Questions Asked on
March 10, 2012

chemistry
MnO4–(aq) + Cl–(aq) Mn2+ + Cl2(g) (unbalanced) i. Write the reduction and oxidation halfreactions (without electrons). (.5 point) ii. Balance the equations for atoms (except O and H). (.5 point) iii. Balance the equations for atoms O and H using H2O
asked by princess 
statistics
16. Based on tests of the Chevrolet Cobalt, engineers have found that the miles per gallon in highway driving are normally distributed, with a mean of 32 miles per gallon and a standard deviation 3.5 miles per gallon
asked by tone 
Ochem
Phenacetin has the structure shown below. Write an equation for its preparation starting from 4ethoxyaniline.
asked by chi 
Algebra I
The width of a rectangle is fixed at 7 cm. Determine (in terms of an inequality)those lengths for which the area will be less than 161 cm2.
asked by Jeannine 
physics
a positive charge is moving to the right and experiences a vertical upward magnetic force. In which direction is the magnetic field? to the right to the left out of the page into the page upward
asked by fatih 
physics
An RLC circuit has voltage supplied to it at a frequency of 13.0 kHz with a phase difference between the current and the voltage of magnitude 0.20 rad. If the circuit has a capacitance of 5.0 µF and an inductance of 0.050 H, find the resistance of the
asked by fatih 
physics
An iron wire has a crosssectional area equal to 1.20 105 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 34.0 A. (a) How many kilograms are there in 1.00 mole of iron? 1
asked by pam 
6th Grade Christian History
1. when he roman government began to persecute Christians under Nero, a) Christianity almost disappeared b) Christians had to cremate their dead c) Jews hid themselves in their homes d) Christianity was outlawed 2. the bishop of Rome was also known by the
asked by ☻i♥zee☻ 
math
a pizza has a circumference of 47.1in. what is the radius
asked by daryl 
Precalculus
Use one of the identities cos(t + 2πk) = cos t or sin(t + 2πk) = sin t to evaluate each expression. (Enter your answers in exact form.) (a) sin(19π/4) (b) sin(−19π/4) (c) cos(11π) (d) cos(53π/4) (e) tan(−3π/4) (f) cos(π/4) (g) sec(π/6+ 2π)
asked by Kaleen 
Chem. help please
A zinccopper battery is constructed as follows at 25 degree C: Zn  Zn2+(0.15 M)  Cu2+(1.70 M)  Cu The mass of each electrode is 250. g. I found the cell potential to be 1.13V and the cell potential after 5.00 A of current has flowed for 8.00 h is
asked by Puja 
calculus
A projectile is launched from a platform 20 feet high with an initial velocity of 72 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t2 + 72t + 20 feet. (a) How many seconds after launch does the projectile
asked by Brian 
AP CHEMISTRY
Calculate the solubility of Mn(OH)2 in GRAMS PER LITER when buffered at each of the following. a)pH 7.4 b)pH 9.2 c) pH 11.5
asked by fernatesfsdf 
Ochem
Give two reasons why the crude product in most reactions is not pure.
asked by chi 
Calculus
Two ships are leaving port at the same time. The first ship is sailing due east at 20 km/hr and the other due north at 15 km/hr. How fast are the ships moving away from each other 2.0 hr later?
asked by Candy 
Chemistry
If Kc = 0.480 at 40.°C and Kc = 0.630 at 90.°C, what is ΔH° for the reaction? XY
asked by Andrew 
english
What is the underlying message of all of Arthur Jarvis’s writing? How does reading his son’s writing affect the behavior of James Jarvis?
asked by john 
math
A 1Om ladder rests againts the wall of a house.The foot of the ladder on the ground is 1.3 m from the wall.What angle does the ladder make with the wall?
asked by NIRVANA RIZA A. GARON 
Math
Mr. Rogers wants to fence in a rectangular garden next to a straight section of the Scioto River. He has 330 feet of fencing to do the entire job. He doesn’t need fencing along the river, and there is a 4.5 foot wide clearance for a gate at one end. What
asked by Sandy 
precalc!!!!!
The point (5,2) lies on the graph of y=f(x), and assume f^1(x) exists. Find the corresponding point on eAch graph. A). Y=f^1(x) I get (5,2) B). Y=f^1(x)+4 I get (5,2) C). Y=f^1(x+2)+3 I get (7,5) Did I get these right?
asked by L.Bianchessi 
chemistry ap ...urgent! please help me!
The measurement of pH using a glass electrode obeys the Nernst equation. The typical response of a pH meter at 25.00 degrees C is given by the equation: E(measured)= E(ref) +.591pH where ref contains the potential of the reference electrode and all other
asked by Kirti 
Pre Calculus
Use one of the identities cos(t + 2ðk) = cos t or sin(t + 2ðk) = sin t to evaluate each expression. (Enter your answers in exact form.) (a) sin(17ð/4) (b) sin(−17ð/4) (c) cos(17ð) (d) cos(45ð/4) (e) tan(−3ð/4) (f) cos(7ð/4) (g) sec(ð/6+2ð)
asked by Stephanie823 
math
A 35foot long ladder is leaning against the wall of a building.How far from the ground is the top of the ladder and how far from the base of the building is its foot if it makes a 20 degrees angle with the wall?
asked by NIRVANA RIZA A. GARON 
b.law
Over many years, Jake and Jo Bob built up a barbeque ribs business, Hambones, Inc., which caters picnics and parties and sells ribs and corn at county fairs. They have several creditors, including Sauce Supply and First State Bank. Two years ago, in
asked by parth 
6th Grade Christian History
Why did Christian church come to be ruled by hierarchy? Any and all help is appreciated. ☺♦☻
asked by ☻i♥zee☻ 
statistics
if the average number of textbooks in professors' offices is 16, the standard deviation is 5, and the average age of the professors is 43,with a standard deviation of 8 ,which data set is more variable ?
asked by linda 
Chemistry
The decomposition of hydrogen peroxide in the presence of potassium iodide is believed to occur by the following mechanism: step 1 slow: H2O2 + I^ = H2O + OI^ step 2 fast: H2O2 + OI^ = H2O + O2 + I^ 1) What is the equation for the overall reaction? Use
asked by Hannah 
physics
an RlC circuit has a resistance of 4 kOhm, a capacitance of 33 uF, and an inductance of 23 H. if the frequency of the alternating current is 2/pi kHz, what is the phase shift between the current and the voltage.
asked by fatih 
Literacy
10. Use one of the sources available in the Almanacs and Yearbooks section to identify the approximate time of sunrise in Anchorage, Alaska, on December 25, 2015. A. 10:15 A.M. B. 9:45 A.M. C. 11:30 A.M. D. 8:10 A.M. ANSWER IS A
asked by Mrs. Jane 
chemistry
MnO4–(aq) + Cl–(aq) Mn2+ + Cl2(g) (unbalanced) i. Write the reduction and oxidation halfreactions (without electrons). (.5 point) ii. Balance the equations for atoms (except O and H). (.5 point) iii. Balance the equations for atoms O and H using H2O
asked by princess 
Math
Each cube below is made up of smaller cubes, but the large cubes are not solid. They had tunnels through them. • The first cube originally had 27 small cubes, but the tunnel removed 3 cubes. • The second cube originally had 64 small cubes, but two
asked by Jiyeon 
precalc!!!!!
The point (5,2) lies on the graph of y=f(x), and assume f^1(x) exists. Find the corresponding point on eAch graph. A). Y=f^1(x) I get (5,2) B). Y=f^1(x)+4 I get (5,2) C). Y=f^1(x+2)+3 I get (7,5) Did I get these right?
asked by L.Bianchessi 
history
Which U.S. Supreme Court decision made it illegal to achieve diversity through the use of racial quotas?
asked by Anonymous 
science
3 Some bacterial toxins cause cells lining the digestive tract to secrete ions, making the contents of the tract hypertonic. What effect does this have on patient’s water balance?
asked by ’MICROBIOLOGY 
English
I need your help to check these sentences, Writeacher. Thank you very much in advance. 1) Winston's face is ruddy for the low quality soap and blunt razor blades he uses. 2) His face is ruddy for the use of low ..(Which one is best?) 3) Everything seems
asked by Henry 
Math
y= sqrt(81x^2) What length and width should the rectangle have so that its area is a maximum? (smaller value) (larger value)
asked by Angelina 
Chemistry: Identifying Substances
Hi! I would like to know the definitions for... ELEMENT: something on the periodic table? COMPOUND: molecule with at least 2 different elements? SYMBOL: i'm confused about this FORMULA: i'm confused about this ATOM: smallest units of elements? MOLECULE: a
asked by Cicilia 
math
An electric post was broken by a strong typhoon.It formed a right triangle with the ground.If a broken part makes an angle of 25 degrees with the other part,and the topmost part of the post which is post which is on the ground is 40 ft from the base,how
asked by NIRVANA RIZA A. GARON 
physics
An ion enters a mass spectrometer which has a .18 T field perpendicular to? an electric field of 1.6 kV/m and selects a velocity. the same magnetic field is then used to deflect the singly charged ion into a circular path of radius 12.5 cm. a. what
asked by fatih 
Calculus
Suppose that sin q = − 12/13 and that q is a Quadrant IV angle. (a) Find the exact value of cos q. Show work. (b) Find the exact value of sin 2q. Show work.
asked by Brian 
Calculus
A can of soda at 80° F. is placed in a refrigerator that maintains a constant temperature of 36° F. The temperature T of the soda t minutes after it is placed in the refrigerator is given by T(t) = 36 + 44 e^–0.058 t Find the temperature of the soda 10
asked by Brian 
Physics
Please help! I've tried several times on my calculator and I can't get it right! Find the force of attraction on a 3 kg mass at the surface of a planet given the following information about the planet: mass = 5.98 x 1024 kg, radius = 6.38 x 106 m. Find the
asked by Sam 
PHYSICS
Find the force of attraction on a 3 kg mass at the surface of a planet given the following information about the planet: mass = 5.98 x 10^24 kg, radius = 6.38 x 10^6 m. Find the force if the radius is doubled to 12.76 x 10^6m Thanks!!
asked by Sam 
Math
A 10 year old has a heart rate of 210 and a 15 year old has a heart rate of 205 and so on. Right an equation that can be used to find the maximum heart rate for any age. It says the relationship is linear if that helps.
asked by Paige 
Algebra
A company produced 2,590,000 small appliances in one year and made a profit of 6,590,000. What was the profit of each appliance? Express the answer in scientific notation in two decimals
asked by Marie 
Life orientation
What, according to the basic conditions of employment act applies with regard to the contraventions?
asked by Sthembiso 
AP CHEMISTRY
Calculate the solubility of Mn(OH)2 in GRAMS PER LITER when buffered at each of the following. a)pH 7.4 b)pH 9.2 c) pH 11.5
asked by JIM 
Algebra
Archaeologists and forensic scientists use the length of of human bones to estimate the height of his/her femur f(the bone from the knee to the hip socket), in centimeters using the following formulas: Male h=69.089+2.238f Female: h = 61.412+2.317f a. a
asked by kim 
math
A 35foot long ladder is leaning against the wall of a building.How far from the ground is the top of the ladder and how far from the base of the building is its foot if it makes a 20 degrees angle with the wall?
asked by nestor v. reye,Jr. 
HELP! College Physics
A skateboarder shoots off a ramp with a velocity of 6.7 m/s, directed at an angle of 59° above the horizontal. The end of the ramp is 1.1 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the
asked by Angela 
6th Grade Christian History
Why were the Christians persecuted by the Romans? At first I thought it was because they didn't believe in God. But then I had the question "to the Romans what was appealing about Christianity? What did they like about the teachings?" Please help!! I am
asked by ☻i♥zee☻ 
Math: Limits
Estimate the limit numerically. lim as x→(approaches to)5 6e^(x − 5) How do I solve it? I don't plug in the numbers do I? Then how do I do this as well? What should I do to solve lim x→(approaches to)− infinity 6xe^(7x) Do I disregard the other
asked by Nick 
chemistri
what are van der waals forces
asked by jake 
Statistics
Let x and y be the amounts of time (in minutes) that a particular commuter must wait for a train on two independently selected days. Define a new random variable w by w = x + y, the sum of the two waiting times. The set of possible values for w is the
asked by Roshelle 
Physics
a 60 gram tennis ball completed 5 revolutions in 1.68 seconds. given that the radius was 35 centimeters, what haning mass was used
asked by Sarah 
Literacy
Are there any good literacy sites?
asked by ☻i♥zee☻ 
Algebra
In 1966, the U.S. Surgeon General's health warnings began appearing on cigarette packages. Data gathered after 1965 indicate that public awareness of the health hazards of smoking has had some effect on consumption of cigaretts. The percentage, p, of the
asked by kim 
arithmetic
find comparsion as a ratio reduce to lowest term of 47ft and63yd.
asked by janice brown 
english
how to start an opening paragrph for explaning what love and infatuation means
asked by alexis 
Math ?
If p is a positive integer and is greater than 3. How many prime integers are there in 3p including 1 and 3p
asked by Help 
AP Chem
An apparatus consists of a 4 L flask containing nitrogen gas at 32 C and 885 kPa, joined by a valve to a 8 L flask containing argon gas at 32 C and 47.5 kPa. The valve is opened and the gases mix. What is the partial pressure of nitrogen after mixing?
asked by Sarah 
Organic Chemistry
How do you synthesize methysulfonyl benzene from Benzene?
asked by Tom 
Chemistry
Write the balanced equation for the double replacement reaction of: Barium chloride and Sulfuric acid
asked by Kristy 
Math ?
If p is a positive integer and is greater than 3. How many prime integers are there in 3p including 1 and 3p
asked by Help 
math
solve the system 7x^2  5y^2 + 20y = 3 21x^2 + 5y^2 =209
asked by Martin 
Ochem
In the reaction between paminophenol and acetic anhydride to form acetaminophen, what was the purpose of adding water to the reaction mixture? There are a couple of possible answers, and this requires a detailed explanation for credit. thanks!
asked by chi 
Ochem
If 1.43 g of 4ehoxyaniline and an excess of the acylating agent were used to prepare phencetin, what is the theoretical yield of product?
asked by chi 
math
A town has a population of 32,000 in the year 2002; 35,200 in the year 2003; 38,720 in the year 2004; and 42,592 in the year 2005. If this pattern continues, what will the population be in the year 2016?
asked by Brittany 
Math
Which represents the type of sequence: 12, 22, 30, 36, 41, …? neither arithmetic nor geometric both arithmetic and geometric arithmetic geometric
asked by Brett 
business
what process do you follow to come to a conclusion
asked by Anonymous 
Circuits
I want to know why is it that a voltage in a capacitor cant change instantaneously and why the current in an inductor cant change instantaneously either. Also, a capacitor stores energy, like a battery, right? Why is it that it can't be used to power, say,
asked by Tina 
math
Find the area of some figure which have radius of 42cm and degree60
asked by Fay 
math
A rate of 40 percent could be expressed as 2/5.true or false
asked by Anonymous 
math please
Which Represent the first two terms of the sequence a1=2 and an=2(an1)^2 2, 8 8,128 16,1024 2,16
asked by rob 
math
what's 60% of $47,000.00
asked by Dee 
math
Which is the eighth term in the sequence an=1/125(5^n1)
asked by Beth 
College Physics
A proton moves with a velocity of vector v = (6ihat  1jhat + khat) m/s in a region in which the magnetic field is vector B = (ihat + 2jhat  3khat) T. What is the magnitude of the magnetic force this charge experiences? answer in Newtons. I tried F=qvb
asked by Anand 
math quick question
I got a problem that states which graph represents the sequence of 1,2.5,4,5.5,7.. Should the graph start at 1,1 or 0,1?
asked by rob 
physics
at 3.68100017 kHz the reactance in a circuit of a 9 uF capacitor and an inductor are equal in magnitude. what is the value of the inductor? a. .000020 H b. .000020 mH c. .000021 uH d. .000021 mH
asked by fatih 
Literacy
20. Which of the following sets of Library of Congress call numbers is in the correct order? A. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L166 1995, E88 G62 L45 B. E88 G62 L166 1995, E88 G62 L45, E88 G62 D225, E88 G2512 S57 1998 C. E88 G2512 S57 1998, E88
asked by Mrs. Jane 
Literacy
18. What are the subject headings for the 2002 edition of Invisible Man? A. American literature—History and criticism B. African Americans in literature—Outlines, syllabi, etc. C. Ellison, Ralph. Invisible man D. African American men—Fiction ANSWER
asked by Mrs. Jane 
English
Here are some more sentences I really need you to check. Thank you. 1) His work (better job) consists in changing the words of the news as the Party wants to, in order to control people. 2) The party aims to eradicate individuality. The information
asked by Henry 
Literacy
13. Which of the following publications are both listed under the "Magazines" results? A. Science News and Earth Island B. The Economist and American Scientist C. Odyssey and Natural History D. Astronomy and Science ANSWER IS A
asked by Mrs. Jane 
Literacy
11. In the article, "How Lethal Was the KT Impact?" by Richard A. Kerr and Virginia Morell, what is listed as part of the related subject matter? A. Palentology B. Science C. Mexico D. Asteroids ANSWER IS C
asked by Mrs. Jane 
algebra
Which is the eighth term in the sequence an=1/125(5^n1)
asked by Beth 
Literacy
2. Utilizing the publication search function on EDSeek's Home page, which of the following companies publishes Pediatric Nursing? A. Royal College of Nursing Publishing Company B. Elsevier Science Publishers C. Jannetti Publications, Inc. D. Advanstar
asked by Mrs. Jane 
chemistry
Write the balanced equations for the following examples: a) potassium hydroxide + sodium sulfide > potassium sulfide + sodium hydroxide b) carbon disulfide + oxygen > carbon dioxide + sulfur dioxide
asked by Nene 
PHYSICS
Determine the value for the acceleration due to gravity at the surface of the planet Mars, given the following data: Mass of Mars = 6 .42 x 10^23 kg Radius of Mars = 3.37 x 10^6 m Thanks!
asked by Kelly 
Literacy
7. Which search engine would be best to use when you want to know if your local library carries a particular journal? A. Worldcat B. Webarchive C. All the Web D. Google Scholar ANSWER IS A
asked by Mrs. Jane 
ALGEBRA
NEED TO FIND THE DOMAIN AND RANGE OF F(X)=2X3
asked by CAROLYN 
Physics
A mass sits at the top of a 2 meter long ramp inclined at an angle of 30 degrees (to the horizontal). When the mass is released, it slides down the ramp and then onto a level floor. If both the ramp and the board have a coefficient of .25 (Friction), how
asked by Mary 
Physics
A mas of 100 Kg hangs from a cable secured to a steel pole and supported by another cable as shown below. Find the tension (T) in the support cable and the force (F) on the steel pole.
asked by Mary 
physics
A skater of mass 74.5 kg initially moves in a straight line at a speed of 5.10 m/s. The skater approaches a child of mass 37.5 kg, whom he lifts on his shoulders. Assuming there are no external horizontal forces, what is the skater's final velocity?
asked by sally 
Algebra
n 1966, the U.S. Surgeon General's health warnings began appearing on cigarette packages. Data gathered after 1965 indicate that public awareness of the health hazards of smoking has had some effect on consumption of cigarettes. The percentage, p, of the
asked by kim 
chemistry
Fuel oil and bitumen is 38% in demand Petrol and Naptha is 27% in demand Diesel is 23% in demand. A question asks: Why are these fractions in demand? I am not sure how to answer this questions and please advise me to how to answer this question. Thanks in
asked by Ruth 
Business
Please explain what is global warming?. And How Do Business Enterprises contribute towards economic growth??? And Please Name Me The Socioeconomic issues
asked by Khabo 
chemistry
What must be known for the rate constant to be calculated from the rate law?
asked by princess 
chemistry
if i have 5.6 liters of gas in a piston ata pressure of 206 kPa and compress the gas until its volume is 4.8L, what will the new pressure inside the piston be? how do i that problem?
asked by bobby 
biology:plz help
state the name for the action of two oppposing miscles, such as the biceps and the triceps.
asked by pooja 
physics
An electron is a subatomic particle (m = 9.11 x1031 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.11 x 105 m/s to a final velocity of 1.67 x 106 m/s while traveling a distance of
asked by Natasha 
physics
A small plane mass 600 kg lifts off from the runway at a speed of 145 Km/Kr. 2 Minutes later, the plane has reached an altitude of 300 meters and its airspeed has dropped to 90 Km/Hr. Assume the power output of the engine was constant during this time.
asked by Mary 
Human geography
Identify the principles of human geography
asked by Merlin 
Chem
Why do the rate of reaction for a reversible reaction slows down at equilibrium stage.
asked by Rose 
social studies
I need help figuring out 2 things that help creat a nation that are good for the nation capish
asked by Benji 
math
If f(x)= x^1/2 if x¡Ý 0 and (x)^1/2 if x>0 then the root of the equation f(x) = 0 is x = 0. Explain why Newton¡¯s method fails no matter which initial approximation p_0¡Ùo is used. Illustrate your explanation with a sketch.
asked by Lanloxely 
biology
can toads are considered a pest in australia are there anyways that they can adapt to their surroundings without the food chain being damaged
asked by Benji 
A A U
How can i write a seminar report on Eutrophication
asked by Mudi 
precalc!!!!!
The point (5,2) lies on the graph of y=f(x), and assume f^1(x) exists. Find the corresponding point on eAch graph. A). Y=f^1(x) I get (5,2) B). Y=f^1(x)+4 I get (5,2) C). Y=f^1(x+2)+3 I get (7,5) Did I get these right?
asked by L.Bianchessi 
science
find derivative of f(x)=1/sqx^2+1 by using the definition of derivatives
asked by ibk 
science
: A medical microbiological lab report indicates that a sample contained a biofilm, and that one species in the biofilm was identified as Neisseria gonorrhoeae. Is this strain of Neisseria likely to be pathogenic? Why and why not?
asked by MOCROBIOLOGY 
geometry
In the accompying diagram of circleo, diameter ad,chord AE,ans secantsCAB and CDE are drawn ; m angle BAD=40;and m arch AE=5((m arch ED) what is the measure of ACE?
asked by Vanna 
science
An electron micrograph of a newly discovered cell shows long projections with a basal body in the cell wall. What kind of projections are these? Is the cell prokaryotic or eukaryotic? How might this cell behave in its environment because of the presence of
asked by ’MICROBIOLOGY 
Pre Calculus
Use one of the identities cos(t + 2ðk) = cos t or sin(t + 2ðk) = sin t to evaluate each expression. (Enter your answers in exact form.) (a) sin(17ð/4) (b) sin(−17ð/4) (c) cos(17ð) (d) cos(45ð/4) (e) tan(−3ð/4) (f) cos(7ð/4) (g) sec(ð/6+2ð)
asked by Stephanie823 
Physics (dynamics)
A 47.0 kg slab rests on a frictionless floor. A 18.0 kg block rests on top of the slab. The static coefficient of friction between the block and the slab is 0.50, while the kinetic coefficient of friction is 0.40. The top block is acted upon by a force of
asked by Andrew 
SINCE
Describe how bacterial fermentation causes milk to sour
asked by ’MICROBIOLOGY 
MICRO
Some bacterial toxins cause cells lining the digestive tract to secrete ions, making the contents of the tract hypertonic. What effect does this have on patient’s water balance?
asked by ’MICROBIOLOGY 
SCIENCE
How are photophosphorylation and oxidative phosphorylation similar? How are they different?
asked by ’MICROBIOLOGY 
math
In a clinical trial, a drug used to relieve pain caused side effects in 9% of the patients who took it. For a new trial, three patients were selected at random. Find the probability that none of those patients had side effects.
asked by karen 
SCIENCE
Describe how bacterial fermentation causes milk to sour.
asked by ’MICROBIOLOGY 
math
The odds against pats winning the election are 6:7 with these odds, what is the probablity that pat will win the election.
asked by karen 
SCIENCE
How are photophosphorylation and oxidative phosphorylation similar? How are they different?
asked by ’MICROBIOLOGY 
science
How are photophosphorylation and oxidative phosphorylation similar? How are they different?
asked by ’MICROBIOLOGY 
science
: Describe how bacterial fermentation causes milk to sour.
asked by ’MICROBIOLOGY 
math problem
please help me simplify ∛(1)
asked by Lavern 
biology:plz someone help
The heart lung machine is used so that surgeons can operate on the arteries supplying heart muscle. These arteries may be diseased. (a) Name these arteries and explain how they may become diseased. (b) suggest why a patient is put on a heart lung machine
asked by pooja 
math
17. Burger King's DriveThrough: Suppose that cars arrive at Burger King's drivethrough at the rate of 20 cars every hour between 12:00 noon and 1:00 PM. A random sample of 40 onehour time periods between 12:00 noon and 1:00 P.M. is selected and has 22.1
asked by tomas 
Physiology (reproduction)
if only one sperm penetrates into the zona pellucida of the ovum n other sperm which try to bind to the ovum are prevented from binding by the cortical granules secreted by exocytosis than what happens in Sextuplet? please give a detailed explanation.
asked by kamran Ahmed 
calculus
A tank consists of a right circular cylinder at height (h)surmounted by a hemisphere at a radius (r) with an outlet atthe top. The tank is full of water at density ρkg/m3. Find the work required to empty thetank.
asked by Peter 
3 D  geometry (direction of cosines)
Find the angle between the lines between the lines whose direction cosines satisfy the equations l + m + n = 0 and 2mn + 3nl  5lm =0.
asked by uma 
chem
If one started will 7.72g of copper (11) chloride, how many gram of copper could be produced ?
asked by linda 
Science
Can someone help me come up with a discussion question about pulmonary embolism? I have to ask my class at least two questions about it and have a five minute discussion. Does anyone have any ideas?
asked by Rebecca 
physics
Tarzan plans to cross a gorge by swinging in an arc from a hanging vine. If his arms are capable of exerting a force of 1820 N on the rope, what is the maximum speed (in meters/second) he can tolerate at the lowest point of his swing? His mass is 83.0 kg,
asked by jess 
physics
a ball is thrown at an angel of 40 degee above tghe horizontal.the ball clears the fence whis is 85 metre away.what is the inital velosity of the ball if we assume the ball is thrown at the same elevation of the fence
asked by raj 
Math  HELP !
there are 50 students in the seventh grade , 62 percent of these students are involved in the drama club.how many seventh grade students are in the drama club ?
asked by Remy 
chemistry
what is the pH and pOH of a soution with a volume of 5.4 that contains 15 grams of HCl and 25 grams of nitric acid
asked by Anonymous 
Physics
An asteriod is found a distance from the sun equal to 32 units times the earth's distance. What will be the length of time in years required for this asteriod to make one revolution around the sun?
asked by Sam 
PHYSICS
Determine the value for the acceleration due to gravity at the surface of the planet Mars, given the following data: Mass of Mars = 6 .42 x 10^23 kg Radius of Mars = 3.37 x 10^6 m Thanks!
asked by Jake 
English
I still have some more corrections I'd like you to check. Thank you. Please, I really need you help! 1) Because of Eton's restrictive moral code he became more and more strongminded. He chose Orwell from the name of the river he liked. 2) He changes the
asked by Henry 
Math
This problem pertains to Cuisenaire Rods: 1white 2red 3green 4purple 5yellow 6dark green 7black 8brown 9blue 10orange Question: (a) If an allbrown train is equal in length to an allorange train, what can be said about the number of brown rods
asked by James 
math
explain how to find ans. a clock has a circumference of 166cm. what is the diameter
asked by daryl 
Marketing
Identify a firm in any industry operating and discuss the segmentation strategies for it's product
asked by Ayensu 
Math
simplify: 22/sqr18 + sqr7
asked by Billy 
rosemont
a pizza was sliced 10 pieces. bill ate 2/10 of the pizza how much of the pizza was left?
asked by angel 
math
In a clinical trial, a drug used to reduce blood pressure caused side effects in 6% of the patients who took it. For a new rial, two patients were selected at random. Find the probability that both the patients had side effects.
asked by karen 
US History Since 1876
How is the KKK and the Universal Negro Improvement Association the same? I am having trouble with coming up with reasons on how they were the same. I have several different reason's why they are not but I need help with this please!!
asked by Jason 
Math
Find the points of inflection of the graph of the function. (If an answer does not exist, enter DNE.) f(x) = 1/3x^4 + 4x^3 for some reason I am not getting the right answer; I got the graph on my calculator but it seems weird.
asked by Angelina 
algebra
There is a 100 point test with 38 questions. The test has 2 point questions, and 5 point questions. How many 5 point questions and 2 point questions are there?
asked by Paige 
Physics
A long cylindrical insulator has a uniform charge density of 1.0 #C/m3 and a radius of 9.0 cm. a) What is the electric field inside the insulator at a distance of 4 cm? b) What is the electric field at 17 cm? c) How much work must you do to bring a q =
asked by Fatima 
math
how do you find the area of 5 5/8 and 2 7/8?
asked by michael 
college Math
perform the indicated operation, give answer in scientific notation. (5x10^2)x(5.6x10^4)
asked by Anonymous 
statistics
1. On a measure of anxiety, the mean is 79 and the standard deviation is 12. What are the zscores for each of the following raw scores?
asked by bertha 
math
what are the equivalent fractions for 7/20
asked by shion 
statistics
M= 500 SD= 100 What X value, separates the top 15% of the distribution from the rest?
asked by Amy 
matrh
what are the equivalent fractions for 9/8
asked by shion 
accounts
January 1,07 S.Henry sales ledger appear D Fung $200 and C Manley $120.On february 1 Henry accept $150 from D.Fung and march 10, C.Manley was declared bankrupt.a payment of 30cent in $ was receive in full settlement. Show how these would appear in Henrys
asked by charlette powell 
statistics
M= 19.8 SD= 7.2 What is the probability of randomly selecting a student with a treadmill time greater than 25 minutes? In symbols, P(X > 25) = ?
asked by Amy 
Calculus
The total charge in an electrical circuit as a function of time is given by q=t/(t^2+1) coulombs. Find the maximum charge of q.
asked by Candy 
Calculus
Water reaches its maximum density above its freezing point. The volume V (in cubic diameters) of 1 kg of water at temperature T between 0 degrees C and 30 degrees C can be approximated by the formula V=999.87  0.06426T + 0.0085043T^2  0.0000679T^3. Find
asked by Candy 
Calculus
The strength of a beam with rectangular corsssection is directly proportional to the product of the width and the square of the depth (thickness from the top to bottom of the beam). Find the shape of the strongest beam that can be cut from a cylindrical
asked by Candy 
Calculus
A closed box is to be a rectangular solid with a square base and volume of 12 ft^3. Find the most economical dimensions if the top of the box is twice as expensive as the sides and bottom.
asked by Candy 
Calculus
A cicular metal plate is being heated and expands so that its radius increases at the rate of 0.25 mm/min. How fast is the area increasing when the radius is 10 cm?
asked by Candy 
Calculus
A boat being pulled toward a wharf by a rope attached to the boats deck from a point 8.0 m above the deck. If the rope is being pulled in at a rate of 2.0 m/min, how fast is the boat approaching the wharf when it is 12.0 m away?
asked by Candy 
Calculus
Wheat is poured on the ground at a rate of 12 ft^3/s. The pile forms a cone whose altitude is always three fourths of the radius. Find the rate at which the altitude is increasing when the altitude is 6.0 ft.
asked by Candy 
statistics
Just wondering if someone is able to give instructions as to how to go about this questions? As part of a large research project, a social psychologist develops a measure of global environmental attitudes (i.e., general attitudes towards the environment).
asked by MM 
Math
How many positions would be needed to represent 57^10,001 in ordinary decimal notation. Thanks!
asked by Sandy 
statistics
1. A test has a mean of 50, standard deviation of 10. A. What scores separate the middle 25% from the rest b. What proportion would be expected to score between 45 and 55 c. What proportion would be expected to score 68 and above
asked by Susan 
Physics
The pulley system shown in the figure is used to lift a 52{\rm kg} crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. The crate is rising with an acceleration of 2.5 m/s^2.
asked by JO 
Algebra
The value of many things we own depreciates over time. When an asset's value decreases by a fixed amount each year, the depreciation is called straightline depreciation. Suppose your Ford Escape from Exercise 1 depreciates $1950 per year. a.Let v
asked by kim 
Math Geometry
given triangle abc, measure of angle b= 120 degrees, ab= 6 units, bc= 10 units, find the area of abc
asked by Anonymous 
math
y = 40 + (x  600)*0.35 y = 50 + (x  600)*0.10 what are the steps to get the answer
asked by des 
physics
a magnetic field goes from the top to the bottom of this page. what direction will a proton moving diagonally from the upper left to the lower right deflect? Assuming paper lies flat. a.downward b.upward c.left d.right
asked by fatih 
physics
two particle with equal mass, one carrying a charge q and the other 2q each enter at right angles to a uniform magnetic field with the same velocity. which is deflected into a circular path with the larger radius?
asked by fatih 
math
(4.35E2  x)(7.56E2 x ) ============================ (0.324 + 2x)2 Rearrange to get an expression of the form ax2 + bx + c = 0 and use the quadratic formula (solve for x. This gives: x = 1.05E2, 0.143 basically i understand they use the quadratic
asked by bob 
math
a square playground has area of 174 m2 .what is the approximate lenght of each side of the playground?
asked by brenda 
calculus
2. Let R be the region in the first quadrant bounded by the graphs of (x^2/9)+(y^2/81)=1 and 3x+y=9 . a. Set up but do not evaluate an integral representing the area of R. Express the integrand as a function of a single variable. b. Set up but do not
asked by Taeyeon 
Calculus
Let f (x) = 5x^2 – 9 and g(x) = x – 3. (a) Find the composite function ( f o g)(x) and simplify. Show work. (b) Find ( f o g)(2) . Show work.
asked by Brian 
Calculus
Find the equation for a line which passes through the points (–1, 1) and (3, –7). Write the equation in slopeintercept form. Show work.
asked by Brian 
physics
A 0.5 kg airhockey puck is initially at rest. What will its kinetic energy be after a net force of 0.3 N acts on it for a distance of 0.5 m
asked by Michelle 
Calculus
For the parabola given by (y – 3)^2 = 8(x + 5), find the following: (a) direction parabola opens (to the left, right, up, or down) Answer: ___________ (b) vertex Answer: ___________ (c) focus Answer: ___________
asked by Brian 
Calculus
Points (–1, 6) and (–3, 2) are endpoints of the diameter of a circle. (a) What is the exact length of the diameter? (Simplify as much as possible) Answer: ________ (b) What is the center of the circle? Answer: ____________ (c) What is the equation of
asked by Brian 
College Physics
(a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 9.62 m/s when going down a slope for 4.00 s? (b) How far does the skier travel in this time?
asked by Ryan 
Calculus
Bob, a resident of Metropolis, pays Metropolis an annual tax of $50 plus 1.9% of his annual income. If Bob paid $2,387 in tax, what was Bob's annual income?
asked by Brian 
physics
How much work does a 69 kg person do against gravity in walking up a trail that gains 790 m in elevation
asked by Michelle 
Calculus
Given the function" f(x)=1/4x− 3, find a formula for the inverse function.
asked by Brian 
Calculus
(a) State the reference angle associated with 265°. (b) Convert 265° to radians. Leave the answer in terms of pie .
asked by Brian 
Calculus
Given y = 5 sin(6x – pie), state the (a) period (b) phase shift
asked by Brian 
Managerial accounting
I have homework in managerial accounting, textbook by Atkinson 6edition. Problems, 1059, 1068, 1168 and case 1173. Pages; 446, 450, and 504. Thank you.
asked by John Williams 
Math
In 1995 the united states recovered 21% of its municiple solid waste through recycling up from 17% in 1990. Let y represent the percentage recycled and let x equal the number of years since 1990. Find the linear function that fits this data.
asked by Ann 
Math
How can you find a copy of the King of the Ring Worksheet. I lost it and I need a new copy
asked by Adam 
English
I still have some sentences to check. Thank you very much to you all! 1) He was one of the most famous foreigners participating in the efforts against the fascist rebels/the fascists/fascism (are they all possible?) 2) His indifference to accepted values
asked by Henry