Questions Asked on
February 21, 2015

science
an ice cube, a glass of cold water, and a swimming pool are each exposed to the same amount of sunlight on a hot day. after five minutes, the ice cube is melted and the cold drink is two degrees warmer, but the temperature of the swimming pool remains
asked by Oscar 
physics
Estimate the change in gravitational potential energy when a person with mass 95kg rise from bed to a standing position. Assuming that the center of mass of a person is elevated by approximately Δh=0.50m.
asked by phys 220 
science
Why did a portion of the tabletop get cold when Natasha placed her cold drink on the table? (1 point) The table’s molecules were vibrating more slowly in that area. The table’s molecules had spread further apart in that area. The table’s molecules
asked by Oscar 
3 other questions.
Sorry. Elizabeth wants to turn her diary entry into a fictional short story. Which BEST identifies a structural change that would allow readers to know more about the thoughts and feelings of Stevie and Elizabeth's parents? A)changing the point of view
asked by Annabelle 
Physics
A 25.0 m tall hollow aluminum flagpole is equivalent in strength to a solid cylinder of aluminum 3.50 cm in diameter. A strong wind bends the pole much as a horizontal force of 900 N exerted at the top would. How far to the side does the top of the pole
asked by Jimmy 
Calc
A plane is heading on a bearing of 200° with an air speed of 400 km/h when it is blown off course by a wind of 100 km/h from the northeast. Determine the resultant ground velocity of the plane.
asked by Amy 
Accounting
A credit to a liability account was posted to an owner's equity account. This would cause __________. A. assets to be overstated B. liabilities to be understated C. owner's equity to be understated D. net income to be overstated i think its D A credit to
asked by Karen 
physics
Two arrows are fired horizontally with the same speed of 31.8 m/s. Each arrow has a mass of 0.149 kg. One is fired due east and the other due south. Find the magnitude of the total momentum of the two arrow system in kgm/s. (Hint: How do you combine
asked by Hannah 
life orientation
what are the symptoms of intrapersonal?
asked by lucia 
Trig application
I have been working on this problem but I am not sure I am doing it right. During takeoff an airplane's angle of ascent is 18 degrees and its speed is 275 feet per second. A. Find the plane's altitude after 1 minute. B. How long will it take for the plane
asked by Hutch 
Statistics
A) Identify the question, population, and sample. b) Discuss any potential bias or lurking variables that may affect the results.? c) Write about the extent to which we can generalize the findings to all people who use cell phones. Stewart Fist reported
asked by Tamcia 
Trig application
I am having trouble with this question. A privately owned yacht leaves a dock in Myrtke Beach, South Carolina, and heads toward Freeport in the Bahamas at a bearing of S 1.4 degrees E. The yacht averages a speed of 20 knots over the 428nautical mile
asked by Hutch 
Pre ALGEBRA
A solid with at most one base cannot be which of the following? A) cone B) cube C) pyramid D) sphere Is it A or D? MS SUE PLEASE HELP ME
asked by Oscar 
English
Contains dialogue is created from the mind of the author. A.B Written in chronological order, following the author from the beginning of his/her life to the end  A.B? Does not necessarily follow the main character from beginning of his/her life to the
asked by Annabelle 
science
both carbon dioxide and water are pure substances. how are they similar to each other? A. Both substances have a set ratio of atoms that cannot be separated by physical means. B. Both substances have a set ratio of atoms that can be separated by physical
asked by Oscar 
chemistry
Consider the following equation, which represents the combustion of hydrogen sulfide. 2H2S(g)+3O2(g)¨2SO2(g)+2H2O(g) What volume, in liters, of SO2 is formed when 120L of H2S(g) is burned? Assume that both gases are measured under the same conditions.
asked by pp 
algebra
noj has the following test scores 69 74 76 84 91 his teacher will allow him to retake the test on which he scored lowest noj wants an average of at least 82 determine the least number of additional points noj must score on the retest
asked by Anonymous 
Math
An adult polar bear walks at an average rate of 5 kilometers per hour. 1. write an equation to find k, the number of kilometers a polar bear bear can walk in h hours. 2.make a table to show the relationship between the number of kilometers k a polar bear
asked by Angelina 
Anthropology
Ms.Sue, I need your assisting please. Can you please give me advice on this Chipolatta Culture Music, I need you. Thank you. The Chipolatta music instruments consist of things like, drums, flutes, and other percussion instruments including their voices
asked by Jimmy 
financial management
you have $42,180.53 in a brokeage act & you plan to deposit an additional $5000 at the end of every future year until your accout totals $250,000. you expect to earn 12% annually on the account. How many years will it take to reach your goal?
asked by Anonymous 
Chemistry
A solution is prepared by dissolving 25.0 g of pure HC2H3O2 and 25.0 g of NaC2H3O2 in 700 mL of solution (the final volume). (a) What is the pH of the solution? (b) What would the pH of the solution be if 65.0 mL of 0.650 M NaOH were added? (c) What would
asked by Dean 
Math
Flying to the wind, an airplane takes 4 hours to go 960 km. The same plane flying with the wind takes only 3 hours to make the same trip. Find the speed of the plane and the speed of the wind. I wasn't here for the lesson from my teacher but told me to ask
asked by Njex 
Math
An aeroplane is taking off from landing field has to run 500 metres.it leaves the ground in 10 seconds.what is the acceleration?
asked by W.c 
Accounting
A debit to the capital account was posted to an expense account. This would cause __________. A. assets to be overstated B. liabilities to be understated C. capital to be overstated D. expense to be understated i think its D
asked by Karen 
math
A man who can swim at 5km/h in still water swims towards the east to cross arriver. If the river flows from north to south at the rate of 3km/h a) Calculate: i) The resultant speed ii) The drift b) If the width of the river is 30m, find the time taken, in
asked by kudu 
mathematics concepts
Fraction symbols can usually be safely introduced A. at the beginning of third grade. B. near the end of first grade. C. near the end of third grade. D. at the beginning of second grade. my answer is c.
asked by Brittney 
Math
The regular price of a sweater is $32. For a sale, the price of the sweater is marked down 30%. What is the price of the sweater?
asked by Cristina 
science
Why does the energy of a sound wave decrease over time?
asked by wilmary 
chemistry
could one separate the components of a mixture of PbCl2 and Mg(OH)2 using only cold water?
asked by Sam 
Chemistry
To what volume should you dilute 124mL of an 8.10M CuCl2 solution so that 49.0mL of the diluted solution contains 4.81g CuCl2? Molar Mass of CuCl2= 134.45 g/mol Convert: 4.81g * (1mol/ 13.45g CuCl2)= 0.0358mol CuCl2 [CuCl2]= M= mol/L= (0.0358mol/ 49ml) *
asked by Nyle 
sociology
Hume would agree with which statement about ethics? (Points : 1) There is a direct connection between the way that things are and the way they ought to be. Just because certain things are, does not mean that is the way they ought to be. One can use
asked by chistopher prysock 
Business math
Compute the difference between the ordinary interest and the exact interest for a loan with a principle amount of $1100 at 12 percent for 120 days. I'm getting $0.60 Can you check my work?
asked by Casey 
College Physics
A 3.0 m long light board with negligible weight is supported at each end by cables. a painter weighing 900 N stands 1.o m from the left cable. Find the tension in each cable.
asked by Anonymous 
Physics
The same voltage is applied between the plates of two different capacitors. When used with capacitor A, this voltage causes the capacitor to store 17 μC of charge and 5.7 x 10^5 J of energy. When used with capacitor B, which has a capacitance of 6.9 μF,
asked by e 
math
Amanda's punch recipe : 7 parts mixed fruit juice, 2 parts of lemonade [Question : how much lemonade will she need to make 180 fluid ounces of punch ?]A .140 Fluid ounces or B. 40 Fluid ounces C. 36 Fluid ounces D. 60 Fluid ounces i think the answer is b
asked by Jade 
ap physics
A 0.461 kg mass is attached to a spring and executes simple harmonic motion with a pe riod of 0.59 s. The total energy of the system is 2.4 J. Find the force constant of the spring
asked by arabelle 
statistics
Heights of women have a bellshaped distribution with a mean of 158 cm and a standard deviation of 8 cm. Using Chebyshev’s theorem, what do we know about the percentage of Women with heights that are within 3 standard deviations of the mean. What are the
asked by slomomo 
calculus
A woman is attached to a bungee cord from a bridge that is 38m above a river. Her height in meters above the river t seconds after the jump is y(t)=19(1 + e^1xcos(t)) for t>0. What is her velocity at t=1 and t=4?
asked by Zee 
sociology
Which of the following examples best demonstrates to most people that ethical progress has taken place over the past 200 years? (Points : 1) Laws that prohibit discrimination based on race Laws that have increased speed limits Laws that prevented women
asked by Bryan Alvarez 
Physics
Two identical capacitors store different amounts of energy: capacitor A stores 2.5 x 10^3 J, and capacitor B stores 4.8 x 10^4 J. The voltage across the plates of capacitor B is 12 V. Find the voltage across the plates of capacitor A.
asked by e 
maths
costs $12.50 to see a movie at a theater near Jason’s house. It costs only $1.95 to rent a DVD from an online service. A DVD player costs $125. To the nearest whole number, how many movies must Jason watch on DVD instead of at the theater before he
asked by Anonymous 
English
Use a cliche in a sentence that you create. the sentence that I created is. My sister and I are so much a like that most people say we are " two peas in a pod". Did I do the sentence correctly
asked by Rebecca 
physics
A shuffleboard disk is accelerated at a 9.7m/s^2 from rest to a speed of 6.0m/s. What distance does the disk travel?
asked by Anonymous 
Math
Evaluate 6 log2 ∛64 +10log3 (243)^1/5)
asked by kudu 
chemistry
Two moles of an ideal gas initially at 27C and 1 atm pressure are compressed isothermally and reversibly till the final pressure of the gas is 10 atm. Calculate the work done. (R=8.314 JK1mol1)
asked by anu 
statistics
A consumer advocacy group claims that the mean amount of juice in a 16 ounce bottled drink is not 16 ounces, as stated by the bottler.
asked by Anonymous 
American History
Hi there. I was just wondering whether the blundering generation thesis about the civil war boils down to a belief that individual choices caused the war. I wrote in my notes that it is linked to the belief that the civil war was inevitable but that
asked by Rissa 
grammar
Can a rabbit run fast? yes,it can. (Is)
asked by Anonymous 
English
Can someone read my eight sentence paragraph. A high school diploma is very important to me. With a high school diploma I can show my children that your never to old to go back to school. Which will set a good example for my children to show them they need
asked by Rebecca 
Math
the sum of the integers from 1 to 10, inclusive, is 55. What is the sum of the multiples of 5 from 5 to 50 inclusive? Which equation would I use?
asked by Bethany 
Trig application
I worked this problem out but I do not fully understand what I am doing. Fire tower A is 30 kilometers due west of fire tower B.. A fire is spotted from the towers, and the bearings from A and B are N 76 degrees E and N 56 degrees W, respectively. Find the
asked by Hutch 
statistics
A student government representative at a local university claims that 60% of all the undergraduate students favor a move to Division I in college football. A simple random sample of 250 undergraduate students is selected. What is the probability that the
asked by LO 
math
The distance between towns M and N is 280 km. A car and a lorry travel from M to N. The average speed of the lorry is 20 km/h less than that of the car. The lorry takes 1 h 10 min more than the car to travel from M and N. (a) If the speed of the lorry is x
asked by kudu 
math
A salesman gets a commission of 2.4% on sales up to Shillings 100,000. He gets an additional commission of 1.5% on sales above this. Calculate the commission he gets on sales wroth shillings 280,000. 100000(.024) + 0.015(280000  100000) 2400 + 2700 5100
asked by kudu 
sociology
Ethical theorists would be comfortable making which statement? (Points : 1) Ethical principles and ideas must always conform to the laws of a country. Ethical principles and theories can contradict laws of a country. It is important to not make anyone
asked by chistopher prysock 
Chemistry
(For fischer esterification) If you had collected the forerun from your distillation and tested it in the gas chromatograph, what would the most predominant compound be? Isopentyl alcohol Isopentyl acetate Water acetic acid
asked by Ley 
trigonometry college
For two hours, a boat sails straight from port A to port C with a speed of 50 miles per hour. Port B is due east of port A, and the bearing of line segment BC is 20 degrees south west. Find the bearing of line segment AC. I really don't know what's the
asked by jessica mantujac 
sociology
Which of the following examples best demonstrates to most people that ethical progress has taken place over the past 200 years?
asked by Bryan Alvarez 
math
A trough (a place where horses and sheep drink water) has the shape of a halfcylinder with length 4 m and radius 20 cm. Water is poured into the trough at a constant rate of 300 cm3/s. At what rate (in cm/s) is the level of the water in the trough rising
asked by emy 
college physics
a 3m long light board with negligible weight is supported at each end by cables. a painter weighing 900 N stands 1m from the left cable. find the tension in each cable,
asked by Anonymous 
Math
an adult manatee eats approximately 100 pounds of aquatic food per day. write an equation to find p, the numbeer of ponds of food an adult manatee eat in d days
asked by Angelina 
maths
Saudi Arabia has proven oil reserves of 2.63 1011 barrels. Kuwait has proven oil reserves of 9.78 1010 barrels. Canada has proven oil reserves of 1.789 1011 barrels. What are the combined proven oil reserves of the three countries?
asked by Anonymous 
Math
Find the point of intersection on the graphs of 2x+5y=15 and x3y=6 How do I do this?
asked by Rachel 
Urgent maths homework help
At a boarding school, in the evening, 9 students always take walks in groups of 3. How can the groups be arranged so that each person walks in a group with every other person exactly once in 4 days? I would like to know whether there is a trick to these
asked by paul 
Civics
Which was an outcome of the U.S. supreme court decision in Brown v. Board of education (1954)?
asked by Gibby 
chemistry
PLZ help me understand the way of solving this equation quick A 0.07 mol sample of octane C8H18 absorbed 3.5*10^3 j of energy. calculate the temperature increase of octane if the molar heat capacity of octane is 254.0 j/k*mol
asked by jack 
maths
Sid and Libby are planning to sell pies at a local fair. They spend $200 to rent a table at the fair. Their costs for ingredients, other supplies, baking, and packaging are $3.00 per pie. Sid and Libby plan to sell the pies for $8 each. How many pies must
asked by Anonymous 
Physics
A 5.0 kg concrete block rests on a level table. A 3.7 kg mass is attached to the block by a string passing over a light, frictionless pulley. If the acceleration of the block is measured to be 1.0 m/s2, what is the coefficient of friction between the
asked by Jordan 
maths
In a class, there are 12 girls and 14boys. Express in its simplest form, the ratio of girls to the total number of students in that class.
asked by tuimano 
Chemistry
A student added some bromine (reddish orange) in some carbon tertrachloride to a sample of butane in a test tube and placed it in a dark cupboard. When the student removed the test tube it still had the reddish orange colour. When the test tube was left on
asked by Lando 
maths
. Louisa has $4,500 in her savings account. She has to choose between two savings plans. Under plan A, she will increase her account balance by 10% per year. Under plan B, her account balance will increase by $525 per year. If she plans to keep her money
asked by Anonymous 
riddle
what starts with a t ends with a t and is full of t.
asked by lululo 
chemistry
A student added some bromine (reddish orange) in some carbon tertra chloride ro a sample of butane in a test tube and placed it in a dark cupboard. When the student removed the test tube it still had the reddish orange colour. When the test tube was left
asked by Lando 
Math
The fifth term of an arithmetic sequence is 22 and the 15th term is 62. Find the 100th term and the sum of the first 60 terms. I'm having trouble figuring out how to do this.
asked by Lilly 
math
Jill, Meg, and Beth are sisters. Jill is 2 years younger than Meg. Beth is half as old as Meg. Use the same variable to write three algebraic expressions based on this situation. Tell what the variable represents and what each expression represents. THANK
asked by kymy 
math
A wire of length 4 m is cut in two parts and the first part is bent in the shape of a square, while the second part is bent in the shape of an equilateral triangle. For which lengths of these parts the total area enclosed by the square and the triangle is:
asked by emy 
math
A vector can be used to represent the path of a drill tip used to bore a deep mine shaft in Sudbury one quarter of the way to the centre of the Earth. Represent the vector using a directed line segment and Cartesian coordinates and describe which
asked by anon 
chemistry
Put the following compounds in order of INCREASING oxidation number of N: N2H4, NO31, N2, NH3 ?
asked by katy 
Math
How many times larger is the area of a square (Length of Sides = A) than the area of an equilateral triangle (Length of Sides = 0.5A)?
asked by Emma 
Math
Put 25 marbles into 3 piles, each has an odd # of marbles. How many ways can you do this??? Do you have the formula?
asked by Bong 
physics
A ball is thrown straight up from the ground at 10m/s, and simultaneously a ball is thrown straight down a 10mhigh ledge at 10m/s. At what height do the two balls pass?
asked by vera 
physical science
A car travels east for 15km at a speed of 30km/h .it then turns around and returns along the same path at 60km/h.what is the cars average velocity
asked by comfort 
Physics
A certain force gives mass m1 an acceleration of 13.0 m/s2 and mass m2 an acceleration of 3.6 m/s2. 1) What acceleration would the force give to an object with a mass of (m2m1)? 2) A certain force gives mass m1 an acceleration of 13.0 m/s2 and mass m2 an
asked by Jordan 
Physics
What is the capacitance of a capacitor that stores 5.2 μC of charge on its plates when a voltage of 4.8 V is applied between them?
asked by e 
physics
state coulombs law
asked by abdi 
Human Geography
What does "challenging white privilege" means?
asked by Ana 
Accounting
A debit to a revenue account was posted to an expense account. This would cause __________. A. expenses to be overstated B. revenue to be understated C. expenses to be understated D. capital to be overstated i believe its C
asked by Karen 
mathematics concepts
Joseph is making different shapes with a rubber band and a geoboard. Which of the following would be a geometric concept that Joseph is informally exploring? A. Estimation B. Patterns C. Volume D. Probability my answer is b.
asked by Brittney 
math concept
Sarah understands that if there are 11 ones, the first 10 move over to the tens column as one unit (i.e., one group of 10). What concept does this understanding represent? A. Renaming B. Regrouping C. Borrowing D. Place value my answer is a
asked by Brittney 
General Chemistry HELP!
Research and describe one current application of the knowledge of the atom. This application can be in any field of your choice. This means the field can be scientific, such as medicine, or nonscientific, such as entertainment. The purpose of this
asked by John 
Math
Find the slope of the line L1 given that L1 is perpendicular to L2 and L2 passes through (3,1) and (5,7). How do you do this kind of problem
asked by Cat 
Calculus
Evaluate: the integral from pi/8 to pi/6 csc2xcot2xdx
asked by Anonymous 
Math
A video game that originally costs $68 is on sale at a 15% discount. What is your final cost of the video game If there is a 5% sales tax?
asked by Mason 
math
how can find on the particular solution of the linear DE's d^3y/dx^3+4d^2y/dx^2+4dy/dx=exp(2x)
asked by assma 
math
A group of people planned to contribute equally towards a water project which needed Ksh 200,000 to complete, however, 40 members of the group without from the project. As a result, each of the remaining members was to contribute Kshs 2,500. (a) Find the
asked by kudu 
temple
Ethical theorists would be comfortable making which statement?
asked by Bryan Alvarez 
Physics
A 70 kg person is having a tugofwar. The rope is horizontal and 1.3 m above the ground. This person’s center of mass is 1.0 m from the ground when he is in an upright standing position. If the force his opponent exerts on the rope is 400 N, what angle
asked by Rachel 
Physics
Three capacitors (3.83, 5.89, and 12.9 μF) are connected in series across a 58.0 V battery. Calculate the voltage across the 3.83 μF capacitor.
asked by Anonymous 
soc
A justified belief is (Points : 1) the expression of a view that may not have evidence supporting it. a confidently held belief that might merely be an opinion. a claim for which one has evidence and warranted trust. all of the above. none of the above.
asked by chistopher prysock 
English
Five sentence paragraph. To make a perfect turkey sandwich you will need, butter knife, turkey, cheese,mayo, lettuce, tomato and two slices of bread. Next, place the mayo evenly on both side of the bread. On one slice of the bread place the
asked by Justin 
business math
Compute the total amount to be repaidon a $1920 loan at 8% for 135 days. Base your calculation on exact interest(365day year). I'm getting $2335.29. Can you check my work?
asked by Renae 
Math
determine the point of intersection for this pair. y=3x2 and 2x+3y=5
asked by thez 
chemistry
how many CO would be needed to reduce 19.1 grams of iron (III).
asked by monique 
math
please help on this problem. 2x+4(3x4)=84. cant get the answer. thank you
asked by sam 
math
The length and breadth of a rectangular paper were measured to be the nearest centimeter and found to be 18 cm and 12 cm respectively. Find the percentage error in its perimeter.
asked by kudu 
chemistry
A dry ethene exerted a pressure of 680mmhg at 17degree celcius.what pressure would be exerted if the sample is collected over water at 17degree celcius? (s.v.p at 17degree celcius=14.0mmhg)
asked by Anonymous 
physics
A 3.9kg block moving at 2.0 m/s toward the west on a frictionless surface has an elastic headon collision with a second 0.80kg block traveling east at 3.0 m/s. a)Determine the final velocity of first block. Assume due east direction is positive.
asked by phys 220 
Math
The line that passes through (4,3r) and (2+r,6) is perpendicular to the line with equation 5x+3y+12=0. find r.
asked by Cassandra 
government
When the Court decides a case, it bases its decision on
asked by bb 
Calculus
Evaluate by Usubstitution: the integral of xcubedroot(x2) dx
asked by Anonymous 
math
how can find sum (x) from x=1 to x=n
asked by assma 
Math
Question: 1/2(x+3) + 5x = 2  4/3 (12x) My work: 5 1/2x + 3/2 = 2/3 + 8/3x 33x + 9 = 4 + 16x 17x = 5 x = 17/5 Did I do this correctly?
asked by Mason 
Math
Determine the solution set of 2x3y
asked by Maggie 
math
prove sum(x)=n(n+1)/2 from x=1 to x=n
asked by assma 
math
Pharmacy Goods has a total of $423,400 sales. Beginning inventory total cost was $105,850 and ending total cost was $127,020. What is the turnover rate?
asked by zahidul 
Maths
Write the following number in scientific notation 2 500 001
asked by Rudolph 
maths
Can someone help me to solve these questions please? 1) 3^x+1=9^x. Find the value of x. 2) find the value of m for which. 3^2M^1=243.
asked by mohammad 
Maths
Investigate and illustrate the behavour of the following geomentric series with r>1 2+4+8+16+32+64+.......... So s§=? Use at least three examples
asked by Rabelani 
physics
A bicycle has wheels with a diameter of 0.570 m. It accelerates uniformly and the rate of rotation of its wheels increases from 181 rpm to 260 rpm in a time of 19.9 s. Find the linear acceleration of the bicycle. i tried converting everything to linear to
asked by tessa 
BioMechanics
You have a subject (height = 150 cm, mass = 85 kg) lying prone on a moment table with their feet pressed against the foot rest. Assuming that you zeroed the scale before the subject got on the table, the scale now reads 40 kg. Where is the centre of mass
asked by Jessica 
AP CALC
1. Area of the region between the graph of y=2x^23x and the x axis from x=3 to x=1 is a)62/3 b)97/3 c)16/3 d)20/3 e)92/3 I got e but it's incorrect
asked by Rachel 
Business math
The clarkdell school system has three schools. School #1 has 500 students School #2 has 600 students School #3 has 400 students What part of a $15,000 allocation will go to school #2? 15,000 divide by 3= $5,000 Will you check my answer?
asked by Devon