Questions Asked on
November 15, 2010

calculus
A long rectangular sheet of metal, 12 inches wide, is to be made into a rain gutter by turning up two sides so that they are perpendicular to the sheet. How many inches should be turned up to give the gutter its greatest capacity?
asked by MEG 
Calculus
A particle moves along a line so that at any time t its position is given by x(t)=2(pi)t+cos(2(pi)t). Determine the particle's maximum velocity.
asked by MEG 
Physics Spring
A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 1.0 J of work is required to compress the spring by 0.12 m. If the mass is released from rest with the spring compressed, it
asked by Dan 
Chemistry
Consider an electrochemical cell based on the following cell diagram: Pt  Pu3+(aq), Pu4+(aq)  Cl2(g), Cl−(aq)  Pt Given that the standard cell emf is 0.35 V and that the standard reduction potential of chlorine is 1.36 V, what is the standard
asked by Diana 
Chemistry
A current of 0.80 A was applied to an electrolytic cell containing molten CdCl2 for 2.5 hours. Calculate the mass (in grams) of cadmium metal deposited. [Enter only numbers in the blank.]
asked by Diana 
4th grade
Writing to Explain: Explain how you can use an array to find partial products for 4x36.
asked by Justine 
biology
If a browneyed man marries a blueeyed woman and they have ten children, all browneyed, can you be certain that the man is homozygous? If the eleventh child has blue eyes, what will that show you about the father’s genotype?
asked by laurie 
AP PHYSICS
the height of the upper falls at Yellowstone falls is 33.2m. when the water reaches the botton of the falls, its speed is 25.8 m/s. neglecting air resistance, what is the speed of the water at the to of te falls.
asked by paul 
chemistry
Consider a 20.0mL sample of 0.105M HC2H3O2 is titrated with 0.125M NaOH. Ka=1.8x10^5. Determine each of the following: a) the initial pH b) the pH at 5.0mL of added base c) the pH at onehalf of the equivalence point d) the pH at the equivalence point
asked by bobjahng2 
Physics
A flat slab of styrofoam, with a density of 32 kg/m^3, floats on a lake. What is the minimum volume the slab must have so that a 42 kg boy can sit on the slab without it sinking?
asked by Amber 
Chemistry
H2O (liquid) yields H2O gas delta H= +44kJ. How much heat is evolved when 9.0 grams of water vapor is condensed to liquid water?
asked by Katelyn 
Math
Determine the 10th term of the sequence 3, 10, 28, 72, 176... State the general term.
asked by Emily 
chem
Fingernailpolish remover is primarily acetone (C3H6O). How many acetone molecules are in a bottle of acetone with a volume of 315 mL? (density of acetone = 0.788 g/cm3.) I know how to get grams to the molecules once i get ml to grams. but im not sure how
asked by sam 
Chemistry
Calculate the cell emf (in volts) for the following reaction at 25°C: Ni(s) + 2 Cu2+(0.010 M) → Ni2+(0.0010 M) + 2 Cu+(1.0 M) [Enter only the number of your answer.] Answer
asked by Diana 
AP Chem
What energy change is associated with the reaction to obtain one mole of H2 from one mole of water vapor? The balanced equation is 2 H2O(g) > 2 H2(g) + O2(g)and the relevant bond energies are HH : 436 kJ/mol; HO : 467 kJ/mol; OO : 146 kJ/mol; O=O : 498
asked by Kai 
chemistry
Nitrous acid, HNO2, has a Ka of 7.1 x 10^4. what are [H3O+], [NO2], and [OH] in .920 M HNO2?
asked by Ron 
Physics
Jill and her friends have built a small rocket that soon after liftoff reaches a speed of 900 m/s How high above the Earth can it rise? Ignore air friction. h=? m
asked by Michael 
Calc.
Use a linear approximation (or differentials) to estimate the given number. Tan 44 degrees Please help.
asked by Chelsea 
10th grade geo
answers to objective 3c algebra with pizzazz
asked by amanda 
AP Chem
What energy change is associated with the reaction to obtain one mole of H2 from one mole of water vapor? The balanced equation is 2 H2O(g) > 2 H2(g) + O2(g)and the relevant bond energies are HH : 436 kJ/mol; HO : 467 kJ/mol; OO : 146 kJ/mol; O=O : 498
asked by Kai 
chemistry
The volume of a gas is 5.80 L, measured at 1.00 atm. What is the pressure of the gas in mmHg if the volume is changed to 9.65 L? (The temperature remains constant.)
asked by rasheedat 
CALCULUS BC
a particle moves on the xaxis in such a way that its position at time t is given by x(t)=3t^525^3+60t. for what values of t is the particle moving to the left. a.2
asked by paul 
Chemistry
During the combustion of 5.00 g of octane, C8H18, 239.5 kcal is released. a) What is the sign of (delta)H for this reaction? b) How much energy is released by the combustion of 1.00 mol of C8H18
asked by Patrick 
physical science
a 250kg rock falls off a cliff and comes to rest on the ground, which is 40 m below the cliff . At what point is the rock's potential energy at maximum?
asked by sharmeka 
sociology
What is the difference between deviance and nonconformity?
asked by Rachel 
Chemistry
4.0 gram of ferrous ammonium sulphate, FeSO4*(NH4)2SO4 * 6H2O, is used. Since the oxalate is in excess , Calculate the theoretical yield of the iron complex FeSO4•NH4)2SO4•6H2O + H2C2O4•2H20 > FeC2O4 + (NH4)2SO4 + H2SO4 + 8H2O 6FeC2O4 + 3H2O2 +
asked by Kesha 
Chemistry
How much energy does it take to convert 0.800 kg ice at 20.°C to steam at 250.°C? Specific heat capacities: ice, 2.1 J g1 °C1 liquid, 4.2 J g1 °C1 steam, 2.0 J g1 °C1 ΔHvap = 40.7 kJ/mol, ΔHfus = 6.02 kJ/mol This is what I tried to do:
asked by Anonymous 
math
Suppose a white dwarf star has a diameter of approximately 1.6692x10^4 km. Us the formula 4pie^2 to find the approximate surface area of the star
asked by Daniel 
physics please help
A spring is hung from the ceiling. A 0.300 kg block is then attached to the free end of the spring. When released from rest, the block drops 0.170 m before momentarily coming to rest. (a) What is the spring constant of the spring? (b) Find the angular
asked by john 
chemistry
How many grams of MgF2 will dissolve in 150. mL of 0.100 M NaF solution? Ksp for MgF2 = 6.4 x 109
asked by Audrey 
math
What is the order of 1.5 x 10^3, 1.4 x 10^1, 2 x 10^3, and 1.4 x 1^2 from least to greatest?
asked by Daniel 
Advanced accounting
The balance sheets of Petrello Company and Sanchez Company as of January 1, 2011, are presented below. On that date, after an extended period of negotiation, the two companies agreed to merge. To effect the merger, Petrello Company is to exchange its
asked by Cynthia 
geometyr
given triangle QRS=triangle TUV, QR=2x=7, RS=13,and QS=3x+2 and TV=7x6 find the value of x
asked by stephanie 
math
Choose the equation of the horizontal line that passes through the point (2, 4).
asked by Anonymous 
Calculus
A company is designing shipping crates and wants the volume of each crate to be 4 cubic feet, and the crate's base to be a square between 1 and 1.5 feet per side. If the material for the bottom costs $5, the sides $3 and the top $1 per square foot. What
asked by MEG 
math
Writing in math, how can estimating help you add twodigit numbers?
asked by David 
chemistry
How many grams equal 1.0 mol of Azurite, Cu3(CO3)2(OH)2?
asked by pinky 
Physics
A square, 0.52 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 15.0 N lies in this plane and is applied to the square. What is the
asked by Bella 
Math
Tell whether the triangle with the given side is a right triangle;14mm, 19mm, 23mm
asked by Sasha 
Chem
Why is BaSO4 insoluble in HNO3?
asked by Molly 
math
how would you write in a decimal:nine tousands,six hundred five and nine tenths
asked by samantha 
chemistry
The weak acid HQ has pKa of 4.89. Calculate the [H3O+] of .025 M HQ. when i did this i got 5.2 x 10 ^14
asked by missy 
chem
consider the following balance chemical equation: 2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4 grams of copper(II) oxide, which is the limitting reagent?? what is the theorectical yield of nitrogen gasd? if 8.52 g of N2 are
asked by julia 
Chemistry
How many hours will it take to produce 78.0 g of Al metal by the reduction of Al3+ in an electrolytic cell with a current of 2.00 Amperes? [Enter only a number for your answer.]
asked by Diana 
math
2 trees are 80 m apart . from a point halfway between the trees, angles of elevvation of the tops of the trees are measured. what is the height of each tree to the nearest metre
asked by anu 
chem
consider the following balance chemical equation: 2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4 grams of copper(II) oxide, which is the limitting reagent?? what is the theorectical yield of nitrogen gasd? if 8.52 g of N2 are
asked by juliaDrboob22 
chemistry
The XX bond energy in the hypothetical gas, X2 is 153 kJ/mol. a. How much energy, in joules, is required to break the bond in a single XX molecule? b. What wavelength of electromagnetic radiation would have the energy required to break the XX bond? c.
asked by help 
English
In Act 4, Claudius notes that “sorrows come…in battalions.” By the end of the play these sorrows include the deaths of all the major characters except Horatio. To what degree can Claudius be held responsible for all the sorrows of the play? Which
asked by rainy 
chemistry
The enthalpy change for the solution process when solid sodium hydroxide dissolves in water is 44.4 kJ/mol. When a 13.6 g sample of NaOH dissolves in 250.0 g of water in a coffeecup calorimeter, the temperature increases from 23.0 o C to __________ o C.
asked by Anonymous 
rpi
For the stepladder shown in Fig. 1251, sides AC and CE are each 3.34 m long and hinged at C. Bar BD is a tierod 0.662 m long, halfway up. A man weighing 746 N climbs 2.51 m along the ladder. Assuming that the floor is frictionless and neglecting the mass
asked by Anonymous 
STATISTICS HELP PLEASE!
suppose you wish to estimate a population mean based on a random sample of n observations, and prior experience suggests that sd=12.7. if you wish to estimate the mean correct to within 1.6, with probability equal to .95, how many observations should be
asked by Courtney 
Physics
Three masses are connected by massless rigid rods. Rods AC and CB have length l= 16.6 cm. If massA=115.0 g, massB=206.0 g, and massC=310.0 g, what are the coordinates of the center of mass? (Enter your answer for the x coordinate first, followed by the y
asked by Bella 
French 3
Réécrivez les phrases avec l'adverbe qui correspond a chaque adjectif. Faites attention au placement de l'adverbe. 1. Karine et Mathilde sortent (frequent) 2. Fabien lit le journal (quotidien) 3. Sara termine ses devoirs. (facile) 4. michel conduit
asked by Sarah Smith 
chem/DrBob22
consider the following balance chemical equation: 2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4 grams of copper(II) oxide, which is the limitting reagent?? what is the theorectical yield of nitrogen gasd? if 8.52 g of N2 are
asked by julia 
Calculus
Mr. Phillips decides to have a completely fencedin garden. It will be laid out so that one side is adjacent to his neighbor's property. The neighbor agrees to pay for half of that part of the fence which will border his property. The garden is to contain
asked by MEG 
english
Please help! My Mom and I are disagreeing! Jazz began in New Orleans. Verb is began and it is intransitive. 2) Jazz musicians played by ear. Verb is played and it is transitive.My Mom thinks it is intransitive. 3)They played blues and spirituals. Verb is
asked by Reed 
chemistry
The solubility of Fe(OH)2 is 3.00 103 g in 2.00 liters at 18°C. What is its Ksp at 18°C?
asked by Audrey 
Physics
A particular guitar string is supposed to vibrate at 220 , but it is measured to vibrate at 230 . By what percent should the tension in the string be changed to correct the frequency? I have been working for 7 hours of hw! Please help!
asked by Jenna 
chemistry  DrBob222
For this question can u please explain steps 3 and 4 4.0 g of ferrous ammonium sulphate, FeS04(NH4)2 SO4 6H20, is used. The oxalate is in excess, calculate the theoretical yield of the iron complex. Can someone please show me how to calculate a question
asked by eddy 
Physics
Two People who weigh the same climb a flight of stairs. The 1st person climbs the stairs in 30s, and the 2nd person climbs them in 40s. Which person does more work? which uses more power.  I would personaly think the 2nd person does more work and power
asked by Lee 
chemistry
What is the value of [OH] in a 0.015 M CH3COOH solution? Ka = 1.8 x 105 I started by writing the equation: CH3COOH + H2O H3O+ + CH3COO Ka= [H3O+][CH3COO]/[CH3COOH]= 1.8 E5 ... Now what? I don't understand where OH relates to this ...
asked by Audrey 
chemistry
Air bags are actived when a servere impact causes a steel ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction: 2NaN3=2Na(s)+3N2(g) what mass of
asked by ESTR3LLA 
chemistry
Calculate the ionization constant, Ka, of phenol (HC6H5O), a weak acid, if a 0.25 M solution of it has a pH of 5.24.
asked by Audrey 
social studies
why did the struggle for rich farmland affect the colonists in Virginia?
asked by Anonymous 
Math
Describe how this could happen that three different animals could each be claimed  rightfully  to be the largest of the three. Discuss the implications of this kind of situation for teaching students about measurement.
asked by lt 
chemistry
Calculate the mass (in grams) of water vapor produced when 56.0 grams of pure hydrogen gas burn in the air. Given the information from that, calculate the mass of oxygen gas that would be needed to burn 100 grams of hydrogen gas.
asked by Brandon 
managerial accounting
The following direct materials and direct labor data pertain to the operations of Solario Manufacturing Company for the month of August Costs Quantities Actual labor rate $13 per hour Actual hours incurred and used 4,200 hours Actual materials price $128
asked by jennifer 
chemistry
The following system is at equilibrium with [N2O4] = 0.55 M and [NO2] = 0.25 M. If an additional 0.10 M NO2 is added to the reaction mixture with no change in volume, what will be the new equilibrium concentration of N2O4? N2O4(g) 2 NO2(g)
asked by Audrey 
HELP!! MATH
A boater finds herself 4 miles fromm the nearest point on a straight shore line whech is 6 miles from a shoreside motel. She plans to row on shore and then walk to a motel. If she can walk at 3 mph, at what speed must she be able to row so that the
asked by MEG 
chemistry
When 10.g of NaCl is reacted completely with 65g of Pb(NO3)2 according to the following reaction? How much (grams) of PbCl2 can be produced? 2 NaCl + Pb(NO3)2 > PbCl2 + 2 NaNO3
asked by pooja 
the lagrange multiplier equation
A cylindrical oilstorage tank is to be constructed for which the following costs apply: cost per square meter metal for sides $30.00 (cost per square meter) combined costs of concrete base and metal bottom $37.50(cost per square meter) top 7.50 (cost per
asked by sunny 
chemistry
Calculate the mass (in grams) of water vapor produced when 56.0 grams of pure hydrogen gas burn in the air. Given the information from that, calculate the mass of oxygen gas that would be needed to burn 100 grams of hydrogen gas.
asked by Brandon 
phsyics
The 3.0cmdiameter water line in the figure splits into two 1.0cm diameter pipes. All pipes are circular and at the same elevation. At point A, the water speed is 2.0 m/s and the gauge pressure is 50 kPa. What is the gauge pressure at point B. I keep
asked by Allison 
AlgebraPlease check
y= 6x is written as: Choices y = log(6)x x = log(6)y I chose y = log(6)x, correct?I did the inverse so x = 6^x isolate y so it becomes y = log(6)x
asked by Jesse 
Calculus
q 0 125 250 375 500 625 750 C'(q) 26 24 30 26 23 25 29 a) If the fixed cost is $8500, use the average of left and righthand sums to determine the total cost of producing 500 units. Answer: $ b) How much would the total cost increase if production were
asked by Lena 
Physics!!
A 4.9 kg bucket of water is raised from a well by a rope. The acceleration of gravity is 9.81 m/s2 . If the upward acceleration of the bucket is 3.3 m/s2, find the force exerted by the rope on the bucket of water. Answer in units of N.
asked by Joey 
Chemistry 20
Determine the amount concentration of potassium ions and dichromate ions in a solution made by dissolving 44.7 g of potassium dichromate to make a volume of 205 mL. Include the balanced chemical equation.
asked by Anonymous 
Biolody
Which of the following is NOT a characteristic of the respiratory surface of the alveoli? a) Thinwalled b) Dry c) In contact with an environmental source of oxygen d) In contact with the transport system that carries dissolved materials to and from the
asked by Brianna 
spanish
what is the third person singular form of the verb estar? Rewrite the following sentences replacing the underlined direct object with a direct object pronoun. Remember, the direct object pronoun needs to be placed directly in front of the conjugated verb.
asked by whitney 
chemistry
How many grams of rust form when 453 kJ of energy are released?
asked by sal 
english
Plot is the artificial ordering of events true?
asked by danny 
5th grade math
Form a equivalent problem for 4 1/2 divided by 1/2 by doubling both the dividend and divisor. Then find the quiotent. Would that be 9 divided by 1 =9
asked by Jill 
math
what is the simplified form of the expression? (3c^2d^4)^3(2c^5d^8)^3
asked by Daniel 
Physics
A man of mass 64.8 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 16.8 kg and is 3.9 m long. Suppose the man stands to the right from the middle of the scaffold that is a distance one sixth of the length of the
asked by Bella 
chem
Air bags are actived when a servere impact causes a steel ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction: 2NaN3=2Na(s)+3N2(g) what mass of
asked by ESTR3LLA 
Geometry
To build a fence, Jim positioned the fence posts and then placed a 2 x 4 board at an angle between the fence posts. As he placed each picket, he measured the angle that the picket made with the 2 x 4. Why does this ensure that the picket will be parallel?
asked by Shadow 
statistics
a study of 40 professors showed they spent on average 13.6 minutes correcting a student papers. Given a standard deviation of 17, the 90% confidence interval of the mean time for all the test papers is what?
asked by Emmanuel 
chemistry
Acetic acid ionizes in water according to the following equation: CH3COOH = H^+ +CH4COO If the solution is .906 M acetic acid, what is the concentration of H+?
asked by Hermione 
programing
A small startup software developer company needs to create a program that will calculate the pay of its employees. For the third version of the program, the company wants the program to accept an employee’s name, the number of hours the employee worked,
asked by Anthony 
11th grade
What measures does henry say the colonists have already tried in the dealings with england?
asked by mike 
english
Character can be portrayed by direct exposition. false?
asked by danny 
math
A British company is sending you measurements for a table to build in your factory. The table top must be 50 cm × 75 cm. Your machine calibrates in inches. Find the size of the table in inches. (1 cm = .39 in)
asked by Anonymous 
chem
Air bags are actived when a servere impact causes a steel ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction: 2NaN3=2Na(s)+3N2(g) what mass of
asked by ESTR3LLA 
AlgebraAnother question
Evaluate 4log(4)8 Possible answers are: 4 0 8 1 Where do I startI don't have an example to follow? Please give me a direction do I evaluate log(4)8 first
asked by Jesse 
physics
a 75.0 kilogram skier is at the top of a hill that is thirty degrees above the horizontal. the skier starts form and then travels down the hill which is 100 meters long. the skier at the bottom of the hill instantaneously then travels on flat horizontal
asked by marie 
Math
Tell whether the triangle with the given side is a right triangle;1.4 m,4.8 m,5m. Explain please.
asked by Sasha 
college
the length of the top of a table is 3 m greater than the width. the area is 88m^2. find the dimensions of the table
asked by will 
buddhism pilgrimage
thesis statement for buddhism
asked by jacqui 
French 3
1. créez six phrases a l'aide éléments des trois colonnes. Ajoutez tous les autres éléments nécessaires. A. agent de police chauffeur de taxi citoyens colocataire conducteur maire passagers piéton __B.________________ améliorer construire descendre
asked by Sarah Smith 
algebra
Which of the following describes the end behavior of the graph of the function f(x) = –x6 – 3x4 + 7x – 5? a. downward to the left and upward to the right b.upward to the left and downward to the right c.downward to the left and downward to the right
asked by Math is TOUGH 
Math
THe total ticket sales for the basketball game were $1,625.00. Adult tickets were $7.00, and student tickets were $3.00. Twice as many students bought tickets as adults. How many student and adult tickets were sold?
asked by Mike 
Math
Four balls are simultaneously picked at random from a jar containing 2 red balls, 2 green balls, and 6 yellow balls. What is the probability that exactly two of the selected balls will be red?
asked by Molly 
Calculus
A baseball diamond is a square with side 90 feet. A batter hits the ball and runs toward first base with a speed of 24 f/s. At what rate is his distance from second base changing when he is halfway to first base?
asked by John 
Chemistry
Other than moisture, what are the three major components of the air you breathe
asked by Adrienne 
Physics
A uniform plank of length 5.0 m and weight 217 N rests horizontally on two supports, with d = 1.06 m of the plank hanging over the right support. To what distance, x, can a person who weighs 427 N walk on the overhanging part of the plank before it just
asked by Pete 
English/history question regarding two stories
in two stories, Genesis and Popol Vuh, What was different and what was similar? I need to write a papaer on these two things. Please help me Thank you
asked by Allyson. 
Physics
A man of mass 64.8 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 16.8 kg and is 3.9 m long. Suppose the man stands to the right from the middle of the scaffold that is a distance one sixth of the length of the
asked by Bella 
Calculus
Match: A. r(1997)−r(1992) B. ∫19921997r′(t)dt C. r(1997) D. ∫19921997r(t)dt E. [ r(1997)−r(1992)/1997−1992] and interpretations: A. Average rate of change of the debt rate between 1992 and 1997 B. Change in debt rate between 1992 and 1997 C.
asked by Lena 
Chem I
Calculate the concentrations of hydronium and hydroxide ions in a solution prepared by dissolving 0.345g of solid NaOH in enough water to make 225mL of solution. Also calculate the pH and pOH of the solution.
asked by Natalea 
physical
calculate the total energy of a 2kg object moving at 10m/sec 50meters above the surface.
asked by Anonymous 
physics
5.Assuming the surface tension of water is .073 N/m, what is the force required to overcome the surface tension?
asked by Amber 
math
what is the simplified form of the expression? (3c^2d^4)^3(2c^5d^8)^3
asked by Daniel 
physical science
In the cabin of a jetliner that travels at 600 km/h, a pillow drops from an overhead rack into your lap below. Since the jetliner is moving so fast, why doesn't the pillow slam into the rear compartment of the plane? What is the horizontal speed of the
asked by Justin 
physics
An athlete at the gym holds a 5.29 kg steel ball in his hand. His arm is 67.0 cm long and has a mass of 4.57 kg. What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
asked by pete 
calculus
a company introduces a new product for which the number of units sold S is S(t)=200(5(9/2+t)) where t is the time in months. a.)find the average value of S(t) during the first year. b.) during what month does S'(t) equal the average value during the first
asked by kel 
physics
if a 700kg piano us lifted 4.0 meters in 14 seconds, how much power is developed
asked by tyler 
Chemistry
Okay, so I got question 1 but I don't know how to solve question 2. Since they are tied in, I'll post both of them. 1. When 0.43g of NaNO2 is allowed to react with an excess of HSO3NH2, the volume of N2 gas produced is 0.145 L. After the reaction is
asked by yipez 
Engineer Mechanics
60kg skier passes point a with a speed of 5 m/s, determine his speed when he reaches point b. also find the normal force exerted on him by the slope at this point.
asked by Gubby 
Finance
A company is considering a plan that has different profit results under different conditions. Assuming there is a 20% chance of a boom and 10% chance of a recession, compute the expected value of their plan. Condition Result Boom $2,000,000 Profit Average
asked by Suzy 
physics
if a 700kg piano us lifted 4.0 meters in 14 seconds, how much power is developed
asked by tyler 
algebra
the function w(x)=0.01x^2+0.27x+9.20 can be used to estimate the number of workers in the US, x years after 1980. How many workers were there in 1995? please show work. a. 9.2 M b. 10.4M c. 11M d. 15.5M
asked by Math is TOUGH 
Calculus
What is the xcoordinate of the point on the curve y=e^x that is closest to the orgin?
asked by MEG 
Chemistry 20
Determine the amount concentration of the iron ions and sulfate ions in a 0.620 mol/L solution of iron(III) sulfate. Including the balanced chemical equation.
asked by Anonymous 
chem
An ideal gas in contained in a cylinder with a volume of 5.0x102mL at a temperature of 30C and a pressure of 710 torr. The gas is then compressed to a volume of 25mL, and the temperature is raised to 820C. What is the new pressure of the gas?
asked by julia 
11th grade
At a glassware factory, molten cobalt glass is poured into molds to make paperweights. Each mold is a rectanglar prism whose height is 3 inches greater than the length of each side of the square base. A machine pours 20 cubic inches of liquid glass into
asked by Stephanie 
economics
A company is considering a plan that has different profit results under different conditions. Assuming there is a 20% chance of a boom and 10% chance of a recession, compute the expected value of their plan. Condition Result Boom $2,000,000 Profit Average
asked by Anonymous 
physics
could someone tell me how to do this? 1. A diagram illustrating several tugboats applying forces to a barge is shown below. What is the magnitude and direction of force does tugboat C (Fc) need to apply to keep the tugboat from moving? C:\Documents and
asked by grace 
chemistry
write a balance equation for the following. when octane is burned in an excess of oxygen, carbon dioxide and water vapor produced
asked by brook 
Math
Mr. Oakley, my wood shop teachger is kind of strange. He has a 12 inch strip of wood with only four marks in it that he uses as a ruler. Yesterday, I asked him about it. "What good is a ruler you use uf ut only has 4 marks on it? There are some lengths you
asked by Issa 
Chemistry wavelengths
a. If a solution appears to be violet, what range of wavelength would you use for analysis of the solution? b. How about if the solution was bluegreen?
asked by Jenna 
economics
A company is considering a plan that has different profit results under different conditions. Assuming there is a 20% chance of a boom and 10% chance of a recession, compute the expected value of their plan. Condition Result Boom $2,000,000 Profit Average
asked by Suzy 
Chemistry,please help
You are working with the following equilibrium system in which one chromium complex is blue and one chromium complex is purple. The system is at equilibrium and is currently blue. Predict how the color will change if aqueous Ag+ ions are added. Ag+ reacts
asked by HK 
English
Posted by rfvv on Monday, November 15, 2010 at 6:19am. The man said,"I want you to weed this garden." (This garden seems to belong to the man.) Q: What did the man want Francisco and his grandpa to do? 1. He wanted them to weed a garden. 2. He wanted them
asked by rfvv 
College Chemistry Help Asap!
Determine the values of Kp that correspond to the following values of Kc a)CO(g) + Cl2(g) COCl2(g) Kc= 1.2 x 10^3 at 668 K b)2 NO(g)+ Br2(g) 2 NOBr(g) Kc= 1.32 x 10^2 at 1000 K c) 2 COF2(g) CO2(g)+ CF4(g) Kc= 2.00 at 1000 degrees Celsius
asked by shanice 
Chemistry
What reagent would allow you to distinguish between AgNO3 and MNSO4? (As if using an analysis scheme)
asked by Molly 
physics help
A 1.0 kg object is suspended from a vertical spring whose spring constant is 130 N/m. (a) Find the amount by which the spring is stretched from its unstrained length.
asked by jason 
Calculus
An isosceles triangle is to be drawn with its two equal sides of legth 10. What is the maximum possible area for the triangle? [Note: The area of a triangle is given by half the product of two sides with the sine of the included angle.]
asked by MEG 
Chemistry 20
What volume, in millilitres, of distilled water must be added to 105 mL of 0.600 mol/L sulfuric acid solution in order to dilute it to a concentration of 0.400 mol/L
asked by Anonymous 
Chem I
Ok here is another one! Concentrated aqueous HClO4 has a concentration of 14.8 M. Calculate the concentrations of ALL ions present in a solution prepared by pipetting 5.00mL of concentrated HClO4 into a 1000.0mL volumetric flask and filling to the mark.
asked by Natalea 
physics
A hiker who weighs 889 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 3690 N, and rests on two concrete supports at each end. He stops onefifth of the way along the bridge. What is the magnitude of
asked by Bella 
math
write a decimal number for each word name nine thousand,six hundred five and nine tenths
asked by samantha 
9th grade
Use the following Info. At sea level the speed of sound in air is linearly related to air temp. If 35 degrees Celsius sound travels at a rate of 352meters per sec. if 15degrees Celsius sound travels at 340 meters per sec. How would i write a linear
asked by Kaela 
biology
Which of the following is NOT true about the digestive system of annelids? a. It contains setae to move the food through the anus. b. It is similar to an open tube. c. It passes nutrients through the intestinal wall to the bloodstream. d. It stores soil in
asked by Lily 
Intro to chemistry
Determine the volume of 2.3 M H3PO4 that can completely react with? 340 mLs of a 5.1 M solution of NaOH according to the reaction: 3 NaOH + H3PO4 > Na3PO4 + 3 H2O stuck on a homework problem..pls help!
asked by tc 
PhysicsPlease Help Me!!
5.Assuming the surface tension of water is .073 N/m, what is the force required to overcome the surface tension?
asked by Amber 
chemistry
A diprotic acid solution H2A has a molarity of .95 M. the concentrations of the species present at equilibrium are as follows: [H+] = .25 M, [HA]=.25M, [A^2] =4.6x10^4 M. what are the first and second ionization constants for this acid?
asked by Sam 
Chem I
Ok one more! Write the balanced equations and assign oxidation numbers to all atoms in these two reactions involving iron. If the effective oxidation number of any particular atom changes during the reaction then a redox reaction has occurred. If a redox
asked by Natalea 
BUSINESS ORGANIZATION
1. WHAT IS THE DIFFERENCE BETWEEN A MANAGER AND A LEADER; 2. WHAT ARE THE MAIN OR DIFFERENTS TYPES OF A LEADER OR LEADERSHIP; DISCUSS THEIR MAIN FUNCTIONS AND STATE WHETHER ANYONE CAN BECOME A LEADER.
asked by MARY 
chemistry
Write the formulas for these compounds 1. manganese (IV) oxide 2. nickel (II) chloride 3. zinc chloride
asked by Nick 
geometry
In an isosceles triangle ABis congruent to BC. Measure of angle A is x +3y and the measure of angle C is 3x +2y. The measure of angle C is 63 degrees. Find x and y.
asked by Aaron 
math
Originally priced at $35 now on sale for 25% what proportion could you do to find d the discount of the price
asked by Abby 
math
(6x7) 5x
asked by robert 
science
A 60.0 kg skier rides a 2710 m long lift to the top of a mountain. The lift makes an angle of 14.5° with the horizontal. What is the change in the skier's gravitational potential energy?
asked by Miley 
physics help
A 8.6 kg board is wedged into a corner and held by a spring at a 50.0° angle, as the drawing shows. The spring has a spring constant of 186 N/m and is parallel to the floor. Find the amount by which the spring is stretched from its unstrained length.
asked by jason 
Algebra
Consider the equation 5x + 2y = 30. Part 1: On your own paper, graph this equation using the slopeintercept method. In the space provided, explain, in words, each step of the procedure you used. Make sure to use complete sentences and correct grammar. (3
asked by Heather 
Molar Mass Question
Hello, I have been asked to find the molar mass of ferrous ammonium sulfate [ NH4]2[Fe][SO4]2·6H2O] would i consider the molar mass of the water as well, why or why not?
asked by Moi 
math
The sum of the page numbers on the facing pages of a book is 457. Find the page numbers?
asked by dc 
Math
Tell whether the triangle with the given side is a right triangle;14mm, 19mm, 23mm Explain please.
asked by Sasha 
st elizabeth technical
1. What would you think of a company's ethics if ti changed accounting methods every year? 2. What accounting principle would changing methods every year violate? 3. Who can be harmed when a company changes its accounting methods too often? How?
asked by dave 
general science
A test liquid has a density if 1.1g/ml. when you pour some of it into a cupof water, what will happen ( assumming that their natures are such that they don't mix and that there is no chemical reaction between the two subtances?
asked by sherrie 
physics
A square, 0.52 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 15.0 N lies in this plane and is applied to the square. What is the
asked by Bella 
9th grade algebra
The force F required to stretch a string varies directly with the amount the string is stretched, S. 32 pounds is needed to stretch a string 4 inches.. A) Write a direct variation equation that relates F and S. Answer: 32=F*S+4 is what I think.. Most
asked by Allyson 
history
How did ranching become established in the West?
asked by ashely 
Calculus
Find the minimum distance, measured horizontally, between the graphs of y=x and y=x^3
asked by MEG 
history
what checks and balances does president, Congress, and the judiciary have on the bureaucracy. Which techniques are used most often, and which are most effective and why? Respond to at least two of your classmates' postings
asked by Lateefa 
math
what is the simplified form of the expression? (3c^2d^4)^3(2c^5d^8)^3
asked by Daniel 
com/156
what is the main point of process analysis in writing? Why are four basic steps of process analysis important? what happens if you skip a step?
asked by jo 
math
Scientists believe that there is an extremly massive black hole at the center of the milly way. How many times more massive than the Sun would a black hole with a mass of 7.36 x 10^36 kg be? The mass of the sun is approximately 1.99 x 10^30 kg.
asked by Daniel 
Chemistry
Can you have one halfreaction take place, without the other halfreaction taking place immediately? The other halfreaction takes place when the cell potential is raised. I half witness this in some electrochemical cells. Sincere Thanks.
asked by Frances 
Physics
5.Assuming the surface tension of water is .073 N/m, what is the force required to overcome the surface tension?
asked by Amber 
MATH STUCK:(
I am having some difficulties factoring polynomials and I use only one method to figure the stuff out, which is the guess and check method because it's just mental math work and not that complicating. Here is a question that I know how to do, and below it
asked by Anonymous 
Physics
Two People who weigh the same climb a flight of stairs. The 1st person climbs the stairs in 30s, and the 2nd person climbs them in 40s. Which person does more work? which uses more power.  I would personaly think the 2nd person does more work and power
asked by Lee 
science
Pendulum A is 20 cm long and has a 5 gram mass on it. Pendulum B is 30 cm long and has a 10 gram mass on it. Which one has a faster period?
asked by jessie 
ethics
Consider the following scenario: You are aware of a problem that is costing your company productivity. This problem is caused by a fellow employee !@#$%^&fuses to use current technology. This employee has asked you to keep the situation to yourself, since
asked by Anonymous 
Music The Classical Era
The______ is an essential characteristic of the sonata form.
asked by Marie 
math
Find the maximum area of a rectangle inscribed between the xaxis and f(x)=x^4+3
asked by Jeff 
MATH
KARA NEEDS $35 FOR AN AQUARIUM FOR 6 FISH. HOW CAN SHE PAY WITH THE LEAST TEN AND ONE DOLLAR BILLS?
asked by DARLA 
chemistry
How many grams equal 6.3 mol of N2?
asked by pinky 
9th grade algebra
The table shows the ammount ( IN dollars) spent by a household on plans and flowers in certain years. ( Time interval means to give a range of years) A) Determine the time interval during which the amount spent on plans showed the least rate of change. B)
asked by Allyson 
Calculus
what is the equation of the tangent line that passes through X^(1/4) + y^(1/4) =4 at the point (16,16) please give the equation
asked by smokey 
science
What is the diffrence bettween mitosis and meiosis in plant and animal cells?
asked by nikiyah 
AP PHYSICS PLEASE HELP
A basketball player makes a jump shot. The 0.700 kg ball is released at a height of 1.90 m above the floor with a speed of 7.00 m/s. The ball goes through the net 3.10 m above the floor at a speed of 3.70 m/s. What is the work done on the ball by air
asked by DUE TOMORROW NEED HELP! 
math
Sevnetyeight players entered a single elimination tennis tournament.How many matches were played to determine the overall champ? please help me...and if u get the answer can you explain how you got it with a rule or a pattern
asked by Katherine 
math
The present value of the money in your savings account is $420, and you're receiving 3% annual interest compounded monthly. What is the future value in two months?
asked by Anonymous 
Statistics
For each of the following samples that were given an experimental treatment, test whether these samples represent populations that are different from the general population: A. a sample of 10 with a mean of 44. B.a sample of 1 with a mean of 48. The
asked by Barbara 
biology
Characteristics that give birds the energy they need to fly long distances are a. strong breast muscles and wings. b. aerodynamic feathers and lightweight bones. c. divided ventricle and air sacs in lungs. d. endothermic metabolism and fused bones. C?
asked by Lily 
physics
A projectile is fired horizontally from a gun that is 95.0 m above flat ground, emerging from the gun with a speed of 250 m/s.
asked by Rebecca 
math
you invest 1000$ at an annual growth intrest rate of 5%.how much money will your investment be worth in 20years?
asked by lilly 
math
How many different combinations of coins can total exactly $0.40? I got 31 possible combinations
asked by Jamie 
Trigonometry
1. (cotè+1)(cscè1/2)=0 2. sin²ècos²è=1+cosè
asked by Dee 
chemistry
the solution contain 6 grams of caustic soda dissolved per dm.find the percentage impurity
asked by ahmed 
Chemistry
What reagent would allow you to distinguish between AgNO3 and MNSO4? (As if using an analysis scheme)
asked by Molly 
chemistry
What is the concentration of hydroxide ions in a solution of .31 M sodium acetate (NaCH3COO)? (The Kb for sodium acetat is 5.6 x 10^10.)
asked by Max 
Physics
When a driver applies brakes to keep a car going downhill at constant speed and constant kinetic energy, the potential energy of the dar decreases. Where does this energy go? Where does most of it go with a hybrid vehicle?.
asked by Melijo 
math
is this correct? 19  8 < 12 would the number 8 make this number sentence true?
asked by shy 
math
Rex is taking three friends for a ride in his new car. one friend can sit in front with Rex, and two can sit in back. If Rex always drives, how many seating arrangements of two passengers in back and one in front are there in his new sport car?
asked by Anonymous 
physics
A Ferris wheel rotates at an angular velocity of 0.20 rad/s. Starting from rest, it reaches its operating speed with an average angular acceleration of 0.029 rad/s2. How long does it take the wheel to come up to operating speed?
asked by michelle 
Precalculus
how would you solve this equation? please help! (x/2)LOG 7 = LOG 5  xLOG 5
asked by Lizzy 
history
what checks and balances does president, Congress, and the judiciary have on the bureaucracy. Which techniques are used most often, and which are most effective and why? Respond to at least two of your classmates' postings
asked by Lateefa 
biology
Which of the following are three common characteristics of echinoderms? a. tube feet, circulatory system, body symmetry b. marinedwellers, endoskeletons, watervascular system c. bilateral symmetry, ossicles, respiratory system d. mouths, protosomes, body
asked by Lily 
general science
Which of the following is an example of homogeneous mixture? b. a typical soil sample c. a glass of orange juice d. a bottle of vinegar
asked by sherrie 
Economics
Hi guys, I'm having a lot of trouble with this question. Maybe I should have paid attention more, too late now though. If anyone could help or point me out in the right direction, I'd really appreciate it! Thank you. Here is what the paper says "Your
asked by Andrew 
calculus
Q1) find the derivative of cos(e^(x^4sin(x))) Q2) If d/dx (f(4x^5))=7x^2 calculate f'(x)=
asked by Lily 
science
A 60.0 kg skier rides a 2710 m long lift to the top of a mountain. The lift makes an angle of 14.5° with the horizontal. What is the change in the skier's gravitational potential energy?
asked by Miley 
Physics help
A 1.0 kg object is suspended from a vertical spring whose spring constant is 105 N/m. The object is pulled straight down by an additional distance of 0.25 m and released from rest. Find the speed with which the object passes through its original position
asked by david 
Math
Tina had no money until she received her pay from her boss. Afterward, she spent 7.50 dollars on food every day from Monday through friday. She spent 30 dollars on clothes and 25 dollars to repair her bike. If she had 40.50 left over what would be a
asked by Mark 
college algebra
What is the fundamental theorem of algebra of this polynomial in completed factored form? and how do I graph it? f(x)=x^5x^4+x^3x^2+x1
asked by lori 
math
Betty buys 16 balloond for her friend. At the rate given in the sign below how much does she pay in $ and cents A dozen ballons for $4.80
asked by Cody 
Thermochemistry Ap Chem homework
Any help would be great, even if it is just a way to start or a formula. Calculate the heat necessary to convert 10.0 g of water (just melted) at 0 degrees Celcius to water at 20 degrees Celcius, assuming that the specific heat remains constant at 1
asked by Chris 
chemistry
In the emission spectrum of hydrogen, some lines are in the infra red range. h l Suggest an electron transition (specify n and n) that is in this range and calculate its corresponding wavelength and delta E.
asked by help 
english
I'm writing my essay on the book Edward's eyes and my essay is about the three types of themes in the book. The first theme is about the closeness of a familys relationship to each other. How would I write my topic sentence for my first paragraph. I'm
asked by heather 
statistics
The first class in a relative frequency table is 5059 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?
asked by Anonymous 
Statistics
When comparing two independent population means, how do I find the degree of freedoms?
asked by jane 
History
When was the evolution of the socio political milieu during the colonial period including Protestant Christianity's impact on colonial social life
asked by Jordan 
chemistry
The Ka of stearic acid is 1.3 x 10^5. what is the Kb of stearate?
asked by Todd 
MARKETING MANAGEMENT
1. DEFINE AND COMMENT ON THE MARKETING CONCEPT. 2. OUTLINE AND COMMENT ON THE ROLE OF MARKETING MANAGEMENT WITHIN THE WIDER CONTEXT OF THE OPERATION OF A BUSINESS ENTERPRISE AS A WHOLE UNIT.
asked by MARY 
English
1. He had to help his grandpa get work. 2. He had to help his grandpa get a job. 3. He had to help his grandpa get a work. (Does #1 have the same meaning as #2? What about #3? If we add 'a' before work, is it correct?)
asked by rfvv 
Algebra
How would I write 12log(7)x as a single logarithm Choices: log(7) x^2/7 log(7) 7x^2 log(7) 7/x^2 log (7) x^2 Thank you
asked by Jesse 
Chemistry
Which atom has a larger atomic radius, Ca or Ra? Why?
asked by Jazmin 
Com170
Analyze why one paragraph was more effective than the other. In my analysis, compare the sentence structure, word choice, punctuation, variety, and the rhythm of both paragraphs. Most consumers understand that a good credit score is vital to one's
asked by Wanda 
college
What do I do to Find dy/dx using logarithmic differentiation. y=(x^3)sqrt(1+(x^2))
asked by Jacy 
math 20 (finance)Please help
At the end of each month, Jacob puts $400 into an account that pays 6%, compounded semiannually. Use your graphing calculator to determine how much Jacob will have after 25 years? Show how you obtained your answer by filling in the following as if it was
asked by Sandi 
chemistry
At 25 degrees Celsius the Ka for a 0.120 mol/L solution of acetic acid (HC2H3O2 ) is 1.8 X 105. determine the pH of the acetic acid solution
asked by kneLl 
algebra
i have very little information in my math book on the following questions. can you either tell me the answer or a link where i can find my own answer. thanks How do you know if a quadratic equation will have one, two, or no solutions? How do you find a
asked by Donni 
Environmental science
What policies would be recommended to Italy or germany assuming their desire to acheive a sustainable society
asked by juanita 
9th grade
how do you do linear functions?...for ex.xy=6..whats the answer?
asked by taylor 
chemistry
The quantum numbers: n = 1, l = 0 and ml = 0 ; can occur together to specify an orbital
asked by Natalie 
Math
Use an addition or subtraction formula to write the expression as a trigonometric function of one number, and then find its exact value. (tan(π/2)+tan((2π)/3)) / (1tan(π/2)tan((2π)/3)) Answer=__________ Exact value answer=_________ ~Thank you.. I
asked by Shaun 
chemistry
What reagent would allow you to distinguish between FeCl3 and PbCl2? (As if using an analysis scheme)
asked by Molly 
marketing
you work in the marketing department of a small sportswear and accessories, but a proposal to diversify into sports shoes is under consideration. your marketing director asks you to write a report on the advantages and disadvantages of entering the sports
asked by Anonymous 
physics
Two cars have a headon collision.Both were traveling at 37 m/s toward each other.Car A has a mass of 432 KG.Car B has a mass of 90 KG. After impact,car A is moving backward at 3 m/s. What car B's velocity after impact?
asked by Mayte 
english
What do you think about this situation? What is the assessment of this scernario Talk with a 22 year old male student and school athlete, plays water polo, about adapting while recovering from a broken pelvis. He feel he will lose his edge during recovery
asked by flame 
English
Hi I have to do a presentation on the graphic version of the novel "Kidnapped" by Robert Louis Stevenson. I plan on doing a powerpoint (it's on tuesday ahh). I was wondering what key points i should mention and describe. Please help, I am stressing over
asked by Jon 
college
What type of goods is most often produced in a traditional economic system? aheavy industrial machinery btextiles cagricultural products
asked by lynn 
algebra
x^2+3x12=0 I need to factor this and thought I knew how, but I can't figure this one out. Factors of 12 are 1,12; 2,6; 3,4 and when I subtract these I don't get the 3 I need for the 3x. Am I overlooking something? My other problems were easy, so I don't
asked by meg 
science
A 60.0 kg skier rides a 2710 m long lift to the top of a mountain. The lift makes an angle of 14.5° with the horizontal. What is the change in the skier's gravitational potential energy?
asked by Miley 
physics
A rubberband has mass 8.5g. The spring constant is 13.0. The rubberband is pulled back 3.4 cm. What is the velocity when rubberband is let go?
asked by Reid 
data
In how many ways can 12 prizes be divided between 2 people? (combination question)
asked by help!! 
AlgebraPlease check my answer
y= 6x is written as: Choices y = log(6)x x = log(6)y I chose y = log(6)x, correct?I did the inverse so x = 6^x isolate y so it becomes y = log(6)x
asked by Jesse 
8th grade
At Smart Middle School students are required to take 7 classes each grading period. At the end of each grading period a student is assigned a final grade (A, B, C, D or F) for each class for the grading period. A student’s overall grade point average for
asked by Anonymous 
physics
a 2 liter bottle rocket has a thrust phase on .25 sec. The rocket goes straight up, reaches its apex, then plunges straight down. Total time is 8 sec. How do I calculate height, velocity and acceleration???
asked by karen 
grammar
mark each verb used in bold and in parentheses, identifythe specific tense used in this sentence: "Keeping a grade point average of 2.0 is very important when attending AXIA school for four consult courses in order for financial aid to continue paying your
asked by Anonymous 
AP Government
I have a few question I need answered, if anyone could help I would really appreciate it... 2. All Presidents but one have been a. Protestant b. Catholic c. Evangelical Christian d. Atheist e. Hare Krishna 16. A mid term election is a. A Congressional
asked by Pablo 
Chemistry
The weak acid HQ has a pKa of 4.89. calculate the [OH] of .50 M HQ.
asked by Harry 
Chemistry
What reagent would allow you to distinguish between BaS and NiSO4? (As if using an analysis scheme)
asked by Molly 
chemistry
If a solution appears to be violet, what range of wavelength would you use for analysis of the solution? How about if the solution was bluegreen?
asked by Jenna 
Physics
A projectile is fired at an upward angle of 25.0^\circ from the top of a 310 m cliff with a speed of 220 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)
asked by Linda 
COMMERCIAL LAW
1. WHAT ARE THE MAIN REQUIREMENTS FOR A VALID CONTRACT; 2. WHAT IS THE DIFFERENCE BETWEEN AN OFFER AND AN INVITATION TO TREAT AND WHY IS THE DIFFERENCE IMPORTANT;
asked by MARY 
8th grade science
1.) How does reading across a periodic table compare and contrast with reading down a group on the periodic table?
asked by jess 
geometry
one radius of a circle is 4 meters long. How long would a different radius of the same circle be?
asked by iya 
math
You have a loan for $150,000 at 5% on a 30year mortgage. You plan to pay off your loan in 10 years. Do you want your loan to be figured using the Rule of 78 or the Unpaid Principle Balance Rule?
asked by Anonymous 
Science
A rollercoaster will be going at a speed of 36 m/s through a loop. To make sure the riders don't experience acceleration greater than 20 m/s2, what should be the radius of the loop?
asked by Jocelyn 
Statistics
For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size 3.
asked by Barbara 
english
The mortals are the pygmalion and Aphrodite in the myth of pygmalion is that right? help me please.
asked by marie 
Chemistry
Explain, in terms of subatomic particles, the difference between S32 and S34
asked by lisa 
college algebra
What is the fundamental theorem of algebra of this polynomial in completed factored form? and how do I graph it? f(x)=x^5x^4+x^3x^2+x1
asked by lori 
chemistry
what happens to the loosely held electrons when each ion is heated in the flame
asked by natty 
math
There are 25 students in math class. 15 students are female. What percent of the class is female
asked by Joe 
economics
Can you help me describe National Debt in 2 paragraphs?
asked by Marissa 
adult education
Given Data: Total Sales: $912,500 % of customers that take discounts: 40% % of customers that do not take discounts: 60% # of days that cusomers who take discounts pay by: 10 Days # of days that customers who do not take discounts pay by: 40 Days # of days
asked by Brandye O'Conner 
math
solve for x: 2xcubed+18x=15xsquared
asked by rachel 
Environmental science
If You need to feed a village of 100 people and you have only 10 seeds,what would you do
asked by Daniel 
chemistry
For n = 2, one of the values of l is 0
asked by Natalie 
AccountingJournal Entry
Sales for the month were $650,000, 85% of sales were on account. Gross margin is 40% of sales.
asked by Thara 
chemistry
An unknown weak monprotic acid with the general formula HA has a Ka=5.5 x 10^7. what is the value of the equilibrium constant that describes the following reaction? A +H2O = HA +OH
asked by Stacey 
Fine Art
2. A process that uses grease and water to reproduce many prints is called a. lithography b. relief c. screen printing d. intaglio A? 4. ______ describes the lightness or darkness of a color. a. Hue b. Intensity c. Value d. Unity C? 5. When gathering
asked by mysterychicken 
physics
a body of mass 20 kg suspended from a rigid support is rotated on a cylinder of d=20cm calculate moment of force above the axis of cylinder
asked by dtehseen 
6th grade
find the unit rate it snows 15cm in 3 hours You pay $53.00 for boks
asked by tora 
English
what are two important influences on langston hughes. how did these things affect his work?
asked by Antuan 
English
1. What are they like? They are brave. 2. What is their presonality like?  They are brave. (Are the questions and answers right and the same?) 3. It is shaped like a fish. 4. They are shaped like fish. (Are both grammatical? What is the part of speech of
asked by rfvv 
Math
At Smart Middle School students are required to take 7 classes each grading period. At the end of each grading period a student is assigned a final grade (A, B, C, D or F) for each class for the grading period. A student’s overall grade point average for
asked by 78908 
Math
I am less than 100, the sum of my digits is 8. If you divide me by 2, I am an even number. My tens digit and my ones digit are the same. What is the answer
asked by Alberto 
chemistry
The red line in the Helium spectrum is longer than the red line in the hydrogen spectrum. What does that tell us about the distance between n2 and n3 in helium as compared with the distance between n2 and n3 in hydrogen?
asked by help 
Physics
the motion of two students Mac (starts @ 2m) and Tosh (starts @ 12m)  as they enter and exit the school library during a passing period determine the sppeds at which the two students move than determine how much faster the fastest student moves thatn the
asked by Mary 
Spanish
Need help with this activity: Imagine that in your backpack you have several writing implements, all of which are the same size: 2 lápices, 5 bolígrafros, 3 marcadores. If you pull one out at random, what is the percent probability that it will be a
asked by mysterychicken 
accounting
Give arguments in favor of following statement. “FIFO method for inventory valuation may increase income tax due as well as showing true financial position of a business with respect to inventory during the period of rising prices.”
asked by pinki 
chemistry
what happens to the loosely held electrons when each ion is heated in the flame
asked by natty 
healthcare mgtcollege
You are a new administrator at a hospital, the icu & er are suffering a shortage of respiratory therapists, you need to gather information for a meeting with them, what information do you need before the meeting? develop a tactical plan, what are the major
asked by angie 
English
1. They shape clay like an apple. 2. Clay is shaped like an apple. (Is #2 the passive form of #1?)
asked by rfvv 
english
For english i need to write a paper of the the slang words used during the civil war. I already have many examples but i cant seem to find history or facts about it. am information that you know would be helpful like origin, history,who came up with the
asked by hannah 
9th grade algrebra
Question 21 (Essay Worth 8 points) [2.08] The formula for degrees Celsius is: C = 9 over 5 (F − 32), where F stands for degrees Fahrenheit. Part 1: Solve the formula for F. Show all steps. Part 2: Determine how many degrees Fahrenheit 2 degrees Celsius
asked by Anonymous 
chemistry
How many moles of negative ions are in 33.7 g of AlF3?
asked by bobby 
college
The CIO of ABC Health Care wants you to develop an organizational chart for the HIM Department. The chart should portray the groups under each unit and any other staff that work within the various departments. Use the ABC Health Care HIM organizational
asked by Debra 
English
I really hope you can have a look at the following sentences. 1) My father worked as a production manager (?) for a famous confectionary company. His job involved making new chocolate pralines. 2) My mum works shifts (does shifts?). She is taking the 9 to
asked by Franco 
Math Precalc
could someone please help me solve this problem... e^x  12e^(x)  1
asked by Alex 
PHYSICS
If a goalie faces an 80mph slap shot hit from 40 feet away, how much time is there before puck arrives at the net (5280ft= 1 mile) If the goalie requires half of the above time to complete his move to deflect the puck, how much time does the goalie have to
asked by JJ 
AP Chemistry
What is the equation for Pour A Rainbow?
asked by Mick 
Chem I
Calculate the pH of two buffer systems to compare the differences in pH. One contains 1.0 M NH3 and 3.0 M NH4Cl. (Ka of NH4+, is 5.6x10^10). The other contains 1.0 M NH3 and 5.0 M NH4Cl. (Ka of NH4+, is 5.6x10^10).
asked by Natalea 
physics
please help me!! i need to explain what is the easiest angle to lift an object. to use as less newton as possible/ the object will lay on surface that i can state its degree/ the degree that requiers the lowest force needed is 26.91 i found it but my
asked by moti 
english
we're the one and only primo exemplary, boisterous in a fun groove and rapturous in our own fascinating way. check parallelism???? tnx
asked by maya 
Geometry
Please imagine a triangle here. >.< the 'o' is a person and the two peaks are the mountains. /\___/\ _\___/ ___o Explain why the distance between these two peaks are greater than the difference of the distances from the person to each peak.
asked by jen 
8th grade science
1.) How does reading across a periodic table compare and contrast with reading down a group on the periodic table?
asked by jess 
chemistry
we add 100 ml of water at 20 degrees celcius to 10g of an unknown substance which is at 50 degrees celcius. The water ends up at 25 degrees celcius. how much heat was transfered?
asked by Anonymous 
chem
i had posted this question about a week ago and had gotten help from bobpursley(thank you so much btw) but i was showed how to do it using an equationa and now when im studying for the test i realize i need to be able to make a conversion factor to solve
asked by hannah 
English
Posted by rfvv on Monday, November 15, 2010 at 8:41pm. 1. What are they like? They are brave. 2. What is their presonality like?  They are brave. (Are the questions and answers right and the same?) 3. It is shaped like a fish. 4. They are shaped like
asked by rfvv 
Chemistry
Name these compounds (^these are symbolize subscripts) 1. CoCl^3 2. CrF^6 3. AgBr 4. Fe^20^3 5. CrF^3 6. TiCl^4
asked by David 
science
If Sally is pulling a toy car with mass of 20g with a force of 7N, what is the car's acceleration?
asked by klk 
Chem
Determine the number of moles of silver chloride formed when three moles of sodium chloride are reacted completely with silver nitrate
asked by JJ 
calculus
use &e to prove the following lim x^29/x+3 = 6 x>3 please help me i really need help:( the & stands for delta and e stands for epsilon
asked by pinki 
trig
secant theta = square root of seven over two and cosecant theta is less than zero
asked by Anonymous 
Life Science
Is interphase a step of mitosis or a preparation of mitosis? Then explain what interphase does.
asked by Bridgett 
Math
How do you get the general term for a sequence that has increasing common differences? For example: 1,2,4,7,11
asked by Emily 
Gr.12 Data Mangement!!!!
In how many ways can 12 prizes be divided between 2 people? (combination question)
asked by nonono help! 
chemistry
For all deexcitations that result in the visible spectrum of hydrogen, what is n ?
asked by help 
English
Hi I am doing an article on why I think humans should not eat meat from the perspective of a parent with a child. I need three solid arguments for this; please help.
asked by Serena 
internet rtesearch
If you are using the Internet and Web resources for a business publication, under which conditions is it not necessary to include a citation?
asked by ron 
Science
Does blood bring cell things like oxygen and digested food?
asked by Mark 
biopsychology
Explain to little brother or sister how neours and synapses work
asked by mike 
Human Resources
Name three selection tools that you would consider using to hire a police officer.
asked by Jonathan 
science
Are all materials in 3d why or why not?
asked by jason 
math
Two composite numbers greater than 10 who GCF is 1
asked by Demtrius 
Critical Reading
Elaborate comparisons which are used by advertisers are usually a. fallacies of evidence b. fallacies of language c. newsworthy I am not very sure, I would guess b?
asked by Michelle 
algebra
What is x/3=7/6
asked by Sue 
english
In the story of pygmalion and galatea what mortals are involved? Can you explain what they mean . ?
asked by marie 
9th grade algebra
Find the value of x so that F(x)=23 I can't figure this out? Could someone help? Thanks.
asked by Allyson 
social studies
What did the northern states want when the 13 new states wanted to change the Articles of Confederation to a Constitution?
asked by Eliot 
8th grade science
What experiments or activities are unacceptable to do with seeds
asked by Daniel 
math
5 + _____< 15, 19  _____ < 12, and 27 + _____ > 30... need to find 3 whole numbers that make each of these number sentences true.
asked by shy 
math
Sevnetyeight players entered a single elimination tennis tournament.How many matches were played to determine the overall champ? please help me...and if u get the answer can you explain how you got it with a rule or a pattern
asked by Katherine 
com 156
i understand that media has changed our culture by making things easie to access and that we have became more reliable on the internet. even after reading my chapter i still do not understand what they are expecting me to put for how it has changed
asked by ruby 
algebra
which of the following is true about the polynomial f(x) = x3 + 9x2 + 24x + 16 ? a. 1 is a zero b. 1 is a zero c. 2 is a zero d. 2i is a zero
asked by Math is TOUGH 
Math
a deck of cards haa 52 cards. in it has 4 of {aces,2,4,3,4,5,6,7,8,9,10,queens,kings,and jacks well you know} what is the probability of getting 4 aces at a time? express your answers as a common fraction. ps. the answers 4/52 or simplfied is not the
asked by Cindy 
7th grade
unable to get a book on frankenstein for homework tonight need answers on these questions. what do the three men tell the judge? who did they murder in the water? who is responsible and how did they do it? what happens to frankstein when he sees the dead
asked by Susan 
business
describe why it is important to consider each domain in the study of adult development
asked by Sue 
math
jared spent 76 dollars in june. In july he spent 1/5 more money than he did in june which procedure can be used to determine the money he spent in july add 1/5 abd 75 multiply 1/5 abd 75 then add 75 multiply 1/5 and 75 divide 1/5 by 75 then subtact the
asked by Abby 
math
the boiling point of water is 100 degrees celsias or 100 lttle zero c.what is this tempature in degrees fahrenheit?
asked by lily 
Statistics/Math Please Help
When comparing two independent population means, how do I find the degree of freedoms?
asked by jane 
Chemistry
How would the electronegativity and first ionization energy values of lithium compare with the same values of oxygen? Why?
asked by alicia 
math
Betty buys 16 balloond for her friend. At the rate given in the sign below how much does she pay in $ and cents A dozen ballons for $4.80
asked by Cody 
math
having a little trouble following the steps to complete this problem. Rewrite each expression with a positive ration exponent. Simplify if possible: 16^3/4
asked by marco 
math
what is linear measure and precision
asked by Brianna 
Algebra
What is the simplified form of the expression? (y^5)10 5 and 10 are exponents
asked by Daniel 
music
what the definite for music
asked by michele 
algebra
4/7+n/12 what is n
asked by bubba 
algebra
how do you get the ordered pair (22,28) from the equation: 2a+b=16?
asked by teri 
Critical Reading
A useful strategy for identifying and analyzing arguments consists of 1) underlining all signal words 2) locating the conclusion, and 3).. a. locate premises b. identify all bias words c. locate fallacies I think it is c?
asked by Michelle 
8th grade
On the last school day of the first grading period Michael learns his final grade for each class. If order is not important and we know he has earned at least 1 of each of the 5 letter grades, what is the total number of combinations of 7 final grades (one
asked by Anonymous 
Math
Rae runds a mile 20 times. Her average time is 5.2 mins. She wants to drop her slowest time 5.8 mins and find the ew average. Write and equation to find are her new average running time
asked by Abby 
math
If the perimeter of a shape is 16 what would be the equation for the perimeter of this shape
asked by Parris 
edu 310
What are the major issues that perpetuated the evolution of the American education system in the United States? How did they impact the changes that have taken place
asked by Anonymous 
math
You've received an invoice for $3,000 with terms of 3/10, 1/20, n/30. How much will you have to pay if you pay the bill in 12 days?
asked by Anonymous 
3rd
what is a good number sentence with two expressions that equal each other?
asked by shy 
Prealgebra
So 7t = 98. What is t?
asked by Abby 
poetry
What is the meaning of the phrase "steal the secret of the sun"
asked by Katrina 
Math
Andy and Cathy run for class president. There were 598 votes but 36 of the votes were with drawn. How would I write an equation that could be use to find n the number of votes that represent a tie?
asked by Mark 
English
Franscisco thanked to the driver to get work. (Is this a correct sentence?)
asked by rfvv 
media and culture
i know that media convergence is taking things and making putting it together as one service. like bundling cable internet and phone. but i do not get how this has impacted our culture!
asked by ruby 
Science
If James pushed a box with the acceleration of 25 m/s2 with a force of 50N, what is the mass of the box?
asked by klk 
Debating help
between order and freedom? why order is considered more valuable than freedom? vice versa?
asked by Anonymous 
Science
Does blood bring cell things like oxygen and digested food?
asked by Mark 
Science
Does blood bring cell things like oxygen and digested food?
asked by Mark 
Science
Does blood bring cell things like oxygen and digested food?
asked by Mark 
algebra
ãx8y5
asked by chris 
math
Sevnetyeight players entered a single elimination tennis tournament.How many matches were played to determine the overall champ? please help me...and if u get the answer can you explain how you got it with a rule or a pattern
asked by Katherine 
CHEM
What reactions does Br have, ones that would distinguish it as a anion? As in a anion analysis scheme?
asked by Molly 
social studies
Island country in the Pacific Ocean that was owned as an imperialist colony of Great Britain in the 1800's?
asked by tony 
English
The man said,"I want you to weed this garden." (This garden seems to belong to the man.) Q: What did the man want Francisco and his grandpa to do? 1. He wanted them to weed a garden. 2. He wanted them to weed the garden. 3. He wanted them to weed this
asked by rfvv 
English
1. I lied that you were a fine gardener. 2. I told him that you were a fine gardener. 3. I lied and told him that you were a fine gardener. ( #1 plus #2 is #3? Right?) 4. I lied. 5. I told him that you were a fine gardener. 6. I lied and told him that you
asked by rfvv 
math
The first angle of a triangle is 24 more than the second. The third angle is twice the first. Find the measure of the angle of the triangle.
asked by dan 
Math
Originally priced ar 35 dollars now on sale for 25% find an proportion to find d. d/35 = 25/100
asked by Abby 
5th grade science
blank a type of material that tries to prenent the flow of thermal energy.
asked by brittany 
math
y=3x+2 x 3 2 1 0 1 2 3 y 11 8 5 2 1 4 7 Two question Where is the slop in the equation? How can you tell the slope in the table
asked by john 
math
(2/hn^9)^2
asked by Daniel 
math
(2/5n^9)^2
asked by Daniel 
math
What is the solution of the given equation? 12;8t=96?
asked by Jessica 
MATH HELP ME 1st
find the mean. 46,33,0,11
asked by lily 
materials
are all materials in 3d?
asked by jason 
math
when might you want to use a scale on a graph that does not start at 0
asked by Katherine 
social
indira gandhi twenty principals
asked by Anonymous 
math
(y plus 5)y^2  5y plus 25)
asked by will 
math
(y plus 5)y^2  5y plus 25)
asked by will