Saturday

February 25, 2017
Total # Posts: 1,236

**chemistry**

In part B of my question, I was asked calculate the number of atoms in 0.615 mol of 13C (mass number of this Carbon is 13). I received the correct answer of 3.70E23 atoms. However, I do not know how to do Part C of my question, which asks "Based on your answer in Part B, ...

*September 16, 2012*

**Physics**

Which of the following best describes kinematics? a) Kinematics is a part of mechanics that involves the description of motion. b) Kinematics is the branch of physics that deals with the motion of objects and the action of forces on the objects. c)Kinematics is the study of ...

*September 14, 2012*

**math**

my daughter is working on 5n + 2n - (3-10N) can someone walk me through how to solve problems like this I have not been in school in over 20yrs. I think you have to work () first? but really do not know HELP please thank you

*September 13, 2012*

**math**

Ms.sue may I just know the curtisy of why you help students on this website for years are you a retired algebra teacher

*September 13, 2012*

**math**

Ms.sue may I just know the curtisy of why you help students on this website for years are you a retired algebra teacher

*September 12, 2012*

**math**

Ms.sue may I just know the curtisy of why you help students on this website for years are you a retired algebra teacher

*September 12, 2012*

**algebra**

what is the equation of the given line in standard form. use integer coefficients y=-1.7x+8.5 Please explain not understanding

*September 10, 2012*

**algebra**

Thank you for the help

*September 10, 2012*

**algebra**

what is an equation of the line in point slope form that passes through the given point and has a given slope.(8,-8);slope 3. caon someone explain

*September 10, 2012*

**algebra**

Thanks for the help

*September 10, 2012*

**algebra**

write an equation of the line in point slope form that passes through the two given points.(-2,15),(9,-18).Please explain

*September 10, 2012*

**physics**

i.imgur. com/cqwun. png

*September 9, 2012*

**physics**

i.imgur . com/jXIYL. png is it 20 and 10??

*September 9, 2012*

**physics**

what is the displacement of the ball? i.imgur. com/8ljWh . png i don't know calculus!

*September 9, 2012*

**algebra**

Solve the equation check for extraneous solutions 9[9-8x]=2x+3 please explain

*September 8, 2012*

**algebra**

Evaluate the expression for the given value of the variable(s) [-4b-8]+[-1-b^2]+2b^3; b=-2

*September 8, 2012*

**algebra**

I got that but what I don't understand is the possible answers are y=9/10x+9/10;slope;9/10;y-intercept;9/10 y=9/10x-9/10;slope;9/10;y-intercept;9/10 y=-9/10x+9/10;slope;9/10;y-intercept;9/10 y=9/10x-9/10;slope;9/10;y-intercept;-9/10

*September 8, 2012*

**algebra**

-9x+10y=-9 write the equation in slope-intercept form, what are the slope and y-intercept. I have tried to figure this out but cannot come up with correct answer please help

*September 8, 2012*

**english**

The statement below represents which genre from the early american and colonial period. I want to explain origins of the natural world and its processes. the poetry of anne bradstreet the oral tradition of native americans the journals of william bradford the essay of thomas ...

*September 7, 2012*

**Math**

Rules for counting significant figures are summarized below. Zeros within a number are always significant. Both 4308 and 40.05 contain four significant figures. Zeros that do nothing but set the decimal point are not significant. Thus, 470,000 has two significant figures. ...

*September 7, 2012*

**Physics**

What length of #22 B&S gauge copper wire is needed to make a resistance of 500 ohms? This is what I came up with but don't think it is correct. looked up diameter for #22 gauge wire = .643 mm and converted to m 6.46 * 10^-4. Used Eq. A = (pi)(d^2)/4 => A = (pi)(6.43 * ...

*September 7, 2012*

**Physics**

Suppose you are asked to determine the perimeter of a seven-sided irregular figure. You make the following measurements: Side 1 = 3.2 m Side 2 = 4.8 m Side 3 = 2.000 m Side 4 = 8.94 m Side 5 = 11 m Side 6 = 7.566 m Side 7 = 4.0 m How many significant figures should there be in...

*September 6, 2012*

**Physics**

Suppose that an environmental study determines that a town produces approximately 2,000 lb of trash each day. The study group decides to convert their findings to SI units, using the conversion 1 lb = 0.4536 kg. They report that the town produces 907.2 kg of trash each day. ...

*September 6, 2012*

**physics**

thanks for the assistance, but apparently none of the answers are correct according to my homework checker.

*September 4, 2012*

**physics**

In the problem, please assume the free-fall acceleration g = 9.80 m/s2 unless a more precise value is given in the problem statement. Ignore air resistance. A stone is thrown vertically downward from the roof of a building. It passes a window 15.0 m below the roof with a speed...

*September 4, 2012*

**physics**

(a) What was the initial velocity of the stone? (b) How tall is the building? sorry I added the question to another post, but here it is. Thanks :)

*September 4, 2012*

**physics**

In the problem, please assume the free-fall acceleration g = 9.80 m/s2 unless a more precise value is given in the problem statement. Ignore air resistance. A stone is thrown vertically downward from the roof of a building. It passes a window 15.0 m below the roof with a ...

*September 4, 2012*

**algebra**

evaluate the expression for variables -(4h-1)/1+h;h=2 /-4b-8/+/-1-b^2/+2b^3;b=-2 9c-6d+4c-3d 9/9-8x=2x+3 If anyone could please help me, these I have not been able to figure out. Any help is appreciated. Thank you

*September 3, 2012*

**algebra**

-8<=2x-4<2 solve the compound inequality can someone please expplain this?

*September 3, 2012*

**algebra**

to which set of numbers does the number belong 1.) 5/4 irrational integers rational natural 2.)graph the number on a number line 2/5 I don't know how to do these ones if someone could help and explain

*September 3, 2012*

**algebra**

it's asking to identify a pattern and find the next number in the pattern. 1.) 31,24,17,10 4 -3 -2 3 2.) 0,4,2,10,50 450 250 5 50 If someone could help would appreciate but would like an explanation on how you get it so I can learn. Thanks ahead.

*September 3, 2012*

**Physics**

Can someone help me with this conversion question? Suppose you are told that 15 quarts (qt) = 14.2 liters (L). What is the conversion factor you would use to convert from quarts to liters? What is the conversion factor you would you use to convert liters to quarts? 1) quarts ...

*September 2, 2012*

**poetry**

Line from "To Her Father With Some Versus", Yet for part payment take this simple mite possible answers 1)bedbug 2)a coin of little value ** 3)physical strength 4)possibility How many couplets are in this poem? 1)five 2)six 3)seven 4)fourteen*** Which of the ...

*August 26, 2012*

**math**

solve equation then check for extraneous solution please someone explain this to me. 6/6-4x/=8+4 then one that is solve the inequality s/x+3/4<2 I don't understand these problems and then it says to graph

*August 26, 2012*

**math**

absolute value equation 2/3x-5/-8=8 Can someone help do not understand

*August 26, 2012*

**Math**

If the side of am inverted square pyramid has a length of 75m, what is the lengths of a diagonal?

*August 24, 2012*

**algebra**

Which set of numbers does -55 belon? natural whole integers irrational i'm not sure but leaning towards natural or whole. Can someone please help?

*August 23, 2012*

**business**

Which one of the following tools includes the specific tasks and duties to be performed by an employee? a. job analysis b. job specification c. job description d. skills inventory my answer is B is it correct ??

*July 10, 2012*

**chemistry**

When a 3.90-g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee-cup calorimeter, the temperature drops from 24.5°C to 19.3°C. Calculate DH (in kJ/mol NH4NO3) for the solution process NH4NO3(s) ---> NH4+(aq) + NO3-(aq) Assume that the specific...

*July 4, 2012*

**Spanish**

How can I tell how to change the ending on the words? would number 2 be intersen?

*July 3, 2012*

**Spanish**

ESTRUCTURA | 13.1 The subjunctive with verbs of emotion Emociones Completa cada oración con la forma correcta del verbo apropiado de la lista. Usa cada palabra sólo una vez The words in () are my guess. I need help with clarification and spelling changes. Word ...

*July 3, 2012*

**Spanish**

1. haber 2.va 3.resolver, Im not sure about the rest :(

*July 3, 2012*

**Spanish**

13.2 The subjunctive with doubt, disbelief, and denial Completar Completa cada oración con la forma correcta del verbo apropiado de la lista. word bank haber ir llegar querer resolver ser 1. No creo que el gobierno el problema de la contaminación rá...

*July 3, 2012*

**spanish**

I don't know where to begin and I have tried to change the endings of the words and it still comes up wrong

*July 3, 2012*

**spanish**

Oraciones Transforma los elementos en oraciones usando el subjuntivo o el indicativo. Modelo algunos animales/ ir a morir/ a menos que / haber / leyes para protegerlos Algunos animales van a morir a menos que haya leyes para protegerlos. la ciudad / ir a estar cada vez m&...

*July 3, 2012*

**Accounting 2**

Journalizing liability transaction. The following transactions of denver pharmacies occurred during 2011 and 2012. Louis Welch is general manager of United Tanning Salons. During 2012, Welch worked for the company all year at a $6,200 monthly salary. He also earned a year-end ...

*June 23, 2012*

**MATH 7**

0.25 and the choices they gave me was A. 2 digits B. 4 digits C. 1 digits D. 5 digits

*June 17, 2012*

**MATH 7**

Estimate the number of digits in your answer. 2.00 divide 8

*June 17, 2012*

**Physics**

A block with mass 0.55 kg on a frictionless surface is attached to a spring with spring constant 43 N/m. The block is pulled from the equilibrium position and released. What is the period of the system?

*June 16, 2012*

**Physics HELP**

how do u conver 334 (m/s) to acoustic independence unit? kg(m^2s)

*June 14, 2012*

**Algebra**

(4/x-2)-(7/x^2-4)=1

*June 14, 2012*

**Algebra**

solve:2y^2+8y-24=0

*June 14, 2012*

**Chemistry PLEASE HELP!**

• A compound is known to contain only C, H, and N. • On combustion of a sample of 12.5 mg, 22.3 mg of CO2 and 15.2 mg of H2O were produced. •Use this data to find the empirical formula for the compound. (Please show working out)

*June 12, 2012*

**Chemistry Please HELP!**

calculate the mass of each product formed if 10.0 g of the first reactant is reacted with 10.0 g of the second reactant: NCl3 + 3 H2O → 3 HClO + NH3 (Please show me full working out)

*June 11, 2012*

**Physics please help**

Geosynchronous satellites orbit the Earth at an altitude of about 3.58×10^7 m. Given that the Earth's radius is 6.38×10^6 m and its mass is 5.97×10^24 kg, what is the magnitude of the gravitational acceleration at the altitude of one of these satellites? ...

*June 9, 2012*

**Physics-PLEASE HELP ASAP**

I don't know how to substitute these equations from my question please help!

*June 7, 2012*

**Physics-PLEASE HELP ASAP**

A tungsten target is struck by electrons that have been accelerated from rest through a 38.9-kV potential difference. Find the shortest wavelength of the radiation emitted.

*June 7, 2012*

**Algebra**

Bob received 6 points for each question he answered correctly on Part 1 of a test and 4 points for each question he answered correctly on Part 2. If he answered 33 questions correctly and received a total of 168 points, how many questions did he answer correctly on Part 1?

*June 1, 2012*

**algebra**

factor using Ac Method 9x^2-6x-8

*May 28, 2012*

**geometry**

Thanks

*May 25, 2012*

**geometry**

Find the similarity ratio of a cube with a volume 512m^3 to a cube with volume 3,375m^3

*May 25, 2012*

**Geometry (Mathematics)**

The length of a rectangle is 15 m longer tan it's width. The perimeter of the rectangle is 74 cm. Find the length and width.

*May 22, 2012*

**math**

Find S(sub 73) for the arithmetic series 4 + 7 +10....

*May 22, 2012*

**Math**

A ferry boat holds 800 people. There are 260 people already on the boat. The owner of the boat wants to load several tour groups on. The tour groups come in sizes of 40 people or 50 people. The owner would like an equal number of each size of tour group on the boat. What is ...

*May 21, 2012*

**earth**

About how fast will it be traveling on average? Assume that its trajectory is close to a straight line. Give your answer in {\rm AU/yr} and in {\rm km/hr}.

*May 1, 2012*

**grammar**

can you check these for me ? circle the action word that tells more. 1. Lee grabbed a bucket of paint options: got or grabbed 2.The paint slipped . options: slipped or fell 3. It dripped on Lee's coat, options: went or dripped 4. It sprayed on Lee's pants. options: got...

*April 19, 2012*

**grammar punctuation**

#2 error in punctuation or capitaliztion. Perry asked if anyone knew the words to "Locked Out." Garrison yelled from the other room, "I loved that movie! "In fact," he continued, "I've seen it three times." (my choice) "Wasn't ...

*April 18, 2012*

**grammar punctuation**

Fine the error in punctuation or capitalization 1. "After you've rested," Frank said, "please help me move these boxes." "Can we wait until later?" asked Emily. "I have a lot of homework." "It won't take very long." ...

*April 18, 2012*

**BA345 Patents, Copyrights, Trademrks**

The day after the internet went on strike, the Justice Department indicted 7 individuals and two companies who were a part of Megaupload.c--. Research MegaUpload.c-- and the copyright infringement charges. Do you think MegaUpload is guilty of copyright infringement? Why or Why...

*April 17, 2012*

**gramer correct sentence**

"Did you know that Chicago sits on Lake Michugan?" asked Brenda.(think so) "Did you know that Chicago sits on Lake Michigan? Asked Brenda. (don't think so) "Did you know that Chicago sits on Lake Michigan? Asked Brenda". (don't think so) "...

*April 17, 2012*

**psychology**

humanistic therapy acknowledge unconscious forces and --- as a source of personal difficulties environment negative thoughts genetics psychosis please help

*April 16, 2012*

**psuchology**

Currently there are --- types of cognitive therapy in common practice. 2 4 6 cognitive therapy is rarely used today please help

*April 16, 2012*

**area hexagon**

Find the area of a regular hexagon with an apothem 10.4 yards long and a side 12 yards long. Please help

*April 16, 2012*

**sector and diameter**

Find the area of a sectorwith a central angle 0f 190degree and a diameter of 5.1cm. Can someone please help?

*April 16, 2012*

**raiots and perimeter**

ratio perimeter= 7/2 ratio of area= 49/4

*April 16, 2012*

**raiots and perimeter**

you have to figures that are similar, large one is 28yds, and the smaller one is 8yds. give the ratio of the perimeter and the ratio of the areas of the larger figure to the small one. Can someone please help not just answer but explain

*April 16, 2012*

**english story**

From Emperor to Citizen: The procession was temporarily abolished because of the emperor's interest in? wars viands bicycles poisons -- prepared food only for the sake of appearances. the imperial kitchens the high consorts his mother eunuchs any suggestions?

*April 13, 2012*

**english**

The shed held a (motley) supply of gardening tools. choose the letter of the word or phrase that best matches the () word outdated decomposing varied (my choice) small please help small

*April 13, 2012*

**grammar**

Oh thank you

*April 13, 2012*

**grammar**

( The Gift of the Magi ) is O.Henry's most famous short story. should the () be italized or in quotation marks I think quotation marks please help

*April 13, 2012*

**psychology**

Which of the following best demonstrates the goal of congnitive therapy? I think therefore I am (maybe) A fool sees not the same tree that a wise man sees A musician must make music an artist must paint a poet must write if he is to be at peace with himself ( maybe) The ...

*April 13, 2012*

**physical science**

Thanks

*April 12, 2012*

**physical science**

A disturbance sends ripples across water in a tub. These ripples are an example of a? rarefaction longitude wave compression surface wave (my choice) Sound is an example of what kind of wave? transverse wave longitude wave surface wave wavelength (my choice) Waves carry -- ...

*April 12, 2012*

**physics**

hey you guys , i reay appreciate it if you guys help me out . Q: a vector is a physica quantity that has which of the following properties ( can be more than one) a)magnitude b)color c)speed d)direction

*April 12, 2012*

**psychology**

In therapy, psychoanalysts try to trace unconscious factors that are the source of personal difficulty back to their historical source. Which of the following is an example of typical historical source that a psychoanalyst and his or her client might uncover during therapy? an...

*April 12, 2012*

**psychology**

Which of the following is a technique that a psychoanalyst is most likely employ in treatment? medication to stabilize dopamine imbalances dream analysis (my answer) twin studies cognitive restructing

*April 12, 2012*

**psychology**

The idea of "lying on the couch" has come to be--- in modern society? praised feared admired ridiculed (my choice)

*April 12, 2012*

**psychology**

Part of the therapists role in psychoanalysis is to? I believe listen

*April 12, 2012*

**psychology**

Modern psychoanalysis is defined as A treatment that focuses on observable behavior A treatmet method for mild to moderate disorders that uses a process of patient discovery Demonstrating how unconscious factors affect a persons current relationships and patterns of behavior( ...

*April 12, 2012*

**english (notificatins)**

Thank you for the help

*April 12, 2012*

**english (notificatins)**

Sorry!! persuasive appeals--devices in a speech that seek to convince an audience tone--the emotion that a speaker demonstrares towards his or her subject ethos--an appeal to the credibility of the speaker pathos--an appeal to a sense of right or wrong logos--an appeal to ...

*April 12, 2012*

**english (notificatins)**

persuasive appeals--(E) tone--(B) ethos--(C) pathos--(D) logos--(A) Please-check

*April 12, 2012*

**english (notificatins)**

an appeal to logic--(persuasive appeals) the emotions that a speaker demonstrates towards his or her subject--(pathos) an appeal to the credibilty of the speaker--(ethos) an appeal to a sense of right or wrong--(logos) devices in a speech that seek to convince an audience(...

*April 12, 2012*

**physics**

What are two general types of energy that can be used to classify many forms of energy? Can someone help

*April 11, 2012*

**physics**

Which has the greater IMA: a screw with closely spaced threads or a screw with threads spaced farther apart? Can someone answer this

*April 11, 2012*

**physics**

If a simple machine provides an increased output force, what happens to the output distance? Can someone please help

*April 11, 2012*

**physics**

How do you know that a sealed calorimeter is a closed system? because temperature is consurved because the masses of the sample and water are equal because thermal energy is not transferred to the environment because work is done on the test sample Please help me

*April 11, 2012*

**physics**

Which of the following statements is a consequence of equation E=mc^2? Energy is released when matter is destroyed Mass and energy are equivalent The law of conservation of energy must be modified to state that mass and energy are conserved in any process all of the above ...

*April 11, 2012*

**mental**

The work of---is the foundation of psychotherapy. Can someone please help?

*April 11, 2012*

**scientist**

What is biomass energy? the chemical energy stored in living things the electromagnetic energy stored in living things the nuclear energy stored in living things the thermal energy stored in living things Not sure what this one could be

*April 9, 2012*