dom
Most popular questions and responses by dom
Math (Physics)
Problem: An excited hydrogen atom could, in principle, have a radius of 2.50 mm . ________ Part A: What would be the value of n for a Bohr orbit of this size? Answer> n= 6.87×103 _______ Part B What would its energy be? Answer> E=_______eV [Note: I
asked on April 25, 2017 
Chemistry
OOPs i Meant How many grams CaCo3will dissolve on 3.0*10^2mL of 0.050 M Ca(NO3)2? Ksp=8.7*10^9
asked on March 21, 2011 
Physics
Two metal spheres having charges of +4.0 x 10^6 coulomb and +2.0 x 10^5 coulomb, respectively, are brought into contact and then separated. After separation, the charge on each sphere is...
asked on March 20, 2011 
Physics
An airfilled toroidal solenoid has a mean radius of 15.2 cm and a crosssectional area of 4.98 cm2 as shown in (Figure 1) . Picture this as the toroidal core around which the windings are wrapped to form the toroidal solenoid. The current flowing through
asked on March 4, 2017 
Pre calc
If 250 mg of a radioactive element decays to 200 mg in 48 hours, find the halflife of the element
asked on April 28, 2010 
math
Find 1/8 of 12. Express your answer in simplest form.
asked on October 7, 2015 
Math
Apex Plumbing charges a trip fee of $55 plus $15 for each quarter hour of service. John wrote an equation using, t , the total cost of a service call, as a function of, h , the number of hours the call lasted. What is the value of the slope in his equation
asked on May 1, 2012 
Urgent! PreCal
A wheelchair ramp with a length of 122 inches(top of ramp) and has a horizontal distance of 120 inches(bottom of ramp): a) what is the ramp's vertical distance(x)? b)Construction laws are very specific when it comes to ramps. Each vertical rise of 1 inch
asked on June 4, 2016 
Chemistry
How many grams will dissolve on 3.0*10^2mL of 0.050 M Ca(NO3)2? Ksp=8.7*10^9
asked on March 21, 2011 
Emily dickson
Three fact about her poet "The sky is low,the clouds are mean"
asked on April 12, 2017 
Physics
A 20cmdiameter circular loop of wire is placed in a 0.57T magnetic field. Part A When the plane of the loop is perpendicular to the field lines, what is the magnetic flux through the loop? Part B The plane of the loop is rotated until it makes a 42 ∘
asked on March 4, 2017 
10th grade
A sledge loaded with bricks has a total mass of 18.0 kg nd is plled at constant speed of a rope incllined at 20 degres above the horizontal. The sledge moves a distance of 20.0 m on a horizontal surface. the coefficient of kinetic friction between the
asked on November 27, 2010 
Math
If the electric field in an EM wave in free space has a peak magnitude of 8.7×10−5V/m, what is the peak magnitude of the magnetic field strength? Answer:____T
asked on April 14, 2017 
PreCal
Solve the equation for the indicated variable: (ax+b)/(cx+d)=6 , Solve for X
asked on May 25, 2016 
math
what is the word form for 0.34
asked on January 24, 2012 
Physics
A metal sphere has a net negative charge of 11 x 10^6 coulomb. Approximately how many more electrons than protons are on the sphere?
asked on March 20, 2011 
Math
Problem: What is the resistance of a 3.9m length of copper wire 1.1 mm in diameter? The resistivity of copper is 1.68×10^−8Ω⋅m. Answer> R=______Ω
asked on April 25, 2017 
Statistics
I you are told that a data set has a mean of 25 and a variance of 0 you can conclude that A)There is only one observation in the data set B) There are no observations in the data set C)All of the observation in the data set are 25 D)Someone has made a
asked on September 13, 2011 
Math (Physics)
A galaxy is moving away from Earth. The "blue" hydrogen line at 434 nm emitted from the galaxy is measured on Earth to be 458 nm . Part A How fast is the galaxy moving? Answer> v=____ c Part B How far is it from Earth based on Hubble's law? Answer>
asked on April 27, 2017 
Sociology
1). Welfare Reform is said by politicians to be based on the idea that the federal government wanted to get out of the “helping people” business. True or false 2). Generally speaking, the best predictor of where a person will go in life and what their
asked on May 2, 2017 
chemistry
The decomposition of an aldehyde solution in carbon tetrachloride is a first order reaction with a rate constant of 1.20 x 103 minl. If we start with [aldehyde] = 0.0500 molar, what will the concentration be 150 minutes later? a. 0.00900 M b. 0.0418 M c.
asked on February 17, 2012 
written communication
Discuss how you would approach creating a negative message for a superior This has been addressed on Yahoo: http://answers.yahoo.com/question/index?qid=20060830050606AACEvV3 When you come up with your attempt to answer this, please repost, and someone
asked on May 17, 2007 
Physics
The bird perched on the swing has a mass of 48.0 g, and the base of the swing has a mass of 159 g. The swing and bird are originally at rest, and then the bird takes off horizontally at 1.20 m/s. How high will the base of the swing rise above its original
asked on April 23, 2015 
Computer Programming
I'm trying to create a vba code that solves this problem: 50 apartment units rent for 600 a month, for each 40 dollar increase in rent a unit becomes unoccupied. I want to find the max profit and number of units at that number. Sub Rent() Dim Rent As
asked on July 9, 2013 
chemistry
How many moles of vanadium atoms, V, are needed to combine with 0.725 mol of O atoms to make vanadium pentoxide,V2O5?
asked on November 25, 2012 
Government
Which situation would not happen in a parliamentary form of government? A. The executive consults with the legislature about whether to declare war on a neighboring nation. B. The government dissolves when the ruling party cannot effect change on a major
asked on January 22, 2019 
Sociology
1). A major source of increasing economic inequality in the U.S. is the fact that: A) the U.S. is a racist society B) the overwhelming majority of new jobs have been in the lowest paying sectors C) Social Security payments are unable to keep up with
asked on May 2, 2017 
Vba
I'm trying to write a sub that asks how much oil I made, and then gives me number of barrels needed to hold oil, cost of producing oil, and profit from oil. This is what I have so far, I'm not sure what to do. Sub Oil() Dim barrels As Variant Dim tons As
asked on July 8, 2013 
Physics
Problem: A fixed 16.2cmdiameter wire coil is perpendicular to a magnetic field 0.79 T pointing up. In 0.15 s , the field is changed to 0.34 T pointing down. Part A: What is the average induced emf in the coil?
asked on March 4, 2017 
chemistry
For the reaction, A = B + C, the rate law is kA]. If it takes 80.0 seconds for 70.0% of a 10.0 gram sample of A to be transformed into products, what is the value of the rate constant? a. 0.00450 s1 b. 0.0290 s 1 c. 0.00530 s1 d. 0.0150 s1 e. 5.40 s1
asked on February 17, 2012 
Stoichiometry
[VolumeVolume].How many liters of HF gas will be produced when 30.0 liters of hydrogen reacts ? Equation:h2+f2>2HF i need help
asked on March 30, 2009 
Prealgebra
Sara is 24 years younger than Joe. Six years ago she was half as old as he was. How old is he now?
asked on May 20, 2013 
calculus
from the equation: x^4  i = 0 x^4 = i how do you get: The solutions are the fourth roots of i = cos(pi/2) + isin(pi/2) I don't understand how you get pi/2? please full and detailed explanation please.
asked on April 14, 2008 
trig
if 10 students enter projects in the art show, how many different ways can they come in 1st, 2nd, and 3rd place? would you go 10^3 OR 10TIMES 3? This is not a trig question. Neither of those answers is correct. After making one of ten possible choices for
asked on January 18, 2007 
PreCal (Help Plz)
The question I've been trying to figure out is asking me to explain how the graph of (g) is obtained from the graph of (f). The graphs are as followed:  f(x)= x^(2)4  g(x)= [x^(2)4] (Note: the Brackets represent absolute value symbols around the
asked on June 8, 2016 
Vba
A babysitter takes care of 20 kids. When taking care of all the kids she gets paid $50 per kid. However, for every $5 more she charges, a kid leaves. How many kids should she babysit to max her profit? I want to write a code that asks user to enter the
asked on July 8, 2013 
Calculus
A particle is moving with acceleration a(t) = 30 t + 12. its position at time t =0 is s(0) = 11 and its velocity at time t =0 is v(0) = 16. What is its position at time t = 8?
asked on April 26, 2012 
physical science
I must divide a blockletter shaped L diagram of a piece of land into four lots that are the same size and shape. The perimeter has one number next to each of the 6 sides. The numbers are (clockwise, beginning at the top) 1, 1, 1, 1, 2, 2. Can you help me
asked on September 3, 2009 
Math (Physics)
Problem: What wavelength photon would be required to ionize a hydrogen atom in the ground state and give the ejected electron a kinetic energy of 19.1 eV ? Answer> λ =______nm [Note: I got 3.8x10^8. I got it wrong twice] My steps: (32.7 eV)(1.6x10^19)=
asked on April 25, 2017 
mathe
The longer sides of an rectangle are 3 times as long as the shorter sides. If the perimeter is 100 ft, what are the dimensions of the rectangle
asked on December 8, 2016 
algebra
parts x4= strap
asked on October 2, 2014 
Excel Filtering
Hi I'm trying to filter data between 3 different columns. I want it so the data filtered so data in column a is smaller than column b, which is smaller than column c. I try to filter but it only allows me to use filter criteria from the individual column.
asked on July 11, 2013 
calculus
Find the number c if the line y=x is to be tangent to the graph of f(x)=x^4+c. what are the coordinates of the points of tangency?
asked on October 18, 2010 
Math
Hmm... i need someone to explain about Formualas however u spell it.
asked on December 14, 2009 
physical science
I was given a diagram in the shape of an "L"looks like a block letter Laround the perimeter are the numbers 2, 1, 1, 1, 1, and 2. It says divide this diagram of a piece of land into four lots that are the same size and shape. I have been trying since
asked on September 3, 2009 
Chemistry
To neutralize a solution of NaOH and use the least volume of acid, you should select I. 1.0M HCl II. 1.0 M HC(2)H(3)O(2) III. 1.0 M H(2)SO(4) (A) I only (B) II only (C) III only (D) I and II use equal and lesser volumes. (E) I, II, and III use the same
asked on April 29, 2008 
Maths
What is the probability that an year will have 53 Tuesdays
asked on February 8, 2018 
Algebara
How do you find the square root of 14 without a calculator? I know I need to use the square root of 9 which is 3 and the square roots of 16 which is 4. I know the answer is gonna be closer to 4 because 14 is closer to 16. I just can't figure how to get the
asked on August 16, 2016 
PreCal: Plz help!
Simplify and show work: [(X^(2)+3)^(1/3)](1)(x^(2))+[1/3(x^(2)+3)^(2/3)](2x)(x^(1)) My answer key says that it's this but I have no idea how to get to it. I've tried 4 times already: [(x^(2)+9)]/[(3x^(2))(x^(2)+3))^(2/3)]
asked on June 1, 2016 
PreCal
Simplify and show work: [(X^(2)+3)^(1/3)](1)(x^(2))+[1/3(x^(2)+3)^(2/3)](2x)(x^(1)) My answer key says that it's this but I have no idea how to get to it. I've tried 4 times already and failed each: [(x^(2)+9)]/[(3x^(2))(x^(2)+3))^(2/3)]
asked on June 1, 2016 
PreCal
Find all Real solutions of the Equation: (ENter as comma sparated answers, if there are no real solutions then just leave as NRS) x^(4/3)9x^(2/3)+14=0 x=?
asked on May 25, 2016 
Excel Filtering
Return 2005 Return 2006 Return 2007 I have a data table with returns for 3 different years. I want to use a filter that only includes records where the return is increasing each year(i.e.: 2005
asked on July 11, 2013 
Excel
Say this is my cell: 2013 *aaron e. pacheco*9743 2nd Avenue*Boca 33431 *pacheco@fau.edu*9049 how would i use the text function to extract the first, middle, and last names from a list of cells like the one above with differing name lengths? and possibly
asked on July 9, 2013 
Computer Programming
A babysitter takes care of 20 kids. When taking care of all the kids she gets paid $50 per kid. However, for every $5 more she charges, a kid leaves. How many kids should she babysit to max her profit? I want to write a code that asks user to enter the
asked on July 8, 2013 
math
what is algebraic fractions and how do you do them?
asked on February 12, 2013 
science
What the the primary consumers in the desert biome
asked on October 14, 2008 
which class is best to take of the three
A. Psychology B. Literature and Arts C. Journalism (Newspaper)
asked on April 15, 2008 
Trigonometry
simplify: 2sin35 deg times cos35 deg.
asked on January 18, 2007

quantitative chemistry
What about H2AsO4^
posted on April 24, 2018 
Earth Science (check answers)
I have 20 questions tho...
posted on February 15, 2018 
Geometry
Total number of outcomes when the two dice are rolled 32
posted on February 8, 2018 
Social Studies (Check, Please!)
Great nothing wrong
posted on December 30, 2017 
Social Studies
Yea he's correct _
posted on November 30, 2017 
math
54
posted on November 1, 2017 
Science
You can also use a filter for ocean water and proceed to than boil my friend.
posted on October 27, 2017 
Science
Well first it depend where you got it from. From ocean water its best to just boil it for about 68 hours. If it's lake water you need a need a filter. This gets the particles, dirt and some of the chemicals out of the water. It is wise to boil the water
posted on October 27, 2017 
Science!
I actually got A. But it's still 11.0 grams. Whatever your says for #9... it's 11.0 grams. :)
posted on October 27, 2017 
Math
What about the second half? But the first 4 are correct.
posted on October 27, 2017 
Sociology
For my answers I put, 1). D 2). False 3). True 4). B Could someone plz confirm these
posted on May 2, 2017 
Math (Physics)
Yes Sir
posted on April 25, 2017 
Math (Physics)
Part A answer is n= 6.87x10^3
posted on April 25, 2017 
Math
Payah aa nak jawab soalan ni
posted on September 4, 2016 
Algebara
Yes there are many sites but not one of them shows you how to do this, appreciate you trying to help
posted on August 16, 2016 
PreCal (Help Plz)
PLEASE
posted on June 8, 2016 
PreCal (Help Plz)
I looked at the graph and they both look similar. I'm not sure how to put it into the proper words. Is there anyway you could explain it to me? I'm having trouble.
posted on June 8, 2016 
PreCal
Thank you for the help Mr. Steve
posted on May 25, 2016 
PreCal
Thank you Mr. Steve
posted on May 25, 2016 
math
What's the area?
posted on May 4, 2016 
Math
the one with 5 cups of chocolate. thanks!!!!!!!!:)
posted on October 7, 2015 
Simplfing Fractions
Find of 12. Express your answer in simplest form.
posted on October 7, 2015 
Physics
ernfrehjfr
posted on April 6, 2015 
Vba
sorry, the input box above is supposed to ask how many gallons* of oil were produced
posted on July 8, 2013 
physics
First set up your cartesian coordinate system. You find that the "magnitude" of the velocity vector is the hypotenuse of your newly formed right triangle. Use trigonometric functions (sin,cos,tan) to find this xcomponent of the vector.
posted on November 12, 2012 
Physics
x=Acos(wt) x= position A=amplitude (in a circle radius is always amplitude) w= angular frequency t= time(s) step1: convert rad> degrees w=1.2 radians*57.29 (constant)= 68.75degrees step2: x=Acos(wt) x=.65m*cos(68.75degrees*time) just substitute time into
posted on May 11, 2012 
Physics  Submerged Cylinder
h=(2*sigma*cos(theta))/(rho*g*r) r= radius sigma= 0.123(10.00139T) theta=contact angle (for water=0) rho=density
posted on January 29, 2011 
physics calc based
Had problems with the same question.
posted on February 4, 2010