物理
运动学、受力分析、电学与方程推导。
-
what force would be needed in order to stop a 27 kg child sledding down…
B. $\frac{216}{5}\ N$
-
what is the force acting on an object that experienced a 925 n·s impuls…
B. \(\frac{925}{6}\ N\)
-
12 which of the following best defines an impulse? a a change in moment…
D. Both A and B
-
a rifle is fired horizontally and travels 200.0 m e. the rifle barrel i…
322.6 m/s
-
a 5 kg blob of putty moving at 7 m/s slams into a 5 kg blob of putty at…
C. $\frac{7}{2}$ m/s
-
a 4.0 kg firecracker originally at rest explodes into two pieces. the 1…
A. 6 m/s
-
what determines the momentum of an object? (select all that apply) a ma…
A. Mass, D. Velocity
-
at an amusement park bumper car x moves at 2.5 m/s toward bumper car y,…
B. The momentum of Car X decreases and the momentum of Car Y increases.
-
what is the change in velocity of a 1323 kg truck that experiences an i…
$0.23$
-
japanese robot to get artificial intelligence by yun kageyama, modified…
1. Softbank is incorporating IBM's AI into Pepper. 2. Watson in call centers gets callers to the right solution faster. 3. Watson can learn like a human brain and understand proba…
-
what is the change in velocity of a 1323 kg truck that experiences an i…
$0.23$
-
a 4,000 - kg truck is traveling north at 8 m/s, and a 1,200 - kg car mo…
B. The truck has less momentum than the car.
-
what, to the slave, is the fourth of july? by frederick douglass on jul…
He is demonstrating the diverse skills and humanity of Black people
-
5 rank the following objects in terms of momentum. (greatest momentum a…
1. A 2,000 - kg van driving at 9 m/s 2. A 500 - kg car traveling at 16 m/s 3. A 4,500 - kg truck rolling at 0.4 m/s (assuming mass) 4. A 30 - kg child running at 4 m/s (assuming m…
-
rank the following objects in terms of momentum. (greatest momentum at …
1. A 1000 - kg van driving at 9 m/s 2. A 500 - kg car traveling at 16 m/s 3. A 4500 - kg truck rolling at 0.4 m/s 4. A 50 - kg child running at 4 m/s 5. A 0.2 - kg ball rolling at…
-
the diagram below shows two hockey pucks sliding toward each other on a…
$35\ m/s$
-
what is the momentum of a 26 kg object moving with a constant velocity …
$1066$
-
2 the table below describes the motion of balls x and y. which of the f…
D. Ball X has a greater momentum than Ball Y because it has a greater velocity
-
1 which will have a larger momentum when moving at the same speed: a 2,…
A. The truck because it has a larger mass
-
vancouver, which is indicated by the star on the map, falls within whic…
Temperate
-
23. the first ingredient on a food label is the one that occurs in the …
23. True 24. Wash hands thoroughly before handling food. 25. Nausea, diarrhea 26. It often leads to overeating of unhealthy foods and doesn't address underlying emotional issues. …
-
use the equation below to find v, if u = 18, a = 6, and t = 4. v = u + …
$42$
-
question 5 of 5 what restrictions were european visitors forced to obse…
None of the above options are correct. But if we have to choose the least incorrect one, none of these restrictions were typical during Qian Long's time. If forced to pick, we not…
-
a slingshot is used to launch a stone horizontally from the top of a 20…
a) $t\approx2.02$ s b) $v_{0x}\approx17.82$ m/s c) $v_{y}\approx19.82$ m/s d) $v_{x}\approx17.82$ m/s e) $\theta\approx48.0^{\circ}$ For the ball: The landing spot is $0.90$ m fro…
-
which of the following best illustrates cultural diffusion from the us …
The popularity of American fast - food restaurants in Europe and Asia.
-
which sentence from leave la jolla’s sea lions alone best provides a re…
Claiming that the sea lions pose a major health and public safety problem, the La Jolla Town Council and Task Force on California Sea Lions has issued a "Call to Action" with memb…
-
#3 imagine a crime scene involving: (a) a suspicious liquid found near …
## Question 3: Forensic toxicology analyzes the liquid, forensic serology the fingerprint, and forensic ballistics the bullet - casing. ## Question 4: Collaboration is key as diff…
-
warning: danger ahead 5 a lack of rules or safety regulations meant wor…
C. standards enforced by an outside authority
-
f=ma is the equation for what law? 1 point newtons 1st law of motion ne…
1. B. Newtons 2nd law of motion 2. C. the change in an object position based on a reference point.
-
industrial structure of workforce: 1880 & 1920 percentage of workforce …
Manufacturing jobs increased while agricultural jobs decreased
-
the main purpose of the section titled \environmental costs\ is to * 5 …
examine the environmental impact of throwing away excess food.
-
14. which of the following is not one of the four basic steps for preve…
14. B. chop 15. D. food additives 16. A. True 17. B. False
-
a 5 n force is applied to a 3 kg ball to change its velocity from +9 m/…
# Explicación: ## Paso 1: Identificar los valores dados $m = 3\ kg$, $v_i=9\ m/s$, $v_f = 3\ m/s$ ## Paso 2: Aplicar la fórmula del impulso El impulso $J=m(v_f - v_i)$. Sustituyen…
-
use the given conversion factor to convert 4 l to cups. 1 l = 4.2 cups …
16.8
-
multiple - choice question in relation to the base unit, where do prefi…
B. Before the unit
-
abusing alcohol can result in cirrhosis, which is damage to which organ…
Liver
-
which of the following is not a metric base unit? liters feet grams sec…
B. Feet
-
multiple - choice question what does bac stand for? body alcohol concer…
B. Blood Alcohol Concentration
-
multiple - choice question what is the metric system based on? imaginar…
D. Powers of ten
-
the velocity, v, of an object with mass, m, and kinetic energy, ek, is …
| $v$ | $0$ | $2$ | $4$ | $5$ | | ---- | ---- | ---- | ---- | ---- | | $E_{k}$ | $0$ | $50$ | $200$ | $312.5$ |
-
a person will experience \blackouts\ if alcohol impedes the brain neuro…
True
-
what is the metric unit for measuring mass? meters grams liters seconds
B. Grams
-
based on the map, which of the following would best describe denvers si…
On a mountain
-
nothing can describe the confusion of thought which i felt when i sank …
- He recognized his limitations: contributes to the plot by showing how Robinson Crusoe's determination - He applied strategy to the need at hand: contributes to the plot by showi…
-
when using site and situation, geographers are examining- - how outside…
How outside factors encourage the development of cities.
-
in the area between the appalachian mountains and the rocky mountains, …
Mostly flat, semi - arid grasslands that support large - scale farming.
-
what is the definition of a \hypothesis\ in scientific research? a prov…
A proposed explanation based on limited evidence
-
a. your bodys main source of energy is mark only one oval. carbohydrate…
A. carbohydrates B. cholesterol C. Minerals D. fiber
-
if a scientist finds a result that does not fit the expected pattern, w…
B. Anomaly
-
exam 1 (nutrition modules 10) 1. email* 2. the process by which your bo…
2. nutrition 3. calorie
-
why might an author choose the word nosey instead of curious when descr…
1. 'Nosey' carries a negative connotation suggesting inappropriate interest. 2. 'Slim' suggests an attractive, healthy appearance while 'skinny' may imply being too thin. 3. It cr…
-
4. foods your body needs to grow, repair itself and supply you with ene…
4. A. nutrients 5. D. It ensures that you will never get sick. 6. A. family
-
c. vocabulary. solve the crossword puzzle using vocabulary from the rea…
3. Representative democracy 7. Junta 9. Autocracy 10. Direct democracy 1. Theocracy 2. Dictatorship 4. Democracy 5. Oligarchy 6. Anarchy 8. Monarchy
-
what if the driver of the ferrari 550 was cruising along and suddenly h…
She was going approximately $32.15$ mph when she hit the brakes.
-
what is the relationship between the direction of surface winds and the…
Winds rotate clockwise around a center of high pressure and counterclockwise around a center of low pressure.
-
cart a is pulled with a 2 newton force for 2 seconds, and cart b is pul…
A. Carro A
-
analyze the text support your responses with evidence from the text. 1 …
1. Answers will vary depending on the actual comparison in the poem. One must look for unexpected contrasts. 2. Donne uses earthquakes and planetary motion to show different aspec…
-
some scientists have predicted that buildup of greenhouse gases will co…
A. Increased atmospheric carbon dioxide will cause increased ocean surface temperatures.
-
sources of carbon dioxide in the atmosphere carbon dioxide is one of th…
electricity and heat generation
-
1 multiple choice 1 point what is the equation for calculating the mome…
1. C. $p = mv$ 2. D. $6\ m/s$
-
sources of carbon dioxide in the atmosphere carbon dioxide is one of th…
Do humans release more carbon dioxide into the atmosphere than natural phenomena?
-
climate change is caused by a combination of human and natural factors.…
C. drastic changes in weather patterns
-
background info the social and economic fallout from the covid - 19 pan…
Equal access to opportunities in education, employment, and decision - making; elimination of gender - based violence; equitable distribution of unpaid care and domestic work.
-
climate change is caused by a combination of human and natural factors.…
drastic changes in weather patterns
-
1. in which direction is the front at d moving? 2. what kind of front i…
1. Southeast 2. Cold front 3. Thunderstorms, strong winds, drop in temperature 4. Cold air mass 5. Warm front 6. Northeast 7. Light rain or drizzle, warming temperatures 8. Cumulo…
-
aviation tools: question 11 of 38 tool. the ballpeen hammer is sized by…
B. The diameter of the face of the head.
-
directions: select the correct answer. complete the statement about the…
atmospheric composition
-
aviation tools question 9 of 38 tool. a common screwdriver should fill …
A. 75%
-
aviation tools: question 8 of 38 tool. the phillips is different from t…
B. By have a more blunt point.
-
1. name two core gameplay mechanics commonly found in the strategy game…
- Gestión de recursos - Toma de decisiones estratégicas
-
aviation tools question 7 of 38 tool. pin punches are sized by: a diame…
A. Diameter of the face.
-
the big six and the temperature danger zone hot food should be cooled f…
True
-
answer the following questions: 1. name two core gameplay mechanics com…
1. Gestión de recursos 2. Toma de decisiones
-
aviation tools question 5 of 38 tool. the adjustable wrench would be th…
A. An odd sized nut.
-
the big six and the temperature danger zone temperature danger zone 41-…
A. 41 - 135
-
the big six and the temperature danger zone the big six salmonella typh…
Salmonella Typhi, Non typhoidal Salmonella, Shigella, Hepatitis, Norovirus, E. Coli
-
the big six and the temperature danger zone shingella, mayonaise, peopl…
C. All of the above
-
aviation tools question 1 of 38 how can the dimensional inspection of a…
C. Telescopic gauge and micrometer.
-
1. what kind of front produces gentle rain showers? 2. what kind of fro…
1. Warm front 2. Occluded front 3. Cold front 4. Stationary front 5. Warm front 6. C. density differences 7. B. warmer, less dense air 8. Warm front; it provides gentle, soaking r…
-
the big six and the temperature danger zone typhoidal salmonella comes …
People
-
the big six and the temperature danger zone the big six is all about th…
Sanitation
-
match each word with its definition. write the letter on the line. 1. r…
1. c 2. d 3. a 4. b
-
select the gerund or gerund phrase. in baseball, bunting can be a good …
bunting
-
check whether the given metric notation is correct. if the metric notat…
A. The metric notation is correct.
-
question 9 (1 point) napoleon did all of the following except defeated …
Question 9: A. defeated the British at the battle of Trafalgar. Question 10: False
-
what is the benefit of baby steps in science occurring as small bits of…
B. Scientists refine and expand on earlier ideas.
-
a sleep medication is available as 0.15 milligram caplets. the patient …
4
-
which sentence most likely comes from an allegory? simon couldnt help b…
Jealousy quarreled with Forgiveness, but eventually Forgiveness won the argument.
-
the advancement of science is a smooth and predictable process. true fa…
FALSE
-
solve the following using this ratio. $\frac{263\text{ grams dental sto…
$404$
-
check whether the given metric notation is correct. if the metric notat…
B. The metric notation is incorrect. The correct metric notation is 0.44 grams.
-
which accumulates over time in order for science to progress? a materia…
D. evidence
-
if you have observed something about the world and want to investigate …
C. Ask a question.
-
use a proportion to solve the problem. use the fuel factors given in th…
8
-
select the dependent clause. before you pour concrete for a new drivewa…
Before you pour concrete for a new driveway
-
what produces evidence that helps answer important questions or leads t…
B. an investigation
-
scientists start by asking a question about something. what is the init…
D. hypothesis
-
cody wonders if there is enough iron in his vitamins to be attracted by…
A. There is enough iron in my vitamins to be attracted by a strong magnet.
-
when the pressure of a confined gas is doubled at constant temperature,…
B. law
-
which outcome of the scientific method offers a scientific explanation …
B. theory