Questions Asked on
April 4, 2015

chemistry
A 100 w lightbulb is place in a cylinder equipped with a moveable piston. The ligshtbulb is turned on for 0.015 hours, and the assembly expands from initial volume of 0.85 L to a final volume of 5.88 L against an external pressure of 1.0 atm. Use the
asked by Ebimobowei 
Chemistry
am I doing this equation correctly, please help. K3PO4(aq) + Ba(NO3)2(aq) my answer: 3K(NO3)2(aq) + 2Ba(PO4)3(s) Double displacement precipitation
asked by Michelle 
Chemistry
The bubble in the tip of the buret is not removed prior to performing the NaOH standardization. Will the reported concentration of the NaOH be greater than, less than, or equal to the true concentration of the NaOH if the bubble is flushed from the buret
asked by Michelle 
child development
Research on the importance of early experiences for children’s intellectual development played a major role in the founding of A. the Convention on the Rights of the Child. B. the Children’s Defense Fund. C. Project Head Start. D. the
asked by younes 
math
Mani, James, and isidro equally shared 1/2 of a pie. Which fraction of the whole pie did each of them receive ?
asked by autumn 
Finance
P4.3 Assuming you purchased a share of stock for $50 one year ago, sold it today for $60, and during the year received 3 dividend payments totaling $2.70, calculate the following. a. Income b. Capital gain (or loss) c. Total return (1) In dollars (2) As a
asked by Steven Henager 
chemistry
The volume of CO2 produced by the combustion of 20g of graphite containing 10% impurity will be?
asked by Ris 
Physics
A constant retarding torque of 12 N*m stops a rolling 0.80 m diameter wheel in a distance of 15 m. How much work does the torque do?
asked by Alan 
Physical Science
A model electric train requires 12 V to operate. When connected to a household voltage of 120 V, a transformer is needed. If the primary coil has 500 turns, how many turns must the secondary coil have?
asked by Melvin 
where would the commas be
kamil is the only person who listens intently to professor tams long boring history lectures
asked by Anonymous 
math
Stewart is playing a video game. He earns the same number of points for each prize he captures. He earned 1,200 points for 6 prizes, 2,000 points for 10 prizes, and 2,600 points for 13 prizes. Which is the dependent variable in this situation? A)the number
asked by kyle 
Elementary Algebra
Walk 1or2 miles. Check the time before starting your walk and at the end of your walk. Determine your waling rate in minutes per mile. Create an equation that describes the rate. walk 1 mile time 6:00 to 7:30 so this would be 90minutes and that is where I
asked by Lavery 
physics
The man fires an 75g arrow so that it is moving at 80 m/s when it hits and embeds in a 13kg block resting on ice. What is the velocity of the block and arrow just after the collision? How far will the block slide on the ice before stopping? A 7.2N friction
asked by Katie 
Chem 12
0.300 mol of S2 and 0.310 mol of C are placed in a 1.00 L flask and allowed to reach equilibrium according to this reaction: S2(g) + C(s) ⇔ CS2(g) At equilibrium, 0.271 mol of CS2 is present. The value of Keq for the reaction is  a)9.3 b)0.91 c)240
asked by Steph 
math
Five people share these four candy bars . what fraction does each share?
asked by autumn 
Life orientation
Factors that could threaten or limit core functions of the media
asked by Lola 
maths
a wheel with diameter 40 cm makes 50 revolutions per minute. how long it take to cover a distance of 6.28 km?
asked by muskan 
Math Question
Tom Newman took out a simple interest loan of $1,500.00 at 10 percent interest for 12 months. after 4 payments the balance is 1,100. he pays off the loan when the next payment is due what is the interest? Is it $9.17 Thanks!!
asked by Nadia 
Physics
Suppose we had a straight tunnel, through Earth's center, to a point on the opposite side of the planet, and used it to deliver mail to the other side. With what speed would our packages pass through Earth's center. So: ag = (GM)/R2 Mins = (4/3)πR3*ρ So,
asked by Nora 
Civics
15. The _______ was developed during the presidency of Lyndon Johnson. A. Rural Electrification Administration B. Peace Corps C. Works Progress Administration D. Upward Bound Project D?
asked by Sarah 
Science
How much work do you do when you push a shopping cart with a force of 50N for a distance of 5M
asked by Leana 
math
A recipe for 1batch of muffins included 2/3 cup of raisins.Ina made 2 and 1/2 batches of muffins.how many cups of raisins did she use
asked by autumn 
Chemistry
Consider the following equilibrium: At equilibrium, 4.0 × 102mol H2, 4.0 × 102mol CO, 1.0 × 102mol H2O and 1.0 × 102mol C were present in a 1.0L container. What is the value of Keq? a) 0.063 b) 16 c) 0.16 d) 6.3 I got b, but I'm not too certain
asked by Jane 
Finance
The following balance sheet extract relates to the Allied Insurance Company Bonds Payable $1,000,000 Preferred Stock $2,000,000 Common Stock $3,000,000 Additional Information: 1. The bonds are 8%, annual coupon bonds, with 9 years to maturity and are
asked by friend 
Yuba Community
A total of 432 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student tickets sold was two times the number of adult tickets sold. How many adult tickets were sold? Click on "Explain" if you need
asked by Catherine Diaz 
School
What are some examples of school problems that student council can fix? Like unhealthy cafeteria food and too much homework.
asked by Anonymous 
Physics
What is the ratio of the wight of a man when he is in a tunnel 1000 km below the surface of the Earth to his weight at the surface? ...I'm not sure how to proceed, not because I don't know how to do it, but because I have no idea how to come up with a(g)
asked by Nora 
Physics
A spring with a spring constant of 531 N/m is used to propel a 0.363kg mass up an inclined plane. The spring is compressed 37.7 cm from its equilibrium position and launches the mass from rest across a horizontal surface and onto the plane. The plane has
asked by Demi 
geometry
State whether the following numbers make a right triangle and a Pythagorean triple: 2, 2 root 2, and 2 root 3 I am pretty sure that both answers are no, because 2 squared and 2 root 2 squared equal 8, whereas 2 root 3 squared equals 6, so it cannot form a
asked by Morgan 
math
Brenden read 3/4 of a book that was 7/8 inch thick . how much of the book , in inches , did he read ?
asked by autumn 
Trigonometry
Write the equation of a sine wave (also called sine curve) given: 1. amplitude = 2 period = pi/2 phase shift = pi/8 vertical shift = 1 2. amplitude = 4 period = 3 phase shift = 2 vertical shift = 1 3. amplitude = 4 period = pi phase shift = (pi/3)
asked by Zeke 
math
Of 25 students who took a test in math , only 5 received A's .what fraction of the class received an A on the test? Write your answer in simplest form.
asked by autumn 
statistics
A test consist of 10 multiple choice questions, each with five possible answers, one of which is correct. To past the test a student must get 60% or better
asked by pat 
Macroeconomics
working on homework & stuck on these three questions. Someone please check if I answered these correctly; Thank you! 1. In the event of excess supply in the coffee market __________. A. the price of coffee will increase B. the price of coffee will decrease
asked by Beth 
physics
Assume the muscle is 37C and is separated from the outside air by layers of fat and skin. The layer of fat, at a particular location on the skin, is 2 mm thick and has a conductivity of 0.53 W/mK. Finally, the outermost epidermal layer is 0.1 mm thick with
asked by carolyn 
physics
You hold a hose 45 degrees to the horizontal and at a height of 1 m from the floor. The water reaches a maximum distance of 10 m from where you are standing. Now you place your thumb over the end of the hose to occlude the opening by 80%, which in turn
asked by carolyn 
Math
Jamie wants to build a cd case for his room. The wood he will use is 3/4 inch thick and the four shelves are 6 3/8 inch apart. What is the height of the cd case?
asked by Diane 
physics
two point charge q1=50c , q2=10c are lactated at (1,1,3)m, and (3,1,0)m, respectivly. Find the force on q1.?
asked by dlawer 
Chemistry
A 5.00 L flask with mass of 463.873 g is filled with Ar gas to 3 atm pressure at 292 k. (19 celsius + 273) what is the mass of flask and gas?
asked by Christine 
Geometry help
1. If a square has a radius of twelve, would its apothem be 6sqrt2? What will its area be? How would I solve it? 2. If triangle has a radius of 12, would its apothem be 7sqrt3? How would I find the area? 3. How would I find the area of a hexagon if it's
asked by Anonymous 
Legal Studies
Identify key personnel working in the courtroom.Outline their role.
asked by aisha 
quantum
Consider a particle with mass m bound to a potential v(x) = k^2x. Using the WKB quantization condition, find the energy eigenvalues .
asked by physics 
finance
Two bonds A and B have the same yield to maturity. A prices at 90 while B prices at 110. Which one has the higher coupon?
asked by sasi 
essay
I need to come up with an outline for a essay on the differences between the North usa and South? Any ideas? Thanx if u can help
asked by katy 
chemistry
Uranium metal can be produced by reaction of uranium tetrafluoride (UF4) with calcium metal (Ca). The byproduct of this reaction is calcium fluoride (CaF2). The reactor is charged with 292.0 kg of UF4 and 47.0 kg of calcium. Assume that the reaction goes
asked by ocre 
English
I am writing argumentative essay about learning in the traditional classroom. I confused what my teacher means by presenting the other side in a presentation?
asked by m 
Differential Equation 1
Solve x^3y^'''+5x^2y^''+7xy^'+8y=t+e^(t)
asked by ijat 
algebra
A man drove at the rate of 50 km an hour while outside a city and 30 km an hour while within the city. If a trip of 33 km took him 54 minutes, how much of the trip was outside the city?
asked by Have a Problem 
News
Bakit ang lindon ay hindin natin maforecast? Why was an earthquake cannot be forecasr?
asked by Marie Delle C. Cabigon 
english essay
Pls help me..give me a best sample of introduction (paragraph 1) and Conclusion(p.6) & keywords of the contents(p.25) about "Why people should quit gambling."
asked by mandy 
Music
How to compose a music?
asked by Marie Delle C. Cabigon 
math
A girl bought some pencils, erasers, and paper clips at the stationery store. The pencils cost IDR. 1000 each, the erasers cost IDR. 500 each and the paper clips cost 2 for IDR. 100. If she bought total cost IDR. 10000, how many of each did she buy ? I
asked by Iman 
math
Tshabalala wants to reconstruct his farm to separate his sheep and goats. Therefore he decided to enclose a rectangular field with a fence and divide it into two smaller rectangular fields by constructing another fence parallel to one side of the field. He
asked by kay206 
Math
Jorge wants to bring 150 cookies. How much flour will he need to make 150 cookies? if I divide 60 into 150 = 25. will I need 25 cups of flour to make this true?
asked by KeeKee 
finance
You are a risk manager that needs to hedge the IR risk on a portfolio of bonds. Your hedging instruments are futures and swaps. Discuss how you would go about mitigating sensitivity to changes in the interest rates. You may consider either bucketing the
asked by sasi 
finance
The bonds we discussed in class have positive convexity. What does a bond need to have in order for convexity to be negative? Do you know of such instruments?
asked by sasi 
linear algebra check
Use the GramSchmidt process to transform the basis [1 1 1] , [0 1 1] , [2 4 3] for the Euclidean space R3 into an orthonormal basis for R3. (Enter each vector in the form [x1, x2, ...]. Enter your answers as a commaseparated list.) so i went through the
asked by sara 
math
Twenty five students in a class were selling pizzas door to door in a community of 500.if the town was divided evenly among the students , how many did each student visit?
asked by autumn 
Physics
A tangential force acts on the rim of a 2.0 kilogram diskshaped wheel (0.50 m radius) and gives the wheel an angular acceleration of 4.8 rad/s^2. Neglect friction and find the magnitude of the force.
asked by Xavier 
Physics
The current flowing in a solenoid that is 20.9 cm long and has a radius of 2.40 cm and 552 turns decreases from 3.51 A to 1.03 A in 0.250 s. Determine the magnitude of the induced electric field inside the solenoid 1.20 cm from its center.
asked by Kayla 
math
Say if these numbers make a right triangle and a Pythagorean triple: 2, 2 square root 2, and 2 square root 3. I am confident that the answer for both parts of the question is no, because when 2 is squared and when 2 square root 2 is squared it is larger
asked by Erin 
math
Jayden had some items to store in a storage unit that was 10 feet long , 8 feet wide , and 10 feet high. What is the volume of the storage unit ?
asked by autumn 
Differential Equation 2
Construct the Fourier series of the following periodic function. f(x)={█(cosx,π≤x
asked by ijat 
child development
One way to test for the validity of research methods is to A. compare children’s answers to different halves of the same test. B. test for interrater reliability. C. compare children’s answers on different forms of the same measure. D. see how
asked by younes 
algebra
A man drove at the rate of 50 km/h while outside a cityand 30 km/h while within the city. If a trip 33 km took him 46 minutes, how much of the trip was outside the city?
asked by Have a Problem 
math
solve: 2x + 5 = 3x  9
asked by jean 
finance
You have a discount bond with a time to maturity of one year. The market price of this instrument is 97%. You want the model price to match it while you build you yield curve with ED futures; the contracts price as follows: 1st = 99, 2nd = 98, 4th =97.
asked by sasi 
finance
I give you a flat yield curve from 0 to 4 years: 2%. You have a five year swap contract that pays annually and want to use it to extend the curve to 5 years. How low can the swap par rate go before forward between 4 and 5 years goes negative?
asked by sasi 
Statistics
Find the margin of error for a 95% confidence interval for estimating the population mean when the sample standard deviation equals 100, with a sample size of (i) 400, (ii) 1600. What is the effect of the sample size? (b) Find the margin of error for
asked by Courtney R 
math
If student A sold 1/5 as many as student B who sold 90 , how many pizzas did student A sell ?
asked by autumn 
Physics
How far does water travel if you restrict the hose opening by 80%
asked by Carolyn 
math
Adam wants to compare the fraction 2/5 1/6 and 1/3 he wants to order them from least to greastest and rewrite them so they all have the same denominator explain how Adam can rewrite the fraction
asked by zoie 
Trigonometry
A golfer hits a ball off of the ground with an angle of elevation of 10 degrees and an initial velocity of 240 feet per second. There is an 80 foot tree 160 yards in front of her. Will she hit the ball over the tree?
asked by E 
Differential Equation
Solve (ye^xy+1)dx+(xe^xy+2)dy=0,y(0)=0
asked by ijat 
Physics
A tangential force acts on the rim of a 2.0 kilogram diskshaped wheel (0.50 m radius) and gives the wheel an angular acceleration of 4.8 rad/s^2. Neglect friction and find the magnitude of the force
asked by Chris 
child development
10. In field experiments, researchers A. formulate conclusions based on extensive field notes. B. use treatment conditions that already exist naturally. C. avoid confounding variables by exposing the same participants to all treatments. D.
asked by younes 
child development
10. In field experiments, researchers A. formulate conclusions based on extensive field notes. B. use treatment conditions that already exist naturally. C. avoid confounding variables by exposing the same participants to all treatments. D. randomly
asked by younes 
Law
Describe the role of the court in Australia's legal system.
asked by Help Needed. 
sociology
why is it impotrant for social workers to document essential and relavent details about their client
asked by Anonymous 
Math
The equation of the line a is y = 2x + 5. Find the equation of the image of line a after a dilation centered at the origin with scale factor 2. 4x + 10?
asked by Anonymous 
Math
Please explain to me 1 1/2 times the recipe.
asked by KeeKee 
math
4mLA=5mLB, find mLC
asked by manisha 
Sports
What are some good disciplinary enforcements for sports teams? Say for instance, like a dance team? I need help!!
asked by Anonymous 
Math
Please explain to me 1 1/2 times the recipe. are we dividing this by 2 which will be 5/2=2 1/2?
asked by KeeKee 
science
The analysis of lead (Pb) in a sample of solder was carried out using atomic absorption spectroscopy as follows. 1.013 g of solder was completely dissolved in a small volume of nitric acid and the solution made up to 1.000 L with distilled water. A 50.0
asked by Tasha 
chemistry
Don't know where to begin. 1) A thermally activated process (a reaction) takes four minutes at 811°C. How long will it take (in minutes) at 748°C if the activation energy is 150 kJ/mol?
asked by ocre