Questions Asked on
February 20, 2012

chemistry  crude product
WHAT IS THE CRUDE PRODUCT IN RECRYSTALLIZATION?
asked by lou 
Trigonometry
Simplify #1: cscx(sin^2x+cos^2xtanx)/sinx+cosx = cscx((1)tanx)/sinx+cosx = cscxtanx/sinx+cosx Is the correct answer cscxtanx/sinx+cosx? Simplify #2: sin2x/1+cos2X = ??? I'm stuck on this one. I don't know what I should do. Simplify #3:
asked by Anonymous 
Chemistry
For the following reaction, Kp = 3.5 104 at 1495 K. H2(g) + Br2(g) 2 HBr(g) What is the value of Kp for the following reactions at 1495 K? (a) HBr(g) 1/2 H2(g) + 1/2 Br2(g) (b) 2 HBr(g) H2(g) + Br2(g) (c) 1/2 H2(g) + 1/2 Br2(g) HBr(g)
asked by Elizabeth 
Chemistry
The equilibrium constant Kp for the reaction below at 700°C is 0.76 atm. CCl4(g) > C(s) + 2 Cl2(g) Determine the initial pressure of carbon tetrachloride that will produce a total equilibrium pressure of 1.20 atm at 700°C
asked by Andre 
Geometry Are these two triangles similar? Thanks!
Are these two triangles similar? How do you know? There are two triangles HMG and JMK They are connected at the top point at M H is on the bottom left, G is on the bottom right, and M is at the top for triangle HMG For triangle JMK J is on the bottom right
asked by Megan 
geometry
A 24 foot ladder forms a 76 degree angle with the ground. The top of the ladder rests against the building. To the nearest inch how high up the building does the ladder reach?
asked by jill 
English
It must be nice," she said. "It must be very nice. I wish women could do such things." "It ain't the right kind of a life for a woman. Her upper lip raised a little, showing her teeth. "How do you know? How can you tell?" she said. "I don't know, ma'am,"
asked by Jess 
calculus
the point (1,9) lies on the graph of an equation y=f(x) for which dy/dx=4x(sqrt(y)) where x is greater than or equal to 0 and y is greater than or equal to 0 a)6 b)4 c)2 d)sqrt(2) e)0
asked by victoria 
Chemistry
At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.81 atm and 0.20 atm, respectively
asked by Elizabeth 
Chemistry
The equilibrium constant Kp for the reaction below at 700°C is 0.76 atm. CCl4(g) C(s) + 2 Cl2(g) Determine the initial pressure of carbon tetrachloride that will produce a total equilibrium pressure of 1.20 atm at 700°C
asked by Elizabeth 
Chemistry
How much HCO2H is obtained by reacting 3.0g of FeS, 1.60g H2S, and 1.60g CO2 if the reaction results in a 47.0% yield? I know that I need to the molar mass of each which FeS3.2/87.9=0.036 H2S1.6/34.1=0.047 CO21.6/44.0=0.363 I just don't know other step
asked by Stephanie 
managerial economics
Exercise 1 The marketing manager has estimated the company’s demand curve with the equation P=3000 – 40Q. To develop a deeper understanding of pricing and quantity to be produced, complete the following analyses: 1. Draw the demand curve (use a range
asked by Butter 
Calc..Help Please
A model for the length of daylight (in hours) in Philadelphia on the t th day of the year is L(t)= 12+2.8 sin[2pi/365(t80)] Use this model to compare how the number of hours of daylight is increasing in Philadelphia on March 21 and May 21. (Assume there
asked by Nurcan 
Physical Science
How do you write the chemical equation for neutralization of nitric acid, HNO3, with magnesium hydroxide, Mg (OH)2, first with spectator ions and then without spectator ions?
asked by Holly 
Chemistry
Consider the reaction below. 3 O2(g) > 2 O3(g) At 175°C and a pressure of 128 torr, an equilibrium mixture of O2 and O3 has a density of 0.168 g/L. Calculate the Kp for the above reaction of 175°C
asked by Elizabeth 
history
2. In what ways can the progressive educational movement be used to exemplify issues that are important to historians of other social and political movements? Was the progressive educational movement a "typical" social or political movement?
asked by froget76 
chemistry
2L of 6M HCl
asked by cindy 
physics
A waterskier lets go of the tow rope upon leaving the end of a jump ramp at a speed of v1 = 14.7 m/s. the skier has a speed of v2 = 12.7 m/s at the highest point of the jump. Ignoring air resistance, determine the skier's height H above the top of the
asked by Sam 
chemistry
How many iron atoms are in 0.32 mol of Fe2O3
asked by Ana 
chemistry
While trace impurities of iron and chromium in natural corundum form the gemstones ruby and sapphire, they are basically a binary compound of aluminum and oxygen, with 52.9% Al. Find the empirical formula and give the chemical name for corundum. the answer
asked by minnie 
CHEMISTRY
Find the amount of CuSO4.5H2O needed to prepare 500 mL of 0.25 M solution.
asked by Sarah 
Chemistry
Ba(NO3)2 is added (BaCrO4 (s) is less soluble than BaCr2O7 (S)) provide an explanation Thank You
asked by Anonymous 
math finite
Assume that there are 7 different issues of Newsweek, 8 different issues of Time, and 4 different issues of Sports Illustrated, including the December 1st issue, on the rack. You choose 4 of them at random. (1) What is the probability that you choose 2
asked by victoria 
earth
A satellite 200 miles above the earth is orbiting the earth once every 6 hours. How long, in hours, does it take the satellite to travel 8,400 miles? (Assume the radius of the earth is 4,000 miles.) Give your answer both as an exact value and an
asked by Anonymous 
Chemistry
So, they give me a word equation, where I am suppose to try and create a balanced equation for it. Ammonium phosphate and barium hydroxide react to form ammonium hydroxide and barium phosphate. 2(NH4)3PO4 + 3BaOH2 → 6NH4OH + Ba3(PO4)2 [I was thinking
asked by Matthew 
Physics
A penny is placed at the outer edge of a disk (radius = 0.159 m) that rotates about an axis perpendicular to the plane of the disk at its center. The period of the rotation is 1.50 s. Find the minimum coefficient of friction necessary to allow the penny to
asked by Jessica 
Chemistry(Please check)
The decomposition of an aldehyde solution in carbon tetrachloride is a first order reaction with a rate constant of 1.20 x 103 minl. If we start with [aldehyde] = 0.0500 molar, what will the concentration be 150 minutes later? 1.20e3(150) = 0.18
asked by Hannah 
Chemistry
For the reaction below at a certain temperature, it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2] = 0.0500 M, [F2] = 0.0100 M, and [HF] = 0.400 M. If 0.340 mol of F2 is added to this equilibrium mixture, calculate the
asked by Elizabeth 
science
Consider the following reaction: CH3X + Y > CH3Y + X At 25ºC, the following two experiments were run, yielding the following data: Experiment 1: [Y]0 = 3.0 M [CH3X] Time (hr) 7.08 x 103 M 1.0 4.52 x 103 M 1.5 2.23 x 103 M 2.3 4.76 x 104 M 4.0 8.44 x
asked by Mariel 
Chemistry
For the reaction given below, the frequency factor A is 8.7 multiplied by 1012 s1 and the activation energy is 63 kJ/mol. NO(g) + O3(g) NO2(g) + O2(g) What is the rate constant for the reaction at 55°C?
asked by Tanyo 
Math
An electronic store receives a shipment of 30 graphing calculators, including 6 that are defective. Four of these calculators are selected to be sent to a local high school. How many selections can be made? How many of this selections will contain two
asked by Oshurbekova 
calculus
The average (mean) value of (1/x) over the interval 1
asked by illiana 
Math
A sensor light installed on the edge of a home can detect motion for a distance of 50ft. in front and with a range of motion of 192degree. Over what area will the sensor detect motion and become illuminated?
asked by melissa 
PHYSICS HEELLPPP!!
Many people mistakenly believe that the astronauts who orbit the Earth are "above gravity." Calculate g for space shuttle territory, 225 kilometers above the Earth's surface (dashed line in sketch). Earth's mass is 6 1024 kg, and its radius is 6.38 106 m
asked by JARED 
math  probability
Assume that there are 7 different issues of Newsweek, 8 different issues of Time, and 4 different issues of Sports Illustrated, including the December 1st issue, on the rack. You choose 4 of them at random. (1) What is the probability that you choose 2
asked by victoria 
physics
A 820{\rm kg} sports car collides into the rear end of a 2700{\rm kg} SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 3.0 {\rm m} before stopping. The police officer, estimating the coefficient of
asked by Ben 
Psychological Statistics
A researcher predicts that watching a film on institutionalization will change students’ attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about
asked by Patience 
Englishmetaphors
Is this quote a metaphor? "That's a bright direction, there's a glowing there." In context it seems like a metaphor since the direction she is looking in is not actually bright or glowing. there was a lot of text for the question but I thought it e too
asked by Joshua 
trig
The minute hand of a clock is 6 inches long. What distance does its tip move in 16 minutes?
asked by tim 
Chemistry
Consider the reaction below. 3 O2(g) > 2 O3(g) At 175°C and a pressure of 128 torr, an equilibrium mixture of O2 and O3 has a density of 0.168 g/L. Calculate the Kp for the above reaction of 175°C
asked by Andre 
MATH
Carolyn and Kim are selling lemonade this summer. It costs $0.10 to make each cup of lemonade. They are going to sell each cup of lemonade for $0.25. a. What is the total cost to make 55 cups of lemonade? Show or explain your work.$5.50 b. If they
asked by NINA 
physics
wo packages at UPS start sliding down the ramp shown in the figure. Package A has a mass of 4.50 and a coefficient of kinetic friction of 0.190. Package B has a mass of 10.5 and a coefficient of kinetic friction of 0.170.
asked by jonathan 
Jill
State the relationship of A to B (i.e. , = or can't be determined). 1. Using a 0.05 M Ag+ titrant A.VEP in titration 25mL of 0.01 M MgCl2 B.VEP in titrating 25mL of 0.01 M AlCl3 2. A 25.0mL solution contains 0.015 M NaCl and 0.010 M HCl A.VEP (Mohr)
asked by Chemistry Homework Help 
GEOMETRY
Which statement is contrapositive of the conditional: If a triangle is isosceles, then it has 2 congruent sides. 1. If a triangle does not have 2 congruent sides, then it is not isosceles. 2. If a triangle is isosceles, then it does not have 2 congruent
asked by Tyler 
physics
A 820{\rm kg} sports car collides into the rear end of a 2700{\rm kg} SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 3.0 {\rm m} before stopping. The police officer, estimating the coefficient of
asked by Ben 
programming logic
The program will accept user input to store the student's first and last name . If the name is ZZZ, then the program will end. The program will accept: a text entry for the class number (e.g., CGS 1000, COP 1000, etc.) a numeric value for the class grade a
asked by jay 
Chemistry
I need some help with some of these questions: The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name implies, it stinks! It is 58.77 percent carbon, 13.81 percent hydrogen, and 27.40 percent nitrogen. Its
asked by Matthew 
MATH
Carolyn and Kim are selling lemonade this summer. It costs $0.10 to make each cup of lemonade. They are going to sell each cup of lemonade for $0.25. What is the least number of cups of lemonade they need to sell in order to collect $10.00 more
asked by NINA 
math
Assume that the coin is flipped 10 times. What is the probability that both heads and tails occur?
asked by victoria 
physics
A roller coaster moves 200 ft horizontally and then rises 135 ft at an angle of 30 degrees above the horizontal. Next, it travels 135 ft at an angle of 40 degrees below the horizontal. Find the roller coasters displacement from its starting point to the
asked by Hunter 
physics
The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water surface, and 1.62 s later, the reflected signal is detected. How deep is the water?
asked by Anonymous 
Physics
An upward force of 35 N is applied via a string to lift a ball with a mass of 2.1 kg. (a) What is the net force acting upon the ball? (b) What is the acceleration of the ball?
asked by Mina 
math
Darius uses the shadow method to estimate the height of a flagpole. He finds that a 5 foot stick casts a 4 foot shadow. At the same time he finds that the flagpole casts a 20 foot shadow. Make sketch. Use Darius's measurements to estimate the height of the
asked by Lizette 
phys4
A 31.5kg child swings on a rope with a length of 6.26 m that is hanging from a tree. At the bottom of the swing, the child is moving at a speed of 4.2 m/s. What is the tension in the rope?
asked by opp 
GEOMETRY
If EF=3x10, FG=2x15 and EG=20, find the value of x, EF and FG.
asked by Tyler 
chem 111 lab
if a student used 12.45mL of their NaOH solution to neutralize 10.00mL of a 0.543 KHP solution, then what is the concentration of the student's NaOH solution?
asked by danielle 
Math
Big Sky Mining Company must install $1.5 million of new machinery in its' Nevada mine. It can obtain a bank loan for 100% of the purchase price, or it can lease the machinery. The lease would qualify as a guidline lease for tax purposes. Also, assume no
asked by Peaz 
phys5
A child pushes a merry goround from rest to a final angular speed of 0.44 rev/s with constant angular acceleration. In doing so, the child pushes the merrygoround 1.8 revolutions. What is the angular acceleration of the merry goround?
asked by opp 
physics
A 67.7 kg person jumps from rest off a 3.11 mhigh tower straight down into the water. Neglect air resistance during the descent. She comes to rest 1.04 m under the surface of the water. Determine the magnitude of the average force that the water exerts on
asked by Joe 
Trigonometry Check
Simplify #3: [cosxsin(90x)sinx]/[cosxcos(180x)tanx] = [cosx(sin90cosxcos90sinx)sinx]/[cosx(cos180cosx+sinx180sinx)tanx] = [cosx((1)cosx(0)sinx)sinx]/[cosx((1)cosx+(0)sinx)tanx] = [cosxcosxsinx]/[cosx+cosxtanx] = [cosx(1sinx]/[cosx(1+tanx] =
asked by Anonymous 
math
Assume that 3 digits are selected at random from the set { 2, 5, 6, 8, 9 } and are arranged in random order. What is the probability that the resulting 3digit number is less than 900?
asked by victoria 
math
Suppose that n tennis players want to play an elimination tournament. That means: they pair up, at random, for each round; if the number of players before the round begins is odd, one of them, chosen at random, sits out that round. The winners of each
asked by Hi 
Calculus
Sand is poured onto a level piece of ground at the rate of 0.25 m^3/min and forms a conical pile whose height is equal to its base diameter. How fast is the height increasing at the instant when the height is 0.50 m? V = 1/3(pi)(r^2)h I got 3/pie, is that
asked by help 
Chemistry
I need some help with some of these questions: The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name implies, it stinks! It is 58.77 percent carbon, 13.81 percent hydrogen, and 27.40 percent nitrogen. Its
asked by Matthew 
Chemistry
For the reaction given below, the frequency factor A is 8.7 multiplied by 1012 s1 and the activation energy is 63 kJ/mol. NO(g) + O3(g) NO2(g) + O2(g) What is the rate constant for the reaction at 55°C?
asked by Tanyo 
Trigonometry One Quick Question! Please help!
Triangle ABC has side lengths 7, 24, and 25. Do the side lengths form a Pythagorean triple? Explain. Thank You so much! :) I'm having a hard time understanding this so it means alot!
asked by Amaya 
English
Here is the second part of my summary I really need you to revise. Thank you. 1) Details of the behaviour, clothes and so on of the characters are part of the social setting of the story. Characters are the people who appear in a novel and represent the
asked by Henry2 
MATHS
AX is the bisector of
asked by Judah 
Chemistry
A solution is made by mixing equal masses of methanol, CH4O, and ethanol, C2H6O. Determine the mole fraction of each component to at least three significant figures
asked by Heather 
math
The Washington Monument is the tallest structure in Washington D.C. At the same time the monument casts a shadow that is about 500 feet long, a 40 foot flagpole nearby casts a shadow that is about 36 feet long. Make a sketch. Find the approximate height of
asked by Eleanna 
phys6
A cyclist starts from rest and pedals so that the wheels make 8.1 revolutions in the first 5.4 s. What is the angular acceleration of the wheels (assumed constant)?
asked by opp 
6/90 lottery Prediction
Give a formula for win6/90 lottery Prediction
asked by bazlur 
English
I left out the last sentences on "fiction". Thank you very much, Writeacher! 1) The point of view can be fixed, when the story is told from a single point of view, as in Defoe’s Robinson Crusoe, or shifting, when perspective moves from one character to
asked by Henry2 
math
nina designed an arch made of wrought iron for the top of a mall entrance. the 11 segmentsbetween the two concentric semicircles are each 3 ft long. find the total length of the wrought iron used to make this structure. round your answer to the nearest
asked by keyla 
Chemistry(Please check)
8. The halflife of a reaction was found to be inversely dependent on the concentration of the starting material. Thus, we can say that a. the reaction is zero order b.the reaction is first order c.the reaction is second order d. the reaction starts out
asked by Hannah 
calculus
d/dx(e^sinx2x)= a)cos2xe^sinx2x b)cosxe^sin2x c)2e^sin2x d)2cos2xe^sin2x e)2cos2xe^sin2x
asked by victoria 
Physics
Two blocks are positioned as shown below. block A has a mass of 15 kg and hangs on one end of a cable that passes over a frictionless and massless pulley. The other end of the pulley is attatched to block B which has a mass of 10 kg. Block B rests on an
asked by Eastern Illinois University 
English
What is the universal truth in "Oedipus the King"?
asked by Rebecca 
science
explain the significance of the negative sign in gravitational potential energy?
asked by RAYNOLD 
Physics
A 2.5 kg block of ice at a temperature of 0C and an initial speed of 5.7 m/s slides across a level floor. If 3.3*10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block id entirely converted
asked by Riley 
Chemistry(Thank you for helping)
1) Given this data in a study on how the rate of a reaction was affected by the concentration of the reactants Initial Rate, RUN # (A), M (B), M (C), M mol L1 s1 1 0.200 0.100 0.600 5.00 2 0.200 0.400 0.400 80.0 3 0.600 0.100 0.200 15.0 4 0.200 0.100
asked by Hannah 
Physics
A block is suspended from the end of a spring. An external force holds the block so that initially the spring is not stretched or compressed. When the block is released, it oscillates up and down between positions A and B. If the mass of the block is 0.5
asked by Mary 
Finance
Firm A has $10,000 in assets entirely financed with equity. Firm B also has $10,000 in assets, but these assets are financed by $5,000 in debt (with a 10 percent rate of interest) and $5,000 in equity. Both firms sell 10,000 units of output at $2.50 per
asked by Jerry 
Chemistry
1)For the reaction, A = B + C, the rate law is k(A). If it takes 80.0 seconds for 70.0% of a 10.0 gram sample of A to be transformed into products, what is the value of the rate constant? I was going to do 80/10 = 8 and then 8 times .70 but im not sure
asked by Hannah 
chemistry solubility
hydrocarbons nhexane, cyclohexane, and toluene are are insoluable in H2O (i assume because the hydrocarbons are non polar and water is polar) but why are these three hydrocarbons soluable in CH2Cl2?
asked by john 
English
I urgently need you to check this summary I wrote on "fiction". I'm sending it into two separate posts. Thank you very much, writeacher!! 1) The setting is the time and place in which the action of a book happens. The setting can reveal a great deal about
asked by Henry2 
Chemistry
At a particular temperature, K = 2.0 106 mol/L for the following reaction. 2 CO2(g) 2 CO(g) + O2(g) If 1.8 mol CO2 is initially placed into a 5.9L vessel, calculate the equilibrium concentrations of all species.
asked by Elizabeth 
Physics
A penny is placed at the outer edge of a disk (radius = 0.159 m) that rotates about an axis perpendicular to the plane of the disk at its center. The period of the rotation is 1.50 s. Find the minimum coefficient of friction necessary to allow the penny to
asked by Jessica 
statistics
Among coffee drinkers, men drink a mean of 2.8 cups per day with a standard deviation of 0.5 cups. Assume the number of drinking per day follows a normal distribution. What proportion drink 3 cups per day or more?
asked by Bri 
chemistry
While trace impurities of iron and chromium in natural corundum form the gemstones ruby and sapphire, they are basically a binary compound of aluminum and oxygen, with 52.9% Al. Find the empirical formula and give the chemical name for corundum. i really
asked by minnie 
math
the mean teaching hours for a full time faculty at a university is 8 hours per week what does this tell you about the typical teaching hours for a full time faculty at that university
asked by Anonymous 
Social studies
I really need help on this, please! I've been reading my book for an hour and found no answer. Ok so here it is: Sumer lacked resources such as ... I have to list three resources that Sumer lacked. Please help. Thanks !
asked by Elaina 
chemistry
In a lab experiment I added Br2 to hydrocarbons cyclohexane, cyclohexene, and toluene. A loss of color would indicate a reaction took place. Only the cyclohexene lost color and turned clear. I guess this means that the Br2 broke the cyclohexenes double
asked by john 
English
Thank you very much. Here is a summary I need to prepare for tomorrow. I also need to rephrase the last sentence. Thank you very much, Writeacher! 1) Though Craig Jones is an office worker, he is also a talented singer who dreams of becoming a star. 2) He
asked by Henry2 
math
according to a survey of 800 students, about 3/4 of them chose pizza as their favorite food. Of those who chose pizza, 1/2 liked pepperoni topping the best. How many students liked pepperoni topping the best?
asked by Anonymous 
micro econ
Suppose that through laziness and/or sheer stupidity, Densa Inc. always falls 10 percent short of producing the profitmaximizing output. Would higher product price lead to greater output? Does this result suggest why economists are not overly concerened
asked by Daca 
Math 12
Simplify #1: cscx(sin^2x+cos^2xtanx)/sinx+cosx = cscx((1)tanx)/sinx+cosx = cscxtanx/sinx+cosx Is the correct answer cscxtanx/sinx+cosx? Simplify #2: sin2x/1+cos2X = ??? I'm stuck on this one. I don't know what I should do. Simplify #3:
asked by Anonymous 
calculus
A 33 by 33 square piece of cardboard is to be made into a box by cutting out equal square corners from each side of the square. What size corners should be cut out so that the volume of the box is maximized?
asked by james 
Rounding to the nearest cent
What is $350.812 to the nearest cent? Is it a) $350.800 b) $350.812 c) $350.81 d) $350.82 e) None of the above
asked by Anonymous 
Math
A satellite in a circular orbit 879.4 mi above the earth makes one complete orbit every 83.42min. What is its linear velocity? Use 3963 mi for the length of the radius of the earth.
asked by andrea 
chemistry
calculate the mass in kilograms of 3.99 liters of acetic acid. the density if 1.05g/ml.
asked by Anonymous 
statistics
f someone scored two Standard Deviations above the Mean on a standardized test where the Mean = 100 and the Standard Deviation = 15, then that person’s numerical score would be…? A. 125 B. 130 C. 160 D. 90th Percentile
asked by Annie 
Chemisty
A total of 31.3 ml of 0.15 N NaOH was required to reach a phenolphthalein endpoint in titrating 6.00 g of vinegar. Calculate the number of equivalents of acetic acid in vinegar.
asked by Eliazbeth 
math variation ques
The price, $C, of printing n copies of a book is partly constant and varies partly as n. The selling price of each copy of the book is fixed as $b. If 630 copies were printed and sold, there would be a loss of 10%. If 980 copies were printed and sold,
asked by Help! 
Physics
An upward force of 35 N is applied via a string to lift a ball with a mass of 2.1 kg. (a) What is the net force acting upon the ball? magnitude 1 N direction 2 Select upward downward (b) What is the acceleration of the ball? magnitude 3 m/s2
asked by Mina 
physics
A 6kg cat is running across a table which is 1.2 m tall. The kinetic energy of the cat is 48 j. A) how fast is the cat running? B) what is the potential energy of the cat? C) what is the total mechanical energy of the cat?
asked by Shelby 
physics
A diver has a mass of 75 kg takes part in a competition by having to perform 10 dives off the 10m platform above the water. Before he takes part he snacks on an energy bar (150 g) which provides 15 kj of energy. How many would the diver need to consume to
asked by william 
physic
calculate the attractive force between earth and sun. Neglect the radii, D= 1.50X10
asked by Anonymous 
Math
The number f water hyacinth plants growing on a lake increases exponentially with time. On Tuesday the number of plants is 150. That Friday the number has risen to 240. If it takes 3400 plants to completely cover the lake, will the lake be completely
asked by Billy 
algeebra
Determine wether the two expressions are equivalent. If so,tell what property is applied. If not explain why. 1) 9 x 1 and 9. Is this expression equivalent because 9 x 1=9 and also 1 x 9=9.this would be an example of an communitive property. 2) 7 x 3 and 3
asked by Phoebe 
Chemistry
Calucluate the pH of 100 mL of buffer that is 0.075 M NH4Cl and 0.175 M NH3 before and after the addition of 1.00 mL of 5.05 M HNO3 I have no idea where to even start. HELP!
asked by Katie 
English  Ms. Sue
Hi Ms. Sue I’m Aaron and I’m Mohammad’s friend, I helped Mohammad edit his, and I’m also doing a theme on the story “A few notes for Orpheus” and could gladly use your help. As Mohammad had pointed out before that the title is a musical tribute
asked by Aaron 
Chidren,Families,and Society
Larry is a very aggressive fouryearold child.he watches many television programs that contain violence.it's most likely that
asked by annie 
language arts
choose which metaphor, melting pot or salad bowl, you think is best for the united states and explain why. I said melting pot because:  people from different cultures marry and have children  people from different cultures assimilate into our country 
asked by SoccerStar 
physics
A 61.7 kg person jumps from rest off a 2.98 mhigh tower straight down into the water. Neglect air resistance during the descent. She comes to rest 1.19 m under the surface of the water. Determine the magnitude of the average force that the water exerts on
asked by nick 
world history
The Marshall Plan was enacted to support a U.S. foreign policy to keep communism from spreading, also known as
asked by Anonymous 
chemistry
using a litmus paper only,how would you distinguish between HN4 and NaCl
asked by faith 
math
If A varies inversely as the square of B and A=25 when B=1/5.Find B when A=49
asked by Bose 
physics
A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed, 1.84 m/s. What is the average power of the elevator motor during this period? What is the power of the elevator motor during an
asked by Tom 
FInite Math
.30x+.20y +.25z =0 .20x .40y +.05z =0 .10x +.20y .30z =0 x=? y=? z=?
asked by Exhausted 
trig
evaluate tan(51 degree 15')+cot(25 degrees 18')
asked by Anonymous 
Chemistry
I had to perform an experiment for the freezing point depression in which we had to determine the frezzing points of water as a pure solvent, sodium chloride, sucrose, and ethylene glycol. We had to work with a partner so I completed the experiment for
asked by Hannah 
Chemistry
For the reaction, 2 XO + O2 = 2 X02, some data obtained from measurement of the initial rate of reaction at varying concentrations are given below. run # [XO] [O2] rate, mol Llsl 1 0.010 0.010 2.5 2 0.010 0.020 5.0 3 0.030 0.020 45.0 The rate law is
asked by Hannah 
math
arrange fraction from least to greatest 6/7 7/8 4/5 9/12
asked by vea martinez 
Psychology
What is a number one reason for me as student majoring in psychology to learning about experimental and non experimental research involving psychology?
asked by Sharon 
math
i have a 36 in. wide by 18 in. length by 20 in high rectangular aquarium that needs to be filled. i have a 12 in high cylindrical bucket with a 12 in diameter to fill the tank. if the aquarium contains 3 in of gravel and the bucket is to be filled to a
asked by mikey 
Chemistry(Please help,thank you)
I have to find the calculation of Van't Hoff factor "i" for NaCl and sucrose. The directions say to use the equation delta Tf = kf X m X i and to use Kf for water = 1.86C/m So I have the molality of NaCl and sucrose as well as delta Tf so for NaCl I
asked by Hannah 
Math
a special rubber ball is dropped from the top of a wall that is 64 feet high. each time the ball bounces it rises half as high as the distance it fell. The ball is caught when it bounces 1foot high. how many times did the ball bounce?
asked by Jewell 
Physics
At about 51.2 meters/sec, a falling parachuter (before the parachute opens) no longer accelerates. Air friction opposes acceleration. Although the effect of air friction begins gradually, imagine that the parachuter is free falling until terminal velocity
asked by Anonymous 
Physics
On June 9, 1988, Sergei Bubka broke the world polevaulting record for the 8th time in four years by attaining a height of 6.14 m. How long was Bubka in the air for this record setting vault?
asked by Anonymous 
English
Are "Once upon a greek stage" and "Oedipus the King" the same story"?
asked by Rebecca 
Chemistry(Please help)
I need to calculate the molecular mass of ehtylene glycol based on the freezing point depression. The teacher said that for glycol i=1 and to use the equation m=delta T / Kf X i Kf = 1.86C/m so I did 2.5C / 1.86 X 1 = 1.344 I know that 1.344 can't be
asked by Hannah 
English
Could you please check this dialogue and tell me if the expressions are commonly used in American English? Would you have written them differently= 1.How are things with you? Any news? 2.We’ve moved house. 3.Where did you move to? 4.We moved to Villiers
asked by Henry2 
Math
A wheel with radius 4 cm is being pushed up a ramp at a rate of 8 cm per second. The ramp is 760 cm long, and 250 cm tall at the end. How far does thw wheel Traveling at 8 cm/sec.How long does it take the wheel to complete one rotation. What is the initial
asked by Anonymous 
Calc
At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 19 knots and ship B is sailing north at 20 knots. How fast (in knots) is the distance between the ships changing at 7 PM? i really don't have any idea what to do...
asked by UCI Student 
science
why gas has no effect on wet litmus paper
asked by brefo 
business
47. Idol Company has developed standards for the materials required to produce a single unit of Model IWIN: 25 pounds of Supreme at $130.00 per pound Last month, Idol purchased 490,000 pounds of Supreme at a total cost of $61,250,000. Idol used 482,000
asked by chunky 
GEOMETRY
Find the value of y if B is midpt of AC, and C is midpt of BD. AB=7y2 BC=x+3 CD=9
asked by Lauren 
Chemistry
What does Ca^(2+) + Na2CO3 create? What does Ba^(2+) + Na2CO3 create? What does Ba^(2+) + Na2CrO4 create? Thank You
asked by Wally 
business 110
I am taking a business class and I cant find an aswser for this question can someone help? Cory is at the top of her companys organization chart. Which of the following is most likely to be her job title? Choose one answer. a. executive manager b.
asked by sharon 
English
Here is the second part of the rephrase. Thank you very much, Writeacher! 1) Mr. B. charges her with overreacting and, by way of giving her some more substantial grounds for anguish, invites her to sit on his knee. As a matter of fact, Mr B attempts to
asked by Henry2 
percentage
35%of the number of books Vick owns are fiction books.if Vick has 70 fiction books,find: A) the total numbe of books he owns. B) the number of nonfiction books he owns
asked by Kimi 
percentage
Chitra used wheat flour&plain flour to bake some cakes.19%of the flour used was wheat flour.if she used 475g of flour,find: A) the total mass of flour she used for the cakes B) the mass of plain flour she used
asked by Kimi 
math
how to find the volume when two figures are used?
asked by Pat 
Economics
3.The Theory of the Firm document, the Friedman article, and the information in chapter 4 argue that the main goal of a firm in a market economy is to maximize profit (shareholder wealth) over the long term. However, SEC regulations require U.S.
asked by Anonymous 
calculus
let f be the function given by f(x)=(3x^3/e^x). for what value of x is the slope of the line tangent to f equal to 1.024? a)9.004 b)4.734 c)1.029 d)1.277 e)4.797
asked by victoria 
math
For this problem, assume that you are to pick 3 cars from the motor pool, which contains 6 subcompact cars, 6 compact cars, and 5 midsize cars. How many ways can you pick the cars so not all are the same size?
asked by victoria 
physAH!
A car that is initially at rest moves along a circular path with a constant tangential acceleration component of 2.07 m/s2. The circular path has a radius of 42.4 m. The initial position of the car is at the far west location on the circle and the initial
asked by opp 
English
Writeacher, I urgently need to rephrase these questions. I didn't want to repeat exactly the same questions but the answers, of course, must be the same. Can you help me rephrase them? 1) How was Elizabethan theatre structured? Focus your attention on the
asked by Henry2 
lab
A total of 31.3 ml of 0.15 N NaOH was required to reach a phenolphthalein endpoint in titrating 6.00 g of vinegar. Calculate the number of equivalents of acetic acid in vinegar.
asked by Eliazbeth 
FInite Math
.30x+.20y +.25z =0 .20x .40y +.05z =0 .10x +.20y .30z =0 x=? y=? z=?
asked by Exhausted 
English LitPlease help
We had to read An Essay on Criticism by Alexander pope and answers some questins. I spent my weekend trying to figure out one of the questionsCould someone please help "Those Rules of old discover'd, not devis'd Are Nature still, but Nature Medthodiz'd
asked by Jody 
Physics
Two blocks are positioned as shown below. block A has a mass of 15 kg and hangs on one end of a cable that passes over a frictionless and massless pulley. The other end of the pulley is attatched to block B which has a mass of 10 kg. Block B rests on an
asked by Eastern Illinois University 
physics
A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed, 1.84 m/s. What is the average power of the elevator motor during this period? What is the power of the elevator motor during an
asked by Harry 
geometry
Joe's living room is a rectangle and measures 15 ft by 27 ft. Using a scale of 1 in. = 3ft. How could I sketch it and show both the actual measurements and the scale measurements
asked by snoop 
English
I urgently need to check this paragraph. Can you help me, Writeacher? 1) St. Valentine's Day is the feast's day of the Patron Saint of love called St. Valentine. He was priest in the third century in Rome. 2) He was killed because Emperor Claudius II said
asked by Henry2 
math
Factor the trinomial: 5x+7x6
asked by Metilet 
scottsdale CC
During a 5.00 s interval, a particle’s coordinates change from x =10.0 m, y =5.00 m to x =30.0 m, y = 5.00 m. Assuming the particle’s velocity is constant, what will its coordinates be at the end of the next 5.00 s interval?
asked by juan 
physics
With brakes fully applied, a 1660 kg car decelerates from a speed of 74.0 km/hr. What is the work done by the braking force in bringing the car to a stop? What is the change in the kinetic energy of the car?
asked by Katie 
math
Assume that the playbook contains 10 passing plays and 12 running plays. The coach randomly selects 8 plays from the playbook. What is the probability that the coach selects at least 3 passing plays and at least 2 running plays?
asked by victoria 
Psychology
Sally is driving her car and talking on her cell phone. Statistically this behavior has been shown to be quite dangerous and contributes to many automobile accidents. In performing these two tasks simultaneously, Sally uses: a. conscious cognitive
asked by T 
English
I would like to know if this grammatically correct. When there is change in reactant, product, and temperature the equilibrium position will shift in a direction that tends to decrease that change in situations. When the concentration of one of the
asked by Anonymous 
PHYSICS
A solid disk with a mass of 100kg and a radius of 0.2m, turns clockwise through an angular displacement 10 rad when starting from rest to attain its maximum angular speed, of 1 revolution every 0.5s. What is the angular acceleration that the wheel
asked by Brittany 
Algebra 2
You are cooking chili. When you take it off the stove, it has a temperature of 205°F. The room temperature is 68°F and the cooling rate of the chili is r = 0.03. How long will it take to cool to a serving temperature of 95°F
asked by Erin 
Precalculus
find roots of w^(4)+2^(3)+3^(2)+4w52=0
asked by Sam 
geometry
Which of the following does not always bisect at least one side? Mid segment,Perpendicular bisector, Median,Altitude
asked by hilary 
Chemistry
Calculate the freezing point depression of an aqueous solution prepared by mixing 22.0 g C6H12O6, with 600 ml of water
asked by Kristen 
scottsdale CC
Let s ct 3 , where c 1.0 m/s 3 . Compute the average speed over the time intervals t1 1.0 10 1 s, t2 1.0 10 2 s, and t3 1.0 10 3 s, with all time intervals starting at the time t 1.0000 s. What is the instantaneous speed at t 1.0000 s
asked by juan 
physics
A car of mass 907 kg coasts on a level road, starting with an initial speed of 14.2 m/s and coming to rest 15.2 s later. Find the frictional force acting on the car.
asked by Brett 
physics
Abel flicks a 20g marble at a speed of 0.5 m/s. It has one dimensional collision with a 10g bouncy ball, that was initially at rest. After they collide, the bouncy balls speed is 0.5 m/s. What is the marbles postcollision speed? Show whether or not any
asked by Hunter 
Algebra 208
Cost of Tuition In 2000, the average cost of tuition and fees at private fouryear colleges was $16,200, and in 2005 it was $20,100. Sketch a line that passes through the points (2000, 16200) and (2005, 20100).
asked by Wanda 
law
Identify and analyze the different crimes for which students are most at risk for in K12, include some of the differences in victimization found across elementary, middle school, high schools, and college. Provide reasons why you think these crimes occur
asked by sharday 
English attribution help
i don't know how i would set up the attribution for this fact. i got it from a pdf file online called Women in Prison and Children of Imprisoned Mothers Series this is the quote “Children should be consulted in determining the extent and type of
asked by taylor 
6th grade math
3 kids can buy a hot lunch salad bar or bring from home. On a slip of paper they each write a number 1,2, Or 3. They add the sum to find the total. If te sum is 3,4, or 5 they buy a hot lunch if it is 6 or 7 they buy a salad bar if the sum is 8 or 9 they
asked by KAITLIN. 
chem
Is this the correct equatioin for the reaction of cyclohexene with MnO4 ? C6H10 + MnO4 > C6H10(OH)2 + MnO2
asked by aly 
phys2
Grace is playing with her dolls and decides to give them a ride on a merrygoround. She places one of them on an old record player turntable and sets the angular speed at 45.0 rpm. (a) What is their angular speed in rad/s? 1 Correct: Your answer is
asked by opp 
chemistry
how can H2O and ethanol be separated
asked by faith 
Chemistry
For the reaction, 2 XO + O2 = 2 X02, some data obtained from measurement of the initial rate of reaction at varying concentrations are given below. run # [XO] [O2] rate, mol Llsl 1 0.010 0.010 2.5 2 0.010 0.020 5.0 3 0.030 0.020 45.0 The rate law is
asked by Hannah 
Math
Transform: log3^4= log(3/4)=
asked by Harry 
english
i need help in forming these into good sentences ty 1. Microorganisms call soil their home as well, a single ounce of soil can contain over 100 million microorganisms. 2 mycelium makes dirt and The mycelium is usually hidden in the soil, in wood, or
asked by English2ndlenguahe 
calculus
find f'(x) 4x^2 lnx
asked by carlton 
physics please help
A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed, 1.84 m/s. What is the average power of the elevator motor during this period? What is the power of the elevator motor during an
asked by Riley 
Eng. Essay  Writeacher
Writeacher or Bobpursley, or anyone who could help me with my essay. I don't know why I cannot find the post that I needed help on, my essay was on traditional families versus TV show families. I included more information. I wish I could include the link
asked by Farrell 
math
Rules:Determine wether the two expressions are equivalent.If so,tell what property is applied.If not, explain why. 1)18 x 1 and 18 2)7 + 0 and 7 3)0 + 12 and 0 can someone please explain to me why these expressions are not equivalent. I know that these are
asked by casey 
Statistics homework distribution problem?
i need help with how to solve this: consider a normal distribution with mean 30 and standard deviation 2. what is the probability a value selected at random from this distribution is greater than 30? the book gives me the answer but i need to know how to
asked by jess 
Geometry
The small pipe has a radius of 18 feet and a height of 21 feet while the large pipe has a height of 28 feet. What is the volume of the large pipe in terms of π? Answer A. 5,376π ft3 B. 6,804π ft3 C. 16,128π ft3 D. 18,432π ft3
asked by Anonymous 
math
sin^2x+sin^2tan^2x=tan^2x
asked by becca 
physics
A speeder traveling at 47 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 2.59 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder?
asked by r 
Math
On Tuseday, Grace's Flower Shop sold 124 flowers. At the end of the day, there were 237 flowers left in the shop. What was the total number of flowers in the shop at the beginning of the day?
asked by Anonymous 
Ground School
What is the best way for me to learn more about airport operations??
asked by Caleb 
Physics
A crane is holding a bloc of metal of 10 000kg. If the crane's arm weights 1000kg and is 10,0m long, what is the tension in cable a and how big is the force exerted on the pivot of the cranes arm. the cable passes through the top of the cranes arm and then
asked by Raf 
math
Anne and Nancy use a metal alloy that is 23.5% copper to make jewelry. How many ounces of a 21% alloy must be mixed with a 30% alloy to form 108 ounces of the desired alloy?
asked by sakena 
calculus
if the derivative of f is f'(x)=ln(x^2+1)2, at which of the following values of x does f have an abslolute value? a)2.53 b)0 c)2.72 d)4.44 e)1.72
asked by gracie 
Piloting: stumped
What do I do when, after I have completed the testing and want to go on in my field and am stuck without knowledge because I hadn't learned the subject before. I have all of the materials and tools and have gone over it before but I can't seem to find the
asked by Lane 
English
Writeacher, I urgently need to rephrase Shakespeare's sonnet "When I do Count the Clock that Tells the Time". The rephrase must be simple and straightforward. Can you recommend a website? Thank you very much!!!
asked by Henry2 
physics
The efficiency of a pulley system is 81 percent. The pulleys are used to raise a mass of 85 kg to a height of 8.5 m. The acceleration of gravity is 9.81 m/s^2. What force is exerted on the rope of the pulley system if the rope is pulled for 14 m in order
asked by Anonymous 
Physics
On June 9, 1988, Sergei Bubka broke the world polevaulting record for the 8th time in four years by attaining a height of 6.14 m. How long did it take him to fall?
asked by Anonymous 
algebra
Could someone look over this paper before I turn it in? Thanks Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people
asked by Debbie 
Psychology
Hi i need help with 2 practice questions 1. Just as _____ can strengthen social identity, ______ can reduce conflict between "us" and "them" a. competition; anonymity b. interdependence; cooperation c. individualism; interdependence d. competition;
asked by Terry 
biology
Which nutrient functions BOTH as an enzymatic cofactor and as a stabilizer of ribosomes and nucleic acids? a) potassium b) phosphorus c) calcium d) Magnesium Thanks for your help!!
asked by tom 
Physics
A baseball is thrown vertically upward (assumed to be the positive direction) with a speed of 19.3 m/s from a height of 1.18 m. How high does the ball rise from its original position?
asked by Anonymous 
Chemistry
how does the cobalt chloride equilibrium respond? CoCl2 + AgNO3
asked by Zu 
math
if z(t) = 60 * 1.03^t, find t when z(t) = 144
asked by Bobby 
health
how does the american medical association describe the diease of alcoholism and drug dependence? explain what these terms mean
asked by michael 
social studies
how would I illustrate the ninth amendment?
asked by SoccerStar 
physics
A satellite moves on a circular earth orbit that has a radius of 6.68E+6 m. A model airplane is flying on a 16.3 m guideline in a horizontal circle. The guideline is nearly parallel to the ground. Find the speed of the plane such that the plane and the
asked by Katie 
English Journey Assessment Task
WHAT IS IT? Speech on the ways the concept of JOURNEY is expressed throughout Rabbit Proof Fence and two other related texts of your choosing PLUS a typed transcript of that speech. Focus Area: What are the messages / ideas continued within the texts about
asked by Jayden 
math
solve the elimination method for 3x+7y=32 7x+3y=8
asked by felicia 
math
The total area of the dog park fence is 90 feet. The play pen is 6 by 10 in feet. How wide is the distance between the play pen and the fence?
asked by osha 
physics
A 6kg cat is running across a table which is 1.2 m tall. The kinetic energy of the cat is 48 j. A) how fast is the cat running? B) what is the potential energy of the cat? C) what is the total mechanical energy of the cat?
asked by Shelby 
Calculus
If it takes 90N to stretch a spring 1/2 m beyond equilibrium, use an integral to find how much Work it takes to stretch the spring 5m beyond equilibrium
asked by Jackie 
algebra
Which set of ordered pairs represents a function from P to Q? P={5, 10, 15, 20} Q={2,0,2}
asked by missy 
Chemistry
One liter of Saline solution is prepared by dissolving 25.0 g NaCl in water. Find the molarity of this solution.
asked by Kristen 
college algebra
t(x)=2x^21, Find t(2/3)
asked by missy 
chemistry
what does it mean to draw the chemical structure of dichloromethane? does this just mean the 2d structure?
asked by lara 
Algebra 2
You are cooking chili. When you take it off the stove, it has a temperature of 205°F. The room temperature is 68°F and the cooling rate of the chili is r = 0.03. How long will it take to cool to a serving temperature of 95°F
asked by Me 
phys1
A carnival swing is fixed on the end of an 7.6mlong beam. If the swing and beam sweep through an angle of 130°, what is the distance through which the riders move?
asked by jm 
English ms. sue
ms. sue one my really good english friend also writing essay on theme of a few notes for orpheus u please be able to help him also get 100 words? he be able to post new question?
asked by Mohammad 
ENGLISH LITERATURE
In HOPE LESLIE, the theme of captivity is prevalent.. How is it portrayed in the novel with the major characters (Hope, Magawisca and Everell) getting captured?ALSO, in what ways is Sedgwick AGAINST the captivity theme?Any pointers or ideas will help me in
asked by Danah 
math
the diving club offers 4 beginning diving classes each day . each class has room for 6 people . how many people can take classes in 30 days ?
asked by ahoids 
scottsdale CC
During a 5.00 s interval, a particle’s coordinates change from x =10.0 m, y =5.00 m to x =30.0 m, y = 5.00 m. Assuming the particle’s velocity is constant, what will its coordinates be at the end of the next 5.00 s interval?
asked by juan 
calculus
what is the derivative of 3x1/2x^26
asked by Michael 
Cross country running
How does one deal with another runners joy after getting sufficiently skunked? In other words, Can I get some tips on how to be a good sport when I get creamed during a race?
asked by Lydia 
Psychology
Hi i need help with 2 practice questions 1. Just as _____ can strengthen social identity, ______ can reduce conflict between "us" and "them" a. competition; anonymity b. interdependence; cooperation c. individualism; interdependence d. competition;
asked by Terry 
English
I considered the website you suggested to me but I find it difficult to rewrite it in prose. I simply varied all the instances of “I” with “he” , that is the poet, but I don’t know how to simplify it and how to vary “you”, “your”. Please
asked by Henry2 
chemistry
Which compound is more polar: water or dicloromethane? I know that water is a polar molecule but I don't know the polarity of dicloromethane or how to figure out which one is more polar than the other?
asked by lara 
Biology
Most frog species have a distinct tadpole life stage. However, microhylids of Australia and New Guinea do not have a tadpole stage, but tadpole features appear and disappear during development in the eggs. This shows that A) microhylids need to be very
asked by Connan 
Calc
Use implicit differentiation to find the slope of the tangent line to the curve y/(x2y) = y^3 +9 (1,10/21) ive done this problem around 10 times and i still cant get it.... when i did it the last time i got 9y^3/ 3y^2 x  8y^3  19 and the slope around
asked by SOMEONE PLEASE HELP 
trig
Since cot x = cos x / sin x, if cot x = 1/2, with the angle x in the first quadrant, then cos x = 1 and sin x = 2 (1) State true or false. Is this a possible situation? (2) If false, explain why.
asked by Anonymous 
chemistry
how can sand and iodine crystals be separated
asked by faith 
Animal Science
what time of the year do feral cats usually mate?
asked by Sam 
english103  Writeacher
Ms. Writeacher, I worked on my thesis a bit, please tell me what you think on my thesis, intro, and outline. It's only going to be a 34 page paper. Assignment instructions were in my other posts. Thank you!!! I’d like to define the traditional family
asked by Farrell 
Psychology
1. To sustain a learned response in someone, it is best for you to reinforce it: a. continuously b. intermittently c. intermittenly at first, then continuously d. at the first sign of spontaneous recovery. I chose B. 2. In his famous obedience study,
asked by Terry 
Psychology
Hello all I need some help with couple questions as a refresher. 1. which of the following statements about the gatecontrol theory is TRUE? a. Pain impulses create a gate leading to the brain. b. the brain is capable of generating pain on its own. c. the
asked by Terry 
Psychology
1. Activationsynthesis dream theory purports that dreams result from the brain's effort to make sense of: a. the days activities and experiences b. problems the person has not yet resolved c. our external world d. spontaneously firing neurons during REM
asked by Tubbz 
Psychology
1. The majority of psychologists are electric, which means they draw information from different schools of thought rather than limiting themselves to information gained from only one perspective. However, most psychologists agree that it's important to: a.
asked by Tubbz 
health
What is a restitution in a health question
asked by john cartey 
physics
Two resistors connected in series have an equivalent resistance of 790.6 . When they are connected in parallel, their equivalent resistance is 170.2 . Find the resistance of each resistor. (small value) (large value)
asked by Anonymous 
math
A varies directly as x and B is inversely proportional to x^2. Given that y= A+B and that y= 19 when x=2 or 3, express y in terms of x.
asked by YOY 
chemistry
I tested the conductivity for two salts (NaCl and MgCl2) and I noticed that Nacl conducted more electricity. Why?
asked by chemistry1 
english
drunk driving paper
asked by Anonymous 
Ground School
I am taking a ground school class for my private pilot license and am having trouble with weather, what is the best way to go about learning this stuff????
asked by Fred 
physics
A ball is thrown at a rate of 25m/s. The ball travels 138 meters. How long does it take the ball from start to end?
asked by jorge 
math
Assume that you are to pick 3 cars from the motor pool, which contains 6 subcompact cars, 6 compact cars, and 5 midsize cars. How many ways can you pick the cars so not all are the same size?
asked by victoria 
Chemistry
Compare the natural chemistry that takes place in the environment with the chemistry that takes place due to manmade factors like pollution. Discuss the effect of pollution at the local, regional, national, and global level.
asked by Jenn 
Chemistry
had to perform an experiment for the freezing point depression in which we had to determine the frezzing points of water as a pure solvent, sodium chloride, sucrose, and ethylene glycol. We had to work with a partner so I completed the experiment for
asked by Hannah 
accounting
compute the working capital, current ratio, and quick ratio after each transaction for boole company
asked by dre 
Algebra
Factor the trinomal: 3a^213a+4
asked by He Belongs With Me. :/ 
biology
Regulation of an enzyme's activity occurs a) before the enzyme is produced b) during the production of the enzyme. c) when the enzyme already exists in the cell. d) at any point on the enzymatic production pathway. Thank you
asked by chris 
economica
what is an economic problem with welfare? this has to be in the form of a thesis, and my essay should be about how to solve it.
asked by Anonymous 
business
Choose one of the following topics with which you have had experience: o Hiring o Performance evaluations o Discipline o Termination o Diversity o Harassment o Manager as a role model • Write a 1,050 to 1,400word paper addressing the following points:
asked by Anonymous 
Ground School: airport operations
What is the best way for me to learn more about airport operations??
asked by Fred 
Geometry
Is it always possible to find a circle that passes through four noncollinear points?
asked by Anonymous 
math
Money paid to a worker as a reward for good service is called
asked by Anonymous 
ETH/125
Is Cuba colonized or if it immigrated to the US, did Cuba face prejudice, segregation, racism, or any combination of the three? if so, how and why? Was Cuba affected by any of the folowing forms ofdiscrimination, or did it participate in any of the
asked by Tica 
physics
When a .90 kg object is attached to a vertically supported spring, it stretches .15 m from the equilibrium position. Find k for the spring.
asked by Andreas 
english
Bee balm, coneflowers, and blackeyed Susans, brightly colored flowers with darker bulbous centers, contrast beautifully when planted together.
asked by Anonymous 
Math
Include an explanation. Factor the trinomal: 3a^213a+4
asked by He Belongs With Me. :/ 
calculus
integral of 5 to 0 (dx/(sqrt(1+3x))= a)4 b)(8/3) c)2 d)(16/9) e)1
asked by gracie 
Psychology
The majority of psychologists are electric, which means they draw information from different schools of thought rather than limiting themselves to information gained from only one perspective. However, most psychologists agree that it's important to: a.
asked by T 
Math
if h(t) = 17.4 * 1.23^1, find h(13)
asked by Jake 
math
1. An airplane travels 720 mi/hr. How far will it travel in 2 hrs? 2. A ball rolls across a floor at 5 meters per sec. How long will it take for the ball to travel 75 meters.
asked by Anonymous 
Biology DNA
why dna replication necessary to life? i think it because it carry genetic information?
asked by Shreya 
Chemistry
For 0.06697mol / 0.1kg = 0.6697 mol/kg does my answer have the correct amount of sig figs? Same for 0.1004mol / 0.1kg = 1.004mol/kg ?
asked by Hannah 
Math 208
x=3y+2
asked by Wanda 
Chemistry
I am trying to find th e# of moles of NaCl but I am not sure of the units. For my answer I get 0.0669. Should I leave it like this or do 6.69e2?
asked by Hannah 
Math
How many different groups of 20 can you make from 40?
asked by Andrea 
Math
An alien rocketship is traveling at a speed of 2,500,000 feet per minute. At this speed, how many miles will it travel in 1 second? Round to the nearest thousandth.
asked by Harry 
Calculus
integrate (27x 9x^2)/sqrt(x^3 +9)
asked by Jackie 
Art
1. Alexander Calder invented this type of art. () fiber art () mobiles () stabiles () public art 2. Today, decisions in planning, selecting, and/or creating an artwork for public display are made in the following way. () They are the decision of the
asked by Sarah 
math
i need a list of data with the mode 15 min 5 median 10 max 20
asked by layla 
computer literacy inf103
what do you think are the ethical responsibilities that should be adopted when any revolutionary technology is being developed? can you cite any existing sources on this from the literature?
asked by rochelle l 
Humanities
Quote at least two pairs of related lines from the Declaration of Independence and from John Locke's Of Civil Government. support the idea that Thomas Jefferson was influenced by Locke.
asked by Marie 
algebra
write an absolute value inequality describing the minutes of data (w) a full dvd will hold if a typical dvd can store between 137.9 and 142.1 minutes of data before it is considered full
asked by andrew 
statistics
I am having trouble generating a data set with 30 values for a given mean (21000), median (5000) and mode (7000). Please help! I've tried this on the calculator, but no luck.
asked by Vova 
Psychology
The majority of psychologists are electric, which means they draw information from different schools of thought rather than limiting themselves to information gained from only one perspective. However, most psychologists agree that it's important to: a.
asked by Terry 
Math
The owner of a bicycle factory said about 15,000 bicycles were made last month. What is the least number of bicycles that could have been made? What is the greatest number? Explain your thinking
asked by Anonymous 
PSY help
Sally is driving her car and talking on her cell phone. Statistically this behavior has been shown to be quite dangerous and contributes to many automobile accidents. In performing these two tasks simultaneously, Sally uses: a. conscious cognitive
asked by Tubbz 
writing
Why is it important not to run and fool around in an evacuation drill? Why do you have to stay calm during the drill?
asked by Gabby ( 5 grade) 
PSY
Humans develop as a result of interactions of 3 influences: genes that the person has inherited, events and situations that are external to the individual and the unfolding of a genetically influenced, often agerelated, sequence of physical changes and
asked by Terry 
math
Show that the following data could not possibly be fit by an exponential function x y 3 72 5 200 7 392
asked by Jason 
physics
(1) Dervive an expression for the maximum speed of v of electron in terms of V,me, and e. (2) The electron is replaced with a proton that starts from rest at the positive plate and travels toward the negative plate. Compare the maximum speed of the protons
asked by monica 
scottsdale CC
A car travels around a curve at a constant speed of 80.0 km/h. What is the car’s instantaneous velocity at an instant when it is headed west
asked by juan 
Chemistry
In the decomposition reaction 2 KCIO3 (s) > 2KCI (s)+3O2(g),what volume of O2 gas at STP would be produced from 3.66 of KCIO3 ?
asked by Sean Z. 
Chemistry
In the decomposition reaction 2 KCIO3 (s) > 2KCI (s)+3O2(g),what volume of O2 gas at STP would be produced from 3.66 of KCIO3 ?
asked by Sean Z. 
Ground School: Airport Operations
I am taking a ground school class (a preliminary for a private pilot license)and am having trouble taking in all of the information involving memorizing terms, abbrieviations formulas and definitions. How do I get all of those facts and equations to stick
asked by Lane 
Physics
A solid disk with a mass of 100kg and a radius of 0.2m, turns clockwise through an angular displacement 10 rad when starting from rest to attain its maximum angular speed, of 1 revolution every 0.5s. What is the angular acceleration that the wheel
asked by Brittany 
English
People count on the media to find out information around the world. They watch event happened in different place, weather, sport ect. What if the source is not accurate what Eggers demonstrates that the media is misleading, thus, the reader sees that the
asked by Anonymous 
Chemistry
Calucluate the pH of 100 mL of buffer that is 0.075 M NH4Cl and 0.175 M NH3 before and after the addition of 1.00 mL of 5.05 M HNO3 I have no idea where to even start. HELP!
asked by Katie 
agricultural science
examples of planted in an acidic soil and examples of crops planted in an alkaline soil
asked by faith 
math
if the derivative of f is f'(x)=ln(x^2+1)2, at which of the following values of x does f have an absolute minimum value? 2.53 0 4.44 or 1.72
asked by Anonymous 
calculus
∫ x^2 to 1 (ln^2x/x)dx= (A)(7/3e^2) b)0 c)2.72 d)4.44 e)1.72
asked by Anonymous 
math
There are nine customers waiting for their local SuperDuperMegaMart store to open on a big shopping day. In how many ways can the nine customers form a single line at the door? That is, how many different lines of nine people are possible?
asked by Karen 
calculus
∫ x^2 to 1 (ln^2x/x)dx= (A)(7/3e^2) b)0 c)2.72 d)4.44 e)1.72
asked by Anonymous 
chemistry
203.77miles/sec is converted to cm/nsec
asked by shawnta 
math
∫ x^2 to 1 (ln^2x/x)dx=
asked by Anonymous 
physics
The resistance of a 395 m long aluminum rod is 3580 . A. Find the crosssectional area of the rod mm2 B. Find the current in the rod when a potential difference of 14 V is applied across the ends. A
asked by Anonymous 
calculus
if integral of 2 to 2 (x^7+k)dx=16, then k= a)12 b)12 c)4 d)4 e)0
asked by illiana 
History
1. Why does James Fraser claim that there was great diversity in the progressive education movements? Summarize, and compare and contrast, the platforms of four different progressive educational reform groups. Which group do you believe had the best ideas?
asked by froget76 
social studies
Without our two great political parties cutting across economic and geographic interests, democracy as we know it could never have been made to function." The author of this statement probably meant to suggest that
asked by Anonymous 
karachi public
find out the quantity of nac2o4 per/liter in 500 ml?
asked by rizwan 
chemistry
state what will be observed on heating Pbco^3
asked by faith 
algebra
Tina has $600 in her bank account when she starts withdrawing $50 a week. What is the slope in this problem?
asked by Tori 
math
i have 739 gallons of water , how many 30 gallon containers can i fullfill? what is the answer?
asked by Anonymous 
Calculusderivatives
Determine h'(x) for h(x)= [x/(1x)]^2
asked by Jessi 
economics
what is the relationship between investment and interest rates
asked by Anonymous 
English
Writeacher, I'm posting you the rephrase again. I varied a few things, Thank you very much for you cooperation. 1) Mr. B refers briefly to the incident in the summer house. He excuses himself by saying that on that occasion he didn’t want to do her any
asked by Henry2 
MATH HELP
Will someone please explain and show how to work this one: How many different whole numbers can be made with the digits 5, 7, 8? For this problem, each different whole number may have 1, 2, or 3 digits and a digit may be repeated.
asked by PLEASE HELP 
phys3
A biologist is studying growth in space. He wants to simulate Earth's gravitational field, so he positions the plants on a rotating platform in the spaceship. The distance of each plant from the central axis of rotation is r = 0.11 m. What angular speed is
asked by opp 
Cross country running
Can I do anything for side cramps during a race?
asked by Lydia 
Cross country running
how do you keep motivated to keep going even though your body wants to quit?
asked by Lydia 
Calculus
i was just wondering if there was a difference between infinty and indetrminant. my freind said there the same thing. But i thought that for example if you are given a limit for a function, by direct subsitution you find that answer is infity. the
asked by Pria 
GEOMETRY
Which property supports the statement: "If AC=DF, then DF=AC" Symmetric Reflexive Transitive Substitution
asked by Tyler 
GEOMETRY
Find JK for (3,8) and K(1, 4).
asked by Courtney 
Chemistry
I am trying to find th e# of moles of NaCl but I am not sure of the units. 3.914g NaCl / mm=58.44 so is it 3.914g/mol divided by 58.44g/mol = 0.0669moles. I am not sure how many significant figues to use.
asked by Hannah 
GEOMETRY
What is the slope of line that passes through (4, 2) and (5, 1)?
asked by Lauren 
calculus
wat is the ans of this solutions? y=sin^4x cos4x? ^
asked by andrea 
physics
in electrolysis how is conductivity affected by the molecular mass of the solution
asked by physics123 
calculus
If g'(x)=2g(x) and g(1)=1, then g(x)= a)e^2x b)e^x c)e^(x+1) d)e^(2x+2) e)e^(2x2)
asked by victoria 
calculus
integral from 1 to 0 of e^2x dx= a)e^2x1 b)e^2 c)(e^2/2) d)(e^21)/2 e)2e^22
asked by victoria 
English
In this sentences I just want to know whether this sentence is correct. Natalia is a better cook that I or me. I have I
asked by Maryann 
psychology
what are some movies that is related to the issues of child development and developmental psychology
asked by tim 
Math
Which pairs of numbers have a least common multiple of 12? a)1 and 3; b)4 and 6; c) 8 and 24; d)24 and 36
asked by Mia 
physics
A car accelerates at a constant rate from zero to 28.7 m/s in 10 seconds and then slows to 17.5 m/s in 5 seconds. What is its average acceleration to the nearest tenth of a m/s2 during the 15 seconds?
asked by r 
Geometry
A neighborhood has provided trash cans to residents to dispose of their waste. All trash cans have a diameter of 1.5 meters and a height of 1.25 meters. What is the minimum number of trash cans required to dispose of 10 cubic meters of waste? Answer A. 14
asked by Anonymous 
Calculus
Find all the points (x,y) on the graph of f(x)=9x^236x+35 where the slope of the tangent line is zero.
asked by Jaleela 
Finanace
Beginning inventory 600 units @ $ 10 Purchases ( in order from first to last) 1,000 units @ $11 900 units @ $ 12 700 units @ $ 14 Sales for the period were 1,900 units A) Compute the inventory balance and the cost of goods sold at the end of the accounting
asked by Ruthie 
algebra
a bump on a dvd needs to be between 0.45 and 0.55 micron wide and between 0.95 and 0.99 micron high write two absolute value inequalities describing the width (x) and height (y) of the bump graph each inequality on separate number lines
asked by kevin 
algebra
A DVD player's laser reader helps to "read" the information on the DVD. A particular laser reader measures 0.56 micron thick. Does this fall with the required standards if a company uses t  0.03 less than or equal to 0.525 for determining the part to be
asked by kevin 
Physics
Isaac pushes rock, of a mass of 20kg, if from a cliff and it falls into the lake below. The cliff was 3m above the water. (Assume no air resistance) a. How much time did it take the rock to hit the water? b. What was its velocity when it was half of the
asked by Hayli 
science
i need to find a website that has a picture of hafnium lamp filaments
asked by dylan 
PreCalculus/Trivia
csc(theta)= 1/x sec(theta)= 1/ sqrt(1x^2) cot(theta)= sqrt(1x^2)/x What are these equations used for in real life matters or in regards to calculus? Can't seem to find the answer anywhere :/
asked by Maria 
Human resource
Can someone explain me this question: explain how and to what extent THE CONCEPT OF PEOPLE HAS CHANGED OVERTIME ,HENCE,HIGHLIGHTING THE EVOLUTION AND GIVING PRACTICAL EXAMPLES TO ILLUSTRATE YOUR ANSWER. am new to this module and can someone pls explain
asked by pallavi 
Math
A bicyclist travels 20 miles per hour. How long would it take the cyclist to finish a 120 mile race?
asked by NeedHelpMath 
English
Could you check if the following instructions are correct? Thank you. 1) It takes me ten minutes to go to school by motorbike 2)Complete the sentences with the correct form of the Present simple or the Present continuous 3) Complete Mary’s story with the
asked by Henry2 
Ground School: Regulations
I am working on my private pilot license and these regulation things, HOW do you learn all of them?????????
asked by Jake 
math
it is 6;45am how many hours and minutes until 10;38pm
asked by Anonymous 
Math
A person travels 32 meters,turns right & travels 34 more meters. It took 3 minutes. What is her speed?
asked by HELP!!! 
Algebra
How many hours are in x weeks? X/168 24x/7 7x/24 168x
asked by Amy 
stats
The sponosor of a local soccer tournament is responsible for writting an article for the local paper announcing the 1st, 2nd, 3rd place winners.If 10 teamsare invited to the tournament, ans th sponsor wanted to get the article written in adance so it can
asked by tim 
Math/117 University of Phoenix
Could someone look over this paper before I turn it in? Thanks Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people
asked by Debbie 
Physics
Abel flicks a 20g marble at a speed of 0.5 m/s. It has one dimensional collision with a 10g bouncy ball, that was initially at rest. After they collide, the bouncy balls speed is 0.5 m/s. What is the marbles postcollision speed? Show whether or not any
asked by Hunter