物理
运动学、受力分析、电学与方程推导。
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question 6 during nuclear fusion in the sun, which of the following occ…
Hydrogen nuclei combine to produce a helium nucleus.
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question 5 most of the suns energy is a result of nuclear fusion. nucle…
nuclear fusion.
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question 3 another name for the interstellar matter that will eventuall…
D. nebula
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when a writer wants to deliver a message in the most compact and forcef…
B. poetry
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2. notes are allowed to be used. 3. you may have blank scratch paper fo…
D. hydrogen and helium
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question 1 5 pts one of the final products of the fusion of two hydroge…
a helium nucleus.
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under certain conditions, oxygen gas (o₂) has a density of 0.00134 g/ml…
186567.16 mL
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the graph below displays jimmys morning walk to the bus stop one mornin…
1. TRUE 2. FALSE 3. TRUE 4. FALSE Part 2: 1. Jimmy is stationary. 2. Jimmy is walking away from the house.
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what is the primary goal of the united nations? to punish totalitarian …
To promote peace and cooperation among nations
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question 6 of 10 which of these was legal to do before the passing of t…
A. Marry a person with a different skin color or different ethnic background.
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two trains are traveling down a track. train a has more mass than train…
The train with the smaller mass will require less time to stop than the train with the larger mass.
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multiple - choice question the word \enlightenment\ referring to the pe…
People were informed
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patient case sheets in emmy will alert clinicians when a patient or car…
True
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read the two passages. passage 1 many people think that standardized te…
B. Passage 1 contains a false dilemma, while passage 2 contains a bandwagon appeal.
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a physician order is not required to place a patient on or discontinue …
B. False
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how do we find speed? time x distance distance + time distance ÷ time t…
C. distance ÷ time
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a student records the following measurements for the length of a table:…
The measurements are precise but not accurate.
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select all possible symptoms of tuberculosis (select all 5 that apply):…
Fever or chills Cold/Night sweats Weight loss Shortness of breath Fatigue
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a computer application that trains or teaches content or skills. tutori…
tutorial
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two trains are traveling down a track. train a has more mass than train…
The train with the smaller mass will require less time to stop than the train with the larger mass.
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calculate the kinetic energy of an object of mass 4kg moving with a spe…
$18\ J$
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three dogs are pulling on a stuffed animal. dog a pulls with a force of…
D. Dog C
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planning a 7 - course dinner requires breaking the task down into small…
B. decomposition, abstraction
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in an investigation over force, mass, and acceleration, five different …
Object 3 had the greatest mass. Object 4 had the least mass.
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what is the minimum passing score for the general knowledge portion of …
c. 80% d. zero tolerance a. liability
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14 a type of investigation that allows scientists to control variables …
14. controlled experiment 15. independent; dependent 16. testable
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a turtle is swimming in a stream and pushing on the water with a force …
- The speed of the turtle would decrease. - The turtle would need to apply more force to maintain its original acceleration.
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a student converts 0.0035 l to microliters (μl) using dimensional analy…
$3500\ \mu L$
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how many significant figures are in the measurement 0.02030?
4
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the integration of interactive elements such as text, graphics, animati…
B. interactive media
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a block has a mass of 150 g and a volume of 50 cm³. what is its density…
$3\ g/cm^{3}$
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forces always occur _______. alone in the same direction in pairs
in pairs
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5/15 the net force acting on the object is ________ n.
5
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two students kick a soccer ball at the same time. student a kicks the b…
B. 35 N Right
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until things slowly changed during the last century, womens participati…
"… women's participation in the labor force was limited by traditional cultural, educational, and legal practices."
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the local race track has invited students to visit and see the races. s…
D. Car 1, 138600 N
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a toy car moved along a 1.2 km track in 6 min. find the speed of the to…
B. 12 km/h
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a spaceship has a mass of 20000kg. suppose it travels at 10m/s. find th…
Spaceship's kinetic energy: $1000000\ J$ Car's kinetic energy: $12500\ J$
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a rock falling off the edge of a tall cliff falls 4.9t² meters in the f…
176.4
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9 multiple choice 2 points which of the following creates the least amo…
C. use of drip irrigation systems
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multiple choice 2 points desertification is primarily caused by which o…
overgrazing of livestock
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a 2.75 kg sample of a substance occupies a volume of 250.0 cm³. find it…
11 g/cm³
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read the two passages about school uniforms. passage 1 school uniforms …
Passage 1 uses a logical approach, while passage 2 contains appeals to emotion.
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scientists are concerned about the changing climate and the potential l…
Older and larger - diameter trees, including maples, sequester and store more carbon, reducing atmospheric carbon dioxide and contributing to the carbon cycle between the atmosphe…
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3. how many ml of a 1.5% drug would a 25 lb dog receive, if the dose we…
11.34 mL
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read the two passages. passage 1 raising the minimum wage for workers w…
Passage 1 is more effective because the evidence is logical and does not include fallacies.
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how does a planets distance from the sun influence its characteristic (…
- La distancia de un planeta al Sol influye en su temperatura, atmósfera y composición. - La ignición del Sol liberó vientos solares que impulsaron materiales del sistema solar in…
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read the text about an object in motion. carly was about to play the fi…
when the ball was at the bottom of the hole
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what is the gist of the part of the passage in the box? antibiotics? ma…
Antibiotics can cure many diseases, but if not used properly, they can make illnesses worse.
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which of the following best describes precision in measurement? how clo…
How close repeated measurements are to each other
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calculating kinetic energy ke = 1/2 m v² partner a a ball has a mass of…
Partner A's first ball: 100 J Partner B's first ball: 50000 J Partner A's spaceship: 1000000 J Partner B's spaceship: 562500 J
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6. finding the volume of an irregular shaped object is done by ________…
Placing the object in a beaker or graduated cylinder and measuring the volume change (using the displacement method: Final volume - Initial volume) is how the volume of an irregul…
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lesson 3: \preventing chronic disease\: name at least 3 risk factors th…
Unhealthy diet, lack of physical activity, smoking
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most inventions have at least some negative consequences. so when do th…
Antibiotics cannot cure the common cold, because antibiotics cure diseases caused by bacteria.
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how do antibiotics affect the common cold? antibiotics ? cure the commo…
cannot
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how did the planets form? : rock, dust and other space debris and formi…
- ¿Cómo se formaron los planetas? - Acumulación: Rock, dust and other space debris se acumularon y formaron planetesimales. - A medida que los planetas se hicieron más grandes, co…
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a student needs to convert 0.75 kg to milligrams using dimensional anal…
7.5×10^{5} mg
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a thermometer consistently reads 2°c higher than the actual temperature…
Systematic error; recalibrate the thermometer
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4. the table shows temperatures in an arctic city during one winter wee…
| | Temperature at Midnight ($^{\circ}$F) | Temperature Change From Midnight to Noon ($^{\circ}$F) | Temperature at Noon ($^{\circ}$F) | |---|---|---|---| | Monday | -32 | +20 | -…
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a student is asked to determine the density of an irregularly shaped ob…
Use water displacement in a graduated cylinder
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which metric prefix represents 10^(-3)? centi- micro- kilo- milli- 12/40
milli -
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the refraction of light is commonly a topic of study in physics and phy…
C. The water in the deep end appears shallower than it really is because light traveling from the bottom bends when it reaches the surface.
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correct the statement correct each of the following statements, and bri…
1. Density is a ratio of a substance's mass to its volume. 2. If you have equal volumes of two different substances, the denser substance is heavier. 3. The solid form of most sub…
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decide whether each of the following is a result of global warming. cho…
- Changes in weather patterns: Yes - Increased rates of skin cancer: No - Melting of the polar ice caps: Yes - Increased growing season of crops: Yes - Increased rates of asthma: …
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which would be the least effective medium for traveling sound waves? a …
D. vacuum
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which type of wave would actually slow down when moving from the air in…
B. Light Waves
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the __________ in a measurement include the digits that have been measu…
significant figures
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how could people help reduce the harmful effects of plastic bags? peopl…
People could reuse plastic bags so that fewer bags would become trash.
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a long spring is attached to a wall at one end. a pulse is sent down th…
B. The pulses generate destructive interference.
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with regard to the observer shown in the model? a the volume will decre…
A. The volume will decrease because the train is moving away. The pitch will be lower because the frequency of the sound waves is decreasing.
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doppler effect with trains. the image shows a stationary train indicate…
D. The frequency of the sound from train A will remain the same and the frequency of the sound from train B will decrease with regard to the observer.
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ple help reduce the harmful effects of plastic bags? plastic bags so th…
fewer
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on a crisp autumn morning, sarah could see a mirror image of the colorf…
D. reflected light
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expanded learning read as enslaved people used their music, stories, an…
1. Music was a tool for emotional expression, cultural preservation, resistance, and community - building. 2. They incorporated African spiritual elements like dance, music, and s…
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plastic bags might have solved one problem, but they made another probl…
People could reuse plastic bags so that fewer bags would be needed.
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a racecar is travelling around a track. under what circumstance would y…
B. As the car is moving quickly toward you
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when light encounters a barrier with slits cut it in it, the light will…
A. diffraction
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as an emergency vehicle approaches bob and moves away from jill, how do…
C. The frequency of the siren does not change despite appearances.
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why did plastic bags become popular? they were made by a famous enginee…
D. They made it easier to carry groceries.
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the hammering on a train track is often heard twice by workers farther …
There is no complete graph information for options C and D in the provided content. But among options A and B, option A shows the speed of sound in steel lower than in air, and op…
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the hammering on a train track is often heard twice by workers farther …
There are no complete graphs shown for options C and D. But among A and B, the correct - type of graph would have a taller bar for steel compared to air. Since in option A, the ba…
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two samples of carbon come into contact. a heat transfer will occur bet…
A. The average kinetic energy of A is greater than that of B.
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lesson 2: \preventing infectious\: in your own words list 4 examples of…
Direct ways: Hand - shaking, Sexual contact Indirect ways: Touching contaminated doorknobs, Inhaling airborne particles from a sneeze
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which is the best example of potential energy? holding a basketball in …
holding a basketball in the air
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according to the law of conservation of energy, what will most likely h…
Energy will be exchanged, but matter will not be exchanged.
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15 kl = ______ l a. 0.15 l b. 1500 l c. 0.015 l d. 15,000 l
D. 15,000 L
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which best describes heat? energy that is carried by electric and magne…
energy that flows from a hot mug of tea to a cold hand
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observations and data data are information gathered by observation or e…
Independent variable: Amount of sunlight Dependent variable: Plant height
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which is the best example of how electromagnetic energy is used? a pot …
B. a patient receiving an X - ray in a hospital
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6. choose what we learn in the climax: * 1 point we learn how the main …
6. We experience a moment that is suspenseful, exciting or tense and the turning point of the story 7. We are introduced to the main conflict and it sets the plot into motion
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why does autocorrect sometimes make funny mistakes? when autocorrect tr…
When autocorrect tries to complete a word, sometimes it changes the word to a similar word. That new word may not be what the writer really intended.
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what is boolean logic?
Boolean logic is a logical calculus of truth values (true and false) used for logical operations, decision - making in programming and circuit design.
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1. causes of red scare/mccarthyism: a. when and why was the huac formed…
1a. The HUAC was formed in 1938 to investigate alleged disloyalty and subversive activities due to Cold - War fears of communist infiltration. 1b. McCarthy's motivation was to gai…
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heat flows from the ice cream to the hand. heat flows from the hand to …
Heat flows from the hand to the ice - cream.
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q: an insurgency is a rebellion against a constituted authority in whic…
B. The difficulty of separating insurgents from the civilian population that supports them.
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12 time periods used to describe geological history are not interrelate…
B. False
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11 eons are divided into _. epochs ages periods eras skip 10/12 complete
D. eras
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which of the following inventions of the 1950s made other inventions po…
B. the transistor
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jonas salk became well known in the early 1950s because he ○ starred in…
developed a vaccine that virtually eliminated polio from American society.
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in the midst of the korean war, the disagreement between president trum…
the question of whether UN forces should have invaded China