物理
运动学、受力分析、电学与方程推导。
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23. a 20kg crate accelerates at 3 m/s². what is the force? mass = 20 ac…
The correct force is \( 60 \, \text{N} \). The initial calculation was incorrect as it used division instead of multiplication according to Newton's second law (\( F = ma \)).
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the diameter of neptune is 30,599 miles. approximate the diameter of ne…
31,000
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the speed - time graphs below represent the motion of a car. match the …
s: - Graph E matches description 7 because the speed of the car increases with time (indicating acceleration). - Graph F matches description 8 because the speed of the car decreas…
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question 6 good credit gives you options. bad credit takes away your op…
D. Both A and B.
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3 multiple choice 1 point all of the following scenarios involve delive…
A. Transdermal application of drugs to treat hypertension (high blood pressure). ### Question 4
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1 multiple answer 1 point the enteral routes of administration, which i…
A. sublingual, B. ocular (or other combinations like A. sublingual, C. nasal; B. ocular, C. nasal) ### Question 2:
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23. what is refraction? the bending of light due to a change in its spe…
Refraction happens because the speed of light changes as it passes from one medium to another with a different optical density, causing the light to bend. ### Question 25
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how much water do you need each day? a two to four gallons b two to fou…
B. two to four quarts
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you get lost and need shelter. what should you do first? a begin cuttin…
C. Look for a natural shelter.
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16. bats, dolphins, and whales use sonar (reflection of sound waves) to…
Echolocation ### Question 17
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what is the purpose of a personal health behavior checklist? to list pi…
D. to identify the areas of personal health that need improvement (assuming the options are labeled A, B, C, D in order. If the original options had different labels, adjust the l…
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what do all good orienteering compasses have? a waterproof case b batte…
D. North/South arrow
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what is an effective way to advocate for a cause? talk to a person in p…
A. Talk to a person in power who can make a change.
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short answer 1. circle one: there are (1, 2, 3, 4, 5) basic categories …
③ (the third option, representing 3 basic categories of insulins) ### Question 2
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what should be done after listing the options when making good health d…
C. Identify the consequences of each option.
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4 earth takes one year to complete its orbit around the sun. about how …
C. A few months
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99. motion on a circle an object is traveling on a circle with a radius…
Angular speed is \(\frac{1}{60}\) radians per second, and linear speed is \(\frac{1}{12}\) centimeters per second.
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the distance - time graphs below represent the motion of a car. match t…
Graph A matches description 2 because it's a straight line with positive slope (distance increases at constant rate, so constant speed). ### Graph B:
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3 why do the two animations appear to move in opposite ways? a because …
B. Because the left animation is a view from space and the right is a view from Earth
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5. if the object below falls at 10 m/s, what is its kinetic energy? 10kg
The kinetic energy of the object is $500\space J$ (joules).
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one would use biofeedback therapy to understand which of the following?…
your physiological reactions to stress
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biofeedback is a method of measuring and reading _________ responses fo…
B. subtle physiological (assuming the options are labeled as A. subtle emotional, B. subtle physiological, C. subtle psychological; if labels differ, adjust accordingly but the te…
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general adaptation syndrome (gas) is the ______ way the body responses …
C. predictable (assuming the options are labeled A: unpredictable, B: varied, C: predictable)
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whatever one believes, it is generally accepted that ______ emotional u…
C. everyone has (assuming the options are labeled A, B, C as A. extremely depressed people have, B. only those who achieve self - actualization do NOT have, C. everyone has)
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what is the theory of emotion which states there is a physiological and…
B. Cannon Bard Theory
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the distance - time graphs below represent the motion of a car. match t…
1 - C (The car is stopped as distance doesn't change with time in graph C), 2 - A (Constant slope means constant speed in graph A), 3 - D (Decreasing slope means decreasing speed …
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which of the following is the bodys adaptive response to a situation? t…
instincts
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which of the following is the bodys adaptive response to a situation? t…
instincts
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lets check in what is the length of the hypotenuse of a right triangle …
B. 17 inches
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women’s style of communication has often involved _________. a. telling…
c. understanding others’ emotions
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extrinsic motivation is when ___________ is required to get one to do s…
some reinforcer
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4. what simple machines make up the compound machine below? how do they…
The compound machine (corkscrew) is made up of a screw, levers, and gears (or wheel - axle - like gear parts). The screw converts rotational motion to linear motion to pierce the …
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22 what is the speed of the ant? (answer in mph) 0.32 mph 26 light trav…
Question 26: $\approx 366.67\ \text{s}$ Question 30: $\approx 15.96\ \text{mph}$ Question 34: $0\ \text{miles}$ Question 38: $0\ \text{mph}$
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the distance - time graphs below represent the motion of a car. match t…
1. The car is stopped: C 2. The car is traveling at a constant speed: A 3. The speed of the car is decreasing: D 4. The car is coming back: B
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question number | problem | numerical answer | units of measurement 2 |…
| Question Number | Numerical Answer | Units of Measurement | |-----------------|------------------|----------------------| | 2 | 15.9 | miles | | 6 | 3.5 | miles | | 10 | 3.18 | …
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when cranking an engine after installation, to prevent possible starter…
c. 20 seconds at a time
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all of the following are typical engine break-in procedures, except: a.…
c. Measuring the camshaft bearing clearance.
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if required during the initial engine break - in period, run the engine…
d. High idle
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which of the following best describes the purpose of technology? a. to …
B. To find creative solutions to problems
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which of these technologies can scientists use to track animals by the …
D. Acoustics
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if there is a vacuum pocket at the thermostat, the air pocket may preve…
b. Opening
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meditation utilizes ones diminished sense of ______. the use of biofeed…
C. self, space, and time (assuming the options are labeled, and this is the correct one; if original labels differ, adjust, but the content "self, space, and time" is the correct …
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name: date class period 3. is object e or object f more dense? assume t…
The slope of Substance A is \( 1\space g/mL \), which represents its density (mass per unit volume). The slope of Substance B is \( 0.5\space g/mL \), which also represents its de…
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which of these fields of science is the study of the quality, distribut…
D. Hydrology
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biofeedback is a method of measuring and reading ______ responses for b…
A. subtle physiological
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1. describe how the energy changes in the picture above when the person…
When the person lets go, the drawn bow (with elastic potential energy due to its deformed state) transfers energy: the bow’s elastic potential energy decreases as it is converted …
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complete the paragraph. each word is used only once. imagine that you h…
1. At Earth's center is a metallic **core**. 2. The red marble in this model is the **inner core**, which is made of solid iron measuring about 6,000°C. 3. The yellow clay around …
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which body temperature can indicate that your body is fighting off an i…
B. Above 98.6
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which of these tasks would a hydrologist be most likely to perform? a. …
A. Estimating the amount of groundwater in an aquifer
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which of the following is the best definition of technology? a. the pur…
C. Practical applications of scientific knowledge
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how are celsius temperatures converted to fahrenheit temperatures? mult…
A. multiply the number by \(\frac{9}{5}\) and then add 32
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what happens when the temperature of an object increases? the objects p…
A. The object's particles move faster.
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to remove a tight - fitting lid from a jar, megan runs the lid under ho…
C. The temperature increases, and the lid expands. (Assuming the options are labeled A, B, C, D with C being "The temperature increases, and the lid expands")
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1. transverse or longitudinal (compression) wave? which wave moves the …
Transverse wave ### Question 2
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19. explore1_what type of boundary exists at this fault? type a respons…
Transform boundary ### Question 20
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scientific research shows that earths climate is changing due to human …
B. It can help us cool down the planet before it gets too hot.
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no additional details were added for this assignment. which statement e…
An object’s thermal energy is caused by the movement of the tiny particles that it is made of.
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no additional details were added for this assignment. which statement i…
The objects' temperatures have both changed by the same amount.
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details no additional details were added for this assignment. when is t…
D. when both objects have the same temperature
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a driver touches a car’s steering wheel on a hot day. how is heat trans…
A. conduction
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why does an ice cube melt when you hold it in your hand? your hand tran…
Heat is transferred from your hand to the ice cube.
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how are the ideas presented in these paragraphs?summers in death valley…
4. First paragraph describes conditions in Death Valley and the second explains what causes them.
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18. engage_tectonic plates cover earth. match each plate with the ocean…
### N. American Plate: - Atlantic Ocean: ☑️ - Arctic Ocean: ☑️ - North America: ☑️ - Asia: ☑️ - Europe: ☑️ ### Pacific Plate: - Pacific Ocean: ☑️ ### S. American Plate: - Atlantic…
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17. engage_pangaea was not the only supercontinent to exist. in fact, t…
1. Vaalbara 2. Rodinia 3. Pannotia 4. Pangaea 5. Gondwana 6. Laurasia
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15. engage some people believe that tectonic plates are static, meaning…
To solve this, we first identify the three types of tectonic plate movements from the arrows: **Convergent (→←)**, **Divergent (←→)**, and **Transform (↑↓)**. Then we match each m…
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a growth chart is used in monitoring the growth and development of a ch…
A. Her height is within normal range; her pituitary gland is functioning normally.
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a growth chart is used in monitoring the growth and development of a ch…
yes
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resistance is the stage of stress where which of the following occurs? …
One copes and adapts to stressors.
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exhaustion is the stage of stress where which of the following occurs? …
One is physically and emotionally spent.
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alarm is the stage of stress where which of the following occurs? one c…
D. One fights back and sometimes goes crazy (assuming the options are labeled A, B, C, D with A being "One copes with and adapts to stressors", B being "One grows emotionally as a…
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8. humans live in the ______ era. 1 pts. a. precambrian b. paleozoic c.…
C. Cenozoic
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switch to code view index.html metadata grouping resources table sectio…
1. `<!DOCTYPE html>` 2. `<html>` 3. `<head>` 4. `<script src="https://cdn.js..."></script>` 5. `<script src="https://cdn.js..."></script>` 6. `<script src="https://cdn.js..."></sc…
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choose all that apply 5. 1 pts. in “relative dating” scientists use ind…
B. figure out if a fossil is younger or older the index fossil which in turn depends on if the fossil is above or bellow the index fossil in the rock strata C. only get a rough AP…
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3. time it takes for 1/2 of a radioactive isotope to decay. 1 pts. a. c…
C. Half-life
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2. older rock strata are found ______ younger strata. \______ dating\ u…
D. below, relative
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origin of earthquake inner core outer core drag and drop the correct ch…
To solve this, we analyze seismic wave behavior through Earth's layers: ### Site A (outer region, likely mantle/crust): S - waves can't travel through liquid (outer core), but P -…
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health psychology involves ______ through physical health. preventing e…
B. preventing illness
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13. explore1 scientists analyze two types of seismic waves following an…
- Site A: Both P and S waves - Site B: Only P waves - Site C: Only P waves (Explanation: S waves cannot travel through the liquid outer core, so they are blocked at sites where th…
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the type a personality is one which is ______. competitive, hard - driv…
A. competitive, hard - driving, in control and sometimes aggressive
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multiple-choice question how do you find the distance a ball falls from…
$d = \frac{1}{2}gt^2$
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14. a 6kg cart accelerates at 9 m/s² for 2 m. how much work is done? 15…
\( 108 \, \text{J} \) ### Question 15:
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multiple-choice question how do you find the final velocity of an objec…
A. $v_f = v_i - g \cdot t$
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multiple-choice question what is the acceleration due to gravity on the…
9.8-m/s/s
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a rectangular prism has a base of 85 square inches. the height of the p…
1,020 in³
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2 which of the following is the most likely to happen during a period o…
D. There is an increase in the amount of goods produced.
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a rectangular prism has a base of 85 square inches. the height of the p…
\( 1020 \text{ in}^3 \) (corresponding to the option with \( 1,020 \text{ in}^3 \))
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multiple-choice question which of these objects is in free-fall? choose…
A. A ball that is dropped. B. A ball that is thrown downward after it is released. C. A ball that is thrown upward after it is released.
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the avoidance avoidance conflict presents the individual with ______. a…
B. two negative outcomes (assuming the options are labeled A, B, C with A being "a negative outcome that impacts all other outcomes", B being "two negative outcomes", and C being …
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the picture and sound electronics store has hired jon to work in the wa…
Yes, \( x \) and \( y \) have a proportional relationship because the graph is a straight line passing through the origin \((0,0)\) and the ratio \(\frac{y}{x}\) (height per crank…
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find the volume of a right circular cone that has a height of 15.6 cm a…
$993.0$ cubic centimeters
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what is the volume of a sphere with a radius of 9.1 ft, rounded to the …
$3156.6$ cubic feet
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rainfall in the united states 24% returned unused to sea 69% returned t…
B. About three times as much
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14. in land breeze air currents move from (land, water) to (land, water…
14. land; water 15. evaporation 16. Mountainside 17. The Coriolis effect is a deflection of moving air and water currents caused by the Earth's rotation, occurring across the glob…
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for most people, getting 8 to 9 hours of sleep increases concentration,…
T
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the data points on the scatter plot below show the amount of time spent…
To draw the line of best fit: 1. Observe the **negative correlation** (as TV time (x) increases, homework time (y) decreases). 2. Identify the "middle" of the data cluster (e.g., …
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practice: preparing the work environment page 1: question 1 (1 point) l…
1. Keep walkways free of obstacles (e.g., clutter, cords) to avoid tripping. 2. Use non - slip mats in wet areas (e.g., bathrooms, kitchens) to improve traction. 3. Ensure adequat…
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a major side effect that stress can cause on the gastrointestinal syste…
changes from stress are elevation (not diminishment) and overeating is a behavioral/metabolic effect, not a direct gastrointestinal system side effect. Diminished gastrin would no…
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2 area under the curve problem. the following graph represents the forc…
### Problem 1 (0 - 80 seconds) # Explanation: ## Step1: Analyze the graph's shape The force - time graph from 0 - 80 s can be divided into three parts: a triangle from 0 - 20 s, a…
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part c one of the concerns about rising co₂ levels ocean water is the n…
## Part C: Yes, the experiment would show a negative effect. ## Part D: Ocean fertilization would increase ocean pH (reduce acidity) in waters with elevated CO₂.
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emotional signs of stress include aches and nausea. please select the b…
F