物理
運動學、受力分析、電學與方程推導。
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1. convert the following: 5 meters = ______ km 2. convert the following…
1. 0.005 2. 3000 3. 700 4. 2500 5. 0.000045 6. 770 7. 3700 8. 0.02 9. 0.044 10. 25000 11. 88000 12. 95000
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if the current in each wire is the same, which wire produces the strong…
a 1 - mm - thick coiled wire with ten loops
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which three types of electromagnetic waves have longer wavelengths than…
C. microwaves, radio waves, infrared light
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farah is doing an experiment that involves calculating the speed of a l…
The speed of the wave will increase.
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question 9 of 10 which benefit does a community experience when its mem…
B. People will likely spend less money on medical services
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plants appear green because they do not absorb the green wavelengths of…
They are reflected
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the thermal energy in a hot iron flows into a shirt. what can possibly …
The iron is warmer than the shirt.
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question 8 of 10 a man who maintains a healthy weight by eating a balan…
A. By decreasing his risk of suffering from high blood pressure
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question 6 of 10 true or false: a person should get as little sleep as …
B. False
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a circuit contains two light bulbs connected in parallel. what would ha…
The brightness of each bulb would remain the same even though the total resistance of the circuit would decrease.
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which of these actions would decrease heat transfer between two objects…
reducing the time of their contact
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homework due friday 9/19 illustrate the three states of matter: solid l…
Solid: Definite shape and volume, particles closely packed. Liquid: Definite volume, takes container's shape, particles more spread - out than solids. Gas: No definite shape or vo…
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a 150 - kg object takes 1.5 minutes to travel a 2,500 - meter straight …
-1.11 m/s²
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question 4 of 10 what health consequence is most likely to result from …
B. Obesity
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a 150 - kg object takes 90 seconds to travel a 2,500 - meter straight p…
-1.11 m/s²
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what would increase the speed of a sound wave? a wave passes from a sol…
The medium increases in temperature while remaining in the same phase.
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the field lines around one end of a bar magnet are shown below. based o…
It is a south pole because the field lines enter the magnet at this end.
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4.6.2 test (cst): regional and transregional interactions question 4 of…
A. Both had the power to send armies across Europe.
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what is the correct interpretation of this diagram? up and down forces …
Up and down forces are balanced. The force toward the right is greater than the force toward the left. The object will move toward the right.
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a magnet placed against the wall of a metal shed falls to the ground, w…
The shed is made of iron or steel.
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if the net force on a 75 - n object is 375 n from the left, in what dir…
toward the left
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on a test, helena is defining energy. which must she include in order t…
the ability to do work
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2. what are the normal respiratory rates for adults, children, and infa…
2. Adults: 12 - 20 breaths per minute; Children: 20 - 30 breaths per minute; Infants: 30 - 60 breaths per minute. 3. Use proper ventilation techniques like slow, gentle breaths, g…
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a flashlight has a resistance of 2.4 ω. what voltage is supplied by the…
None of the provided options are correct. The correct voltage is 6V.
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question 4 of 20 which of the following is true of the roman empire and…
B. Both acted as a unifying force in Europe.
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which statement accurately describes a balanced force? a 25 - n force a…
A. A 25-N force acts on the left side of the marble at the same time as a 25-N force acts on the right side of the marble.
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which statement describes a person making a risky health decision as a …
D. A student eats five pieces of cake because he can't resist its delicious taste.
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which is the best example of the law of conservation of energy? a baske…
A rolling skateboard slows down because some of its kinetic energy changes to heat.
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two objects are held close together. when they are released, they move …
The objects have opposite charges.
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look at two circuit diagrams that connect the same components in differ…
The total resistance in Circuit A is greater than that in Circuit B. When a bulb in Circuit A goes out, all other bulbs go out. The bulbs in Circuit B are brighter than those in C…
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irene built a circuit that has a resistance of 8.0 ω. what voltage shou…
6.4V (corresponding to the second - option in the multiple - choice list)
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question 8 of 10 which of these most directly impacts a persons physica…
B. Food and nutrition
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question 8 of 10 a persons mental and emotional health is most directly…
C. stress
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jan is holding an ice - cube. what causes the ice to melt? thermal ener…
Thermal energy from Jan's hand is transferred to the ice.
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question 2 of 10 the three parts of the health triangle need to be ____…
B. working together D. in balance
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which change will decrease the electric force between two positively ch…
moving them farther apart
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which types of electromagnetic waves have frequencies that are higher t…
B. X - rays
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jeremiah is studying wave a and wave b. wave a is traveling at 3 hertz,…
Interference would occur.
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question 6 of 10 match each example to the correct category. signs of e…
Signs of emotional health: Taking actions to reach your goals Signs of social health: Resolving conflicts Signs of physical health: Avoiding tobacco, alcohol, and other drugs
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what does historical thinking help you do when reading current events? …
question, contextualize, and compare sources
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which best describes what is required for any sound wave to travel? emp…
any medium
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question 5 of 10 true or false: the purpose of a commercial for a healt…
B. False
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what role did william penn play in the founding of pennsylvania? o he f…
He set up a democratic government with fair trials and elections.
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section 2: two renaissance men - machiavelli, & michaelangelo niccolo m…
1. A formal, lengthy discourse on a subject. 2. Either pamper or annihilate men to avoid revenge; use force when people no longer believe a persuasion; focus solely on the art of …
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a circuit is a path along which electric current flows. how would chang…
Less electric charge would flow in the circuit.
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question 4 of 10 which three components contribute to the state of comp…
B. Social health C. Physical health D. Mental and emotional health
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which type of electromagnetic waves make up the colors of a rainbow see…
visible light
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question 3 of 10 the ____ is made up of glands found throughout the bod…
B. endocrine system
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which term refers to the ability to do work? energy power force motion
A. energy
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metric conversions example: 83.6 cg to g 83.6 cg x 1g/100 cg = 0.836 g …
$1.23\times10^{4}$ cm
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what happened to the majority of dutch colonists after new netherland b…
They stayed in the colony and continued their way of life.
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lisa made the electromagnet shown. what can lisa do to increase the str…
She can increase the number of wire loops.
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what is the kinetic energy of a toy truck with a mass of 0.75 kg and a …
6 J (corresponding to the second option in the multiple - choice list)
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c. one breath every 10 to 12 seconds d. there is no need to assist with…
1. Severe respiratory failure with inadequate spontaneous ventilation 2. Facial trauma or burns preventing mask - fit 3. Pneumothorax 4. Severe hemodynamic instability 5. Inabilit…
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samantha is observing a salt crystal under a microscope. she wants to v…
increasing the strength of the objective lens
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mayha bains - who rules_student docs.pdf saved who rules? true or false…
1. True 2. False 3. True 4. False 5. False 6. True 7. True 8. True
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nolan set up the equipment shown in order to induce a current in a wire…
The magnet needs to be moved through the coils of wire.
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which best describes a difference between electric current and static e…
Electric current is continuous, and static electricity is not continuous.
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what is the potential energy of a 25 kg bicycle resting at the top of a…
735 J
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critical thinking multiple choice read each critical - thinking item ca…
1. B. Jaw - thrust 2. D. suction the airway 3. B. Jaw thrust 4. D. ventilate the patient at a faster rate 5. A. One breath every 6 seconds
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marcus pulls on an stretched coil and observes the following wave motio…
The particles will move side to side over small areas.
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image by pflatau the image above shows a common european weather patter…
D. siroccos
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theresa comes up with four examples of waves: sound wave, ocean wave, l…
D. Hand wave
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which object reflects light with the longest wavelength? a yellow book …
a yellow book
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a(n) ____________ is a warm, dry wind that blows down the side of a mou…
C. foehn
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which is one characteristic shared by electromagnetic and mechanical wa…
Both have a frequency and amplitude.
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image courtesy of nasa spain and portugal (circled on the map above) ar…
D. Iberian
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glaciation has carved out narrow sea inlets between rocky cliffs in sca…
A. fjords
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image courtesy of the cia world factbook the a. atlantic b. arctic c. i…
B. Arctic
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question 10 of 10 the height of a wave or the amount of ____ the wave c…
C. energy
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question 9 of 10 the outer ear: a. vibrates. b. collects sound. c. tran…
B. collects sound
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in northern europe, many reclaimed polders, such as the one in the phot…
D. dikes
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question 8 of 10 sound waves travel through gas, liquid, and solids. a.…
A. True
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question 7 of 10 the characteristic of a sound wave that we hear as pit…
D. frequency
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answer the following questions. 1. compare the light bulb and the telep…
1. The telephone likely made a bigger difference in people's lives as it transformed communication across distances, but the light - bulb also had a major impact on daily life and…
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question 5 of 10 the highest frequency that humans can hear is approxim…
B. 20,000 Hz
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a device that displays the continuous plot of a wave is called: a. an o…
A. an oscilloscope
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image by vxla the great ____________ plain, shown in the photo above, s…
C. Hungarian
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the table gives the temperature (in °f) in five cities at 6 a.m. on the…
(a) $9^{\circ}F$ (b) $77^{\circ}F$
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question 3 of 10 hearing damage is repairable. a. true b. false
B. False
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question 2 of 10 any vibrating object can be a source of sound. a. true…
A. True
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sound is produced by no work at all. a. true b. false
B. False
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what should you do if you are a victim of identity theft? dont worry ab…
B. Alert an adult and report to local law enforcement.
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which strategies have the potential to prevent the spread of disease? s…
B. The development of new vaccines C. Education through social media D. Earlier intervention
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in rock layers, jellyfish fossils are found lower than trilobite fossil…
Jellyfish existed before trilobites and ammonites.
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juanita is from el salvador and has an opportunity to attend a universi…
B. pull factor
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8 what are the costs and benefits of deforestation?
Costs: Loss of biodiversity, soil erosion, water - cycle disruption, increased greenhouse gas emissions. Benefits: Short - term economic gains from timber sales, land for agricult…
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which statement describes the u.s organ donation system? a. the waiting…
B. About 30,000 transplants are performed each year.
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which activity is part of hygiene? a. handwashing b. getting good nutri…
A. Handwashing
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what does an author achieve by giving the reader a challenge in the con…
They encourage the reader to take a specific action
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question 5 of 5 all of the following could be considered health and fit…
A. a financial consultant
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in a concluding statement, when a writer refers back to keywords, metap…
The writer reinforces a message by showing how a particular expert agrees with them.
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which hygiene claim is supported by research? a. regular professional t…
D. Regular hand soap prevents disease just as well as antibacterial soap.
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question 2 of 5 why is it a good idea to explore the health and fitness…
D. All of the above
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what are three advantages of digital x - rays over film x - rays? a. th…
B. They are faster. C. They use a lower amount of radiation.
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analyzing projectile motion represented by a table the table relates to…
2; 2.5
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which system comprises of skin, hair, and other parts of the outermost …
integumentary system
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how does the nervous system influence the respiratory system? (1 point)…
It controls muscle contraction.
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in what way can family most influence the development of chronic diseas…
D. Secondhand smoke exposure
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where does most of the absorption of nutrients occur? (1 point) large i…
C. small intestine