Questions Asked on
June 18, 2015

PHYSICS
27. Using energy considerations and assuming negligible air resistance, show that a rock thrown from a bridge 20.0 m above water with an initial speed of 15.0 m/s strikes the water with a speed of 24.8 m/s independent of the direction thrown.
asked by GILL 
Chrmistry
Aqueous potassium phosphate was mixed with aqueous magnesium chloride, and a crystallized magnesium phosphate product was formed. Consider the other product and its phase, and then write the balanced molecular equation for this precipitation reaction
asked by Beverly 
Chemistry
Ethanol is the active ingredient of alcoholic beverages. It is also s a possible replacement for gasoline. The complete combustion of ethanol forms carbon dioxide and water. CH3CH2OH + O2 => CO2 + H2O Balance the equation. What mass of carbon dioxide is
asked by Priscilla 
PreChem
Classify each of the reactions. precipitation, acidbase neutralization, redox C2H4(g)+3O2(g)> 2CO2(g)+2H2O(l) Cu(s)+FeCl2(aq)>Fe(s)+CuCl2(aq) HI(aq)+LiOH(aq)>H2O(l)+LiI(aq)
asked by Noah 
science
this is bio what would happen to the forest environnment if the lynx started being hunted for their skins?
asked by Stoof 
Algebra
Find all complex numbers $z$ such that \[ z^22\bar z+iz=2i. \]
asked by XXX 
physics
In the following situations identify the agent exerting the force and the object on which it acts .State the effect and kind of force in each case. a>Falling of rain drops. b>A horse pulling a cart. c>A car coming to rest once its engine is switched off.
asked by deepti 
Statistics
A researcher conducts a test on the effectiveness of a cholesterol treatment on 114 total subjects. Assuming the tails of distributions are normal distribution, is there evidence that the treatment is effective? What is the Null and alternative hypothesis.
asked by James 
Calculus
A 0.9 ml dose of a drug is injected into a patient steadily for half a second. At the end of this time, the quantity, Q, of the drug in the body starts to decay exponentially at a continuous rate of 0.4% per second. Using formulas, express Q as a
asked by Devon 
Public speaking
Saying "gonna" instead of "going to" is an issue of: A. Body movement B. Eye contact C. Articulation D. Timing
asked by Alex 
Math Trigonometry
A man is 6 ft. tall casts a shadow of 8 ft. find the angle of elevation of the sun.
asked by Shelou 
Geography
Describe service delivery protest in your community or neighbourhood about one page
asked by Tumelo 
appliances
What is the purpose of the external jumper wire on a variablespeed reversing drill switch
asked by Lock 
Math (PLEASE HELP!)
1. The UV index on a sunny day can be modelled by the function y= 0.15(x13)^2+7.6 , where x represents the time of day on a 24h clock and f(x) represents the UV index. At what time(s) was the UV index 7? 2. Determine if each system has one, two, or no
asked by Adam 
geometry
box of cereal measures 10 in .wide.12in . high, 3in deep .all surfaces made of cardboard and total overlapping cardboard in the box is 7in squared , how much cardboard is used to make a cereal box including the amount of overlapping parts ?
asked by nunu 
Criminal Justice
Social Darwinism: A. explains corporate crime. B. is associated with Jacques Rousseau. C. supports aid to the disadvantaged. D. has as its credo the phrase "survival of the fittest." According to my book a,b,c are wrong. And answer D im not sure i don't
asked by Amy 
Math Geometry
The sun rises at 6am; At noon the sun is directly overhead. The height of a pole is 8m tall. What is the length of the shadow at 11am?
asked by Seany 
saraswathi vidyalaya
find all the zeroes of 2x4  9x3 + 5x2 + 3x1 if two of its zeroes are 2+root3 and 2root3
asked by paru 
maths
Two men and six boys can cut a field in 3hours. If the men work at 3/2 times that of the boys, how many men are required to cut the field in 2hrs.
asked by jay 
Narayana
A triangle whose sides ABC a line Ap drawn to the side BC such that ap is not a median or altetude?
asked by Dheeraj 
ncedo senior secondary school economics
Detailed explanation with graphs of how the price of milk would have been determined in the absence of government involvement in the market
asked by sanelisiwe dyasi 
algebra
Alice puts money into two accounts, one with 2% annual interest and another with 3% annual interest. She invests 3 times as much in the higher yielding account as she does in the lower yielding account. If her total interest for the year is $27.50, how
asked by t 
math
Last month, Bill's electric bill was $80.77. This month, Bill's bill was $69.06. What is the percent decrease? 0.01 0.16 0.15 0.14 my answer is 0.15
asked by Lucy 
math
Two men and six boys can cut a field in 3 hours. If the men work at 3/2 times that of the boys, how many men are required to cut the field in 2hours?
asked by jay 
Biology  repost
(To whoever posted the first time  DO NOT use any tutor's name where YOUR name should be. Impersonation of a tutor is not allowed on this website.) What are the biological terms of the following? 1.Reproductive structure in breadmould 2.acquired immunity
asked by Writeacher 
Algebra 2
I'm confused on how to do this. 1.) Show that f(x)=x^4 2x +8 has nonzero constant fourthorder differences. SIMPLIFY THE EXPRESSION: (HOW?) 2.) 8^log(8)^x eight log root 8 ^x (here it is written if you can't understand the actual expression. It is
asked by Jake 
english
A prepositional phrase modifies a word and relates that word to the preposition's _____.
asked by jacob 
Math (PLEASE HELP!)
1. The sum of the squares of two numbers is 74 and the difference of their squares is 24. a) What system of equations models this situation? b) What are the two numbers? 2. For what value of b will the line y= 2x+b be tangent to the parabola y=3x^2+4x1?
asked by Anthony 
Math (Need help Urgent)
1. Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the crosssection of the slope of one side of the hill is y=4x12 . If the path of the
asked by Mary 
Physics
A typical tumor treated with radiotherapy may receive 400 Gy per 250g. How many disintegrations of caesium137 atoms are required to provide that absorbed dose? Help would be appreciated!
asked by Please help! 
English
1. short winter coat 2. long winter coat 3. medium winter coat 4. longsleeved shirt 5. shortsleeved shirt 6. mediumsleeved shirt ============== Are the expressions all used? Do we have some other expressions?
asked by rfvv 
Alpha
mr brown borrowed $5,340 from a bank at 10% aunnum simplr interest for 9 years. the sum of the money paid in interest to the bank and the total amount of money repaid to the bank
asked by megan 
Ethics
Traits of character that dispose a person to act in a moral fashion are typically referred to as:
asked by Anonymous 
UNIBEN Demonstration secondary school, benin city,Nigeria
how to calculate mole fraction
asked by david 
Canadian History
Do you know what the roots of early animosity leading to the cold war is? Plz
asked by Ryleigh YO 
improving writing
I have written two paragraph about the problem and solution plz tell me is it ok if any grammatical mistake or punctuation error is then plz tell me. the content of this paragraph meets the desired topic as per the exam requirements. plz, guide . below is
asked by yogita 
Math (PLEASE HELP!)
1. Solve the system of equations by elimination.y=2x^22x3 and y=x^22x3 2.The system of equations y=5(x+4)^24 and y=8x^2+64x+124 has _____ solution(s). 3. Determine the value of k in y=kx^25x+2 that will result in the intersection of the line
asked by Kaitlin 
Maths
A hand fan is made by stitching 6 equal size triangular strips of two different types. The dimensions of equal strips are 25cm, 25 cm and 14 cm.Find the area of each type of paper needed to make the hand fan.
asked by Neha 
B. My gange girls sen sec school (science)
A hot plate of an electric oven connected to a 220V line has two resistance coils A and B, each of 24 ohms resistance, which may be used separately, in series, or in parallel. What are the currents in the cases?
asked by Radhika 
biology help
Describe the hormeostatic control that occurs in the body of a normal person to increase blood glucose level when they are low
asked by promice 
psy410
parkinson's disease huntingtons disease and alzheimers disease are all types of major neurocognitive disorder
asked by Anonymous 
Chemistry
PLS HELP ME(1)Write a balanced equation in each case dilute hydrochloric reacts with[i]ZnCO3[ii]CuCO3 (2)Discuss how hydrocarbons contribute to the formation of ozone in the atmosphere.I'M CONFUSED I NEED HELP!
asked by Anonymous 
psychology
The biosocial approach suggests that gender differences are based on: a. the hormone and neurological differences between men and women. b. how men and women think about their environment. c. the physical ability of men to protect the home and of women to
asked by Lucy 
chemistry
A sample of gas has an initial volume of 20.9 L at a pressure of 1.4 atm If the sample is compressed to a volume of 12.9 L: , what will its pressure be? (Assume constant temperature.) Thank you
asked by ap 
Language Arts
Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. While being an extra on a movie set may seem fun and
asked by Ethan 
English
I'm looking for a pair of gloves. 1. Are they for you? 2. Is it for you? ======================== Which response is right?
asked by rfvv 
English
1. This is a longsleeved shirt. 2. This is a longsleeved shirt. 3. This is a longsleeve shirt. 4. This is a longsleeve shirt. =================== Which ones are grammatical?
asked by rfvv 
physics
A student of weight 810 N was sent to another planet called Nerdland. If Nerdland has a mass that is 4 X the mass of the earth and a radius that is 1/2 the radius of the earth, what would be the mass in kg of the student when on Nerdland? what would be the
asked by Anonymous 
Chemistry
(1)Write a balanced equation in each case dilute htdrochloric reacts with[i]ZnCO3[ii]CuCO3 (2)Discuss how hydrocarbons contribute to the formation of ozone in the atmosphere
asked by Tazannia Tennyson 
statistics
P( 1.05 < Z < 2.05) Need help solving please
asked by belle 
math
A fisherman has estimated that it takes 6 minutes to paint each square foot of the hull of his boat. How much time should the fisherman allow for the painting of the hull, if the hull were composed of two sides, each 31.5 feet by 8.00 feet? 1512.0 hours
asked by Lucy 
math
can someone elxplai to me how to solve this differential equation. dy/dx= (x^2+3y^2)/2xy
asked by Anonymous 
Languarge Arts
Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. When it looked like all hope was lost for winning the
asked by Ethan 
English
Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. The group of friends _________ around the coffee shop
asked by Ethan 
Language Arts
Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. The fact that the lottery winner flaunted his newly
asked by Ethan 
LA
Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. While most people in Los Angeles will go to a Dodger's
asked by Ethan 
System of Equation
___________ involves isolating the variable in one equation and replacing the same variable in the other equation with this expression.
asked by Amber 
finance1
the Herandez family is facing some financial pressure with a combination of 66000 dollars of income.
asked by tee 
English
Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. While most museum visitors displayed respect for the
asked by Ethan 
English
Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. 1. When it looked like all hope was lost for winning
asked by Ethan 
Maths
Bobbt jannet made jam from 8kg strawberries and 4 kg sugar, how much did it cost to make 1kg of jam if 1kg of strawberries cost 6.50 and 1 kg of sugar cost 2.10?
asked by Nicold 
English
I'm looking for a shirt for my dad. =============================== Does 'for my dad' modify 'shirt' or 'looking'? Is 'for my dad' an adjective phrase or an adverbial phrase?
asked by rfvv 
math
round off the following to nearest 10000 1,82,937
asked by akhila 
algebra
Shoe O Rama is having a 20 % off sale this friday. Which equation below shows how to find the sale price, s, as a function of the original price, p?
asked by Marc 
Crestwood
A bag contains 3 yellow, 4 white, and 8 blue marbles. How many samples of 2 marbles are possible?
asked by Libby 
psy 410
Which of the following is NOT usually one of the effects of abuse on a child?
asked by gail 
Math (PLEASE HELP!)
1. Suppose the height, h, in feet, of a trampolinist above the ground during one bounce is modelled by the quadratic function h(t) = 16t2 + 42t + 3.75 . For what period of time is the trampolinist at least 22 ft above the ground? Round your answers to the
asked by Ashley 
Math (Need help Urgent)
1. Graph the solution to the inequality y ≤ 2(x  2)2  2 ?
asked by Bailey 
physics
A body is projected at an angle of 30degree to the horizontal with a velocity of 150metre per seconds.Calculate the time it takes to reach the greatest height,take g=10metre per seconds square and neglect air resistance.
asked by scott 
stats
A sample has a mean of M = 73 and a standard deviation of s = 5
asked by dj 
Math
the ratio of Simone's pocket money to Fiona's pocket money was 2:3. After Fiona had received $5 from her mother, the ratio of Simone's pocket money to Fiona's pocket money became 4:7. how much pocket money did both of them have at first?
asked by Minhthaominh 
medical
For this assignment, I have to diagnose a list of patients. 1. 14 year old female feels a tightness in her chest when she gets nervous. Also, she starts wheezing when she exercises while being nervous as well as feels a sharp pain in stomach region. I
asked by Ashley 
math
My digits are 6,0, and 5. I'm not divisible by 5. What number am I
asked by CJ