applied
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which statement best describes a machine? a machine makes work easier b…
A. A machine makes work easier by changing the strength or direction of a force.
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read the sentences below, filling in the blanks with items from this li…
1. Trail of Tears 2. 1830 3. Panic of 1837 4. South Carolina 5. Spoils System 6. Nullification Crisis 7. Pet Banks 8. Common Man
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which tribe was not part of the trail of tears? a. choctaw b. apache c.…
- First question: B. Apache - Second question: B. Fair exchange - Third question: A. Economic depression
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what was the goal of the spoils system? a. reinforce authority b. resol…
1. d. Democratize jobs 2. a. Forced relocation 3. c. Civil War 4. d. Tariff nullification 5. a. Indian Removal 6. c. State vs. federal 7. a. Jackson's presidency
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what is a joule, which is a unit of work, equal to? a newton times a me…
a newton times a meter
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what is the definition of energy in scientific terms? the motion of an …
the ability to do work
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a student pushes a 40 - n block across the floor for a distance of 10 m…
400 J
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how is power defined? the rate at which work is accomplished the total …
the rate at which work is accomplished
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which action is not an example of work? pushing a box across the floor …
holding a tray in the cafeteria line
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directions the following paragraph is confusing because it contains som…
- **Fragment Identification (underlined once)**: - \underline{Although penguins look clumsy on land.} - \underline{They a streamlined torpedo shape.} - \underline{Use their webbed…
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run-on sentence worksheet een of the following sentences are run - on s…
1. Period: "My father retired from the Air Force last year. He is writing a book about his experiences."; Semicolon: "My father retired from the Air Force last year; he is writing…
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the age of a rock is determined by the function, ( a(t)=a_{0}e^{-0.0000…
\(693,000\)
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question # 5 multiple select how do environmental regulations created b…
B. Some EPA regulations limited how much noise any vehicle may emit, which impacts airplanes and horns on road and rail vehicles. C. A recent EPA regulation severely reduced how m…
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measure the amount in container b in ounces. enter a number. container b
14
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solving systems of linear equations: substitution cassandra is comparin…
\(10\)
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which phrases describe sedimentary rock? check all that apply. includes…
includes fine particles of sand, has many layers, formed from material that was eroded
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battle of nations battle of the nile battle of trafalgar continental sy…
1. Directory 2. Corsica 3. The Little Corporal 4. Rosetta Stone 5. Battle of the Nile 6. Consulate 7. Napoleonic Code 8. Louisiana Territory 9. Battle of Trafalgar 10. Continental…
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boyles law states that the volume of a gas varies inversely with applie…
\(27.5\)
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parts of speech (a) draw a line to match each part of speech with its d…
1. b. verb 2. c. interjection 3. c. noun 4. b. adjective 5. a. preposition 6. b. conjunction 7. c. adverb 8. a. pronoun
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8. how can a countrys natural increase rate be calculated? a. subtract …
A. Subtract the Death Rate from the Birth Rate
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14 country f has a cbr of 31 and a cdr of 25. what is the countrys grow…
0.6% ### Question 15
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a. the consulate b. civil code c. dependent states d. allied states e. …
1. D. allied states 2. E. nationalism 3. A. the consulate 4. C. dependent states 5. B. Civil Code
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building dams to help people texas has several major rivers. they usual…
1. B. explain how people change the environment to build dams 2. A. dams help provide water during drought periods 3. B. stopping the flow of water during rains 4. Two benefits: f…
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a. sans - culottes b. bourgeoisie c. principle of intervention d contin…
1. A. sans - culottes 2. C. principle of intervention 3. E. Robespierre 4. D. Continental System 5. B. bourgeoisie
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in the late 19th century, poor hygiene, greater access to mass public t…
D. a greater likelihood of the spread of disease.
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drag each label to the correct location on the image. classify the hypo…
- Falsifiable: - The Great Salt Lake is salty due to a high rate of water evaporation in the desert climate. - Magma leaks up from the mantle below Earth’s surface and spreads out…
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question 10 of 10 where are the electrons found in bohrs atomic model? …
B. The electrons circle the nucleus in specific orbits.
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what device stores charge on two parallel metal sheets? a. a wire b. a …
B. A capacitor
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question 9 of 10 what was ernest rutherfords experiment? a. he measured…
D. He shot tiny alpha particles through a piece of gold foil.
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question 4 of 10 how does the electric potential energy between two neg…
A. It is reduced by a factor of 3.
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calculate the capacitance of a system that stores 1.0 × 10^{-10} c of c…
B. \(1.0\times 10^{-12}\text{ F}\)
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question 2 of 10 in addition to the distance from a charged particle, w…
A. Charge
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what could you do to increase the electric potential energy between two…
D. Reduce the distance by a factor of 16.
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question 6 of 10 what did robert millikan discover? a. he discovered th…
C. He determined an electron's charge.
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a point charge is a model that represents a charge as acting uniformly …
D. It has no volume.
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question 5 of 10 what did thomson discover? a. the neutron b. the elect…
B. The electron
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what could you do to increase the electric force between two charged pa…
C. Increase one particle's charge by a factor of 16.
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what is the electric force acting between two charges of -0.0085 c and …
A. \(4.8\times 10^{10}\space N\)
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in which direction does the electric field point at a position directly…
D. East
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question 4 of 10 how did ernest rutherford change the atomic model? a. …
C. He showed that most of an atom's mass was located in the atom's nucleus.
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when working with electric charges, what symbol is used in equations to…
B. \( F_e \)
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question 3 of 10 what charges must the particles have to create the ele…
B. X and Y are both positive.
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question 3 of 10 the idea that light can act as packets led to what new…
B. Quantum mechanics