物理
运动学、受力分析、电学与方程推导。
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sara is looking to buy a single piece of exercise equipment that can be…
1. A. an elliptical 2. D. a gym membership
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3. what is power? power is the energy you expend over a certain amount …
C. Power is the amount of work done in a certain amount of time.
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question 1 (5 points) (02 08 lc) loose - fitting clothes are suggested …
Question 1: A. Involve a full range of motion Question 2: B. register your product for warranties
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2. if it takes you 30 seconds to move a chair 20 meters across the floo…
B. 3.33 joules per second
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what is the frequency of an x - ray wave with an energy of 2.0×10^(-17)…
$3.0\times10^{16}$
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1. what is one watt equal to? 1 joule/second 1 n - m 1 newton x meter
A. 1 joule/second
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a radio station broadcasts on a frequency of 103.7 mhz, which is the sa…
$6.87\times 10^{-26}\ J$
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target reading skill using prior knowledge review your graphic organize…
1. a. Energy is the ability to do work or cause change. 1. b. Work is done when a force causes an object to move, energy is transferred during work - done, and power is the rate o…
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what is the frequency of a blue light with a wavelength of 4.83 x 10^-7…
Coefficient (green): $6.21$ Exponent (yellow): $14$
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4. how much work do you need to do if you use a force of 3 newtons to m…
B. 75 N-m
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a blue light has a wavelength of 483 nm. what is the wavelength in mete…
Coefficient (green): 4.83 Exponent (yellow): - 7
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3. if you exert a force to attempt to move a table across the floor, bu…
A. No
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2 what effect does the ghost of hamlets father have on hamlet that cont…
2. C. Hamlet seeks revenge against Claudius. 3. D. He has mixed emotions over recent events.
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2. what is a joule? 1 foot /lb 1 meter 1 meter per second squared 1 n-m
D. 1 N-m
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12. which of the following statements accurately describes the differen…
a. Deciduous forests primarily consist of trees that lose their leaves in the fall, while coniferous forests are made up of trees that retain their leaves year - round.
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which environmental benefit is common to both incineration and recyclin…
B. Both reduce the amount of waste sent to landfills.
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1. when is work performed? work is when a force is applied to an object…
Work is performed when a force is applied to an object and the object moves.
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the president and congress have different views on climate change. cong…
C. approval of bill by two - thirds of each house of Congress
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4. if sam kicks a soccer ball that has a mass of 10 kg with an accelera…
220 Newtons
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3.3.7 quiz: analyze the quest for human rights and yet, my friends, goo…
D. Good has happened in the world because countries intervened to stop human suffering.
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3. fill in the blank. the amount which an object accelerates depends on…
force
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what is the main function of the executive branch? a. write and pass ne…
c. Carry out and enforce laws and policies
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2. what is the unit of measurement for force? kg kg newton kg/second
C. Newton
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1. if javier has a car with a mass of 250,000 kg and it is acted upon w…
B. 0.0012 meters per second squared
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question 5 (5 points) (02.04 lc) jamie wants to join an in - school spo…
A. Basketball
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4. a skateboarder is moving at 4 meters per second then changes its vel…
0.6 meters per second squared
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according to wiesel, what is the most harmful emotion? a. hate b. anger…
C. Indifference
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3. what is the definition of acceleration? the change in speed the chan…
The change in velocity divided by the time during which the change occurs
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2. if an unbalanced force pushes a toy car in the same direction it was…
The toy car will speed up.
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1. true or false. acceleration can only be positive. true false
False
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17. who developed the scientific method? a. galileo galilei b. isaac ne…
17. c. Francis Bacon 18. c. Classical texts and education
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15. is dandruff contagious? 16. how are dandruff and dry scalp similar?…
15. Dandruff is not contagious. 16. Similar: Both cause flaking. Different: Dry scalp is due to lack of moisture, dandruff due to yeast and inflammation. 17. Oily dandruff: Greasy…
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what causes the aurora borealis (northern lights)? illustrate the capti…
Solar storms on the sun's surface give out huge clouds of electrically charged particles. These particles collide with the Earth’s magnetic field, accelerating down towards the no…
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what emotional state does delia experience after discovering the snake?…
D. panic
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17. which of the following was added to the u.s. constitution as a resu…
17. B. The 13th Amendment - neither slavery nor involuntary servitude shall exist within the United States. 18. C. to reunite the North and South and keep the union intact 19. C. …
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4. which is this the correct variable for the equation \___ = displacem…
A. velocity
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3. true or false. speed is a vector. true false
False
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2. calculate the speed of a car that has traveled 300 miles in 6 hours.…
B. 50 miles per hour
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b. gain control of the confederate capital in richmond and force the so…
c. Union Gains an Edge on the Confederacy
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1. what would be a correct unit of measurement for velocity? north mete…
B. Meters / second
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hints think about what tom wants and how his attempt to achieve his goa…
1. B. "Everything gave way in his mind instantly to one desire that was to get close to the prince ..." 2. D. The country gawkers and London idlers shame the prince into doing som…
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11. which renaissance technique created the illusion of depth in painti…
11. B. Perspective 12. B. The laws of planetary motion
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9. which scientific instrument did galileo improve and use for astronom…
9. c. The telescope 10. a. The Anglican Church
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what causes the aurora borealis (northern lights)? illustrate the capti…
Solar storms on the sun's surface give out huge clouds of electrically charged particles, which interact with Earth's magnetic field and atmosphere to create the aurora borealis.
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use the sentence to answer the question. the mechanic said the car need…
C. the wheel cylinders
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when will be the best time to see the auroraborealis?
Winter months in polar - regions during periods of high solar activity.
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1 the republican rejected the crittenden compromise because they a obje…
1. a. objected to further expanding slavery 2. b. its own states' rights philosophy 3. b. cleaning up conditions in union military camps 4. b. the writ of Habeas Corpus 5. d. Vick…
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discovery question how can you describe velocity? lets start by examini…
Velocity is a vector quantity showing how an object's position changes over time, with both a magnitude (speed) and a direction. For the car, it could start from a certain positio…
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question 10 of 10 what is the primary evidence used to determine the ag…
B. Rock samples from the Moon
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question 9 of 10 earth was struck by a mars - sized body about 4.5 bill…
C. The formation of the Moon
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question 8 of 10 what is the primary evidence used to determine how the…
A. Moon rocks and Earth rocks are made up of many of the same materials.
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a drug is injected into a patient and the concentration of the drug in …
1.5 $(1,1.5)$
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question 7 of 10 which statement describes the interactions between the…
A. Gravity pulls planets toward the Sun.
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what is the region that is located between and is labeled a in the illu…
B. The asteroid belt
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a drug is injected into a patient and the concentration of the drug in …
1.5
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question 5 of 10 why is there so little evidence of the period of heavy…
D. Weathering, plate movements and volcanoes destroyed many of the craters.
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question 4 of 10 which statement best describes the motions of the plan…
A. As planets move closer to the Sun, they speed up.
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question 3 of 10 what happened as the mass of the sun increased during …
B. The gravitational force of the Sun increased.
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question 2 of 10 what is the approximate age of the moon? a. 4.5 billio…
A. 4.5 billion years
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question 1 of 10 which three statements about gravity and the formation…
A. Gravity caused the planets and Sun to have spherical shapes. C. Gravity pulled most of the matter into the center of the solar system. D. Gravity held the pieces of forming pla…
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doctors use the rational expression given below to determine the dosage…
220
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asi se dice el cuidado personal el aseo; el excusado; el servicio; el v…
1. el hilo dental/la seda dental 2. El Salvador 3. No information 4. No information
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what role does squealer play in the story? a) the enforcer b) the propa…
B) The propagandist
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sunspots and weather when will be the best time to see the auroraboreal…
The best time to see the aurora borealis is in 2026 as the aurora borealis is related to solar activity and solar maximums are when solar activity is high. The next solar maximum …
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asi se dice el cuidado personal el aseo; el excusado; el servicio; el v…
1. el hilo dental/la seda dental 2. El Salvador 3. mate 4. caminan
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application exercises with aging, body fat increases and muscle mass de…
99. The percent body fat in women is increasing on the interval $(25,45)$ and decreasing on the interval $(45,75)$. 100. The percent body fat in men is increasing on the interval …
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question 28 of 28 which celestial body is the smallest? a. a nebula b. …
D. Our sun
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question 27 of 28 what would be the effect of adding a proton to a nucl…
C. It would increase the strong nuclear force and increase the electrostatic force.
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question 26 of 28 what must you know about a nuclear reaction to calcul…
A. The difference between the total nuclear mass before and after the reaction
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question 25 of 28 what are the products of a fission reaction? a. a sma…
B. Energy and two or more smaller nuclei
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question 24 of 28 which image below best represents the process of nucl…
A.
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question 27 (multiple - choice worth 3 points) in which state of matter…
A. Solid
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pretest: unit 3 the graph shows neutron number vs. what conclusions can…
C. Nuclei with more than 20 protons typically have fewer protons than neutrons.
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question 22 of 28 which sentence is generally true of red stars? a. the…
D. They are the coldest stars.
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question 21 of 28 what was the role of gravity in the formation of the …
B. Gravity caused the solar system to separate into individual celestial bodies.
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a metal spoon sits in a pot of boiling water. the spoon becomes warm. w…
B. Convection and conduction
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question 20 of 28 which of the following does the big bang theory expla…
B. The beginning of the universe
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question 19 of 28 which celestial body is a very dense, hot, and old st…
D. A white dwarf
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question 18 of 28 how was earths moon formed? a. one of jupiters moons …
D. Earth was struck by a Mars - sized body.
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question 17 of 28 how were hydrogen atoms formed? a. by fusion in large…
C. Through the big bang
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word scramble and label 20. unscramble the words below and then use the…
a. Pustulosis cicatrisans b. Tinea favosa c. Tinea capitis d. Tinea barbae e. Psoriasis
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read the following quote attributed to genghis khan: i am the punishmen…
1. He sees himself as a divine instrument of justice 2. They were destroyed and their people were killed 3. Chinese rebels eventually overthrew the Mongols
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question 16 of 28 how was manganese, a heavy element present in trace a…
B. By fusion in large stars
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when will be the best time to see the auroraborealis? claim: the best t…
The best time to see the aurora borealis will be in 2026 as it is the year of the next solar maximum when solar activity (related to solar spots, solar flares and solar wind) whic…
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question 15 of 28 a deuterium (an isotope of hydrogen) nucleus (mass = …
A. The mass increases and energy is absorbed.
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reasoning: the auoraborealis is related to the number of ______ spots. …
solar; maximum; using historical solar - cycle data and scientific models
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you are a geologist investigating the formation of sedimentary rocks. d…
A. Compaction and cementation
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the andromeda galaxy is pictured. which type of galaxy is andromeda? a.…
A. Spiral
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10. in passage 2, how are the two universal themes, \following credibil…
D. The Red Queen forces Alice to follow her rules, but Alice realizes that she is in the same place in which she started.
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question 12 of 28 why are planets spherical? a. radiation from the sun …
D. Gravity pulls all the matter inward evenly.
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question 11 of 28 which description of energy changes in nuclear reacti…
A. Fission and fusion have similar consequences in terms of both nuclear stability and mass - energy conversion.
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a team of geologists are using a model to study the formation of the hi…
C. A convergent boundary where plates collide, causing the crust to compress and form mountain ranges.
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when will be the best time to see the auroraborealis? claim the best ti…
2030
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question 11 of 28 which description of energy changes in nuclear reacti…
A. Fission and fusion have similar consequences in terms of both nuclear stability and mass - energy conversion.
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question 10 of 28 which option below correctly compares the daily amoun…
A. The radiation given off by the human body is 800,000 times smaller than the average daily dose of background radiation.
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the diagram shows a formation of a subduction zone as two tectonic plat…
Volcano
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question 9 of 28 which sentence describes the process of fusion in the …
C. Fusion occurs in the core and then energy is carried outward.
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question 8 of 28 what is the next step in the life cycle for the sun? a…
C. A red giant
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question 7 of 28 which of the following observations provides the best …
B. The redshift seen in light from other galaxies
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20. unscramble the words below and then use them to label the correct s…
a. Psoriasis b. Alopecia areata c. Tinea capitis d. Seborrheic dermatitis e. Psoriasis