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April 20, 2014

Homework Help: Elementary School

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Physics-PLEASE HELP ASAP
For Bremsstrahlung radiation (or "braking X- radiation" ) the low-wavelength cutoff may be determined from Duane–Hunt law : λ =h•c/e•U, where h is Planck's constant, c is the speed of light, V is the voltage that the electrons are accelerated...
Thursday, June 7, 2012 at 10:41am

Physics please help!
For Bremsstrahlung radiation (or "braking X- radiation" ) the low-wavelength cutoff may be determined from Duane–Hunt law : λ =h•c/e•U, where h is Planck's constant, c is the speed of light, V is the voltage that the electrons are accelerated ...
Thursday, June 7, 2012 at 10:38am

Physics
This question was answered several days ago by Elena and by Bob: physics Posted by andrej on Saturday, June 2, 2012 at 8:10am. A tungsten target is struck by electrons that have been accelerated from rest through a 24.5-kV potential difference. Find the shortest wavelength of ...
Thursday, June 7, 2012 at 10:15am

Physics-PLEASE HELP ASAP
Elena and Bob replied to this question from another student: physics Posted by andrej on Saturday, June 2, 2012 at 8:10am. A tungsten target is struck by electrons that have been accelerated from rest through a 24.5-kV potential difference. Find the shortest wavelength of the ...
Thursday, June 7, 2012 at 10:14am

Elementary Statistics
1) Construct a confidence interval of the population proportion at the given level of confidence. x=60,n=300, 99% confidence. The 99% confidence interval is (_,_) 2) A researcher wishes to estimate the proportion of adults who have high-speed internet access. What size sample ...
Wednesday, June 6, 2012 at 10:22pm

Calculus
Yes, it is divergent. However, using the indefinite integral to establish this is not recommended. This is because in most cases, the indefinite integral cannot be expressed in terms of elementary functions. You need to consider first if the integral might be divergent at some...
Tuesday, June 5, 2012 at 11:49am

communication
Do you think the following is a weak or strong thesis statement: “The subject of this paper is my experience with teaching elementary school children”? If yes, why is it weak? How could you improve it? If no, what qualities do you think it has that make it adequate?
Saturday, June 2, 2012 at 8:17pm

physics
For Bremsstrahlung radiation (or "braking X- radiation" ) the low-wavelength cutoff may be determined from Duane–Hunt law : λ =h•c/e•U, where h is Planck's constant, c is the speed of light, V is the voltage that the electrons are accelerated ...
Saturday, June 2, 2012 at 9:52am

Calculus AB...I really need help
v = ∫πy^2 dx [0,π] = ∫πcos^2(cosx) dx [0,π] that is not something you can evaluate using elementary functions. wolframalpha can do it, but it's done numerically, fer shure!
Tuesday, May 29, 2012 at 4:01am

math
The word "elementary" has 4 vowels and 6 consonants so prob(consonant) = 6/10 = 3/5 (I counted y as a consonant, perhaps an English teacher could confirm if this is correct)
Saturday, May 26, 2012 at 3:03pm

math
the letters elementary are placed in a bag. one letter is randomly selected from the bag. what is the probability the letter selected is a consonant?
Saturday, May 26, 2012 at 2:49pm

I need correct answers for all please !
1. Regarding management and leadership, which statement is most accurate? A. Leaders can be good managers, and good managers can be leaders. B. Leaders aren’t managers, and managers aren’t leaders. C. Leadership and management are entirely unrelated. D. Most ...
Thursday, May 24, 2012 at 11:53pm

chemistry kinetics
1. Statement-I : Fractional order reactions are not elementary reactions. Statement-II : For an elementary reaction, order must be same as molecularity. are these statements true? give reason.
Thursday, May 24, 2012 at 1:06am

Calculus
good luck on this. You sure there's no typo? If you had ∫x^2 e^(x^3/2) dx that would be fine, since that would be very much like e^u du. But without that factor out front, this is not an elementary integral.
Wednesday, May 23, 2012 at 12:13pm

Management
1. Regarding management and leadership, which statement is most accurate? A. Leaders can be good managers, and good managers can be leaders. B. Leaders aren’t managers, and managers aren’t leaders. C. Leadership and management are entirely unrelated. D. Most ...
Thursday, May 17, 2012 at 12:28pm

English Honors
Hmmmm. Have you ever heard candidates for class president whisper about the other candidates? Have you ever listened to the plots of two girls each with their own eyes on a certain cute boy? If not, you haven't lived in the real world. I remember one fifth grade contest ...
Wednesday, May 9, 2012 at 1:03pm

Please Proofread Any Suggestions Will Help
Every morning, I drive to work; as I get closer I can hear the cadence calling of all the basic training units on Fort Benning, Georgia. Regardless of what is on the training schedule for the rest of the day, we conduct Army Physical Readiness Training (APRT). At a minimum the...
Sunday, April 22, 2012 at 1:44pm

calculus
The Institute finds that the average student taking Elementary Shorthand will progress at a rate given by dQ/dt=k(80-Q) in a 20 -wk course, where Q(t) measures the number of words of dictation a student can take per minute after t wk in the course. If the average student can ...
Saturday, April 21, 2012 at 1:27pm

Inttroduction To Business
1. Regarding management and leadership, which statement is most accurate? A. Leaders can be good managers, and good managers can be leaders. B. Leaders aren’t managers, and managers aren’t leaders. C. Leadership and management are entirely unrelated. D. Most ...
Thursday, April 19, 2012 at 4:03am

math
I learned it when I was in elementary school. http://www.google.com/#hl=en&sugexp=cqn%​2Ccconf%3D0.95%2Cmin_length%3D2&gs_nf=1&​pq=feet%20mile&cp=10&gs_id=36&xhr=t&q=+m​ile+feet&pf=p&sclient=psy-ab&oq=+mile+fe​et&aq=0&aqi=h1g4&aql=f&gs_l=&pbx=1&bav=o&#...
Monday, April 16, 2012 at 4:32pm

elementary algerba
(y+16) + (3y-5) y + 16 + 3y -5 4y + 11 answer: 4y + 11
Monday, April 16, 2012 at 3:16pm

English
1 and 2 are fine. 3. Describe the play equipment on an elementary school's playground: At recess, my friends at school love to play on the slide, the swings, the seesaw, and the monkey bars.
Sunday, April 15, 2012 at 6:03pm

science
How do quarks differ from other elementary particles?
Friday, April 6, 2012 at 3:47pm

social studies
If I could be provided with some good qualitie questions to interview an elementary teacher,along with some guidance on writing the essay.
Tuesday, March 27, 2012 at 11:01pm

economies
I teach English, social studies, and elementary math.
Tuesday, March 27, 2012 at 4:56pm

math for elementary teachers
the roof is a right rectangular prism and the floor is a rectangle. (its the outside of a warehouse). for the roof- the base has 51 x 51. The rectangular for the floor is 120 (l) x 20 (h) x 90 (w). need to find the volume and surface area. (counting the floor) Give an ...
Monday, March 19, 2012 at 2:32pm

math for elementary teachers
thank you. helped out alot!
Monday, March 19, 2012 at 2:15pm

math for elementary teachers
Compute the room area in square feet. Divide that by 9 for the area in square yards. Multiply the square yards by the cost per square yard. The seating capacity and table diameter have nothing to do with the calculation. They were presumably used to select or design the room
Monday, March 19, 2012 at 2:05pm

math for elementary teachers
110 ft = 36.67 yards 42 ft = 14 yards 14 * 36.67 = 513.38 sq. yards 513.38 * 12.36 = ?
Monday, March 19, 2012 at 2:05pm

math for elementary teachers
Suppose that carpeting cost $12.36 per square yard at a carpet store. what will be the cost to carpet a conference room if the rooms dimensions are 110 ft by 42 ft. (the conference room should seat 380 people using 6' diameter tables each seating 10 people.)
Monday, March 19, 2012 at 1:54pm

1st grade
Yes, they are normal questions. Elementary books about Lincoln and Betsy Ross are available for children in the primary grades.
Friday, March 9, 2012 at 2:06pm

Catering(Gourmet Essentials)
THURSDAY March 8, 2012 SCHOOL SUBJECTS - Art - Business - Computers - English - Foreign Languages - Health - Home Economics - Math - Music - Physical Education - Science - Social Studies GRADE LEVELS - Preschool - Kindergarten - Elementary School - 1st Grade - 2nd Grade - 3rd...
Thursday, March 8, 2012 at 6:03am

calculus
In that case, I fear there is no solution using elementary functions. who posed such a problem? It's solvable numerically, using a Taylor series, but not symbolically.
Wednesday, March 7, 2012 at 12:18pm

Chemistry
At a given temperature, the elementary reaction A <=> B in the forward direction is first order in A with a rate constant of 2.60 x 10^-2 s^-1. The reverse reaction is first order in B and the rate constant is 8.50 x 10^-2 s^-1. What is the value of the equilibrium ...
Monday, March 5, 2012 at 11:37pm

elementary statistics
56% of families had no children under the age of 18;17% had no child;18% had two children;6% had three children; and 3% had four or more children. If a family is selected at random, find the probabilty that the family has less than three children(express your answer in percent...
Saturday, March 3, 2012 at 8:32pm

Chemistry(Urgent, please check!!!)
The equation A + 2 B = C + D describes an elementary reaction, which takes place in a single step. Thus, the rate law must be? My answer is k(A)(B)^2 Is this correct?
Wednesday, February 29, 2012 at 8:20pm

elementary algerba
3y-5 + y+16 4y + 11
Wednesday, February 29, 2012 at 11:34am

elementary algerba
add 3y-5 to y+16
Wednesday, February 29, 2012 at 11:30am

Social Studies
what do you think you think of elementary school social studies texts that are being used in today's classrooms? Have they improved since you were a child? how have they changed? what sort of suuplemental materials make a difference?
Wednesday, February 29, 2012 at 1:49am

Elementary statistics
THANK YOU SO MUCH I have been stumped on this question for hours on two different occasions, I am so glad you cleared this up for me.
Wednesday, February 29, 2012 at 1:09am

Elementary statistics
The total number of outcomes is 9C3, because there are nine apples and you are choosing 3 where order doesn't matter. P(0) = 5C3 / 9C3 because there are 5 good apples and you need to choose 3. P(1) = 5C2*4C1 / 9C3 P(2) = 5C1*4C2 / 9C3 P(3) = 5C0*4C3 / 9C3
Wednesday, February 29, 2012 at 12:40am

Elementary statistics
Nine apples, four of which are rotten, are in a refrigerator. Three apples are randomly selected without replacement. Let the random variable x represent the number chosen that are rotten. Construct a table describing the probability distribution, then find the mean and ...
Wednesday, February 29, 2012 at 12:35am

Math for the middle school and elementary teacher
Excellent & well done!! :)
Tuesday, February 28, 2012 at 11:08pm

Math for the middle school and elementary teacher
The answer is 79, correct? Thank you for your guidance and help:)
Tuesday, February 28, 2012 at 10:19pm

math for the middle school and elementary teacher
You're welcome! :)
Tuesday, February 28, 2012 at 10:12pm

math for the middle school and elementary teacher
Thank you! :)
Tuesday, February 28, 2012 at 10:10pm

Math for the middle school and elementary teacher
Thank you very much for you help:)
Tuesday, February 28, 2012 at 10:09pm

Math for the middle school and elementary teacher
http://www.futureaccountant.com/probabil​ity/problems-solutions/drawing-picking-s​electing-two-three-more-balls-box-bag-ur​n-04.php and many variations of the same bag.
Tuesday, February 28, 2012 at 10:05pm

math for the middle school and elementary teacher
Yes, you're right, (a) is the correct answer because order matters.
Tuesday, February 28, 2012 at 10:04pm

Math for the middle school and elementary teacher
hint: For each class mean = total score / number of students => for each class total score=mean*number of students So the total score for each class is known. Can you find the total score for both classes? Total number of students?
Tuesday, February 28, 2012 at 10:03pm

Math for the middle school and elementary teacher
Correct! Well-done! P(RR)=(3/12)(2/11)=6/132 P(GG)=(4/12)(3/11)=12/132 P(YY)=(5/12)(4/11)=20/132 Probability to draw two of same colour =(6+12+20)/132=19/66 => Probability to draw two of different colours =(66-19)/66=47/66
Tuesday, February 28, 2012 at 9:59pm

math for the middle school and elementary teacher
No, so that a) is the correct answer because order matters in the line! I am correct, right? Thank you very much:)
Tuesday, February 28, 2012 at 9:58pm

math for the middle school and elementary teacher
Is the line ABCD the same line as BADC, assuming the head of the line is the person on the left (A and B respectively)?
Tuesday, February 28, 2012 at 9:56pm

Math for the middle school and elementary teacher
3 red balls, 4 green balls, and 5 yellow balls are in a bag. If 2 balls are drawn randomly (without replacement) find the probability that the balls are different colors. I got 47/66 that the balls are different colors...is that right?
Tuesday, February 28, 2012 at 9:51pm

math for the middle school and elementary teacher
They are not different but for a) the order doesn't matter for the way that the people can be lined up. But for b) order wouldn't matter either because there it doesn't matter who is on which team. Then c) there are no specifed posistions for the committee I'm ...
Tuesday, February 28, 2012 at 9:45pm

Math for the middle school and elementary teacher
I don't think you can find the total score because you would need the individual scores, right? I tried dividing 82/25 but that wouldn't work because we don't have all the scores...am I on the right track if not, can i please have some guidance? thank you!
Tuesday, February 28, 2012 at 9:42pm

math for the middle school and elementary teacher
If the fruit salad A is made up of Cherries, pineapple, peach and grapes, and salad B is made up of Pineapple, peach, grapes and cherries. Is salad A different from salad B? If they are different (order is important), then (d) is a permutation.
Tuesday, February 28, 2012 at 9:41pm

Math for the middle school and elementary teacher
To calculate the mean, you need the total score and the total number of students. Can you find a way to reconstitute these two numbers, knowing that mean = total score / number of students
Tuesday, February 28, 2012 at 9:38pm

math for the middle school and elementary teacher
I think that the answer is d) the number of different fruit salads made by choosing four out of seven fruits because you can't have all of the same fruit in a fruit salad.
Tuesday, February 28, 2012 at 9:38pm

math for the middle school and elementary teacher
A permutation requires a specific order, such as a line-up, or a hierachy, such as as committee of president, vice-president, secretary and treasurer. In other words, order is important for a permutation. A combination is typically "n choose r", such as how many ...
Tuesday, February 28, 2012 at 9:36pm

math for the middle school and elementary teacher
Which one of the following situations a permutation? a) the number of ways 10 people can be lined up in a line for basketball tickets. b) The number of possible four member bowling teams from a family of six siblings. c) The number of ways to choose a committee of three from ...
Tuesday, February 28, 2012 at 8:58pm

Math for the middle school and elementary teacher
A prof. teaches 2 calc. classes. The first class has 25 students and their mean on the 1st test was an 82. The 2nd class has 15 students and their mean on the same test was a 74. What is the mean on this test if the prof. combines the score for both classes? Is the answer the ...
Tuesday, February 28, 2012 at 8:55pm

PED 212
Using the databases listed within the Ashford Online Library you will evaluate a research-based article from a peer reviewed journal. Your critique must be grammatically correct, properly cited, and utilize APA style of writing. Choose one of the following topics that can be ...
Sunday, February 26, 2012 at 3:49pm

Chemistry(Please check answers)
1) The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the following mechanism proposed based on the experimental data. H2O2 + I - = H2O + IO - (slow) H2O2 + IO - = H2O + O2 + I - (fast) Which one of the ...
Sunday, February 26, 2012 at 12:56pm

elementary statistics
The number of calls received by a car towing service averages 21.6 per day (per 24-hour period). Find the probability that in a randomly selected hour the number of calls is fewer than 4. What requirement for the Poisson distribution is probably not valid in the scenario ...
Saturday, February 25, 2012 at 7:13pm

Chemistry(Please check)
1) The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the following mechanism proposed based on the experimental data. H2O2 + I - = H2O + IO - (slow) H2O2 + IO - = H2O + O2 + I - (fast) Which one of the ...
Saturday, February 25, 2012 at 6:34pm

Chemistry(Please check)
1) The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the following mechanism proposed based on the experimental data. H2O2 + I - = H2O + IO - (slow) H2O2 + IO - = H2O + O2 + I - (fast) Which one of the following...
Saturday, February 25, 2012 at 3:40pm

math elementary
double the biggest number then take away one eg 4+4=8-1=7 that is the example of 4+3=7
Saturday, February 25, 2012 at 1:28pm

chemistry
The equation A + 2 B = C + D describes an elementary reaction, which takes place in a single step. Thus, the rate law must be a. rate = k(A]2 b. rate = k(B]2 c. rate = k(A][B] d. rate = k(A][B]2 e. none of the above represents the rate law for this elementary reaction. help
Saturday, February 25, 2012 at 10:09am

chemistry
The equation A + 2 B = C + D describes an elementary reaction, which takes place in a single step. Thus, the rate law must be a. rate = k(A]2 b. rate = k(B]2 c. rate = k(A][B] d. rate = k(A][B]2 e. none of the above represents the rate law for this elementary reaction.
Friday, February 24, 2012 at 8:19pm

elementary stats
Find P(0), P(1), and P(2). Add together for your probability. You can use a binomial probability table to determine each of the probabilities.
Friday, February 24, 2012 at 7:15pm

elementary stats
1/4 * 11 = ?
Friday, February 24, 2012 at 11:25am

Chemistry
A + 2 B = C + D describes an elementary reaction, which takes place in a single step. Thus, the rate law must be a) rate = k (A)^2 b) rate = k (B)^2 c) rate = k (A) (B) d) rate = k (A) (B)^2 I think its D because there are 2 moles of B and 1 mole of A. Do you agree with my ...
Friday, February 24, 2012 at 2:34am

elementary stats
On a multiple choice test with 11 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the mean for the number of correct answers.
Thursday, February 23, 2012 at 11:18pm

elementary stats
the participants in a television quiz show are picked from a large pool of applicants with approximately equal number of men and women.Among the last 11 participant there have been only 2 women.If participants are picked randomly,what is the probability of getting 2 or fewer ...
Thursday, February 23, 2012 at 11:04pm

law
Identify and analyze the different crimes for which students are most at risk for in K-12, include some of the differences in victimization found across elementary, middle school, high schools, and college. why you think these crimes occur within the schools. Mention at least ...
Tuesday, February 21, 2012 at 7:07pm

law
Im not sure about elementary. child abuse maybe. In middle schools around here there are alot of drug sells and alcohol too. also a few bullying situations that lead to suicide, not sure how tht helps. High school: drug abuse, alcohol abuse, underage drinking, domestic ...
Monday, February 20, 2012 at 12:18am

law
Identify and analyze the different crimes for which students are most at risk for in K-12, include some of the differences in victimization found across elementary, middle school, high schools, and college. Provide reasons why you think these crimes occur within the schools. ...
Monday, February 20, 2012 at 12:12am

Physics
An electron and a proton are each placed at rest in an electric field of 363 N/C. What is the velocity of the electron 76.1 ns after being released? Consider the direction parallel to the field to be positive. The elementary charge is 1.60218 × 10 −19 C...
Friday, February 17, 2012 at 8:15pm

physics
What is the magnitude of an electrostatic force experienced by one elementary charge at a point in an electric field where the field intensity is 3.0 x 10^3 newtons per coulomb? a) 1.0 x 10^3 N b) 1.6 x 10^-19 N c) 3.0 x 10^3 N d) 4.8 x 10^-16 N
Wednesday, February 15, 2012 at 6:01pm

social studies
Interview a) Interview a teacher in the elementary grades regarding the teacher's social studies instruction. Include at least eight questions. b) Create your own questions such as: i) Do you use a textbook? ii) What do you think of the standards for social studies? iii) ...
Wednesday, February 15, 2012 at 5:03pm

math
Sunae's group of close friends are going to fifth grade in September. All are going to Belleview Elementary and their homerooms will be rooms 12, 14,or 16. All of her friends but 4 are going to room 12, all but 4 are going to room 14, and all but 4 are going to room 16. ...
Wednesday, February 15, 2012 at 2:13pm

office procedures
I disagree. I sent international mail when I was in elementary school -- almost 70 years ago.
Wednesday, February 15, 2012 at 2:06pm

elementary math
1000 40
Thursday, February 9, 2012 at 6:00pm

Business
Employed persons 2006-07 in Australia: -Proffestionals 19.3% -Intermediate clerical and service workers 16.5% -Associated professionals 12.9% -Tradespeople and related work 12.7% -Elementary clerical and service workers 9.3% -Labourers and related workers 8.6% -Managers and ...
Wednesday, February 8, 2012 at 2:22pm

math
each of the 15 student council members of Blakemore Elementary School is responsable for telling exactly 2 other students about the upcoming school pep assembly. Each of those 2 is then responsable for telling 2 other students. It takes 15 minutes for each round of stundents ...
Sunday, February 5, 2012 at 1:15am

homework
Phoebe Hearst From Wikipedia, the free encyclopedia Phoebe Hearst Phoebe (Apperson) Hearst Born Phoebe Elizabeth Apperson December 3, 1842 Franklin County, Missouri, USA Died April 13, 1919 (aged 76) Pleasanton, California, USA Spouse George Hearst (1862–1891...
Thursday, February 2, 2012 at 8:26pm

8th grade math
1. The area shown below will be used for the elementary school playground. What is this area? How much fencing is needed to enclose the playground? Use 3.14 for the value of pi. d= 4 yds for the half circle, w=10 yds. for width of rectangle, and length = 4 yds. and 3 yds for ...
Tuesday, January 31, 2012 at 8:14pm

geometry
you have been asked to help build a rectangular play area at the new tracy elementary school. you arrive at the site eager to begin. much to your suprise, the only things available to work with are two pieces of rope. Explain how you can use the rope to find the vertices of ...
Monday, January 16, 2012 at 10:32pm

geometry
you have been asked to help build a rectangular play area at the new tracy elementary school. you arrive at the site eager to begin. much to your suprise, the only things available to work with are two pieces of rope. Explain how you can use the rope to find the vertices of ...
Monday, January 16, 2012 at 12:38pm

Elementary math College
2/7
Tuesday, January 10, 2012 at 6:46pm

Math
The library at Miller Elementary School has an odd number of tables. Some tables will seat 4 students and some tables taht will seat 6 students. A total of 32 students can sit at the tables with no empty seats. What is the number of tables of each type?
Tuesday, January 10, 2012 at 2:22pm

Science Fair
It means that this contest will only accept 75 high school projects and 125 Elementary/Middle School projects. When they receive that number, the contest is closed. Even if they don't receive that number of entries, the registration closes at the end of January.
Thursday, December 29, 2011 at 5:27pm

Science Fair
S/I/T Exhibition 2012 The exhibition will be held on Sunday, March 25th, 2012 at Pfizer in Pearl River, New York. In case of cancellation due to inclement weather, the snow date is Sunday, April 1st, 2012. Registration opens Sunday, January 1, 2012 and closes on Monday, ...
Thursday, December 29, 2011 at 5:19pm

Algebra
sounds like you need some good solid in-person help. Or, to move matters along, tell us where you get stuck. You must have some idea how to get started on these problems. If not, and here it is the end of the semester, you really do need some personal help. Also, there is a ...
Saturday, December 17, 2011 at 11:36pm

math
The "rule" is "add one"...the pattern added ONE petal to each flower from group #1 to group #2. The NEXT set will be three flowers with SIX PETALS. Don't you just LOVE elementary math? I sure don't remember learning that kind of nonsense.
Tuesday, December 13, 2011 at 9:17pm

English(Review Paper)
Will you also proofread this? Cut By Patricia Mccormick Bryce Romig If I had the opportunity to ask Patricia Mccormick two questions about the main character, I would ask her why the main character Callie feels as though she has to self mutilate as a way to express her ...
Wednesday, December 7, 2011 at 7:37pm

Reading
Ask your public librarian or your teachers. My hunch is that these reading contests are only for elementary school students.
Monday, December 5, 2011 at 7:44pm

MATH
Hehehe!! My math skills stop at elementary math. I have no idea how to help you with this problem!
Sunday, December 4, 2011 at 10:41pm

myer park elementary
What is the analogy for honestly
Thursday, December 1, 2011 at 7:18am

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