Questions Asked on
June 11, 2011

12th physics
for what angle of incidence the lateral shift produced by parallel sided glass plate is (i) zero (ii) maximum
asked by Arya 
Life orientation
1. Identify environmental or human factor that causes ill health,accidents,crises,& disasters within communities. 2. Discuss ways in which the human or environmental problem impacts on the community
asked by Esther 
econ.
2. A company is considering building a bridge across a river. The bridge would cost $2 million to build and nothing to maintain. The following table shows the company¡¯s anticipated demand over the lifetime of the bridge: Price per crossing ($) 8 7 6 5 4
asked by fred 
physics
A gocart has an initial speed of 23.4 m/sec. Fifteen seconds later the gocart has a final speed of 36.8 m/sec. What is the magnitude of the gocart's displacement?
asked by Kate 
Chemistry
Which of the following bonding patterns DOES NOT happen? CHC =C= HH All of these bonding patterns can happen.
asked by Amara 
chemistry
What kind of reaction occurs when a molecule of glucose reacts with oxygen to give carbon dioxide and water? a.exothermic reaction b.endothermic reaction c.synthesis reaction d.irreversible reaction
asked by nina 
chemistry
The enthalpy of combustion of carbon to carbon dioxide is 394 kJ according to the equation: C (s) + O2 (g) > CO2 (g) How many kJ of heat are released when 24.0 g of carbon are burned in an excess of oxygen
asked by lo 
psychology
write on the topic Acquire ImmunoDeficiency syndrome (AIDS)and submit a 35 page typed,APA style paper.Title and reference pages are separate.The paper must include the folloing information:description of the condition/syndrome,onset and contributing
asked by tonia 
chemistry
When water is cooled to a temperature x , it gets converted into ice at temperature x by a process called p. And when ice at temperature x is warmed, it gets converted into water at the same temperature x in a process called Q a) what is the value of
asked by rahul 
English
Seven letter word , second letter an a , fourth letter an e, and sixth letter an u, what is this word?
asked by Afifa 
chemistry
The heat energy needed to raise the temperature of 10.0 g of metal by 10.0°C would exceed 25 calories for which metals on the periodic table?
asked by Sarah 
Algebra
The formula T=2π√L/480 can be used to find the period (T in seconds, the time it takes a pendulum to complete one cycle) of a pendulum that is L cm long. (a)Rewrite this formula using rational exponents. Don't forget to rationalize the denominator.
asked by Melvin 
chemistry
what is the temprature at which molecular motion ceases??
asked by urja 
historyCivil War
Sorry Sra...your sites didn't help..i was in sooo many sites last two days...no discussion found on this question..you don't know the answer to this ?
asked by Joanne 
statistics
A random sample of 51 of the largest companies in the united states gave the following P/e ratios 11 35 19 13 15 21 40 18 60 72 9 20 29 53 16 26 21 14 21 27 10 12 47 14 33 14 18 17 20 19 13 25 23 27 5 16 8 49 44 20 27 8 19 12 31 67 51 26 19 18 32 Use a
asked by Anonymous 
Physics
In the photoelectric effect, what happens to the stopping voltage when the light frequency is decreased?
asked by John 
Math
How do you factor: 9x^2y^3  3x^3y^2  15xy i got: 3xy(3xy^2  x^2y  5) But how do you factor it further to simplify it? Thx
asked by Happy Face 
history
The earilest evidence for the demestication of the horse is found in presentday? A. Serbia B.Malta C.Ukraine D.bulgaria
asked by tomtom 
derivative
41) Find the derivative. h(x)= (3x^2 + 1)^3 / (x^2  1)^4 This is where I am at the moment.... h'(x)= (x^21)^4 (3)(3x^2+1)^2(6x)  (3x^2+1)^3(4)(x^21)^3(2x) This is what I am trying to get....(not final answer) =2x(x^21)^3(3x^2+1)^2[(9)(x^21) 
asked by Steff 
Nutrition
Hello. I wanted to know what "strengthening a weakness" means? For example, let us say my weakness is high sugar foods. Would strengthening my weakness of high sugar foods mean that I should add healthy foods instead or does it mean that I should add more
asked by Sarah 
physics
A hockey puck of mass 0.450 kg is sliding across the ice. However, because of the frictional force between the puck and the ice, the motion of the puck is stopped in 15.8 seconds. Determine the magnitude of the frictional force.
asked by Dale 
physics
An electric motor is tested and found 76% efficient. if the input work is 400 J, what is the motors output work?
asked by han 
mathematics
find the smallest and largest values of the function f(x)=(x+1)∛x² on the interval [4/5;3]
asked by lisa 
physics
An electron travels 1.91 m in 4.72x10^8s. How fast does it travel? Answer in cm/s
asked by ashley 
Business Math
Answer the questions below in 2 paragraphs 1. Discuss your options for obtaining a home loan and how mortgages work. 2. Discuss the process/procedures for obtaining the loan and the ideal interest rates for home loans. Due ASAP!!!
asked by Ms Jenny 
physics
A 990 kg car is pulling a 300 kg trailer. Together, the car and trailer have an acceleration of 2.13 m/s2 in the forward direction. Neglecting frictional forces on the trailer, determine the following (including sign). (a) the net force on the car (b) the
asked by Sarah 
biology
name the gas transporting protein molecule present in the blood ? why this molecule is employed to transport oxygen but not carbondioxide.
asked by priya 
History
What do you think is the most significant thing to learn about the differences between social, political and economic systems in the world?
asked by Kelly 
Physics 2
Suppose, in the figure below, a 0.90m rod experiences a 1.2T magnetic field and the hand keeps it moving to the right at a constant speed of 3.5 m/s. If the current in the circuit is 0.040 A, what is the average power being delivered to the circuit by
asked by June 
statistics
A random sample of 51 of the largest companies in the united states gave the following P/e ratios 11 35 19 13 15 21 40 18 60 72 9 20 29 53 16 26 21 14 21 27 10 12 47 14 33 14 18 17 20 19 13 25 23 27 5 16 8 49 44 20 27 8 19 12 31 67 51 26 19 18 32 Use a
asked by Anonymous 
English
Would Aunt Alexandra (To Kill a Mockingbird) tell Atticus he needs to choose between being a Finch and being one of them? Would Aunt Alexandra believe that because of the Tom Robinson case the Finches are being though of as badly as the Ewells?
asked by Em 
algebra
whats the fastest and most easiest way to find all the subsets in a given set?
asked by Peter 
com 156
I need someone to read over this and tell me if it sounds ok. It is supose to be a persuasive essay Why Americans should not count on Social Security for retirement. Even though Social Security may always have enough funds to support itself, Americans need
asked by Debbie 
Soviet UnionUSCold War
What's the significance of the relationships of the Soviet Union and the United States to developing countries during the Cold War. How do you think it relates to conditions today?
asked by KELL 
Economics
Which tax is usually the most regressive ?
asked by Katina 
IT Fundmentals of Programming w/ Algoriths & Logic
How would I write an objectoriented pseudocode for a system that allows a user to enter their name into a text box? When they press the Go button a message will be displayed in a label that says “Hello” and their name.
asked by Ray 
social studies
What political dangers did President Lincoln face when he issued the Emancipation Proclamation..I don't think Damon was able to help me or I'm looking at the question the wrong way ?Need your input on this Ms.Sue....Thank You
asked by Joanne 
english
i need to unscramble ahootnerr.
asked by aaron 
statistics
For a population of μ = 70 and σ = 20, find the zscore and percentile rank for each of the following X scores: 80, 100, 65, 40.
asked by julide smith 
physics
Determine the vertical component of a baseball's velocity if the ball is thrown at 28 m/sec at an angle of 37 degrees with the horizontal. The answer is 21.2 m/sec but I have no clue on how to solve this problem.
asked by confused 
physics
A car that weighs 15,000 N is initially moving at 60km/hr when the brakes are applied. The car is brought to a stop in 30m. Assuming the force applied by the brakes is constant, determine the magnitude of the braking force.
asked by Dale 
maths
The mean weight (1.0042kg) of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be
asked by ben 
history
Describe how influential the Cold War has been on the world of today.
asked by dan 
physics
A student wanted to drive from Austin to san Antonio ,80 mi south of Austin on highway I35. Unfortunately he entered in the wrong direction and drove to waco100 miles north of Austin –before he noticed his error. In waco ,he turned around,drove back to
asked by ashley 
econ
What is the lowest value of economic profit that the firm must earn if it is to keep its resources in the current industry?
asked by Anonymous 
Algebra
4(73x)=7(42x) x=
asked by Jon 
algebra
12(x6)=2(x9) x equals?
asked by Anne 
Math
3(x2)+4(2x6)=6(x4)+8(2x+1)x=
asked by Tom 
Math
7(x2)+3(x+2)=5(x6) x=?
asked by Jonah 
Algebra
4(7x1)=3(2x+1)4(x+6) x=?
asked by Sari 
business communication
Which alternative indicates the message(s), if any, which can spend considerable time discussing negative aspects of a situation? (Points: 5) Direct requests Persuasive problemsolving messages Sales messages Clearance messages
asked by Anonymous 
economics
Does anybody know what factors I can research that result in economic stratification? I can't find much from google, don't know what to look up.
asked by Marky 
social studies
What political dangers did President Lincoln face when he issued the Emancipation Proclamation ?
asked by Joanne 
English
1. He still felt fun about the show to watch the dynamic movements of the dancers. 2. He still felt funny about the show to watch the dynamic movements of the dancers. 3. He still felt fun to watch the dynamic movements of the dancers about the show. (Are
asked by rfvv 
HistoryCivil War
What political dangers did President Lincoln face when he issued the Emancipation Proclamation ?
asked by Joanne 
English
1. The fish I ate upset me. 2. The fish I had eaten upset me. (One more similar question, please. Are both OK? Because of the tense, #2 seems to be better. What about #1? Are both OK? Is there any difference between them?) 3.I had finished the work before
asked by rfvv 
physics
Assuming that 68.1% of the Earth's surface is covered with water at average depth of 1.21 mi. ,estimate the mass of the water on Earth. One mile is 1.609 km and the radius of the earth is 6.37 x 10^6 m. Answer in units of kg
asked by ashley 
physics
Two ants race across a table 70 cm long. One travels at 5.7 cm/s and the other at 3.99999 cm/s. When the first one crosses the finish line,how far behind is the second one? Answer in units of cm
asked by ashley 
physics
A man jogs at a spee of 1.1 m/s. His dog waits 1.6s and then takes off running at a speed of 3.8 m/s to catch up with the man. How far will they each have traveled when the dog catches up with the man?Answer in units of m
asked by ashley 
physics
The average speed of an orbiting space shuttle is 20100 mi/h. The shuttle is orbiting about 196 mi above the Earth’s surface. Assume the Earth’s radius is 3963 mi. How long does it take to circle the Earth? Answer in units of h ( hours)
asked by ashley 
Statistics
A random sample of 51 of the largest companies in the united states gave the following P/e ratios 11 35 19 13 15 21 40 18 60 72 9 20 29 53 16 26 21 14 21 27 10 12 47 14 33 14 18 17 20 19 13 25 23 27 5 16 8 49 44 20 27 8 19 12 31 67 51 26 19 18 32 Use a
asked by Anonymous 
Statistics
A random sample of 51 of the largest companies in the united states gave the following P/e ratios 11 35 19 13 15 21 40 18 60 72 9 20 29 53 16 26 21 14 21 27 10 12 47 14 33 14 18 17 20 19 13 25 23 27 5 16 8 49 44 20 27 8 19 12 31 67 51 26 19 18 32 Use a
asked by Anonymous 
“Charlie would like to pack one less outfit than J
“Charlie would like to pack one less outfit than Jane for their trip. Loretta would like to bring five outfits less than twice what Jane packs. Due to space in the suitcase, they are limited to a total of 24 outfits. How many outfits can they each
asked by Anonymous 
Translate the following situation into an inequali
“Charlie would like to pack one less outfit than Jane for their trip. Loretta would like to bring five outfits less than twice what Jane packs. Due to space in the suitcase, they are limited to a total of 24 outfits. How many outfits can they each
asked by Anonymous 
Essay writing
how to narrow down a topic about the Egyptian Revolution of 25 January for an argumentative essay??
asked by Mai 
History
What were the various changes that had taken place in Europe at the beginning of the middle ages ? What were the main characteristics of the middle ages in Europe?
asked by Abhishek 
Math
I need help with math and I cant understand it
asked by Randa 
Life Orientation
What are the environmental or human factor that causes,accidents,crises or disasters which impacts negatively on people's health?
asked by Khotso 
Maths
Sherpa invests $10,000 in a saving account which pays a compound interest at R% per year if the total interest earned in 2years is $400, find the value of R.
asked by Smartypants 
trig
if alpha and beta are 2 different values of θ lying between 0 and 2π which satisfy the equation 6cosθ+8 sinθ=9 find the value of sin alpha + beta
asked by usha 
literacy
highly repetitive and simplified mother talk is
asked by torrey 
english
please,help me find mistake in the following sentence she is very hardworking so not very imaginative
asked by ahmed 
geometry
If you make a glass in the shape of a right circular cone (think martini glass) how wide would the glass be if it is 4 inches tall and again holds 12 oz. Round to 2 decimal places. (The width is the circumference). (does not specify what 12oz are)
asked by sharon 
Trig
URGENT, Please answer this question: give the value of: Tan(Arctan x+1/x1+Arctan x1/x)
asked by Mike 
trignometry
if alpha and beta are 2 different values of θ lying between 0 and 2π which satisfy the equation 6cosθ+8 sinθ=9 find the value of sin alpha + beta.i want the answer by quadratic method. can u help solving sum by that method
asked by usha 
derivative
29) Find the derivative of the function. F(X)=2x^2(34x)^2 This is what I have so far. I am usually pretty good at simplifying but I am missing something here. f'(x)=2x^2(4)(34x)^3(4) + (34x)^4(4x) Here is where I go wrong. (Answer from book)
asked by Steff 
bio
Explain how genetic diversity in plants and animals supports longterm viability.
asked by mark 
Math
Hi all, hope someone could help me. I'm trying to find domain, range and asymptotes for the following functions. f(x) = 5  e^(x1) g(x) = ln(5  y) + 1
asked by Dantes 
Chemistry
What volume of water would be required to dissolve 1 g of BaF2? mass of BaF2 is 1.31 g and it dissolves in 1 L of water. The answer is 0.763. Can someone please explain how they got this?
asked by Kev 
trigonometry...........
Prove the following identity: (i) tan^3x/1+tan^2x + cot^3x/1+cot^2 = 12sin^x cos^x/sinx cosx
asked by MATHS 
question (doubt)....
solve to find x and y: x^3+8y^3+x+2y=0
asked by MATHS 
averages
if you had the nos 3,19,20,37,48 out of 50 on another draw what. Would the results of another draw be
asked by tanya 
accounting
How do you prepare the following adjusting, reversing and next period entry into an unadjusted trial balance? I also need help with the rest of this problem. Cost of supplies still available December 31 is 2,700 The notes payable requires an interest
asked by shawna 
Math
I have to make two equations with the two integers {9, 3} and {2, 4}. The equations have to be done by the additon/ subtraction method and they have to become the solutions to a system, however, I do not know how to do that. Please help.
asked by Tangie 
COLD WAR
What are some of the reasons the Cold War ended and do you think there is any way this long period of history could have been avoided?
asked by KELL 
Geometry
Find the coordinates of the midpoint of the segment whose endpoints are (9,3) and (1,9).
asked by LongDivision 
Geometry
If /_1 and /_2 are complementary angles, and m /_1=5x9 and m/_2=4x, find the measure of the two angles.
asked by LongDivision 
Trig
Find the amplitude, period, and phase shift of the following function: y=2cos2(θ+45)
asked by Tianna 
Chemistry
Determine the energy in K calories needed to convert a one pound block of ice to steam
asked by Carolyn 
Biology
How could a farmer tell whether his tomatoes are pure red or heterozygous?
asked by Bryan