Questions Asked on
April 25, 2013

Physics
The lowest frequency in the audible range is 20Hz. A)What is the length of the shortest openopen tube needed to produce this frequency? B)What is the length of the shortest openclosed tube needed to produce this frequency?
asked by Zach Neal 
Chemistry
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.140 M HClO(aq) with 0.140 M KOH(aq).HClO is a weak acid with a Ka of 4.0× 10–8. It reacts with strong base to produce ClO–. (e) after addition of 60.0 mL of KOH
asked by Emma 
chemistry
the amount of K2Cr2O7 required to prepare 100ml of its 0.05N solution
asked by saba anjum 
math help please ASAP
2. Identify the sequence as arithmetic, geometric, or neither. 1.6, 0.8, 0.4, 0.2, . . . (1 point) arithmetic geometric neither 3. 5 • 3^n (1 point) 15, 30, 45, 60 5, 15, 45, 135 0, 15, 45, 135 15, 45, 135, 405 4. Use the function rule ƒ(x) = n •
asked by Delilah 
chemistry
how many moles of gold are there in 1.00 L of seawater if there are 1.50^17 atoms of gold in the sample?
asked by Tina 
algebra 1
1) the width of a rectangle is 33 centimeters. the perimeter is at least 776 centimeters. write an inequality to find the length of the rectangle. a. 33+ L≤ 776 b. 33+L≥776 c. 2(33)+2L≤776 d. 2(33)+2L≥776 D
asked by hips 
spanish
12. Tell what the following people will do tomorrow by changing the verb in the following statement to the future tense. Write the new verb in the blank. Ellos van a la playa.
asked by Frank 
thermodynamics
A fluid moves in a steady flow manner between two sections ina flow line. At section 1: A1=10ft2, v1=100ft/min, specificvolume1= 4ft3/lb. At section 2: A2=2ft2, density 2= 0.20 lb/ft3.Calculate the mass flow rate and speed at section 2.
asked by olbap 
chemistry
A 45 g block of aluminum initially at 28.0° C absorbs 548 J of heat. What is the final temperature of the aluminum? The specific heat of aluminum is 0.902 J/g °C.
asked by University of Louisiana at Lafayette 
physics
Four charges are placed at the four corners of a square of side 15 cm.The charges on the upper left and right corners are +3 uC and 6 uC respectively. The charges on the lower left and right corners are 2.4uC and9 uC respectively. The net force on 6uC
asked by daryl 
science
Calculate the heat of combustion of candle wax in kJ/mole. The standard heat of formation (∆Hf ) of candle wax (C20H42) is 2230 kJ/mole. The standard heat of formation (∆Hf ) of carbon dioxide is 394 kJ/mole. The standard heat of formation (∆Hf )
asked by emma 
chemistry
At 25 °C only 0.0390 mol of the generic salt AB3 is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C?
asked by madeline 
chemistry
To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 16.0 g, and its initial temperature is 10.4 °C. The water resulting from the melted ice reaches the temperature of your skin, 28.3 °C. How much
asked by Audre 
algebra 1 help
3) the ideal width of a safety belt strap for a certain automobile is 5 cm. an actual width can vary by at most 0.35 cm. write an absolute value inequality for the range of acceptable widths. a. w+5≤ 0.35 b. w0.35 ≤ 5 c. w+0.35≤ 5 d.
asked by hips 
algebra 1 help please
4) a student score is 83 and 91 on her first two quizzes. write and solve a compound inequality to find possible values for a thord quiz score that would give anverage between 85 and 90. a. 85≤83+91+n/3 ≤90; 81≤n≤96 b. 85≤83+91/2+n≤90;
asked by hips 
CHEMPLEASE HELP
Calculate the molar solubility of silver chloride (AgCl) in: adeionized water and b.20M NaCl solution Given Ksp=1.6*10^10
asked by JO 
math
a potato chip manufacturer has been accused of shortchanging their customers with 10 ouce of bags potato chips. a sample of 50 of that company's 10 ounce bags was take, and it was found that the average weight was 9.8 ounces with a standard deviation of
asked by kiki 
Financial Accounting 1
Maximus Dog Company purchased a new supply van on January 1, 2011, for $35,000. The van is estimated to last for five years and will then be sold, at which time it should be worth approximately $5,000. The company uses straight line depreciation and has a
asked by Anonymous 
Physics
A hotair balloon is rising upwards at a constant velocity of 5m.s . When the balloon is 100m above the ground , a sandbag is dropped from it. Will the velocity of the hotair balloon increase , decrease or remain the same immediately after the sandbag has
asked by Lesiba 
Investments
At the end of each year a selfemployed person deposits $1,500 in a retirement account that earns 10 percent annually. a) How much will be in the account when the individual retired at the age of 65 if the contribution start when the person is 45 years
asked by carolyn 
Math
A lot is in the shape of a trapezoid. The sum of the bases is 180 feet. If the area of the lot is 8,100 square feet, what is the distance across the lot, i.e. the altitude of the figure? The altitude of the trapezoid is __ feet.
asked by Joe 
math hw (algebra)
On the sidewalk the distance from the dormitory to the cafeteria is 400 meters. By cutting across the lawn, the walking distance is shortened to 300 meters. how long is each part of the L shaped sidewalk?
asked by danielle 
Physics
A certain type of laser emits light that has a frequency of 4.7 1014 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 2.8 1011 s. (a) How many wavelengths are there in one pulse? (b) The light enters a pool of water.
asked by Anonymous 
Chemistry
Ethanol (C2H5OH) has been produced since antiquity by the fermentation of fruits and vegetables. Given the following data, if 5.87 kJ of energy are transferred to 13.3 g of frozen ethanol at 130.0 °C, what is the final temperature of the sample? Heat
asked by Johnny 
math
a student drop a rubber ball from a height of 8 feet . Each time the ball hits the ground, it bounces to 75% of its previous height. a/ how far does the ball travel between tne second and third bounces . b/ write an infinite series to model the total
asked by long nguyen 
Calc
A video games shop is analyzing its sales performance using matrices. Matrix A contains the unit sales data for each product category (horizontally) per week (vertically). Matrix B contains the unit sales data for weekends for each category (horizontally)
asked by Chris 
calculus
A paper cone is to be formed by starting with a disk of radius 9cm, cutting out a circular sector, and gluing the new edges together. The size of the circular sector is chosen to maximize the volume of the resulting cone. How tall is the cone?
asked by lisa 
physics
At the instant a race began, a 74.0 kg sprinter exerted a force of 850 N on the starting block at a 23.0 degree angle with respect to the ground. what was the horizontal acceleration of the sprinter?
asked by naja 
Financial Accounting
E330A. Account for depreciation expense. (LO 1, 3). Maximus Dog Company purchased a new supply van on January 1, 2011, for $35,000. The van is estimated to last for five years and will then be sold, at which time it should be worth approximately $5,000.
asked by Anonymous 
physics
A heat engine absorbs 848 J of energy per cycle from a hightemperature source. The engine does 417 J of work during each cycle, expelling 431 J as heat. What is the engine’s eﬃciency?
asked by Anonymous 
language arts Ms. Sue please
1. Which of the following is an example of metaphor? (1 point) an overwhelming wave of embarrassment as harmless as a newborn chick a hissing and slithering snake 2. When writing a poem, sensory details are used to (1 point) compare two unlike things or
asked by Delilah 
physics
For the following three vectors, what is 3C·(2A multiplied by Bvec)? A = 2.00ihat + 3.00jhat  6.00khat Bvec = 3.00ihat + 3.00jhat + 2.00khat C = 9.00ihat  8.00jhat
asked by tae 
Chemistry
Lithium metal is a highly reactive metal that oxidizes instantly in water or air. Given the data below, calculate the energy required to heat 10.0 g of Li from 150.0 °C to 200.0 °C. Molar heat capacity (solid) = 3.58 J/°C • mol Molar heat capacity
asked by Johnny 
Math
I can't remember how to do simplifying algebraic expressions can anyone help me?
asked by Ashley 
EnglishRoom 101 speech
PLEASE REPLY ON MY OTHER QUESTION BELOW. MY HOMEWORK IS DUE IN TOMMMORW. I FORGOT TO MENTION THAT I STILL HELP ON MY LAST IDEA!!!
asked by HS 
Physics
An object of mass 20kg slides down an inclined plane at an angle of 30 degree to the horizontal. The coefficient of static friction is?
asked by Sbjjayo 
Solid mensuration
The bases of a triangular right prism are apart. find the volume and the total surface area of the prism if one side of the quilateral triangular base measures 6cm
asked by Allen 
Math
A gardener is installing a circular garden. The radius of the circle 28 feet. He needs to know the circumference in order to buy materials for the edging. What is the circumference if he uses = . The circumference is __ feet
asked by Joe 
Calc
In the first three days of its launch, the Galaxy Music Store sold 14 CDs of album x, 8 of album y, and 6 of album z through Branch A. Through Branch B, the store sold 7 CDs of album x, 13 of album y, and 4 of album z. Branch C sold 2 CDs of album x, 11 of
asked by Chris 
algebra 1
the french club is sponsering a bake sale. they spent $77 in supplies. if their goal is to raise at least $140 how many pastries must they sell at $3.50 each in order to meet the goal. write and solve an inequality. a. 140p77≥ 3.50;p≥ 0.5 b.
asked by hips 
Science Check answer
******I WILL GIVE MY ANSWERS AFTER I POST THE QUESTIONS****** 1. Momentum is a measure of ____. how hard it is to stop an object the amount of matter in an object the tendency of an object to change its motion the amount of force acting on an object Use
asked by Jman 
Statistics
To test H0: = 80 versus H1: < 80. a simple random sample of size n = 22 is obtained from a population that is known to be normally distributed. a) If ¯x = 76.9 and s = 8.5, compute the test statistic.
asked by Ted 
English
Choose which sentence is correctly punctuated. A."What kind of fruit," asked Betsy, "bears its seed on the outside"? B."What kind of fruit," asked Betsy, "bears its seed on the outside?" Ithink it is A...?
asked by Cassie 
Calculus
A company manufactures widgets. The daily marginal cost to produce x widgets is found to be C'(x) = 0.000009x^2  0.009x + 8 (measured in dollars per unit). The daily fixed costs are found to be $120. a. Use this information to get a general cost function
asked by Roland 
German
Decide if the following sentence is grammatically CORRECT or INCORRECT. Er musste gesungen. incorrect correct
asked by bubbie 
chemistry
A compound was found to be composed of the following amounts of elements: 20.00% wt% C, 26.64wt% O, 46.65 wt%N, and 6.71wt%H. A 6.125 grams sample of this compound dissolved in 46.205 grams of water as a solution was found to have a freezing point of
asked by lucy 
Chemistry
Calculate the H3O concentration if 100.0 ml of the .10M HNO3 solution is diluted to 1.0L with water?
asked by Kim 
EnglishRoom 101 speech
I have to come up with a speech about what I feel should go into room 101. Room 101 is a british tv programme, which came from a book. It's basically when people give reasons of what they don't like. The presenter decides, what goes into room 101. I am
asked by HS 
physics
What is the centripetal force of an object undergoing uniform circular motion when its radius is doubled and its speed remains constant?
asked by Anonymous 
Physics
In grandpa’s time automobiles were previously manufactured to be as rigid as possible, whereas autos are now designed to crumple upon impact. Why? Please help; Thank you in advance for the help...
asked by Chris 
calculus
A paper cone is to be formed by starting with a disk of radius 9cm, cutting out a circular sector, and gluing the new edges together. The size of the circular sector is chosen to maximize the volume of the resulting cone. How tall is the cone?
asked by lisa 
physics
The magnetic force on a straight 0.36 m segment of wire carrying a current of 4.5 A is 0.38 N. What is the magnitude of the component of the magnetic ﬁeld that is perpendicular to the wire? Answer in units of T
asked by Anonymous 
geometry
you plan to carpet 468ft of space. carpet costs $26.75 per square yard and the tax is 7%. the carpet is sold in 12 ft rolls. what is the cost of the carpet?
asked by ALICE 
Physics
When a cannon with a longer barrel is fired, the force of expanding gases acts on the cannonball for a longer distance. What effect does this have on the velocity of the emerging cannonball? (Do you see why longrange cannons have such long barrels?)
asked by Chris 
Physics
Suppose that a police car on the highway is moving to the right at 27 m/s, while a speeder is coming up from almost directly behind at a speed of 35 m/s, both speeds being with respect to the ground. The police officer aims a radar gun at the speeder.
asked by Anonymous 
Probabilities
Bibi wants to send invitations to some of her friends to come to her birthday party. She has contact information for 37 friends stored on her phone, but she only wants to invite 21 of those people to her party. She tries to send out a message to the 21
asked by Andy 
chemisrty
A 21.00 sample of 0.3254M Hcl solution requires 26.09 ml of NaOH solution for complete neutralization. Calculate the volume of NaOH solution in liters, required for the titration.
asked by ashley 
English
Word bank beacon berserk celestial chasten confiscate data detract encounter epic pantomime pessimist precaution prosecute puncture retaliate sham uncouth underscore wholesome wistful 1.The police have done their job in arresting the suspect; now it is up
asked by Jerald 
ChemPLEASE HELP 911
Balance the following redox reaction and identify the oxidizing and reducing agents A Fe2+(aq) + Cr2072(aq) >Fe3+(aq) + Cr3+(aq) (acidic) B N2H4(g) + ClO3(aq) >NO2(g) + Cl (basic)
asked by JO 
Child development
Eva play near other children with similr material but doesn't try to influence their behavior , she 's involved in A. nonsocial B. Associative play c. parallel play d. cooperative
asked by Alston 
Math
Can anyone help me on simplifying algebraic expressions like this one 7(7+5f)+(f+6)10 It has been a while since I learned this so I don't remember this
asked by Anonymous 
Chemistry
Ntype silicon (Si) has been produced by doping with phosphorus (P). The chargecarrier population based on electrical conductivity measurments is determined to be 3.091*10^17 carriers/cm3 at room temperature. 1. Calculate the doping level of P (how much P
asked by Alan 
Physics
An electron in the c level of a mercury atom returns to the ground state. Which photon energy could not be emitted by the atom during this process?
asked by Shannon 
Chemistry
What concentration of SO32– is in equilibrium with Ag2SO3(s) and 3.60 × 103 M Ag ? The Ksp is 8.46×10–12.
asked by Alyssa 
Chemistry
What concentration of SO32– is in equilibrium with Ag2SO3(s) and 3.60 × 103 M Ag ? The Ksp is 8.46×10–12.
asked by Anonymous 
Physics
To combat wasteful habits, we often speak of “conserving energy,” by which we mean turning off lights, heating or cooling systems, and hot water when not being used. In this chapter, we also speak of “energy conservation.” Distinguish between these
asked by Chris 
Algebra
Predict value of x in table In 0,2,8,10,18 Out 5,11,29,x,59
asked by Sandra 
College Physics
The rectangular coils in a 201turn generator are 14 cm by 17 cm. What is the maximum emf produced by this generator when it rotates with an angular speed of 525 rpm in a magnetic field of 0.81 T? I'm not sure what equations to use.
asked by Valerie 
Solve the following polynomial equati
Solve the following polynomial equation for x : x^2  2( a+2)x + (a + 1)(a + 3).
asked by Bob 
math
Triangle XYZ with vertices X(3,1) Y(7,3)Z(3,5) undergoes an enlargement represented by the mapping: (x)(0.5 0)(x) +(3) (y)( 0 0.5)(y) +(4) Evaluate: 1. The vertices of the image of triangle XYZ. 2. The centre of enlargement PS. The small brackets
asked by lindsay 
Physics
A massless spring with spring constant 17.1 N/m hangs vertically. A body of mass 0.210 kg is attached to its free end and then released. Assume that the spring was unstretched before the body was released. What is the amplitude of the resulting motion?
asked by DL 
Chemistry
Balance the following redox reaction and identify the oxidizing and reducing agents A Fe2+(aq) + Cr2072(aq) >Fe3+(aq) + Cr3+(aq) (acidic) B N2H4(g) + ClO3(aq) >NO2(g) + Cl (basic)
asked by jo 
chemistry
A 13.8 g piece of Zn metal was heated to 98.6 oC and then dropped in 45.6 g of water at 25.0 oC. Assuming that no heat is lost to the surroundings, determine the specific heat capacity of Zn if the final temperature of the water was 27.1 oC C=6461.39
asked by Chade 
physics
What is the angular momentum (in kilogrammeter^2/second) of a 500.0 g ball rotating on the end of a string in a circle of radius 1.54 m at an angular speed of 2.50 rad/s?
asked by BG 
Math
My home work asks "what is the five number summery of a datta set? How is it used to mAke a box plot?" But i frogot what a five number summery is please help.
asked by Magiemay 
English
Word box beacon berserk celestial chasten confiscate data detract encounter epic pantomime pessimist precaution prosecute puncture retaliate sham uncouth underscore wholesome wistful 13.So there I was with a(n) ___ in one of my rear tires, on a lonely
asked by Jerald 
English
1.The youth center that the charity organized was like a (precaution beacon) to many young people desperately needing help and guidance. precaution 2.The child gazed (wistfully wholesomely) at the shiny toys in the store window. wistfully 3.Is it right to
asked by Jerald 
English
13.The trouble with being a(n) (underscore pessimist) is that you are so taken up with what is going wrong that you are unaware of what is going right pessimist 14.It does not (prosecute detract) in the least from his reputation as a great player to say
asked by Jerald 
math
A rectangular plot is bounded at the back by a river. No fencing is needed along the river and there is to be an opening in front of about 24 meters. If the cost of fencing in front is $1500 per meter and the cost of fencing the sides is $1000 per meter,
asked by natasha 
us history
many settlers moved west in search of
asked by kwan 
Statistics
A school is running a raffle. There are 100 tickets, of which 3 are winners. You can assume that tickets are sold by drawing at random without replacement from the available tickets. Teacher X buys 10 raffle tickets, and so does Teacher Y. Find the chance
asked by XYZ 
Math
How do you find the length of the base of a triangle? My math problem is: The area of a triangle is 33.6 inches. If the height is 4 inches what is the length of the base? thank you
asked by John 
Chemistry
Calculate the concentration of bromocresol green (BG) indicator It says that Molar absorptivity = Absorbance at a wavelength/ concentration of BG indicator I am having trouble calculating the concentration of BG. Other info: Stock solution of BG = 80.0
asked by Catherine 
Physics
A massless spring with spring constant 17.1 N/m hangs vertically. A body of mass 0.210 kg is attached to its free end and then released. Assume that the spring was unstretched before the body was released. How far below the initial position does the body
asked by Anonymous 
Chemistry
A mass of a copper oxide weighed 10.00grams. The reaction was run and the amount of just copper obtained was 8.88grams. What is the empirical formula of the compound?
asked by Samantha 
Calculus
Find the limit as x approaches infinity of (lnx)^(1/x). This unit is on L'Hopital's rule. I know that the answer is 1, I just don't know how to get there. I tried taking the ln of everything so that you have ln(the whole limit) = limx>infinity
asked by Hannah 
math pre calc
at the pittsburch zoo, children ride a train for 25 cents, adults pay $1 and seniors pay .75. on a given day, 1400 passengers paid a total of $740 for the rides. there were 250 more children riders than adults and senior riders combined.find the nu,ber of
asked by JT 
physics
A proton moves perpendicularly to a magnetic ﬁeld that has a magnitude of 1.22×10−2 T. The charge on a proton is 1.60×10−19 C. What is the speed of the particle if the magnitude of the magnetic force on it is 4.79× 10−14N? Answer in units of m/s
asked by Anonymous 
Chemistry
A sample of molybdenum (Mo) is analyzed by xray diffraction using NiKα radiation. Calculate the value of the angle at which the lowestangle reflection is observed. Express your answer in degrees:
asked by Anonymous 
math
If 2p4p2r is what
asked by bukeka 
German (i need help quickly, please)
If a vowel changes in a verb when it is conjugated (e.g. a > ä, e > ie, etc.), what kind of verb is it? weak strong modal helping
asked by bubbie 
Physics
A particle with a charge of 31 µC moves with a speed of 62 m/s in the positive xdirection. The magnetic field in this region of space has a component of 0.50 T in the positive ydirection, and a component of 0.61 T in the positive zdirection. What is
asked by Valerie 
English
I have these words left beacon celestial detract precaution retaliate sham uncouth wholesome wistful 2.Though many people doubted that the new program would do any real good, I thought it was a very ___ development wholesome
asked by Jerald 
physics
two charges originally separated by 10cm are moved further apart untill the force between them has decreased by a factor of 10. How far apart are these charges?
asked by radiant 
Math
Five red cards numbered 1,2,3,4,5 and two black cards both numbered 5 are randomly ordered facedown into a pile. The cards are flipped over one at a time until either the sum of the numbers on the red cards is at least 10, or the sum of the numbers on the
asked by Zeneth 
Algebra
Simplify the expression: (w+5)^2 My answer: w^2+25
asked by Tara 
pharmacy informatics
can you give me 1 journal article that deals with pharmacoeconomics study?
asked by PLEASSSEEE HELP MEE 
math
Helen determined she walks about 1,800 steps per 4/5 of a mile. How many steps did she take if she walked 3 miles
asked by sese 
science
What is the molality of 5.4g of potassium chloride (KCl) dissolved in 250 g of water?
asked by Anonymous 
Chemistry
What concentration of SO32– is in equilibrium with Ag2SO3(s) and 3.60 × 103 M Ag ? The Ksp is 8.46×10–12.
asked by Anonymous 
English
Words left beacon celestial detract precaution retaliate sham uncouth wistful 17.Before we use the blowtorch in our industrial arts class we are required to take the ___ of wearing goggles precaution
asked by Jerald 
statistics
All deal with a random variable X that follows a normal probability distribution with mean equal to 37 and a standard deviation of 5. Compute P(X < 39) Compute P(X < 29 or X > 41) Compute P(X > 30) Find the 42nd percentile for this distribution.
asked by luke 
algebra 1 help
3) the ideal width of a safety belt strap for a certain automobile is 5 cm. an actual width can vary by at most 0.35 cm. write an absolute value inequality for the range of acceptable widths. a. w+5≤ 0.35 b. w0.35 ≤ 5 c. w+0.35≤ 5 d.
asked by hips 
Art
Does this sentence flow? Word does not like can be recognized says it sounds passive. The logo design is created for religious organizations for letterhead, advertising material, by which the organization can be recognized.
asked by Journey 
Life orientation
Identify human factor that causes ill health,accidents,crises and disaster within south africa
asked by Adolph 
College Physics
A speck of charged dust with a mass of 39mu g. is kept levitating by putting it in an electric field. If you must apply a field of 10 N/C to keep it suspended in midair, what is the charge on the speck of dust? Can someone please help soon? I got this
asked by Valerie 
help
Mexico's heartland region is dominated by
asked by ann petra 
Right angle trigonometry
A sailor sights both the bottom and top of a lighthouse that is 20 and m high and which stands on the edge of a cliff. The two angles of elevation are 3 and 42. To the nearest meter, how far is the boat from the cliff?
asked by Kayla 
physics
In one of Michelson's experiments, a beam from a revolving mirror traveled 12 km to a stationary mirror. How long a time interval elapsed before the beam returned to the mirror?
asked by tasha 
physical science
plan,design and condact an investigation to find out whether the amount of heat produced will depend on an increase on the concentration of HCl when HCl reacts with an excess Zn.
asked by kholofelo 
physics
A particle moves through an xyz coordinate system while a force acts on it. When the particle has the position vector vector r = (2.00 m)ihat  (3.00 m)jhat + (2.00 m)khat, the force is vector F = Fxihat + (7.00 N)jhat  (5.30 N)khat and the corresponding
asked by tae 
physics  stopping distance
when a driver brings a car to a stop by breaki.g as hard as possible the stopping can be regarded as the sum of reaction distance and breaking distance. tje following data are given, v1 m/s contains 10,20,30. reaction distance are 7.5, 15, 22.5. the
asked by gladys 
chemistry
Calculate the molar solubility of silver chloride (AgCl) in: adeionized water and b.20M NaCl solution Given Ksp=1.6*10^10 please show work.
asked by jo 
math (algebra)
An auto dealer wants to string a wire from the top of a pole to the ground and hang colorful pennants from it. The distance from the base of the pole to the point where the wire is attached to the ground is 3 times the height of the pole. If the wire is 63
asked by danielle 
Physics/Astronomy
A pulsar is a stellar object that emits light in short bursts. Suppose a pulsar with a speed of 0.975c approaches Earth, and a rocket with a speed of 0.999c heads toward the pulsar (both speeds measured in Earth’s frame of reference). If the pulsar emits
asked by Kim 
life orietation
Critically discuss 6 ways in which the envirinmental health hazard can impact negatively on one's health
asked by cynthia gabisile siluma 
MATH
If you flip a coin 9 times and get 9 heads the probability of getting a head on the next toss would be 1/2. Explain how it is 1/2.
asked by Angela 
Math
Write a situation that can be represented by 6n+4.
asked by Brooke 
life orientation
Provide recommendations on how to adress The topic that you identified in the previous question
asked by nandi 
Physics
A particle with a charge of 31 µC moves with a speed of 62 m/s in the positive xdirection. The magnetic field in this region of space has a component of 0.50 T in the positive ydirection, and a component of 0.61 T in the positive zdirection. What is
asked by Valerie 
english home language literature
What does the opening sentence imply about Gatsby's parties?
asked by Lee 
Analytical Chem.
You collected a water sample from your shower containing (3.2 mM Ca2+)+(1.1 Mm Mg2+). Express the hardness of water in terms of mg CaCO3/L. (FM for CaCO3+100.09) I have no idea how to do this problem. Can anyone show me a step by step on how to work
asked by Leisle 
please help geometry
you need to find the length of a broken automitive belt. the belt ran around 2 pulleys whose centers were 11 in apart. one of the pulleys is 4" dia. and the other is 6" dia. what is the totoal length of the belt needed to connect thr pulleys?
asked by ALICE 
geometry
the bore of an engine cyclinder is the diameter of the piston and the stroke is the distance that the piston will travel up the cyclinder wall. The displacement is the volume of space that the piston goes thru. If the piston is 3.97" in dia. and the stroke
asked by ALICE 
Math
If the probability of an event happening is 2/5, then the probability of the event not happening is 3/5? This is False. The answer is 1/3. Explain why the answer is 1/3
asked by joyce 
physics
an airplane taking off from a landing field has a run of 500m. Calculate the average acceleration in ft/s2.
asked by kima 
Physics
17. Potential due to a point charge: What is the electric potential 17.0 cm from a 3.50 μC point charge?
asked by Lex 
math
9 subtracted from 2 less than the product of 4 and 8
asked by khusbu thapa 
Math Algebra
Find a polynomial p(x) with real coefficients having the given zeros. 6,14, and 4+3i
asked by :D 
math pre calc
solve for X marticies 2 0 5 4 1 3 =2 6 x 7
asked by JT 
math
If the probability of an event happening is 2/5, then the probability of the event not happening is 3/5? This is False. The answer is 1/3. Explain why the answer is 1/3
asked by greg 
physics
Two identical superconducting rings are brought very close to each other (see the image below). The currents in the rings are equal to I,=0.05 A. Determine the the current I in Amps in the rings if we separate them far apart.
asked by er 
Physics
Why bother using a machine if it cannot multiply work input to achieve greater work output? Please help; need a original answer no Google search. Thank you in advance...
asked by Chris 
Math Algebra
Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function. 1. 9x^65x^42x^3+8x^24x=0 2. 9x^4+5x^32x^2+4x3=0
asked by :D 
Math
A building casts a shadow that is 8ft long. How tall is the building?
asked by Debra 
Physics
A park ranger wants to shoot a monkey hanging from a branch of a tree with a tranquilizing dart. The ranger aims directly at the monkey, not realizing that the dart will follow a parabolic path and thus will fall below the monkey. The monkey, however, sees
asked by Chris 
Science
What would the nucleus and the nucleolus on a farm be? and please explain why. thanks
asked by Mia URGENT! I AM DESPERATE 
Aerospace
In case you didn't already know VASTS has to do with aerospace and what not...this was one of the questions on our discussion forum....this is exactly what it says Rags, tie wraps, and safety wire are examples of ______ contamination? ....there was a
asked by red 
Math
Angela measured 2 trees in her front yard.Tree A is 5m. Tree B is 200 cm taller than tree A. How tall is tree B
asked by Lexi 
Calc
Which expression is equivalent to (sin x + 1)(sin x − 1)? A. cos2^x B. cos2^x C. cos2^x + 1 D. cos^2x − 1 E. cos^2x + 1
asked by Chris 
math
Triangle XYZ with vertices X(3,1) Y(7,3)Z(3,5) undergoes an enlargement represented by the mapping: x
asked by lindsay 
physics
If d1 = 7 ihat  2 jhat + 4 khat and d2 = 5 ihat + 2 jhat  khat, then what is (d1 + d2)·(d1 multiplied by 6 d2)?
asked by tae 
social studies
Why should slaves have less hours to work? REMEMBER THINK LIKE A PERSON FROM 1855!!
asked by Aleyshka 
Math
There is a mathematical relationship between an airplane’s weight x and the runway length required at takeoff. For certain types of airplanes, the minimum runway length L in thousands of feet may be modeled by L(x) = 1.3 ln x, where x is in thousands of
asked by Tamie 
math for Ms. Sue
The fifth grade marching band includes boys and girls. There are 28 boys in the marching band. The 28 boys are 7/10 of the students in the marching band. a. What fraction of the students n the marching band are girls? b. What is the total number of
asked by Anonymous 
Math
Tammy drew a scale drawing of a house. The scale she used was 14 millimeters = 5 meters. The actual length of the garage is 15 meters. How long is the garage in the drawing?
asked by Jasmine 
chemistry
a sample of argon gas at standard pressure ocupies 100ml. at constant temp, what volume does the gas occupy if the temp increases to 800mmHg
asked by Deveigh 
Science
I'm studding forces and motion what is the difference between velocity and speed.Thanks if you help:)
asked by Kim 
English
In 1m:15 line critically discuss 5 way in which the human or environmental problem impacts on the community about poverty in the community
asked by Anonymous 
algebra 1
a+82(a12)>0 do you do distributive property?
asked by hips 
physics
A 150 lb (68 kg) skier impacts a person who is standing at the bottom of the ski hill. If our skier began the descent at a height of 40 meters, how fast was our skier moving to the bottom of the hill?
asked by Anonymous 
Chemistry
Estimate the fraction of of unoccupied atomic sites in lead (Pb) at a temperature 10K below its melting point. DATA: Vacancy Fraction, nv/N T (degrees C) 1.8*10^7 100 7.2*10^6 200 Express your answer in terms of vacancy fraction, nv/N:
asked by Anonymous 
science
what are some characteristics bacteria have which viruses don't?
asked by Anonymous 
calculus
39x + 75y over the square root of 97 =650 how do I solve this?
asked by Cynthia 
Life orientation
5 ways in which the human or environmental problem impacts on the community.provide relevant sources to support your claims.
asked by Mulondo lawrence 
statistics
The duration of time it takes General Motors to build a car is normally distributed with a mean of 31 hours and a standard deviation of 2 hours. a) What is the probability that a single car, selected at random, will take between 28 and 34 hours? b) What is
asked by kevin 
Math
Ben conserves water in his home.He conserves 3 gallons each time he turns off the faucet when brushing his teeth.He conserves 30 gallons by running the dishwasher once a day instead of twice a day. What expression represents the total number of
asked by Brooke 
Physics
An athlete use his last 0.9s to jump from 40m to another position of 44m of a race.Find the linear acceleration of the athlete if it is assumed to be constant
asked by Brabus 
Math
one integer is 5 less than another. Find the number if the sum of their reciprocals is 17/66?
asked by Mke 
Ms.Sue
Can you please help me?I think the first question I posted the answer is 3G+30
asked by Brooke 
Math
How do you find the equation of a line with a slope of 2 and containing the points 1,5
asked by Emily 
tshiawelo
name 5 ways in which the human or enviromental problem impact on the community about teenage pregnancy
asked by ndivhuwo 
Life orientation
Name two institution or community organization that are involved in water pollution
asked by Glen 
Maths
a and b are consecutive, positive integers such that (a+b)*(ab)>22. What is the minimum possible value of a+b?
asked by Anonymous 
maths
In a recent election for class president, Monika received 7 of the 10 votes and Alfred received 3 of the 10 votes that were cast by the class. When the machine was counting the votes, it malfunctioned and instead of giving the vote to the correct person,
asked by Anonymous 
logic
ic Logic Write two arguments in English, one in the form of modus ponens and one in the form of modus tollens. Then, write the arguments in symbols using sentence letters and truthfunctional
asked by yolanda 
busuness Ethics and starting a Small B usiness
according to your text,ur main source of ethical standart are religion and
asked by Anonymous 
Life orientation
Name two community organizations that are involved in supporting these disaster of flood
asked by Anonymous 
Math
how can you go about in calculating vertical and horizontal asymptotes?
asked by Vinny 
real estate finance
1. Erin and Melissa have a combined annual gross income of $180,000. Their combined monthly long term debt is $900. What housing expense (mortgage payment) can they qualify for using standard Fannie/Freddie qualifying guidelines$______? What will be their
asked by tmouery 
Math
Find the smallest prime number N such that the following is true: The largest prime factor of N−1 is A; The largest prime factor of A−1 is B; The largest prime factor of B−1 is 7.
asked by Zeneth 
geometry
how many 3"x4"x6" boxes will fit in a 2'x3'x8' container?
asked by ALICE 
Life orientation
Human problem impacts on the community
asked by Noun 
human life
name all the health hazards
asked by Anonymous 
Statistics
Find the binominal probability...n = 15, p = .04, find P(fewer than 3)
asked by Tangee 
Math
Explain "the larger the denominator the smaller the fraction?"
asked by Tina 
life orientation
Identify3 environmntal health hazard
asked by Anonymous 
life orientation
5 factors that contribute to hiv aids
asked by hope 
is this true algebra1
3x8>13 = x>7
asked by hips 
math
1 1 1 a b c a^2 b^2 c^2 Factorise the determinant
asked by shaphuner 
math
The function f(x)= ax^3  bx +c passes through the origin, f(1)=4/3 and it has an extreme point at x=1 (i) Find the values of a, b and c. (ii) Sketch the graph (iii) Find the area bounded by the graph of f(x) and the xaxis between the lines x=1 and x=1
asked by gibbs 
ALGEBRA!!!!
How many distinct integer values of N between 1 and 1000 are there, such that N=4a+b+4c and 2N=7a+6b+7c for some positive integers a, b and c?
asked by bob 
math
Express (5x+2)/(2x1)(x+1) into partial fractions and hence expand the expression as a series in ascending power of x giving the first 4 terms
asked by mel gibbs 
life orientation
In 1015 lines critically discuss 5 ways in which the human or environmental problem impacts on the community.
asked by mpho 
Math
Solve Square root of x+1= square root of 5x9 Please help me solve this.
asked by Kelley 
life orienation
discuss 10 ways in which the environmental hazards can impact negatively on ones health
asked by lwazikazi 
Life orientation
5 human problems impact of flood on the community provide relevent sources to support your claim
asked by Mak 
mathhigh school
If the probability of an event happening is 2/5, then the probability of the event not happening is 3/5? This is False. The answer is 1/3. Explain why the answer is 1/3
asked by rick 
philosophy
I am to identify some of the features and values you associate with a just society. I want to write about affordable healthcare. Do you all think that this is a good topic. And how would I begin. I was thinking about addressing in terms of the Affordable
asked by angela 
Financial Accounting
Hobbs Company started the year with $6,000 of prepaid rent. Hobbs paid additional rent in advance amounting the $12,000. The rent expense for the year was $15,000. What was the balance in prepaid rent on the yearend balance sheet?
asked by Anonymous 
math pre calc
gaussian elimination x+Y+Z=2 Xy+5z+22 5x+y+z=22
asked by JT 
Life orientation
In 1015 line critically discuss 5 ways in which the human problem impact on the communty.provide relevant source to support your claims.
asked by Bongani 
science
what pressure would be exerted by 35g of chlorine gas in a1.5 litre vessel at 37
asked by tabisa 
algebra 1 help
1)J/5+1=4 a. no solution b. j=15 or 15 c. j=25 d.j= 15 my answer is A 2) 1/64x8=6x a. x=7, x=11 b. x=8/3, x=8/5 c. no solution d. x=1/4, x=1/5 my answer is J
asked by hips 
Physics SI unit
• what is the SI unit for electric force ?
asked by Isis 
statistics
All deal with a random variable X that follows a normal probability distribution with mean equal to 37 and a standard deviation of 5. Compute P(X < 39) Compute P(X < 29 or X > 41) Compute P(X > 30) Find the 42nd percentile for this distribution.
asked by luke 
L.O
describe the dumping waste in particular solid wastes health hazards include evidence that is current of the dumping wastes
asked by Anonymous 
Math
What are three distinct numeric approaches for calculating the product 24x32?
asked by Anna 
chemistry
Given the thermochemical equation below, calculate the amount of energy released when 250. g of NaOH (molar mass = 40.0 g/mol) reacts with an excess of HCl. Report answer to the correct number of significant figures in units of kilojoules, kJ. NaOH + HCl
asked by sarah 
Math
What is 0.0185 as a fraction and a percent
asked by Piper 
statistics
out of ten questions two students got 8 wrong find out probability if they are cheating
asked by john 
algebra 1 help
5) give one solution to the inequality 12x3x+11
asked by hips 
English
Does this sentence flow? Word does not like "can be recognized" it says it sounds passive. The logo design is created for religious organizations for letterhead, and advertising material, by which the organization can be recognized.
asked by Journey 
test
most people in Mexico live in
asked by ann petra 
Life orientation
five ways inwhich you critically how obesity impact on the teenager
asked by Guccy 
Physics
What would be the path of the Moon if somehow all gravitational forces on it vanished to zero? Please help; need an original answer no Google search. Thank you in advance...
asked by Chris 
Physics
What would be the path of the Moon if somehow all gravitational forces on it vanished to zero? Please help; need an original answer no Google search. Thank you in advance...
asked by Chris 
Physics
Why do the passengers in highaltitude jet planes feel the sensation of weight while passengers in the International Space Station do not? Please help; need an original answer no Google search. Thank you in advance...
asked by Chris 
Life orientation
Describe the life style disease/behaviour and explain 5 or more factors that contribute to the disease of substance abuse of both legal and illegal drugs among the youth
asked by Selby 
math
70% of 72=
asked by lisa 
Paraphrasing
Can you help me better paraphrase these sentences? Here are my somewhatparaphrases, but they are still similar to the original source (the part not in parenthesis is the portion that needs to be better paraphrased): (This was because) Japan had a secret
asked by Cicilia 
Life orientation
5 ways in which the human or enviromental problem impacts on the community
asked by Evans 
algebra
find the theoretical probability of each outcome. 1. randomly choosing a day of the week and it is a weekend 4. randomly choosing the letter N from the letters in NUMBER 11. the probability of a thunderstorm is 80%. what are the odds that there will be a
asked by s 
Mathematicstrigonometry
If sin theta=24 divide by 25 and theta is acute..make use of a diagram to determine the value of 7(tanøsecø)
asked by Thembisile 
l.o
identify and describe 3 environmental health hazards that cause ill health,crises,and or disasters within your community or any other community within south africa and globally.
asked by mpho 
Algebra
{5x4y=21} {2x+4y=18}
asked by Ashley 
why
Why is are economy so bad and no jobs and why are all girl's cloths inoproriat.
asked by ann petra 
Maths Calculus
We want to build a rectangular cardboard box with no top and of given volume V using the least quantity of cardboard. Find the length of the box's edges by fnding the minimum of the total surface function. Verify that the point you found is indeed a
asked by Mohit 
Social Studies.. PLEASE HELP!! :(
If you can change slavery and you chose to change the following: Slaves should not be beaten Less working hours Treat slaves as citizens PART A: give an explain and/or reason why. PART B: Who would support this decision, North, South, West, or East?
asked by Omario 
Phsycal science research
10 ways in which the human or environmental problem impacts on the community about global warming
asked by Phuti 
Algebra 1
If the side of a rectangle measures 10.5 cm to the nearest millimeter,what is the upper bound and lower bound of the side of the rectangle?
asked by Gloria 
chemistry
calculate the hydroxide ion concentration in a solution of almond extract PH.3.8.state if almond is basic or acid
asked by demi 
Math Please help ASAP
how do you find the LCM (90, 120) by taking the quotient of the product of the numbers and divide by the greatest common factor of the numbers
asked by Brain 
english
Some ancient and medieval works have several qualities present in novels. true or false.
asked by Melissa 
algebra 1
(2x1)/3 +3≤4 or (8x2)/2 1≥6 a. x≤10 or x≥2 b. x≤4 or x≥9/8 c. x≤2 or x≥2 d. x≥10 or x≥2 i got a
asked by hips 
math
A water tank can be constructed with a metal top and two square ends that holds 16 cubic meter of water and requires 40 square meter of metal. find the dimensions of the water tank.
asked by kgosi 
math
4) what number makes this inequality equivalent 6v ; v>0.5
asked by hips 
algerba 1
Solve by graphing 1. 2x27x+5=0 2. 2x2+x6=0
asked by kelly 
Science
What are the diseases of the respiratory system?
asked by lii 
Math, Calc
Which rectangular equation corresponds to this set of parametric equations? x = t + 2 and y = t^2 + 3 A. y = (x − 2)^2 − 3 B. y = (x + 2)^2 + 3 C. y = (x − 2)^2 D. y = (x + 2)^2 − 3 E. y = (x − 2)^2 + 3
asked by Chris 
mathematics
Evluate Cos22,5'
asked by ndangoz 
maths
Triangle ABC has side lengths a,b and c. If these lengths satisfy a^2=a+2b+2c and −3=a+2b−2c, what is the measure (in degrees) of the largest angle?
asked by maths lover 
Math
What is the greatest number of points of intersection with three circles that have 6 intersections using four straight lines?
asked by Elizabeth 
Calculus
U substitution on indefinite integral/antiderivative. (t^3+4)^2 t^2 On this should I use u on the parenthesis and should I put this into a natural log?
asked by Beth 
Science
During an experiment, you find that you can dissolve 3.6 g of a substance in 300 mL of water at 25°C. How much of the substance would you predict that you could dissolve in 600 mL of water at the same temperature? Can somebody help me with this? I don't
asked by Rebecca 
Math
A polymomial p(x) = ax^2 + bx + c where a, b, c are some rational, has 1 + root 3 as one of the zeros and also p (2) =  2, Find values of a, b and c.
asked by Bob 
Physics
what force can cause the displacement of an object but does no work??
asked by Kathryn 
science
What is the time of life when sex organs mature.
asked by Anonymous 
math
64(3/10)=
asked by kim 
A.P. Chemistry
Thorium232 undergoes alpha decay and has a halflife of 1.4 * 10^10 years. How long will it take for a 1.00mg sample of thorium232 to be reduced to 0.5mg?
asked by John 
math
1(1/6) x 3/8=
asked by kim 
agricultural science
Outline and explain the objectives of fencing a farmland
asked by Petunia Botha 
physics
For the vectors in the figure below, with a = 8, b = 7, and c = 113, calculate the following dot products.
asked by tae 
Calc
If w = , find w. A. 7 B. 17 C. 23 D.sqrt 7 E. sqrt 23
asked by Chris 
4 grade math
If ms smith class read for 450hrs this month. Ms Brown class read twothirds the number of hrs read by ms smith class. Ms James class read twice the hrs read by ms brown class. There are 90 students in these 3 classrooms. What was the average number of hrs
asked by marsha 
Math
64 3/10=
asked by kim 
Math
What is 1 5 of 20
asked by Brian 
Finance
1) A company wishes to issues bonds with a coupon rate of 5%. The company wishes to raise 100 million dollars net of commissions (5% of total sales). Each bond has a face value of $1,000 and matures in 10 years. Interest is to be paid semiannually. Using
asked by dpwnc 
Finance
2) The company wishes to raise $100 million by issuing stock. The current market price is $15 per share, however, if issued the price will drop to $12.50 per share. How many shares will need to be issued if under writing is 5% per share? If there are
asked by dpwnc 
Pre Algerbra
I invested $3,000, part at 2% and the rest at 5% simple interest. After 1 year, I earned a total of $117 in interest. How much did I invest at each rate?
asked by Dan 
L.O
How can fire impact negatively on one's heath
asked by thabo 
Physics
A 1.10 N bird descends onto a branch that bends and goes into SHM with a period of 0.60 s. Determine the effective elastic force constant of the branch.
asked by DL 
College math
Three coins are tossed. How many ways are there to get more than 2 tails, exactly 2 heads, only 1 tail. Thanks in advance for the help!
asked by Lorie 
algebra 1
2x+9
asked by hips 
Chemistry
Solution A is 2.40M. 20mLs of solution A is transferred to a 250mL volumetric flask and diliuted to volume with water. What is the concentration of the diluted solution?
asked by Jaime 
calculus
Consider the region above the graph of y=x^2 and below the graph of y=x+2. What is the area of this region?
asked by lisa 
chemestry
if you dissolve 350 g of K(2)CrO(4)in 2.4 kg of water, what is the molality of the solution?
asked by crystal 
L.o
5 ways in which human or environmental problem impacts the community and explanation
asked by Bongekile 
science
imagine you are going swimming at night. you turn on the spotlights at the corners of your house. the lights are pointed towards the middle of the pool, which is right behind the center of your house. will the light rays from the spotlight be refracted
asked by peaos 
Math
Harry is 6 more than twice as old as Alex. How old is Harry if their combined age is 72 years old?
asked by Anonymous 
algebra1
the school bought a new copy machine which makes 20 copies per minute.the old machine makes 12 copies per minute.francine needs 1000 copies,so she uses both machines.how long will it take to have the copies
asked by ryan 
life orientation
Write a conclusion in which you explain in one.psrsgragrsph what you lernt doing this assignment lifestyle disease
asked by nandi 
English
What is a complex sentence for the word chagrin
asked by Anonymous 
life orientation
5 ways in which the human or invironmental problem impact on the community
asked by katlego