Wednesday

April 23, 2014

April 23, 2014

Total # Posts: 84

**Difracction problem**

3.17*10^-10

**chemistry**

manfred, your answer is WRONG

**chemistry**

According to Miller Index we express the vector as a set of whole numbers, so I multiply through by 3. So, I've tried the crystallographic direction of the red vector as(10-3), but it's still wrong...

**chemistry**

I put the answer of ongrwa and it's WRONG

**chemistry**

People, I don't know if I'm in the right way... Could someone HELP too??

**chemistry**

w = what we want to know h = 6.63 x 10^-34 J s m = 9.1 x 10^-31 kg (mass of an electron?) v = I think that I calculete not im m/s

**chemistry**

now, we use the de Broglie equation to find the wavelength. Broglie equation: w = h / m v, where w = wavelength; h = Planck's constant in J/s; m = mass in kg; v = speed in m/s.

**chemistry**

the velocity of the electron is sqrt(2E/m) where E is the bond energy for NN and m is the mass of electron. So, v = sqrt (2 x 36.49 / 0.000548597 amu) v = 72.98/0.000548597 v= 133030.25

**chemistry**

as bonjo said, let's try to do together - rearrange the equation to make BE(N-N) the subject. BE(NCl) - 96.3[X(N)-X(Cl)]^2 = sqrt[BE(N-N) x BE (Cl-Cl)] BE(NCl) - 96.3[X(N)-X(Cl)]^2 = sqrt[BE(N-N) x BE (Cl-Cl)] (BE(NCl) - 96.3[X(N)-X(Cl)]^2) / sqrt [BE (Cl-Cl)] = sqrt[BE(N-...

**AP Calculus BC**

A curtate cycloid is defined by the equations x = 2t - sin t and y = t - cos t. If I walk along the cycloid, how far will I walk in 10 seconds?

**Reading( Immediate)**

apply synonym write a different sentence.use a synonym we had a nice time at the picnic.

**geometry**

using the diagram where there is <CBD< DAC<ABC<EBA<ACB and D and C equal 45 degrees and B equals 90 degrees what is the measurement for <DAC and < ABC and <EBA and <ACB

**Chemistry**

It's 6264

**science**

a) It's 6264

**Chemistry**

Dr B, is wrong

**Principles of accounting**

Sold goods on credit at list price less 10% trade discount to: D. Prince 25,000 S. Cato 14,000 What is the trade discount amount and how much does each person pays for the goods?

**early childhood**

a child bringing the mouth into contact with a nipple i think its rudimentary reflex. Am i right?

**Business Statistics**

In each case, sketch the two speciﬁed normal curves on the same set of axes: a A normal curve with m 20 and s 3, and a normal curve with m 20 and s 6. b A normal curve with m 20 and s 3, and a normal curve with m 30 and s 3. c A normal curve with m 100 and s 10, and a n...

**algebra**

find a if the line through (9,6a)and (15,a) has the slope -5/3..show work

**math**

the sum of two numbners is 143. on of the numbers is 3 more than six times the other number..find the two number and show work

**math**

the length of a rectangle is 2 inches less than 8 times the width. the perimeter is 194 inches..find dimensions

**Algebra 2**

A bug is placed on the road. t seconds after it is put down, the function is p(t) = -16tsquared + 64t, where p(t) is measure in feet. At what moment will the bug be 14 feet from where it began?

**Chemistry**

Household vinegar is acqueous 5.00%,acetic acid solution(by mass),if its density is 1,01 g/ml.calculate the mole fraction!molarity,and molality of the solution.

**life orientation**

Littering

**elementary algerba**

add 3y-5 to y+16

**statistics**

Construct a frequency distribution table to organize the following set of data: 44 36 38 40 41 36 39 43 43 35 44 35 43 37 44 37 38 38 40 36

**physics**

If 180 J of work is performed to move four coulombs of charge from the positive plate to the negative plate shown below, what potential difference exists between the plates?

**physics grade 11 one word term**

one word/term. 1.3.The minimum amount of energy required to start a reaction. 1.4.The distance between the centre of a lens and its focal point. 1.5. The type of image formed on a screen when light rays converge.

**physical science**

give one word/term for each of the following descriptions. 1.A substance that donates electrons in chemical reaction. 2.The formula showing the simplest whole number ratio in which the atoms combine to form a compound.

**Special Education**

What are the benefits of having an Intelligence Integration Training level 1 certificate?

**Special Education**

3.Given a favorite toy that Shimon manipulates or explores for 1 minute, 4/5 times. How could I change the above objective into a clear behavioral IEP goal?

**math**

Two angles are supplementary. One angle is 4 degree less than 3 times the other. Find the measures of the angles.

**Math**

How many problems out of80 does a student need to have correct to receive a score of 85%?

**12th grade**

what is genetic engineering?

**earth - website**

I would love my 4th grade students to explore a fun website about the earth and/ or other planets. Do you know any fun and interesting websites that my kids would enjoy exploring while learning about their planet earth.

**Math**

write an algebraic xepression for each word phrases? 1 more than the quotient of 21 and b

**math**

Welcome

**Math**

(s*3)+11

**Classroom Rubric**

I have met an individual who has designed at rubric with 10 criteria. Isn't that too much?

**Classroom Rubric**

How many criteria should be included in an classroom rubric? Why?

**Rephrasing a sentence**

How can I rephrase the following question: How do you measure students’ progress?

**shadow**

What is the best definition of "a shadow" that my 3 and 4 year olds could understand?

**soluble and insoluble... experiment question**

I want to introduce the concept of soluble and insoluble to my preschoolers ages 3 and 4 ... What experiment could I do with them so give them a better understand of items or materials that are soluble and insoluble?

**math**

3.6*10 to the 7power and 4.836*10 to the 8power in scientific notation?

**preschool**

Do you know any fun and exciting games or activities that I could do with my 3 and 4 year olds to introduce them to time/clock?

**Math**

Which list shows the values in order from least to greatest? A.[-5],8,[-3],4 B.-8,-[-4],4,[-8] C.[-5],[-3],[3],[5] D.-4,-[-8],-[4],8 The absolute value of a number is its distance from zero and is therefore always positive.

**Math**

Which of the following sets of numbers is ordered from least to greatest? A.1.5,1.2,1.1/2,0 B.0,0.5,1/8,1,1.5 C.1.5,1,0.8.1/2,0 D.0,0.5,7/9,1,1.2

**Math**

Estimate the sum of 3 1/5 + 2 1/2 A.6 B.5 C.7 D.4

**algebra**

Now which of these lines are functions?x=3 y=2 y=2x+5

**ABA**

The period of time that elapses between the presentation of a discriminative stimulus (the antecedent) and the display of the behavior is called the "latency period"? Is this question TRue or False... I chose False... am I correct

**Science Help**

Why is there a higher rate of obesity amongst Hispanics compared to that of African-American young children? I am trying to find articles on the above topic... I found a few but I really need some more articles... could u help me find some? Thx

**Math**

I Need Help On %.What Is 840% Written As A Mixed Number In Lowest Terms?

**Math word problem**

Thanks!

**Math word problem**

I take that back...994*4/7

**Math word problem**

I was thinking it would be 994/ 4/7...I don't know if I am over thinking...

**Math word problem**

On Anne's bicycle, the ratio of pedal turns to rear-wheel turns in second gear is 4 to 7. If her rear wheel turns 994 times per mile, how many times does she turn the pedal in one mile? Express your answer as an integer or mixed number.

**Preschool teacher needs your help.. thx alot**

The theme for this week is animal habitats... Do u have any lesson ideas, connected to this theme, that i could do with my 3 and 4 year olds?

**Preschool teacher needs your help... thx a mill**

I am a preschool teacher and my 3 and 4 year olds are struggling with their numbers and colors.... What fun game could I play with them to teach them their numbers and colors?

**Preschool teacher needs your help... thx soo much**

Pre-school teacher NEEDS YOUR HELP!!! thanks sooo much? I am a preschool teacher and the theme for this week is "Land/Air/and water".... My kids are 3 and 4.... what lesson ideas or craft ideas do u have in mind for this theme... I wanted to do a fun activity about t...

**Preschool teacher needs your help... thx alot?**

Oh thats a good Idea.. thx

**Preschool teacher needs your help... thx alot?**

thanks alot.... I was thinking about doing some kind of envelope activity that is connected to the mailman... since our theme for this week is community... do u have any other ideas that connects to a community theme

**Preschool teacher needs your help... thx alot?**

I am a preschool teacher and my kids are between the ages of 2-4... what art activity could I give them that connects to the letter E....

**Preschool teacher needs to thx**

I am a preschool (3 year olds) teacher and my students I focusing on the letter A. DO you have any art and craft ideas that I could do using the letter A?

**Assessment**

Thank you so much i was struggling between a criterion reference test or the NRT

**Assessment**

What's the name of the assessment or test in which each student is compared with others and ranked.

**Preschool teacher needs your help... thx**

I am a montessori preschool teacher. My class contains 20 students ages 3-4... I want to teach them the importance of taking a bath... What fun activity could I do with the students to encourage this behavior...?

**Preschool dilemma**

Hi, I am a new preschool teacher and would like some ideas on what different types of lesson plans or activities to do or teach on the first week of school... I also would like to know if you have any ideas or activities that I could do with my students that would help me beco...

**Teacher needs help!! Thanks**

I am pre-school teacher who wants to administer a social studies lesson plan to my students. I wanted the lesson to incorporate various aspects of my culture - Jamaican - combined with the United states culture... I want to develop students' appreciation for other countrie...

**What is the opposite of this phrase?**

What is the opposite of "Holy Writ?"

**Need help with this sentence... thanks**

Thank you.. i did try the thesaurus.... you suggestion sounds pretty good .. thx again

**Need help with this sentence... thanks**

Before her singing career took off,...... What word could I replace the phrase "took off" with? I was gonna say progressed but it does not seem to have the same effect...

**After-school activities for high school students**

Yes SraJMcGin... I will be meeting with the students tmr to discuss what they would like to do; however, I would love to go to the meeting with some ideas as to what I would like them to do...

**After-school activities for high school students**

I recently received a job to work in an after-school program designed for high school students. I have to organize and plan various activities for these students to do; however, this is my first time working with high school students and I am not sure as the types of activiti...

**Classroom Roles**

Why are older students more responsible and know their classroom roles than younger students

**math**

Thanks a lot I figured it out yesterday by byself.. Thanks a bunch anyways

**math**

How do i find the input and out put of these numbers input output 25 15 30 18 35 21 40 24

**math**

How do i find the input and out put of these numbers input output 25 15 30

**spelling**

can you say but, because together in the samesentence

**UNIVESITY OF PHOENIX**

do not understand fallacies

**MATH**

-1 3/4 = p - 1/2 HOW DO I FIGURE THIS OUT

**Math**

IS THE PROBLEM 25/4 = Y?

**math**

X/7 = -3 I GOT X=-21 AM I WRITE?

**ENGLISH**

I am trying to see if I should use raised or reared when speaking of a child. According to the usage note in Random House Dictionary and the American Heritage Dictionary, either raise or rear is correct in standard American English. http://dictionary.reference.com/browse/raise...

**science**

how can we reduce trash in our school What Can You Tell Me About Iron And Sulphur? My B F Is Stacey!! It would be more effective to present your question using the <Post a New Question> link. Since this is not my area of expertise, I searched Google under the key words &...

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