# lucy

Newest questions posted by lucy-
## Physics

A 4.2 kg object is subjected to two forces, F~ 1 = (2.1 N) ˆı + (−1.7 N) ˆ and F~ 2 = (3.2 N) ˆı + (−11.2 N) ˆ. The object is at rest at the origin at time t = 0. What is the magnitude of the object’s acceleration? -
## math

In a Grand Prix automobile race, Speedy Ryder averaged 110 miles per hour for the first half of the course and 130 miles per hour for the second half of the course. Cannonball Carter maintained a constant speed of 120 miles per hour throughout the race. -
## math

Statuary Hall is an elliptical room in the United States Capitol Building in Washington, D.C. The room is also referred to as the Whispering Gallery because a person standing at one focus of the room can hear even a whisper spoken by a person standing at -
## science

Does sound go through a wooden block? -
## History

Explain the Elizabethan beliefs regarding pride. -
## Physics

A cylinder has a diameter of 15cm. The water level in the cylinder is maintained at a constant height of .45m. If the diameter of the spout pipe is .50cm how high is the vertical stream of water?Assume water to be an ideal fluid -
## Math

The model builder has 4 pieces of balsa wood that are 4 cm,5 cm, 6 cm, and 7 cm in length. How many different combinations of 3 pieces can be used to make triangles without breaking or cutting the pieces? List the combinations as inequalities. -
## Social Studies

1.How has geography shaped the history of Arabia and Iraq? 2.Why did Muslims split into Shia and Sunni groups? -
## Social Studies

1.What are the cultural traits of Russia? 2.What is the main religion of Russia? -
## Civics

Special purpose districts are 1. agencies that accept tasks from the national government. 2. neighborhood groups without government 3. local governments designed to meet a specific need 4. regions created only for running state elections -
## English

What is the main conflict in the book, Leaving Home? How does the author us "Italics" in the excerpt, and what is it letting the readers know? What is the true story" element in the book, I Am Malala? What is the purpose of dialogee, and what does it let -
## English

What is the main conflict in the play, Leaving Home? -
## Chemistry

A model rocket is launched straight upward with an initial speed of 45.0 m/s. It accelerates with a constant upward acceleration of 1.50 m/s2 until its engines stop at an altitude of 160 m. A. what is the max height reached by the rocket? B. How long after -
## PAP ALG

the average radius of Jupiter's orbit is 464,779,036 miles, and it travels at an average speed of 28,108 miles per hour. Q: How many years does it take Jupiter to orbit the sun? -
## Math

If three teachers can grade 40 tests in 3 hours, how many hours will it take 12 teachers to grade 480 tests? -
## Math

Find the measure of triangle ADC if A is (3x+2) degree, B is (4x-24) degree, C is (2x+2) degree and D is x+10 degree -
## Social Studies

What effect did United States policy have on the Soviet Unions war in Afghanistan and why did Soviet troops finally withdraw from Afghanistan in 1989? A. With U.S. support, the Soviet Union defeated the Afghan rebel forces. B. During peace talks, Ronald -
## Statistic

15% of m&m's candies in a bag are yellow. If you randomly pull 3 m&ms of the bag what is the probability the first one is yellow and the next two are not? A. 11% B. 22% C. 67% D. 85% My answer is D. 1 - 15% =0.85. I think I'm doing it wrong -
## Statistic

I pick a. Is it correct? Which of the following measurements is likely to have the least variation (the smallest standard deviation)? a. The volume of liquid in a simple of unopened 2-liter bottles of sodas. b. The SAT scores of a class of graduating high -
## Chemistry

After balancing the following redox equation(using small whole-number coefficients), add the coefficients of all species in the balanced equation. Bi(OH)3 + SnO2^(2-) → Bi + SnO3^(2-) (basic solution) --- I separated the equation into two and i know the -
## Math

For what value(s) of b, if any, will the function q(x) = (x^4)/2 +b*x^2 +32x-5 have a derivative of zero AND a point of inflection at the same value of x? -
## math

Santiago, a park ranger, was trying to estimate the number of catfish in a lake. He randomly caught 32 catfish, tagged them, and let them go. Six months later, he surveyed fisherman at the lake about how many catfish they caught that were tagged. His -
## Calculus Question! ASAP!

Hello! I have this problem: x(dx)/sqrt(9-x^2) I was wondering why I can't use trig substitution and substitute sqrt(9-x^2) for sqrt(1-sec^2) and having: integral x = 3sin(theta) dx = 3cos(theta)d(theata) integral 3sin(theta)(3cos(theta))/3cos(theta) having -
## Help! Calculus

I am so confused on how to solve this problem. I have it set up with y's on one side and x's on the other but I don't know what to do from there. Question: Solve the differential equation. The initial condition is y(0) = 1. ((x^2+1)^(1/2))(dy/dx) - -
## Ap algebra

2+3X^2-X^3=0 by use quadratic formula. The answer of textbook is 3.19 So I solved and came out a wrong answer What I did factor out (-X+3)X^2+2=0 Then By quadratic formula, a=1,b=0,c=2. Thus I got sqrt(8)/2 -
## Time Value of Money

Please help me with guidelines on what really is the first thing to do when answering this type of questions on this topic,what is the catch on these topics? -
## Managerial finance 4A

Mr Paul is identified three investment opportunities that he is considering.one is investment A that is expected to pay N$800.00 ayear for three years,followed by N$1000.00 per year for four years. it will pay N$2000.00 at the end of the eighth year. -
## math

there are 32 students 12% got an A.How many of them got A's.i need help converting this percentage to a whole number please help -
## English

The movie called Curcible reveals the church and court both state that all liars will be damned, but only can tell who the real sinners are. What does that mean ? What are they trying to say ? -
## HELP!

Earth's inner core exists at temperatures as high as 7000oC. It exists as a _______ due to the _________. A) solid; high pressure B) liquid; high pressure C) solid; high temperature D) liquid; high temperature -
## HELP!

Which set of numbers is correctly ordered from smallest to greatest? A) 0.009, 0.0099, 0.0909, 0.099 B) 0.0099, 0.009, 0.0909, 0.099 C) 0.0909, 0.099, 0.009, 0.0099 D) 0.099, 0.0099, 0.009, 0.0909 Help ME! -
## Math

The approximate distance of the moon from Earth is 4 x 105 km and the average approximate distance from the Earth to Venus is 4 x 107 km. How much farther is Venus from Earth than the moon? -
## Math ratios

which is equivalent to 4/16 A. 2:4 B. 10:9 C. 10/24 D. 12 to 64 -
## AP Language-Inductive/Deductive

These are pretty hard, at least to me. Please help me check my answers. 1. Most luxuries, and the so-called comforts of life, are not only indispensable, but positive hinderances to the elevation of mankind. With respects to luxuries and comforts, the -
## Spanish 2 Present Subjunctive

Please check my answers. I know I'm missing accents. 1. Os recomienda que ___ otra llave de recepcion. a) pedis b) pidais*** c) piden d) pida 2. Which of the following sentences is correct? a) Es importante tu estudies mucho. b) Es necesario que hacer -
## steve plz help me on my math

Find the perimeter of a rectangular area with a length of 13 inches and a width of 7 inches using distributive property and not using it. -
## Math

You want to buy three books that are on sale at 20% off. The original prices of the books are $2.50, $4.95, and $6.00. How much will you save? -
## english

what are the layers of analysis for 'if i'll why hath it given me earnest of success?' from act 1 scene 3 MACBETH SHAKESPEARE. thank-you. -
## english

'Agape is the highest form of love' Give two arguments with counter arguments to show you have considered more that one point of view. I need help ASAP -
## Math

A 73-ton monolith is transported on a causeway that is 2500 feet long and has a slope of about 2.2°. How much force parallel to the incline would be required to hold the monolith on this causeway? -
## Chemistry

How many grams of ethanol must be added to 500.0 g of water to make a solution that freezes at 0.00 degrees fahrenheit? The molal freezing point depression constant for water is 1.86 degree celsius over moles. -
## School Talk

What happened to "School Talk?" That was kinda helpful. -
## Biophysics

Estimate the flow of oxygen into the cell through a side of the muscle cell squished up against the capillary. (give both moles/sec and # molecules/sec.) -
## Math

Please help me with this step by step show your work problem. |-4b-8|+|-1-b^2|+2b^3 (b= -2) My work |-4b-8|+|-1-b^2|+2b^3 |-4(-2)-8|+|-1-(-2^2)|+2(-2^3) |8-8|+|-1-4|-16 8+8+5-16 16+5-16 5 Could you check my work? If it is incorrect, could you show me the -
## Physics

Find, to 3 decimal place, the frequency of the hour hand of a clock -
## Spanish 2

1. Which of the following is correct? a) Maria estaba cocinando cuando ella se cortaba. b) Maria estaba cocinando cuando ella se corto. c) Maria estuvo cocinando cuando ella se cortaba. d) Maria estuvo cocinando cuando ella se corto. 2. Which of the -
## interior decorateor

Which of the following statements is correct regarding the design concept of emphasis? A. Focal points in a room's architecture must be emphasized with contrasting colors. B. A focal point can't be established in a setting where formal balance is used. C. -
## Music

Can anyone help me find guitar chords for Regina spektor' song a cannon? -
## Physics

A 2.8 kg duck is swimming at 0.35 m/s and a 3.4 kg goose is swimming at 0.75 m/s. Which bird would make the biggest impact on you if it carelessly swam into you? Explain. I'm not sure where to start. Could I have some help please? -
## Physics

A 2.8 kg duck is swimming at 0.35 m/s and a 3.4 kg goose is swimming at 0.75 m/s. Which bird would make the biggest impact on you if it carelessly swam into you? Explain. I'm not sure where to start. Could I have some help please? -
## history

Hi, I have this history question on a past exam paper i'm confused about, and was wondering if you could help? The question: "I write from the battlefield of the Great Push with thousands of shells passing in a tornado overhead, and thousands of unburied -
## Science

A 450-g block is attached to a spring of spring constant 45 N/m and is in simple harmonic motion on a frictionless surface with an amplitude of 7.5 cm. A second identical block, moving at 12 m/s in line with the spring, strikes the first one when the -
## Math

Three picture frames are on a dresser.two are shaped like squares and the other is a trapazoid. how many sides are there in the frames altogether? Please help today -
## Life orientation

discuss the contributing factors that lead to this issue -
## Maths

in a game you have to guess what a number is through some clues the clues you are given are the hundreds digit is twice as large as the thousands digit the ones digit is the largest the sum of the digits is 14 the tens digit is two less than the ones digit -
## Chemistry

What is the pH of a 0.052 Mole solution of HCl? -
## Math 143

What is the probability of not rolling a number larger than 4 with a fair die? -
## Math

Using only sides that are whole numbers, name the dimensions of three rectangles that have perimeters of 14 units. -
## physics

explain the physics concept to why a ship sounds when moving in water? -
## physics

explain the physics principle why the size of tree stem decreases upwards? -
## physics

state or law which explains why a ship can easily sink than overturn? -
## physics

why is it cold in winter and hot in summer basing on physics knowledge -
## mathematics

the age of jane and john add up to 25years.8years ago jane was twice as old as john.how old are they now? -
## physics

the age of jane and john add up to 25years.8years ago jane was twice as old as john.how old are they now? -
## Math

There are24 counters How many counter can you make and why -
## pre algebra

a community has 1316 females. if 47% of the community is female and 16% of all the females are left-handed, how many people are in the community? -
## Math

A shipping crate carrying e-readers has a length of 19 1/3 feet, a width of 7 2/3 feet and a height of 7 5/6 feet. What is the volume of the shipping crate. Please Help......... -
## History

What does this mean? "It is apparent to my mind that the President thoroughly believed the tenure of office act to be unconstitutional and void . He was advised by every member of his cabinet...... "This was a punitive statue. it was directed against the -
## math

Mrs Smith is having a party . She has 24 students . She estimates each student will eat 3/8.How many pizzas should Mrs. Smith order? -
## ICT

List five precautions users should take to protect themselves and their files when they are using a cybercafé. -
## Science

heartworm is a type of worm that enters a dogs body through a mosquito bite. it produces offspring that lodge in a dogs arteries and food off of surrounding cells. which type of relationship is this a. mutualism b. predation c. commensalism** d. parasitism -
## US History

William Penn found Pennsylvania for New England or New Netherlands? Thanks! -
## english

An imperative sentence is to a command as a declarative sentence is to a/an A. statement. B. wish. C. question. D. exclamation. my answer is D -
## english

(1) Jack had been without a car since Monday. (2) The car needed a new battery, and Jack was broke. (3) Although he was embarrassed, Jack called his mother. (4) He felt he had no choice. (5) Fortunately, his mom was happy to help out. (6) She said she had -
## Science

Why the átomo never seen before -
## Ciencias

ocasionalmente los hospitales tienen brote de infecciones por la bacteria estafilococos la cual reciste el tratamiento con antibiótico que una vez fuera efectivo. ¿cual es la explicación más aceptable para esta situación? -
## Ciencias

Porque el estafiilococo es resitente a los tratamiento con antibiotico -
## math

when james planted a tree 5 m from a window the tree just blocked from view a building 50 m away if the building was 20 m tall how tall was the tree? -
## math

when james planted a tree 5 m from a window the tree just blocked from view a building 50 m away if the building was 20 m tall how tall was the tree? -
## Stats

The manager of Lone Star Restaurant believes that the average wait time of the Saturday evening meal is 30 minutes. To test this belief, the manager selects 50 customers at random and computes the average wait time to be 34 minutes. Assume a population -
## English

Has anyone read "The Destructors" who can help me with a few questions? My questions are: The mood on "The Destructors" is best described as humorous horrific adventuresome cold In "The Destructors" Greene uses a lot of ___ in the boy's language to enrich -
## Language Arts

1. In which sentence is the word blander used logically? A. The cook added spices to make the food taste blander B. If you do not like hot food, you should you blander dishes C. In ordinary circumstances, hot sauce makes the food taste blander** D. The -
## English

please help me with this sentence they are many geeks already around the world. -
## Math

Is the simplified form of 2square root of 3 − 2square root of 3 rational Yes or No -
## Math

How do I rewrite this as a radical expression? (3 2/3) 1/6 -
## math

please help me with this!!! How can I rewrite this as a rational exponent? 3 square root 2^7 Thanks -
## Math

write the following equation in slope intercept form 3x+4y=12 I'm lost on this question -
## sciences

All of the____in a given array must be the same type. Element, statement, instructions, loop. -
## English

A verb phrase that acts as a noun is called a(n) participal adverbial infinitive gerund Which of the following is a prepositional phrase in the sentence below? (Applause came from the bleachers.) Applause came came from from from the bleachers My answers: -
## Spanish

Which sentence correctly substitutes the bolded phrase? Carla compro /los anteojos de sol./ Carla las compro Carla lo compro Carla los compro Carla la compro I'm confused because it's los anteojos but I thought los was part of it, and that it doesn't make -
## English

Read the following line from "Not Waving but Drowning." "Poor chap, he always loved larking And now he's dead" a. detached b. pleased c. objective d. critical NOT WAVING BUT DROWNING Stevie Smith Nobody heard him, the dead man, But still he lay moaning: I -
## Algebra

Please check my answer The domain of the following relation: R: {(−4, 8), (8, 10), (5, 4), (1, 6), (5, −9)} is a. {8,10,4,6,-9} b.{-4,1,5,8) c. {-4, 8, 5,1,5} d. no domain exists I think that it is A, Am I right? Thanks -
## MATH

Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2 and the profit on every wrap is $3. Sal made a profit of $1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents Sal's -
## math

I'm so lost I have no idea. Please help Write the equation of the line that represents this graph. Show your work or explain how you determined the equations. graph of line going through ordered pairs (0, 300) and (450, 0) -
## Algebra

Among all pairs of numbers with a sum of 34, find the pair whose product is maximum. Write your answers as fractions reduced to lowest terms. -
## MATH HELP PLEASE

Find two points on the graph of the parabola other than the vertex and x-intercepts. k ( x ) = ( x − 1 )^(2) − 6 -
## Algebra

A rectangular auditorium seats 1960 people. The number of seats in each row exceeds the number of rows by 9. Find the number of seats in each row. Thanks! -
## algebra

The ratio of the tens digit to the units digit of a two digit number is 2:3. The number that results when the digits of the original number are reversed is 27 more than the original number. Find the original number. -
## math

the sum of the ages of two siblings is 23 and the difference between their ages is 7. if frank is the older brother of beth, determine their ages by creating a pair of simultaneous equations and solving them. this is killing me i have been working on it -
## Physics

PLEASE HELP! this is do tomorrow :( I have no clue how to do any of it. A plane is flying horizontally with speed 193 m/s at a height 2010 m above the ground, when a package is dropped from the plane.The acceleration of gravity is 9.8 m/s^2. 1.What is the