alexa

This page lists questions and answers that were posted by visitors named alexa.

Questions

The following questions were asked by visitors named alexa.

An area in your state has been flooded due to heavy rains. How might scientists from the three main branches of science interact in their study of the flood, its effects, and how future flooding might be controlled? OK, I will bite: What do you think the...

19 years ago

well im doing a science project and theyare asking me to putbranches and make up a question for each but i don't know a good brach well actually there are different branches like botonamy-plants chemistry food physics medicine and many many more ghfvuyhgh...

18 years ago

A buffer is formed by adding 500mL of .20 M HC2H3O2 to 500 mL of .10 M NaC2H3O2. What would be the maximum amount of HCl that could be added to this solution without exceeding the capacity of the buffer? A. .01 mol B. .05 mol C. .10 mol D. .15 mol E. .20...

18 years ago

1. Cl2(g) -> 2Cl(g) 2. H2(g) at 5.0 atm -> H2(g) at 1.0 atm 3. sublimation of solid CO2 4. 2H2(g) + O2(g) -> 2H20(g) 5. PCl5(g) <-> PCl3(g) + Cl2(g) A. The change in entropy will be positive. B. The change in entropy will be zero. C. The change in entropy...

18 years ago

For the isoelectronic series S2-, Cl-, Ar, K+, and Sc3+, which species requires the least energy to remove an outer electron? thanks They all have the same number of electrons (40) in the same shell arrangements, but S(2-) has the least nuclear charge. Th...

18 years ago

unknown element X combines with oxygen to form the compund XO2. If 44.0 grams of element X combines with 8.00 grams of oxygen, what is the atomic mass of element X? X + O2 ==> XO2 8.00 g x (1 mol O2/32 g O2) = 0.25 mol O2. 44.0 g element X must represent...

18 years ago

sulfur trioxide gas dissociates into sulfer dioxide gas and oxygen gas at 1250 degrees C. In an experiment, 3.6 moles of sulfur trioxide were placed into an evacuated 3.0-L flask. THe concentration of sulfur dioxide gas measured at equilibrium was found t...

18 years ago

why would lowering the temp and decreasing the pressure not increase the rate of the reaction: carbon monoxide gas is combusted in the presence of oxygen gas into carbon dioxide. (DeltaH for this reaction is -285kJ.) CO + O2 ==> CO2 + heat decreasing P dr...

18 years ago

Why would [23.8-(.0588)(23.8)] be the proper setup to determine the vapor pressure of a solution at 25 Celsius that has 45g of C6H12O6, glucose (MM=180gxmol^-1), dissolved in 72g of H2O? The vapor pressure of pure water at 25Celsius is 23.8 torr. vp pure...

18 years ago

the reaction: Cr2O7^-2(aq) + Cl- -> Cr^3+(aq) + Cl2(g) My balancing. Cr2O7^-2(aq)-> Cr^3+(aq) +Cr +7H2O +14H+ +6e- Cr2O7^-2(aq)+14H+ +6e- -> 2Cr^3+(aq)+7H2O Cl- -> Cl2(g) +Cl- +2e- 2Cl- -> Cl2 +2e- Cr2O7^-2(aq)+14H+ +6e- +2Cl- -> 2Cr^3+(aq)+7H2O +Cl2 +2e-...

18 years ago

how do i make a number period if i am given a grid and a number of different numbers to work with?

17 years ago

what is the hundredth number and the tenth number? 46.135 is the 1 the tenth and is the 3 the hundredth

17 years ago

What was the first experiment in which B.F. skinner tested the theory of operant conditioning? Details on the experiment? Any help would be appreciated. =)

17 years ago

I don't understand the formula for sodium hydrogen phosphate. Can you please tell me it and explain it?

16 years ago

how do i solve this equation? log3x+log3(x-24)=4

15 years ago

compare the units for primmeter,area,and volume how are they diffrent and how are they the same

15 years ago

how do you do average

15 years ago

john's paint crew knows from experience that its 18 ft ladder is particularly stable when the distance from the ground to the top of the ladder is 5 ft more than the distance from the building to the base of the ladder. in this position, how far up the bu...

14 years ago

Write an equation that satisfies the relationship shown in the table of value. x y -2 0 0 4 2 8 5 14 8 20

14 years ago

how would you solve this equation? 294 sin^2 theta = 196 sin 2 theta

14 years ago

If a car completes a 3.8 mi oval track in 69.7 s, what is the average speed? answer in mph Did the car accelerate? (A.yes the direction of the motion changed or B. yes the speed changed or C. no the speed didn't change)

14 years ago

Which of :acceleration,age,speed,temperature,and velocity are vector quantities? Are any of them scalars?

14 years ago

A car travels in a straight line for 3.7h at a constant speed of 63 km/h. What is the acceleration? Answer in m/s^2

14 years ago

A particle at rest undergoes an acceleration of 2.5 m/s^2 to the right and 3.2 m/s^2 up. What is its speed after 5.9s? Answer in m/s

14 years ago

this is in addition to my previous question (the particle undergoing an acceleration of 2.5 m/s^2 to the right and 3.2 m/s^2 up. what is its speed after 5.9s?) What is the direction with respect to the horizontal at this time? Answer between -180 degrees...

14 years ago

A heavily loaded freight train moves with constant velocity. What is the relationship between the net force on the first car (F1) and the net force on the last car (F2)? A. F1=F2 B. F1>F2 C. F1<F2 D.unable to determine Would it be choice a?

14 years ago

A female gymnast weighs 200 N. If she is hanging stationary from a high bar,how many forces are acting on her? A. one B.five C.four D.two E.three WOuld it be choice A or D?

14 years ago

An elevator is being lifted up an elevator shaft at a constant speed by a steel cable. All fricional effects are negligible. In this situation,forces on the elevator are such that?: A.the upward force by the cable is greater than the downward force of gra...

14 years ago

A toy car is given a quick push so that it moves on an inclined ramp. After it is released, it moves up, reaches its highest point and moves back down again. Friction is so small it can be ignored. What net force acts on the car? A. net force of zero B. N...

14 years ago

Sue and Jenny kick a soccer ball at exactly the same time.Sue's foot exerts a force of 62.3 N to the north. Jenny's foot exerts a force of 115.9 N to the east. What is the magnitude of the resultant force on the ball? Answer in N. What is the direction of...

14 years ago

A man is pulling on a rope with a force of 88N directed t an angle or 20 degrees to the horizontal. What is the x component of this force? What is the Y component of this force? Answer in units of N This is what i did, but i don't know if its right: x: co...

14 years ago

An elevator starts from rest with a constant upward acceleration and moves 1m in the first 1.4 s. A passenger in the elevator is holding a 6.3 kg bundle at the end of a vertical chord. what is the tension in the chord as the elevator accelerates? The acce...

14 years ago

A force is applied to a 2.6 kg mass and produces 2.7 m/s^2 acceleration. What acceleration would be produced by the same force applied to 14.9 kg mass? Answer in units of m/s^2 Here is my work, but i wanted to make sure if it was right or not: 2.6(2.7)=7....

14 years ago

A 4100 kg helicopter accelerates upward at 2.44 m/s^2. The acceleration of gravity is 9.8 m/s^2. What lift force is exerted by the air on the propellars? Answer in N. I wasn't sure which way to approach this problem, so i tried it two different ways: A. 2...

14 years ago

A 2172.5 kg car is coasting along a level road at 34.7 m/s. A constant braking force is applied,such that the car is stopped in a distance of 50.5 m. What is the magnitude of the braking force? Answer in N. Here is my way, but im not sure if im correct: V...

14 years ago

A dragster and driver together have mass 918.8 kg. The dragster,starting from rest,attains a speed of 25.8 m/s in .53s . Find the average acceleration of the dragsters during this time interval. Answer in units of m/s^2. What is the size of the average fo...

14 years ago

On planet x, an object weighs 10.4N. On planet B where the magnitude of the free fall acceleration is 1.48g (where g=9.8 m/s^2 is the gravitational acceleration on Earth),the object weighs 24.6N. The acceleration of gravity is 9.8 m/s^2. What is the mass...

14 years ago

This question refers to my question that was replied to: Sue and Jenny kick a soccer ball at exactly the same time.Sue's foot exerts a force of 62.3 N to the north. Jenny's foot exerts a force of 115.9 N to the east. What is the magnitude of the resultant...

14 years ago

I have a question based off of the response to the question I posted below. Sorry, i wanted to make sure that i clearly understood,so My question about the third solution is: Is the horizontal force zero N? or is it 721.3N? A dragster and driver together...

14 years ago

I have a question based off of the response to the question I posted below. A dragster and driver together have mass 918.8 kg. The dragster,starting from rest,attains a speed of 25.8 m/s in .53s . Find the average acceleration of the dragsters during this...

14 years ago

A block accelerates at 3.3 m/s^2 down a plane inclined at an angle of 26 degrees.Find micro(k) between the block and the inclined plane. The acceleration of gravity is 9.81 m/s^2.

14 years ago

A 4.1 kg object hangs at one end of a rope that is attached to a support on a railroad beoxcar. When the car accelerates to the right,the rope makes an angle of 37 degrees with the vertical. The acceleration of gravity is 9.8 m/s^2. Find the acceleratino...

14 years ago

The horizontal surface on which the block of mass 4 kg slides is frictionless. The force of 30N acts on the block in a horizontal direction and the force of 60N acts on the block at an angle. What is the magnitude of the resulting acceleration of the bloc...

14 years ago

Consider a 626N weight held by two cables. The left hand cable had tension T and makes an angle of theta with the wall. The right hand cable had tension 720N and makes an angle of 27 degrees with the ceiling. What is the tesion T in the left hand cable sl...

14 years ago

A locomotive pulls a series of wagons. Which is the correct analysis of the situation? A. because action always equals the reaction,the locomotive cannot pull the wagons,-the wagons pull backward just as hard as the locomotive pulls forward, so there is n...

14 years ago

You hit someone with a force of 173N. How much force is exerted on you? Answer in units of N.

14 years ago

A student stands on a bathroom scale in an elevator at rest on the 64th floor of a building. The scale reads 845 N. As the elevator moves up,the scale reading increases to 940N,then decreases back to 845N. The acceleration of gravity is 9.8 m/s^2. Find th...

14 years ago

A block of a mass of 1 kg rests on the inclined surface of a wedge of a mass of 2.2 kg. The wedge is acted upon by a horizontal force F and slides on a frictionless surface. The acceleration of gravity is 9.81 m/s^2. If the coefficient of static friction...

14 years ago

A child learns in school that the earth is traveling faster than 100,000 kilometers per hour around the sun, and in a frightened tone asks why we arent swept off. What statement about the motion of the Earth is, on average,true? A. We are traveling slower...

14 years ago

On take off, the combined action of the engines and wings of an airplane exerts a(n) 7767 N force on the plane,directed upward at an angle of 59.1 degrees above the horizontal. The plane rises with constant velocity in the vertical direction while continu...

14 years ago

A block accelerates at 3.3 m/s^2 down a plane inclined at an angle of 26 degrees.Find micro(k) between the block and the inclined plane. The acceleration of gravity is 9.81 m/s^2. This is my work but i am not sure if it is correct: sum of forces on x axis...

14 years ago

A person who looks at a sequence of 14, 12, 10, 8 and decides that the next two terms are 6 and 4 is doing deductive thinking. True False

13 years ago

Samantha needs to solve the equation x2 - 12x = 40. What must she do to each side of the equation to complete the square?

13 years ago

1. How many grams of NaCl are present in 15 mL of a 2.0% solution?

12 years ago

if you had 0.028 moles of copper sulfide, how many grams would you have?

11 years ago

Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0210 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate? Ksp=1.20×10^–5 silver sulfate ksp=4.93x 10 ^-5 calcium sulfate

11 years ago

A tile is the basic unit that makes an entire floor pattern what fraction is white? Green? Yellow? brown?

10 years ago

A tile is the basic unit that makes an entire floor pattern what fraction is white W ? Green G ? Yellow Y ? brown B ? BB B B B B G G B B Y Y Y Y B B W W W W W W B W W W W W W G G Y Y Y Y B B B B

10 years ago

A dog breeder wanted to produce a small variety of cocker spaniel. He mated the smallest dogs from various litters for many generations. This is an example of

10 years ago

Tonya's mother is 1.5 times as tall as Tonya was when she was 6. How tall is Tonya's mother? Use the correct number of significant digits.

9 years ago

what do you call a group of organs working together to perform a specific function?

7 years ago

tissuis are grouped together to form which type of structure?

7 years ago

1. Which of these South Asian countries is an Islamic republic? A. Pakistan B. Bangladesh C. Sri Lanka D. Nepal I believe the answer is A but I want to make sure 2. Why are poverty levels high in much of South Asia? A. high populations and low economic de...

7 years ago

the excerpt from Always Running and the poem Race Politics describe the same central incident. How is the focus on the two versions different?

5 years ago

what number minus 419 equals to 62,772

5 years ago

Which of the following goes against the Aufbau principle? 1s22s2 1s22s12p5 1s22s22p2 1s1

5 years ago

what is the first step to simplify 12-7+9

3 years ago

11.4 Using the Imperfect and the Preterite Together

3 years ago

Which of the following statements describes the best example of how colonization influenced urban design? A. Former retail centers have been replaced by large malls. B. Former ports of trade have been replaced by upscale restaurants. C. Former centers of...

2 days ago

The United States' __________ was patterned after Germany's autobahn. A. flight network B. streetcar system C. cargo and mail transport D. Interstate Highway System Please select the best answer from the choices provided.

2 days ago

Analyze the map below and answer the question that follows. A map of the United States. Lines cross the country, traveling through each state. What does the map above illustrate? A. air traffic flight paths in the United States B. the US Interstate Highwa...

2 days ago

Increased globalization has been caused by all of the following except __________. A. improved technology B. increased transportation speeds C. improved communication speeds D. decreased distances between nations Please select the best answer from the cho...

2 days ago

Which of the following statements provides the best comparison between emerging global cities and struggling global cities? A. Emerging global cities are growing rapidly, while struggling global cities are stagnant or declining. B. Emerging global cities...

2 days ago

Which of the following is not a factor that would lead us to believe that Dublin is a primate city in Ireland? A. Almost half of Ireland’s population lives in or around Dublin. B. No universities are located in Dublin. C. Dublin provides almost half of Ir...

2 days ago

The increasing economic, cultural, political, and social connections between people around the world is called __________. A. the world marketplace B. socialization C. connectivity D. globalization Please select the best answer from the choices provided.

2 days ago

Outsourcing has been particularly detrimental to employment in which American industries? A. manufacturing and customer service B. health care and dental care C. agriculture and food processing D. research and development Please select the best answer fro...

2 days ago

Which of the following statements provides the best analysis of what happened to Detroit, Michigan? A. Accelerated globalization drew manufacturing away from Detroit to other countries. B. Detroit remade itself from a global manufacturing city to a world-...

2 days ago

An agglomeration of multiple cities is called a(n) __________. A. megacity B. metropolis C. conurbation D. urban zone

2 days ago

Which of the following phrases best describes a primate city? A. a city of chimpanzees and orangutans B. a city with more than ten million residents C. a city whose per capita income is among the top ten cities in a country D. a city that is the largest a...

2 days ago

Typical characteristics of global cities include all of the following except __________. A. being at the center of the world’s economy and trade B. being networked with the rest of the world C. being culturally isolationist D. being wealthy and influentia...

2 days ago

Because Tokyo is a city of over 10 million residents, it is considered a __________. A. lower-order settlement B. metropolis C. megacity D. municipal city Please select the best answer from the choices provided.

2 days ago

Settlements that have populations in excess of 10 million people and that connect their countries and regions to the world economy are called __________. A. small cities B. megacities C. megalopolises D. suburbs Please select the best answer from the choi...

2 days ago

The __________ was one of the world’s first subway systems, opening in 1863. A. Los Angeles Metro B. London Underground C. Paris Metro D. Chicago El Please select the best answer from the choices provided.

2 days ago

Answers

The following answers were posted by visitors named alexa.

there is no answer. it doesn't say where anyone besides the man is going, so i guess just one

17 years ago

atlas was a greek god who held the world on his shoulders, it's also a book/map

17 years ago

two girls were born on the same day of the same year, they have the same mother and father. but the girls are not twins how can this be? they're triplets duh

17 years ago

so how do i know which one is correct? If i understand correctly you said it could be Na2HPO4 or NaH2PO4... also i don't understand how there can be +1 Na and then a -3 PO4... wouldn't it then have to be Na3 to balance? sorry i'm really lost

16 years ago

I got ALINEOECHORUSGIRLS? What is that supposed to mean?

16 years ago

how do fish use density in their lives?

Most nouns ending -o and -os are masculine.Most nouns ending in -a and -as are feminin.

12 years ago

The following data relate to direct labor costs for the current period: standard cost36000hours $22 actual cost 35000hours $23 What is the direct labor time variance?

10 years ago

What you want to do is find the slope of all 4 sides and you should get to slopes the same...and follow a regular proof till you say its a trap.then to prove its not isosceles you use the for sides again but this time with the distance formula...and then...

9 years ago

go to IXL its a really good page

its either a or c because india doesn't isolate from other countries because they trade crops

7 years ago

thank you sue you slayyyy :)

7 years ago

it's actually 2.0 mol

6 years ago

David leaves the house to go to school. He walks 200m west and 125m north. How far away is he from his starting point? (the diagonal) explain please

5 years ago

“ask GOD” i love you ashanti

5 years ago

what about number 11

4 years ago

What is the opposite 17

4 years ago

1.c 2.c 3.a 4.c 5.c 6.a I just did this today and this is what the answers were not saying im wrong or right.

4 years ago

whats the answer tho

4 years ago

uggg I need help with this question please somebody help!

your wrong the answers for Conexus academy is 1.A 2.C 3.B 4.C 5.C

4 years ago

Muhammad was the fouder of the Islam and is also considered, in their doctrine, as a messenger and prophet of God. He lived in the period of 570 CE and 632 CE. One of his beliefs was that people were not worshiping God correctly and, after some revelation...

4 years ago

Their development of advanced concepts, techniques and use in production, investment, finance, economic development, and etc. This helped them with the way they had lived their lives

4 years ago

Omg I have this one my dumb test

4 years ago

a. variation of the tomato plants

4 years ago

nice song but i died at boss part at 76 percent

3 years ago

i dont know find it yourself du

3 years ago