Questions Asked on
May 22, 2011

Physics
How long will it take a charged 80ìF capacitor to lose 20 percent of its initial energy when it is allowed to discharge through a 45 ohm resistor?
asked by Katie 
Chemistry 12
9. According to Arrhenius, which of the following groups contain: i)only acids ii)only bases a. NaOH, H2CO3, KCl b. MgCl2, H2SO4, HCl c. HNO3, HCl, H3PO4 d. Mg(OH)2, AgBr, HF e. KOH, NH4OH, Ba(OH)2 10. Enough water is added to 100 g of sodium hydroxide in
asked by Kavitha 
SCIENCE(chemistry)
draw a temperature time plot for icesteam transformation
asked by YASH 
math 9
when 5 radical 20 is written in simplest form, the result is k radical 5 what is the value of k? 1) 20 2) 10 3) 7 4) 4
asked by michaela .b. 
PAP Chemistry
Net Ionic Equation of : NaOH(aq) + CaBr2(aq)
asked by June 
Lit.
Metaphor or Simile? To laughter and contempt; that she may feel How sharper than a serpent's tooth it is To have a thankless child! Away, away!
asked by Itsmemario 
chemistry
A beaker contains 100 mL of water. We add 112 mg of KOH(s). What is the concentration of H+ ions?
asked by Sareena 
SCIENCE(PHYSICS)
A train travels 40 km/hr for 0.2 hr, 50km/hr for next 0.2hr and 60km/hr for next 0.4 hr.calculate the average speed of train
asked by YASH 
SCIENCE(PHYSICS)
A TRAIN IS MOVING ON A STRAIGHT TRCK AND TRAVELS AT A SPEED OF 72KM/HR AND PASSES A POLE BIN 3 SECONDS. FIND THE TJME TAKEN TO PASS A BRIDGE OF LENGTH 540m
asked by YASH 
chemistry/ quantitative analysis
How many grams of CaSo4 will dissolve in 6L of water?
asked by rvice 
HBC AND NWC
how did the old Hudson bay company keep control over the new hudson bay company after the merger with the northwest company? I read over the paragraph several times, and I still cant find the answer to this question. It says something...the Legislation
asked by Emma 
Algebra
x + 9y=33 5x + 4y =1
asked by Jeannie 
Trig
How do I find the quadrant in which angle thada may lie if cos thada > 0 and tan thada < 0?
asked by Nathan 
Chemistry 12
4. a. Using Le Chatelier's principle, what effect will an increase of temperature have on the following system? H2O(l) + 57 kJ ↔ H+(aq) + OH(aq) b. What is the expression for the constant for this reaction? c. What effect will an increase in temperature
asked by Sareena 
math
Write an equation of the line that is parallel to the line y= x+4 and passes through the point (0,10).
asked by Anonymous 
physics
What Net Force is necessary to give a 2.0 kg mass initially at rest an acceleration of 5.0 m/s^2?
asked by rianna 
English
When in disgrace with fortune and men's eyes I all alone beweep my outcast state, And trouble deaf heaven with my bootless cries, And look upon myself, and curse my fate, Wishing me like to one more rich in hope, [5] Featured like him, like him with
asked by Jess 
apchem
can someone explain the synthesis reaction from ethane to acetylene?
asked by anon 
math
Determine if the argument is valid or invalid. Give a reason to justify answer. If it is cold, then you need a coat. You do not need a coat. It is not cold. (Points : 2) Valid by the law of detachment Valid by the law of contraposition Invalid by fallacy
asked by kozy 
Chemistry (Electrons in Atoms)
True or False. 1)Electrons give off light as they drop to lower energy levels. 2)Electrons travel around the nucleus as waves. 3)A photon of low frequency light has more energy than a photon of high frequency light. 4)Orbitals with equal energy levels each
asked by Jennie 
ethics
Choose an ethical approach and explain the steps one should take when a supervisor asks one to perform a lawful, but immoral act
asked by norma 
math
illuminated by the rays of the setting Sun, Kelly rides along on a merrygoround casting a shadow on a wall. The merrygoround is turning 36 deg per sec. Kelly is 25 ft from its center, and the Sun's rays are perpendicular to the wall. At what rate is
asked by sophie 
algebra
state the degree of the given polynomial 3x^44x^2+7x1
asked by mema 
algebra
add the following (8x^22x+4)+(x^29x+7)
asked by mema 
algebra
list the coefficients of the given polynomial 2x^3+4x^2+8x5
asked by mema 
algebra
add the following (8.1x^25.9x7.1)+9.8x^28.1x4.8)
asked by mema 
Trig
A boat heads S 15 degrees E on a river that flows due west. the boat travels S 11 degrees W with a speed of 25 km per hour. Find the speed of the current and the speed of the still water. This is due tomorrow.
asked by GoMeGo 
pre cal
what are the amplitude and period of the sinusoid y=6cosx+7sinx?
asked by alex 
computer science
Your goal is to solve the following programming lab activity. Write a program that prompts & accepts a number between 1 and 12. After getting the input, display the number with the appropriate month. (example: This is the 1st month…January, This is the
asked by carol 
maths
find the total surface area where a cone has a height of 16cm and the diameter of the base is 24
asked by charles 
computer science
in visual logic You will need to design an application that it will prompt a user for their hourly pay rate, their hours worked, and whether they are single, married, divorced, or widowed. It will then calculate their gross and net pay. If they work more
asked by carol 
physics
A person standing on Earth at 44 degrees 9 minutes North, how fast is he rotating around the Earth in mph?
asked by glenn 
Algebra
I could use some help on this please. Write a linear function that satisfies the given conditions: h(1) = 4, h(0) = 5 Thanks!!!
asked by Kate 
Math
2/9 x 2 1/4
asked by Caleb 
physics
explain body is thrown vertically downward?
asked by lala 
Alkaline Dry Cell
I need to be able to label all parts of battery
asked by Pat 
physics
A pen placed 13.0 cm from a concave spherical mirror produces a real image 13.5 cm from the mirror. a) What is the focal length of the mirror? Answer in units of cm. b) Calculate the magnification of the image. Assume the pen is placed 28.9 cm from the
asked by Laura 
math
What are five points in which the xcoordinate and the ycoordinate are opposites?
asked by megan 
apbio
what method of dna sequencing would be used to sequence a recombinant plasmid?
asked by april 
chem
an ol suffix indicates that an OH group has been added to a hydrocarbon. Which formula represents 1,2ethanediol? 1 C2H4(OH)2 2 C3H5(OH)3 3 Ca(OH)2 4 Co(OH)3
asked by lisa 
SCIENCE(biology)
define sustainable agriculture
asked by YASH 
msth
you are planning for your kids future education. he is 8 years old now and will start in ten years. How much will you have to set aside each year in order to have 65,000.00 if the interest rate is 7%.
asked by mark 
Science
What does Hubble's law tell us?
asked by Chris 
travel agency
hi, can anybody help me for my project...strength and weaknesses of a travel agency ....like any travel agency you know please help tnx
asked by resisster 
Language Art
Do you believe that sacrifice is the noblest of acts?
asked by CuteBarbie 
Little River
Jack and Jill invented a Trivia game in which a player can score 0,6 or 11 points on each turn.each player must take at least one turn.write an equation for a total score of 45 points in the game.
asked by Jeff 
Chemistry
Besides reducing pollution, why would a hydrogen fuel based care be a better alternative to the fossil fuels benig used in cars today?
asked by Lisa 
chemistry
what is the molarity of a solution containing 15.0 g of NaCl in 1.25 L of solution?
asked by lucky 
pharmacology
The doctor orders 5 mg/kg medication to be given to a patient who weighs 121 lbs. On hand, we have 0.1 g/ml. How many mg will the patient receive in her dose? How many ml will the patient receive to get the ordered dose?
asked by ana 
physics
If a ball is thrown upwards at 20 ft/sec, the height h after t seconds is given by h = 16t^2 + 20t. How many seconds does it take for the ball to reach its maximum height, and what is this height?
asked by lee 
chem.
If 130.0 g Zn reacts, what mass of ZnCL2 are produced?
asked by mike 
chem.
What is an ionic substance made from?
asked by mike 
math
divide in the indicated base 5 6 / 252 6
asked by Anonymous 
fractions
a boy eats 1/3 and 1/2 of a pizza for himself. what fraction of the original pizza does he have left
asked by steph 
physics
four equal charges of 10microculomb is placed in4 corners of a square of side 0.2m. Calculate the force at any one of the charges..........
asked by jeena 
mass percent
Suppose 22.93mL of KMnO4 solution used in the question above (KMnO4 solution in above question had concentration of 0.02036M)are needed to oxidize Fe(2+) to Fe(3+) in a 0.4927g pill. What is the mass percent of FeSO4*7H2O (molar mass 278.03g/mol) in the
asked by Meso 
Algebra
Ok one last complex fraction on the worksheet, can i get some help with it? [(x/3)4]  [5+(1/x)]
asked by Denice 
algebra
please shoe me how to factor this problem b^34b^29b+36
asked by roshunda 
math
Multiply in the indicated base 144 and 5 x 43 and 5
asked by Anonymous 
MATHEMATICS
evaluate : lim (existing from n to infinity)1/n^2 [1/1+cos(pie/2n) +2/1+cos(2pie/2n) + 3/1+cos(3pie/2n)+......to n terms]
asked by PRERANA 
Math
I can't figure out this math problem: 76 is what percent of 15!!!! Need help! URGENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
asked by Mbaintu 
calculus III
What heading (or direction) and airspeed (speed in still air) are required for an airplane to fly 837 mph due north if a wind of 63 mph is blowing in the direction of S 11.5 degrees E?
asked by Miles 
6th Grade Math
76 is what percent of 15??????????????????
asked by Mbaintu 
Advance Algebra (Graphing)
I need help finding the asymptotes, and domain of these two graphs.. 1) 1/x^2 Vertical Asym.:? Domain:? Horizontal asym.: y=0 2) x^2/1 Vertical Asym.:? Domain:? Horizontal asym.: none THANKS!
asked by Brittney 
government
How did world war 1 help to bring abiut the russian revolution?
asked by sarah 
chemistry/ quantitative analysis
How many grams of CaSo4 will dissolve in 6L of water?
asked by rvice 
Life oriantation
What are the ways in which the human problem impacts on the community
asked by Laurian 
chemistry
Rachel adds together 450.9g of a 22.0% solution of potassium carbonate and 275 grams of a 5.57m solution of Barium chlorate. How many grams of precipitate does she produce?
asked by guadalope 
unity school
Ji cos38' sec(902x)ji equal to 1 ,then angle 'x' is
asked by umesh 
precalc
what are the asymtopes of 2x/x3
asked by caitlyn 
Physics
How Fast would a satellite have to move to stay in an orbit 300 miles above the Earths surface?
asked by Elizabeth 
precalculus
what is the F^1 of 6/x+4
asked by kelly 
physics
How high would you have to go in the atmosphere for half of the mass?
asked by safa 
jphysics
the chapter is on electric fields and forces and I cannot figure these 3 answers out: Matt forgot to put the fabric softener in the wash. As his socks tumbled in the dryer, they became charged. If a small piece of lint with a charge of +1.25 E 19 C is
asked by Kelli Kenyon 
trig
In Rights Triangle ABC with C=90 degrees if a=4 and c=2square roots of 7, find SinA
asked by Tori 
trig
In Rights Triangle ABC with C=90 degrees if a=4 and c=2square roots of 7, find SinA
asked by Tori 
math
what is inverse of this funtion f(x)=(1 / 3)^x? I think the answer is f1(x)= log base 1/3 of x, but i know im wrong... please help!!! THANK YOU
asked by Priya 
Chemistry 12
Hey guys i only have this question left on my review and i just can't fingure it out! Sketch a pH curve for the titration of 40.00mL of 0.100 M hydrazine, H2NNH2, having a K of 3.0x10^6 by 0.100 M HCIO4 a) what combination of acidebase titration is this?
asked by Emma 
math
find the volume of the cup. the diameter of the top is 3inches. the diameter of the base is 2inches. the height is 4inches.
asked by meeeeee 
Calculus
Explain how you would use the power integration formula to integrate the function f(x) = (1/x^2)(1/x)+(1/4).
asked by Mai 
Chemistry
Just keep getting different answers when i review this, i can't seem to get the correct one. Calculate [H3O] and [OH] for a sodium hydroide solution having a pH of 12.5
asked by Laura 
economics
1.What two policies could you use to reduce the total amount of emissions? 2.Why do you think they each would work?
asked by Anonymous 
life orientantion
human factor that cause ill health?
asked by Anonymous 
Chemistry
i have another one i can't get the write answer for... Calculate the pH of the colution that results when 27.38 mL of 0.15 M H2SO4 is mixed with 18.50 mL of 0.19 M Ca(OH)2? Thank you guys so much!!
asked by Laura 
fundaents
the most fundamental principle behind learning is that children do what A. construct knowledge B. learn through play Clean wen thei physical needs are satisfied D. learn through socialineaction i think it's B or D
asked by Heather 
Kids and Sports
Introducing organized sports among young children is not recommended because? A.this excludes the teacher or caregiver from a role in play. B.they lack the necessary physical maturation needed. C.they should be making up their own rules. D.they lack the
asked by Heather 
geometry
If given 2 spheres, if the volume of the first sphere is 3/4 and the volume of the second sphere is 36, which is the relation of the second radius to the first?
asked by alex 
Chemistry
30 grams of sodium chloride is reacted with enough silver nitrate to use all of the sodium chloride in a double replacement reaction. how many grams of silver chloride would be formed?
asked by Carlos 
4th grade math
how do you write 50.09 in word form?
asked by bes 
Chemistry
30 grams of sodium chloride is reacted with enough silver nitrate to use all of the sodium chloride in a double replacement reaction. how many grams of silver chloride would be formed?
asked by Carlos 
math
Essay question: show all work. Suzie’s flower shop estimates that supplies costs for one month will be given by the polynomial 5x2 + x – 4. She estimates that utilities costs for one month is given by 8x – 7. Find and simplify an expression that
asked by Anonymous 
4th grade math
Ms. Sue, so how would you write 50.90
asked by bes 
Math  Calculus
A 13 foot ladder is sliding down a vertical wall at 1 ft/sec. How fast is the base of this ladder moving on a horizontal ground after 5 seconds?
asked by Wes 
english
Compare the event to one or more similar events. When comparing, use at least three comparatives and three superlatives. To the movie toy story 3
asked by Confuse person 
4th grade math
Still confused. let's try this: word forms for: 9.035 9.35 Thank you.
asked by bes 
english composition
how many players are on the team?
asked by frankie 
computer sciece
I have a question, how do we find a Voltage, Current, Power if we use PSpice? I use the software to find all the Values but I don't know how to explain.
asked by Alex 
Quick Spellig Question
Who do you spell meadoly? For ex: She can sing in a perfect meadly. :')
asked by Willy Wonka 
chemistry
Draw the condensed structural formulas of ethyl alcohol
asked by Ivy 
CONFLICT
Was conflict over the red river settlement inevitable? Wat? Yes it was inevitable, because anyone could have taken control of the land, and the Metis would have to fight to get it back:\
asked by Emma 
Math
2x^2 + 7x 15 =0
asked by Ina 
Lit.
Okay this poem is making my head hurt! I have to find out its meter and rhyme scheme? I say its a iambic pentameter and made up of slant rhymes? Oh and the metrical variation in the first line is a trouche righttt?? Wild Nights  Wild Nights! Were I with
asked by Itsmemario 
Spanish
Last paragraph. I wasn't going to post it, but considering how atrocious my last two were... A fictional invitation with details about a party. Include: date, time, location/ apparel/ purpose of party/ gift ideas. Estamos teniendo una fiesta de cumpleaños
asked by Mina 
math
multiply 2x57 using napier method
asked by Anonymous 
bobpursely
Was conflict over the red river settlement inevitable? Wat? Yes it was inevitable, because anyone could have taken control of the land, and the Metis would have to fight to get it back:\
asked by Emma 
English
I need to write five sentences on the role of education in successful financial planning, in which you correctly use a different verb tense in each sentence. I also have to mark each verb used in bold and, in parentheses, identify the specific tense used.
asked by Darlene 
calculus
Sorry to post this again, but I am still unable to understand it and need help. Please help.1) Using 3(x3)(x^26x+23)^2 as the answer to differentiating f(x)=(x^26x+23)^3/2, which I have been able to do, I need to find the general solution of the
asked by Claire 
computers
The process of using or controlling two or more windows at a time is known as A. stacking. B. threading. C. hyperthreading. D. multitasking. i chose d
asked by kayla 
chem
36.00mL of KMnO4 is required to oxidize 25.00mL of 0.02932M Na2C2O4 solution. what is the concentration ofKMnO4? Do I just use C1V1=C2V2? Thank You
asked by Meso 
math
how do i convert a number that is grater than 360 to a deggese?
asked by diana 
Chem
Suppose 22.93mL of KMnO4 solution used in the question above (KMnO4 solution in above question 36.00mL and concentration of 0.02036M)are needed to oxidize Fe(2+) to Fe(3+) in a 0.4927g pill. What is the mass percent of FeSO4 (dot) 7H2O (molar mass
asked by Meso 
algebra
add tyhe following (8x^22x+4)+(x^29x+7)
asked by mema 
algebra
Find the difference (x^2+8x7)(9x^25x7)
asked by mema 
algebra
Find the product 7x(2x^2+x4)
asked by mema 
chemistry
A unknown piece of metal is placed into a container of acid. Hydrogen gas was produced as a result. The unknown metal could have been ? Ti is the answer, but I don't understand why.
asked by jazmin 
algebra
A pack of Jillybeans contains seven different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig and Grape. You can make each flavor indivdually or come up with some crazy combinations. How many flavor combinations are possible with these seven flavors
asked by Matt 
Life orientation
Name two institutions/community organistations that are involved in supporting or giving redress to water pollution disasters.explain how these organisations are involved in providing a safe and healthy environment.
asked by Joseph 
Chemistry
XeF2 is a linear molecule with vibrational frequencies of 515 cm–1 (symmetric stretch), 555 cm–1 (antisymmetric stretch) and 213 cm–1 (bend). A vibrational Raman spectrum is acquired using radiation at 488 nm from an argonion laser. Predict, with
asked by Alice 
Chemistry
iron metal & oxygen combine to form magnetic oxide of iron, Fe3O4. How many mols of iron can be converted to magnetic by 8.80 mols of pure oxygen?
asked by Cassie 
Trig
cos4x*cos3x + sin4x*sin3x
asked by Daniel 
math
Is it possible for the lengths of a right triangle to form a geometric sequence? If yes, determine the lengths and the measures of the acute angles. if it's not possible, explain why not.
asked by sophie 
chem
if the mass of a copper wire before an experiment wieghed 2.82 grams then after it wieghed 2.57 grams. what is the mass of copper that reacted
asked by Cassie 
Geometry
I am studying for exams and need help with one of my review problems. A paraellogram has sides of lenghts 12 cm and 20 cm. If the area of the paraellogram is 600 sq cm then find the length of the shorter height of the parallelogram.
asked by Mary 
Criminal justice
why does the system require that everyone is entitled to a fair trail, even if the person is caught redhanded
asked by Julie 
Geometry
How do I find the area of a trapazoid with side lenghts 6 & 7, bottom 17 and top 10. I know the perimeter is 40. Now I need the area.
asked by Mary 
Algebra
How do i simplify this? [(3x+1)/(x2)] + [(2x1)/(x2)]
asked by Erin 
Life orientation
A clear explanation of consequences of this human factor
asked by Comfort 
marketing
Select three major sales promotions from different companies.
asked by rex 
Advanced algebra
How do i simplify this complex fraction? (x+3)/(3x^2)/(6x^2)/[(x+3)^2]
asked by Denice 
chemical formula
Do i need a chemical formula to calculate the mols of FeSO4*7H20 when given the mols of Fe(II)? If so i only know that Fe(III) + H2SO4 + H3PO4 are the reactants, and FeSO4*H2O is the product. Help?
asked by Meso 
science
calculate the mass of ammonium sulphate, which contains the same number of moles as 4g of iron(ll) sulphate heptahydrate.
asked by ogah john 
electrons in atoms
What is the wavelength of the emitted photon, when the electron in the hydrogen atom makes a transition from the ni = 5 state to the nf = 3 state?
asked by Beth 
PreCalc
Can you someone please help me with this question??? Simplify cot(x + pi)
asked by Emily 
statistics
two dices are tossed once. let the random variable be t he sum of the up faces on the dice. A). find and graph the probability distribution of the random variable. and b) calculate the mean (or expectation) of this distribution
asked by sharik 
chemistry
i reallly need help with combining the gas laws. here are a few questions i am struggling with if anyone could please help! 1. A steel container holds 750.L of O2 gas at STP. a) how many moles of O2 does the container hold? b)how many grams of O2 does the
asked by me 
Geography Europe
Agree or Disagree with the following statement: Western Europe is a peninsula of peninsulas. Explain your position.
asked by Justin Bieber 
7th grade math
The second difference of a sequence is a constant 5. The differences between the first term and the second term, 12, is 8. How do I find the first five terms?
asked by samantha 
trig
How do I name the quadrand in which angle thada may lie if sec thada > 0 and tan thada > 0?
asked by Nathan 
books
I need some information on DeeDee from "Early Candlelight" by Maud Hart Lovelace. It was a hard read for me. Also, a summary of some of the main events would be great! Thanks.
asked by Kelsi 
AP Physics
A Young's double slit has a slit separation of 2.50x10 raised to the 5th power m on which a monochromatic light beam is directed. The resultant bright fringes on a screen 1.00 m from the double slit are separated by 2.30x10 raised to the 2nd power m.
asked by Sydney 
English
I urgently need you to check these sentences for me, please. 1) Elizabeth I was unmarried and used this (?) as a political weapon because for the European princes was important to keep on good terms with England. (better "because she encouraged the hopes
asked by Henry1 
English
I forgot to include the following two sentences and as well as few sentences in indirect speech. Thank you. 1)He invited me to go (not come) to the disco with him that evening. 2) This prescription must be shown (not "showed") to the doctor. 3) "Fire now",
asked by Henry1 
math
What is the distance between the parallel planes: ax+by+cz=d1 and ax+by+cz=d2?
asked by sophie 
Math
Write an equation of the line that is perpendicular to the line y=2x1 and passes throgh the point (0,3)
asked by Erin 
9th grade integrated algebra
a tree casts a 25 foot shadow on a sunny day if the angle of elevation from the tip of the shadow to the top of the tree 32 degrees, what is the height of the tree to the nearest thenth of a foot?
asked by michaela 
math
Write a linear function that satisfies the given conditions: f(0)=12, F(3)= 2
asked by Erin 
math9
which relation is NOT a function? 1) {(1,5),(2,6),(3,6),(4,7)} 2) {(4,7),(2,1),(3,6),(3,4)} 3) {(1,6),(1,3),(2,5),(1,7)} 4) {(1,2),(0,5),(5,0),(2,1)}
asked by michaela .b. 
geometry
How do you find the slopeintercept equation of medians of a triangle and perpendicular bisectors of a triangle?
asked by Jasmine 
math9
what is the value of the ycoordinate of the solution to the system of equations: x2y=1 and x+4y=7 1) 1 2) 1 3) 3 4) 4
asked by michaela .b. 
Spanish
Podemos alquilar dos peliculas I need to answer this using direct object pronouns.
asked by Jane 
integrated algebra 9
given : A={all even integers from 2 to 20,incusive} B={10,12,14,16,18}'what is the compliment of set B within the universe of set A? 1){4,6,8} 2){2,4,6,8} 3){4,6,8,20} 4){2,4,6,8,20}
asked by michaela .b. 
integrated algebra 9
given : A={all even integers from 2 to 20,incusive} B={10,12,14,16,18}'what is the compliment of set B within the universe of set A? 1){4,6,8} 2){2,4,6,8} 3){4,6,8,20} 4){2,4,6,8,20}
asked by michaela .b. 
Accounting
MHS currently has $1,150,000 in cash. How long would it take them to accumulate $2,000,000 in cash? Assume an interest rate of 5%.
asked by Barbara 
Physics
With an average acceleration of −2.2 m/s^2, how long will it take a cyclist to bring a bicycle with an initial speed of 14.5 m/s to a complete stop? Answer in units of s.
asked by Laura 
geometry
If the edges of the base of a rectangular prism are 8cm and 6cm, and the diagonal is 10square root of 2, what is the volume of the solid?
asked by L.D. 
math
what will a deposit of 4500 be worth if left in the bank for 5 years at 8% compounded quarterly?
asked by mark