Questions Asked on
April 21, 2013

Statistics
The amount of rainfall in January in a certain city is normally distributed with a mean of 4.2 inches and a standard deviation of 0.5 inches. Find the value of the quartile Q1
asked by Sennie 
Math
Kevin has 18 unit cubes. How many different rectangular prisms can be built using all the cubes
asked by Rebecca 
Chemistry
A solution contains 0.022 M Ag and 0.033 M Pb2 . If you add Cl–, AgCl and PbCl2 will begin to precipitate. What is the concentration of Cl– required, in molarity, when A. AgCl precipitation begins? B. AgCl precipitation is 99.99% complete? C. PbCl2
asked by Sally 
physics 70
A .275 kg. object is swung in a vertical circular path on a string .850 m. long. A) What are the forces acting on the ball at any point along this path? B) Draw freebody diagrams for the ball when it is at the bottom of the circle and when it is at the
asked by Annette 
algebra 2
During the first part of a trip a canoeist travels 26 miles at a certain speed. The canoeist travels 8 miles on the second part of the trip at a speed 5 mph slower. Total time is 3 hours. What was the seed on each part of the trip
asked by bob 
physics
Sophia exerts a steady 40N horizontal force on a 8kg box resting on a lab bench. The box slides against a horizontal friction force of 24 N. Show that the box accelerates at 2 m/s2.
asked by Cassie 
algebra 2
what is the value of the rational expression below when x is equal to three? 17+x/x+2
asked by asia 
physics
A different scaffold that weighs 400 N supports two painters, one 500 N and the other 400 N. The reading in the left scale is 800 N. What is the reading in the righth and scale?
asked by Cassie 
Geometery
Composite figure finding area. Is this right my answer I came out with is 323.5 cm? Rectangle: A=22cm x 17cm = 374 (Long side is 22cm, Width is 17cm.) Triangle: A = 1/2 x b x h A = 1/2 x 19cm ( no height given) So then, I added the rectangle and trinagle
asked by Cole 
Chemistry
What [PB2+] should be maintained in Pb(NO3) to produce solubility of 1.0*10^4 mol PbI2/L when PbI2 (s) is added? Ksp for PbI2 is 7.1*10^9 I can't figure it out...
asked by Joe 
Chemistry
A concentration cell consists of the same re dox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the un known concentration for the following cell. Pb(s)  Pb2+(aq, ?)  Pb2+(aq, 0.1
asked by Steven Gomez 
Physics
A pot of water is boiling under one atmosphere of pressure. Assume that heat enters the pot only through its bottom, which is copper and rests on a heating element. In two minutes, the mass of water boiled away is m = 2.5 kg. The radius of the pot bottom
asked by <3 
physics
Two speakers are wired to emit identical sounds in unison. The wavelength in air of the sounds is 6 m. Do the sounds interfere constructively or destructively at a point 10 m from both speakers? 1. Destructively 2. Neither 3. Constructively
asked by Emily 
geometry
AB has a length of 5 cm the line segment is dilated to produce A'B' which has a length of 2 cm what is the scale factor of the dilation
asked by Dannelle 
Chemistry
Write an equation that represents how dihydrogen phosphate ion (H2PO4) behaves as an Arrhenius acid. ( Be sure to include the correct charges for ions.)
asked by Michelle 
Calculus
A University of Rochester student decided to depart from Earth after his graduation to find work on Mars. Before building a shuttle, he conducted careful calculations. A model for the velocity of the shuttle, from liftoff at t = 0 s until the solid rocket
asked by Emily 
Chemistry
Write an equation showing that calcium hydroxide acts as an Arrhenius base in water. **(I'm not sure where to start or how to go about this question)
asked by Michelle 
Math
Sarah was cutting fabric for a quilt. She cut a strip of fabric that was 19 1/8 inches long into 5 equal pieces. When she was finished cutting Sarah had a piece that was 2 1/4 inches long. How long was each piece that she cut for the quilt?
asked by aly 
AP tatistics
A horticulturist wishes to estimate the mean growth of seedlings in a large timber plot last year. A random sample of n = 100 seedlings is selected and the oneyear growth for each is measured. The sample yields = 5.62 cm. The known standard deviation for
asked by Ann 
Financial Accounting
Wings Inc., a software development firm, has stock outstanding as follows: 25,000 shares of cumulative 1%, preferred stock of $40 par, and 50,000 shares of $120 par common. During its first four years of operations, the following amounts were distributed
asked by Stacey 
Math
Heather deposits $3000 into an account that pays simple interest at a rate of 2% per year. How much interest will she be paid in the first 3 years?
asked by Tiera 
Chemistry
A concentration cell consists of the same re dox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the un known concentration for the following cell. Pb(s)  Pb2+(aq, ?)  Pb2+(aq, 0.1
asked by David 
Calculus
Find the exact area below the curve y=x^3(4x)and above the xaxis
asked by Mike 
Math
The elevation of the surface of the Dead Sea is 424.3 meters. In 2005, the height of Mt. Everest was 8,844.33 meters. How much highernwas the summit of Mt. Everest?
asked by aly 
Algebra 2 ..
Simplify. 1. (1/log base 3 of 60)+ (1/log base 4 of 60)+ (1/log base 5 of 60) 2. (log base 16 of x)+ ( log base 4 of x) + (log base 2 of x)=7
asked by Anonymous 
chemestry
Given the equation C2H4(g)+3O2(g)>2CO2(g)+2H2O(l)+1411kJ, how much heat is released when 8.00g of O2 react?
asked by Haily 
physics
A 85 kg polevaulter falls from rest from a height of 6.4 m onto a foamrubber pad. The polevaulter comes to rest 0.48 s after landing on the pad. (a) Calculate the athlete's velocity just before reaching the pad. m/s downward (b) Calculate the constant
asked by Kat 
HARD CHEM QUESTION
A chemical system within a sealed 1 L reaction vessel is described by the following reversible reaction equation: 2H2S(g) 2H2(g) + S2(g) If the equilibrium constant is 0.000 004 200 at 1103 K find: the reaction quotient initially.
asked by scilover 
Math
A cell phone company offers two different plans. Plan A: Monthly fee of $28 30 free minutes $0.45 per additional minute Plan B: Monthly fee of $40 No free mins $0.25 per additional minute Determine the time in the mins that results in the same monthly
asked by Simitha 
Chemistry
Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 4.00*10^2 mL of solution and then titrate the solution with 0.138 M NaOH. C6H5CO2H(aq) + OH(aq) C6H5CO2(aq) + H2O(l) Find concentration of Na+ at equivalence
asked by john 
AP chemistry
A concentration cell consists of the same re dox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the un known concentration for the following cell. Pb(s)  Pb2+(aq, ?)  Pb2+(aq, 0.1
asked by David 
Physics (G and g)
Please, I need help with this problem. I would really appreciate it. The top of Mt. Everest is 8850 m above sea level. Assume that sea level is at the average Earth radius of 6.38×106 m. What is the magnitude of the gravitational acceleration at the top
asked by Kathy 
American History
Which of the the following was true about the African Americans who moved to California during the mid1800s? A) They were allowed to testify in court until 1870. B) They were very successful. They mined, established businesses and built schools. C) They
asked by bubbie 
Chemistry
Please help!:( What mass of copper would be produced by the reduction of copper(II) ions during pas sage of 1 ampere of current through a solution of copper(II) sulfate for 89 minutes?
asked by Steven Gomez 
General Chemistry
"How would you prepare 150. mL of 0.1M sodium hydroxide given a stock solution of 3.0M NaOH?" I made calculations and figured the process would be to dilute 5 mL of the 3.0M NaOH to 150. mL. Is this correct? For the ideal 150. mL of 0.1M NaOH, I calculated
asked by Emily 
physics
Show that the acceleration of a hamster is 5 m/s2 when it increases its velocity from rest to 10 m/s in 2 s.
asked by Cassie 
Physics
What is the momentum of a wavelength= 0.015nm Xray photon? p= in kg*m/s Please help I am confused. Thank you.
asked by Laila 
trig
Two tracking stations are on the equator 135 miles apart. A weather balloon is located on a bearing of N 37 degrees E from the weastern station and on a bearing of N 19 degrees E from the eastern station. How far is the balloon from the weastern station?
asked by Taylor 
physics
A canoe of mass 38 kg lies at rest in still water. A man and a woman are at opposite ends of the canoe 4.0 m apart and symmetrically located with respect to the canoe’s centre (which is also its centre of mass). The mass of the man is 65 kg and the
asked by Anonymous 
Chem
Citric acid (H3C6H5O7) is triprotic acid which reacts with NaOH according to the balanced chemical equation shown below what volume of 0.200m Naoh is required to titrate 7.50ml of lemon juice which is 0.245 m in citric acid? H3C6H5O7+3NaOH>Na3C6H5aO7+
asked by Ray 
Trig
A plane has a speed of 250mph and flies with a bearing of N35degE. The wind is blowing from the west at 25 mph with a heading of due east. What is the actual speed and heading of the plane? Round to one decimal place.
asked by Nancy 
college
a guy wire 27 feet long runs from the top of the pole to a spot on the ground. I f the height of the pole is 6 feet longer than the from the base of the pole to the spot where the guy wire is anchored, how tall is the pole?
asked by Anonymous 
5th grade math (word problems)
Mrs. Jones bakes pies. She always cuts each pie into 8 slices. Ther are 13 slices left on the counter. How many pies are on the counter? (write as mixed number). work: 13/8 = 1 5/8 pies. Is this correct?
asked by Alex 
trig
A kite is in the shape of a quadrilateral with two pair of congruent adjacent sides. The lengths of two sides are 20.0 inches and the lengths of the other two sides are 35.0 inches. The two shorter sides meet at an angke of 115 degrees. A. Find the length
asked by Anonymous 
Chemistry
Find the entropy change of the universe when 2 mol of water freezes at 10 degrees celsius.
asked by Linda 
Physics
A closed box is filled with dry ice at a temperature of 81.5 C, while the outside temperature is 27.4 C. The box is cubical, measuring 0.307 m on a side, and the thickness of the walls is 4.47 × 102 m. In one day, 3.37 × 106 J of heat is conducted
asked by <3 
physics
A 5.00meter steel beam of uniform cross section and composition weighs 100 N. What is the minimum force required to lift one end of the beam?
asked by Anonymous 
physics
Show that the average speed of a rabbit that runs a distance of 30 m in a time of 2 s is 15 m/s.
asked by Cassie 
Data Mangement Math
Paula moves to an area with a different telephone exchange. Telephone numbers in the new exchange start with 753, and all combinations of the four remaining digits are equally likely. a) Calculate the probability that the last four digits in Paula’s new
asked by Maame 
physics
A foam plastic ( sg = 0.58 ) is to be used as a life preserver. What volume of plastic must be used if it is to keep 20 % (by volume) of a 75 kg man above water in a lake? Average density of a man is equal to 1.04 g/cc. Assume the foam plastic’s top
asked by ynna 
Life orientation
Name two community organizations that are involved in supporting or giving redress to these factors.explain how these community organizations are involved in redressing these issues.
asked by Mthokozisi 
chemistry
A 2.5 g sample of NaOH (Mw = 40.00) was dissolved in water to give a solution of final volume 250 cm3. (i) With reasons, state whether NaOH is a strong or a weak base. Give the conjugate acid of NaOH and decide whether this conjugate acid is acid, alkaline
asked by LUx 
Statistics
A production process produces an item. In a recent study, the company found that 20% of all items produced were defective. Each item is inspected before being shipped. 10% of the items were misclassified( labeled as defective when they were good or labeled
asked by Richard 
physics 52
A car rounds a banked curve where the radius of curvature of the road is R=100m., the banking angle 10 degrees and the coefficient of static friction is .10 (slippery conditions). A) Determine the range of speeds the car can gave without slipping up or
asked by Annette 
Chemistry
Write the product for the reaction when dichlorine oxide (Cl_2O) reacts with water (the product will have only one equivalent of chlorine in it).
asked by Michelle 
CHEMISRTY
Calculate the energy required to raise the temperature of 160.0 g Ag from 273 K to 295 K.
asked by Tonya 
physics
A canoe of mass 38 kg lies at rest in still water. A man and a woman are at opposite ends of the canoe 4.0 m apart and symmetrically located with respect to the canoe’s centre (which is also its centre of mass). The mass of the man is 65 kg and the
asked by Anonymous 
Chemistry
Find the entropy change of the universe when 2 moles of water freezes at 10 degrees celsius. The delta G for the freezing of water at 10 degrees celsius is 210 J/mol and the heat of fusion of ice at this temperature is 5610 J/mol.
asked by Linda 
Life orientation
in 1015 lines critically discuss 5 ways in which teenage pregnancy problem imparts on the community. provide relevant source to support your claims
asked by Busi 
math
a football team gained 12 yards on one play, lost 40 yards on another and gained 34 yards on the last play of the first half. they had already gained 345 yards during the half. what was the total yardage gain for the first half?
asked by amanda 
Chem
Solubility of Silver(I) Carbonate is 3.2x10^2 g/100mL What is the Ksp? I'm getting 2.19x10^12 But it's not in the answer sheet
asked by Viv 
Physics
Sophia exerts a steady 40N horizontal force on a 8kg box resting on a lab bench. The box slides against a horizontal friction force of 24 N. Show that the box accelerates at 2 m/s2.
asked by Cassie 
Physics
A convex lens of focal length 2.5 cm is placed 4 cm from a small object of height 4 cm. Use a ruler and construct the image. Is the image real or virtual, upright or inverted? What is the image distance? What is the height of the image? What is the
asked by Emily 
AP World History
I have to analyze how subSaharan Africa & south & southeast Asia's relationship to global trade patterns changed from 1850 to present. please help !
asked by Kaitlyn 
calculus
limx→4 4x^2−15x−4/x−4.
asked by lisa 
trig
A pole is braced by two wires that extended from the top of the pole to the ground. The lengths of the wires are 16 feet and 18 feet and the measure of the angle between the wires is 110 degrees. Find, to the nearest foot, the distance between the points
asked by Anonymous 
Biology
When making comparison of sequences where some are whole genome sequences while others are partial genome sequences, or a specific glycoprotein sequence, How is it that we are able to make comparisons from these sequences if they all have different
asked by Cristian 
physics (Newton"s law of gravitation)
Could anyone please help me with this problem? I would really appreciate it. The top of Mt. Everest is 8850 m above sea level. Assume that sea level is at the average Earth radius of 6.38×106 m. What is the magnitude of the gravitational acceleration at
asked by Kathy 
Grammar (Ms. Sue)
Some of the underlined pronouns in the following sentences are incorrect. On your paper, revise each sentence that contains an error. If the pronoun is used correctly, write "correct." 1). HORSE is a game that is often played by my friend and I (
asked by Anonymous 
Physics
The left end of a 1kg, 1.0 m long uniform thin rod is attached to a pivot, about which it can rotate freely. A force F is applied at the right end of the rod at 30 degree angle to hold the rod stationary in a horizontal position. What is the magnitude of
asked by gina 
math
Bibi wants to send invitations to some of her friends to come to her birthday party. She has contact information for 37 friends stored on her phone, but she only wants to invite 21 of those people to her party. She tries to send out a message to the 21
asked by hi 
Chemistry
Assign oxidation states to all atoms in each of the following. explain the order in which you determine the oxidation states for each element if applicable. a)O2 b)HSO4 c)Na2HPO4 d)CrCl3
asked by Juan 
Chemistry
What is the solubility of Ca3(PO4)2 in 0.045 M of CaCl2
asked by Roderick 
life orientation
identify and describe 3 environmental health hazards that cause ill health,accidents,crises and disasters within South Africa and globally.
asked by tshiamo 
pre calc
Use the sumtoproduct formula to simplify the expression: If sin 52 + sin 8 = sin A, 0
asked by dylan 
life orientation
5 ways in which the human or environmental problem impacts on the conmunity
asked by siphe 
math
x^2+16xy+y^28=0 Write the appropriate rotation formulas so that in a rotated system the equation has no x'y'term
asked by Fabiola 
Algebra
As a promotion, a store draws the name of a customers each week. The prize is a coupon for the store. If winner is not present at drawing, he cannnot claim the prize and the amount of the coupon increases for the next weeks drawing. the function f(x)=
asked by Dylan 
Physics
Photons of energy 12eV are incident on a metal. It is found that current flows from the metal until a stopping potential of 8.0V is applied. If the wavelength of the incident photons is doubled, what is the maximum kinetic energy of the ejected electrons?
asked by Laila 
Calculus
Graph the parametric equations: x=cos(t) y=sin(t) z=cos(2t) How would I go about solving this problem? thanks!
asked by Anonymous 
math
Take an 17 by 11inch piece of paper and cut out four equal squares from the corners. Fold up the sides to create an open box. Find the dimensions of the box that has maximum volume. (Enter your answers as a commaseparated list. Round your answer to three
asked by emily 
Social Studies... :( help me
Between 1800 to 1860, how long did the slaves work on the cotton field daily?
asked by Omario 
PLEASE HELP CHEM!!
5.6 x 106 mol of A and 5 x 105 mol of B are mixed in a 200 mL flask. The system is represented by the equation: 2A(G) + B(G) 3C(G) At equilibrium, there is 4.8 x 105 mol of B. Calculate the value of the equilibrium constant.
asked by scilover 
math
Evaluate the following with thought the use of a calculator: Sin70.sin25 + sin65.sin20 And please people explain how you arrived in your answer Lots of love, timmy
asked by timithy 
Music
How did music in the sixties represent/reflect the political and social climate? 3 ways.
asked by Kristy 
Chemistry
Calculate the H3O+ ion concentration and the pH at the equivalence point when 45.0 mL of 0.4000 M NH3 is mixed with 45.0 mL of 0.4000 M HCl. Ka=5.6x1010
asked by john 
Economics
Which of these products or services is likely to have an inelastic supply in the short run? A. cargo ships B. haircuts C. newspapers D. staples
asked by Tori Madison 
chemistry
Identify the limiting reagent. 2.43g of magnesium is added to a solution containing 0.100 mol hydrochloric acid t ok produce hydrogen gas.
asked by Amy 
english
i have been asked to correct the sentence would you please assist : 1.when will you eat are you not hungry
asked by R S Telagathoty 
chemistry
A 32.0g sample of water at 290. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
asked by David 
physics
A solid disk of radius 6.50cm and mass 1.65kg , which is rolling at a speed of 2.60m/s , begins rolling without slipping up a 10.0 slope.How long will it take for the disk to come to a stop?
asked by Lauren 
Chemistry
4, Assign oxidation states for the two elements in the compound OF2. Explain the rules that you use. 5. For each of the following oxidationreduction reactions of metals and nonmetals, identify the element that is oxidized and the element that is being
asked by Juan 
chemistry
What is the solubility of Ca3(PO4)2 in 0.06 M of K3PO4
asked by Roderick 
Life Orientation
Identify one environmental or human factor that causes ill health or accidents or disasters within your community or any other community within South Africa.
asked by Lungelo 
Life orientantion
Identify one environmental or human factor that causes ill health.
asked by Mbally 
US History
I Need Help to Start my Thematic Essay, Theme is change Throughout united states history individuals other than presidents have played significant roles that led to changes in the nations economy, government, or society. I need help to restate this for my
asked by Lupe 
grammar
What part of speech is the word run in the following sentence? I have a run in my hose.
asked by kara 
chemistry
in relation to the pH of pure water at 25 degree Celsius where do the pH values of acid fall
asked by Alex 
precalc please help me
If cos^4 3 x  sin^4 3 x = cos (g(x)), then g(x) = ??. For part (b), use a^4b^4=(a^2b^2)(a^2+b^2)!
asked by dylan 
Science
Are the ions of a metal very different from the atoms of a metal?
asked by M. 
english
Book: Information you’ll need to cite a book Example Powell, Kevin, ed. Step into a World: A Global Anthology of the New Black Literature. 2nd ed. New York: Wiley, 2000. 1. Author(s) or Editor(s) last name, first name, middle is any, followed by a
asked by jesse 
mathematics
Find the smallest prime number N such that the following is true: The largest prime factor of N−1 is A; The largest prime factor of A−1 is B; The largest prime factor of B−1 is 7.
asked by Sambaran G. 
math
Three students, Chris, Vlad, and Steve, are registered for the same class and attend independently of each other. If Chris is in class 80% of the time, Vlad is in class 85% of the time, and Steve is in class 90% of the time, what is the probability that at
asked by Lindsay 
Subject:life orientation
What are the institutions/community organizations tha are involved in supporting or giving redress to these disasters of hiv and aids.explain how these organizations are ivnolved in providing a safe and healthy environment.
asked by Anonymous 
rrational function
find the vertical asympotate f(2x)/x^24
asked by Anonymous 
Computer Programming
I am trying to put the following in Python Code. I know how to do it mathematically, but code  not sure where to start. A state creates license plates that each contain two letters followed by three digits. The first letter must be a vowel ( A, E, I, O, U
asked by Sheryl 
wesley
there will be a coin toss to determine the winner of the $5 million prize. You are offered $100,000 for your ticket right now. What would you do?
asked by m 
L.o
Identify one environmental or human factor that causes ill health?
asked by Vutivi 
Math
What is the distance on the ground between 2 posts when the posts are attached to a platform that is 6 feet square and attached with 15 degree brackets? The posts are either 10 foot or 12 foot. Please answer for both.
asked by Gina 
English
What are the shifts in meaning of the word "Conquest"?
asked by Thomas 
Life orientation
Identify and describe 3 enviromental health hazards that cause ill health,crises and disastres within your community or any other community within south africa and globally
asked by Kgantsho 
Grammar (Ms. Sue)
Complete each sentence below, using an objective pronoun. Then, tell how each pronoun is used in the sentence. 1). Skipping rope is a good form of exercise. Some athletes use (?) in their training. 2). My sister loves to jump rope. It gives (?) a chance to
asked by Anonymous 
life orientation
Recommendations How to address hiv/aids
asked by Anonymous 
life oringtation
in 10 to 15 lines what are 5 ways in which the human or environmemt problem impacts on the comunty
asked by khomotso 
life oringtation
in 10 to 15 lines what are 5 ways in which the human or environmemt problem impacts on the comunty
asked by khomotso 
pre calc
(cos3x)^2+(sin3x)^2=cos(f(x)) find f(x)
asked by dylan 
agricultural science
outline and explain the objectives of fencing a farmland?
asked by katlego mbobo 
agricultural science
outline and explain the objectives of fencing a farmland?
asked by katlego mbobo 
precalc
(cos3x)^4+(sin3x)^4=cos(g(x)) find g(x)
asked by dylan 
agricultural science
outline and explain the objectives of fencing a farmland?
asked by katlego mbobo 
accounting
Cindy Lou makes $30,000 per year as an exempt employee. She worked 15 hours of overtime in the month of September. Payday for wages earned in the month of September is October 7. Ignoring Federal and State income tax withholdings, how much would she
asked by Anonymous 
sew
A chemical substance that causes dyes to set is called?
asked by brianna 
Physical Science
When will an object float on a fluid's surface? My answer: An object will float on a fluid's surface if only the object is less dense than the fluid?
asked by Anonymous 
life orientation
what are the institutions/community organization that are involved in supporting or giving redress to these disasters? And how are these organizations are involved in providing a safe and healthy environment?
asked by edgar 
Life Orientation
Explain 5(or more)factors that contribute to the substance abuse of both Legal and Illegal drugs among the youth
asked by Millicent 
Math (Statistics)
Two Cards are drawn without replacement from a deck of 52 cards. What are the odds in favor of drawing two honour cards (A,K,Q,J,10)?
asked by Josh 
Science
When will an object float on a fluid's surface? My answer: An object will float on a fluid's surface if only the object is less dense than the fluid?
asked by Anonymous 
Calc
HOW TO INTEGRATE : 2π∫x√(1+4x^2exp(2x^2)) Thank you,
asked by 999 
Life orientation
Discuss ways poverty in the community/in schools problem impacts
asked by Berry 
maths
how many square tiles each with side 20cm must be used for a square flooring with sides 10m
asked by Wesley Frederick 
precalc
(cos3x)^4+(sin3x)^4=cos(g(x)) find g(x)
asked by dylan 
precalc
(cos3x)^4+(sin3x)^4=cos(g(x)) find g(x)
asked by dylan 
Chem
A mixture of He Ne and 3rd gas exhibit a total pressure of 486 mm hg if the partial pressure of He125mm mm hg and partial pressure of Ne is 214mm hg what is the mole fraction of the 3rd gas in container
asked by Ray 
science
comets orbit the sun in a what pattern
asked by yy 
L.o
Which are the two institutions that help to redress air pollution?
asked by Phindile 
chemistry
If 10.4 liters of O2 at STP are produced by the electrolysis of water, how many coulombs of charge were required?
asked by sarah 
Math
How do you find the total number of maximum and minimum points of the function whose derivative is given by f^1(x)=x(x3)^2(x+1)^4 ???
asked by Maddie 
Chemistry
calculate the ph 25.00 mL solution of 0.125 M acetic acid (Ka= 1.75 x 10^5) after the addition of each of the following volumes of 0.100 M KOH: 10.00 mL, Vep and 35.00 mL
asked by yoo 
physics (Newton's law of gravitation)
Can anyone please help me with this question? I am really confused. A neutron star and a black hole are 2.400e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030
asked by Kathy 
math
1000 [? ] 81 [?] 190 = 10 use BODMAS method
asked by ninjini 
Life Orientation
What 5 ways which the human or environmental HIV/AIDS problem impacts on the community?
asked by Zanele 
Calculus
Find the area of the region. f(x) = x^3 g(x) = x^4 In the graph f is above g and they both intersect at (1,1)
asked by Katie 
Calculus
Graph the parametric equations: x=cos(t) y=sin(t) z=cos(2t) How would I go about solving this problem? thanks!
asked by Anonymous 
English
What is the last step for planting potatoes? 1. It is to water well. 2. Water well. 3. It is "Water well." (What is the suitable answer for the question?)
asked by rfvv 
English
Who often joins Sony's family for dinner? 1. Anton's family often joins Sony's family. 2. Anton's family often join Sony's family. (Which one is correct? Do we have to use 'join' or 'joins'?)
asked by rfvv 
math
Give 0.7ml of metoclopramide syrup very six hours anwer 1 tsp oral syringe with 1 ml marking Who help
asked by Fai 
English
1. At the dacha, what does Sony's family grow? 2. At the dacha, what do Sony's family grow? (Which question is correct?) 3. They grow vegetables like potatoes and tomatoes. 4. Sony's family grow vegetables like potatoes and tomatoes. 5. Sony's family grows
asked by rfvv 
statistics
To get an A grade on the test, you need a total score of more than 16 points. One of the students knows the correct answer to 6 of the 20 questions. The rest she guesses at random by tossing a coin (one toss per question, as in 4B). What is the chance that
asked by AmmanJordan 
Life orientation
Recommandation on how to address hiv/aids
asked by Lisneth 
MATH
Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. (Enter your answers as a commaseparated list. Enter EMPTY or Ø for the empty set.) {1, 4, 8} union {3, 7, 9}
asked by JESSICA 
Physics (Electric charge for charged rods)
I need help with this question, please. What is the direction of the force between (a) two particles whose charges are the same sign and (b) two particles of opposite sign? (c) What happens to the magnitude of the force when the distance between two
asked by Kathy 
Physics (Electric fields and Coulomb's Law)
I need help with this question please. An ion harvester is scouring deep space for isolated xenon (Xe+) ions. A xenon ion is singly ionized, and has a charge of +e. If the field meter reads 0.000000202 N/C, how far away is it from the ion? _________ m
asked by Kathy 
physics (Newton"s law of gravitation)
Please, can someone help me with this? A neutron star and a black hole are 2.400e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030 kg. What is the magnitude of
asked by Kathy 
chemistry
Determine how much of each product (in g or L) is formed. 2.50g of aluminum metal is placed in a large container of concentrated copper (ll) suflate to produce copper metal.
asked by Amy 
Science
Joe pushes a lawn mower four times as far as Mary while exerting only half the force, who does more work? And by how much?
asked by Tara 
English
At the end of the play, Mrs. Popov and Smirnov appear to be in love. Considering what has happened in the play, why is this ridiculous?
asked by Linnie 
Maths
Given that on average, an atom of gold weighs 3.27×10^−22grams, how much does an Avagadro’s number of gold atoms weigh (take Avagadro’s number to be 6.0221415×10^23).
asked by Katie 
math numerical methods
Consider the following second order differential equation: y"2x^(2)y+y^(3)=17cos(4x) with y(0)=4 , y'(0)=9 If we let u=y and v=y′ then as an AUTONOMOUS first order system, the second order differential equation is correctly expressed as:
asked by mahdi 
environment
What are the two institutions/community organizations that are involved in supporting or giving redress to these disasters of hiv and aids?
asked by Pretty 
Calculus
Find the derivative of f(x)=ln(e^(2x)/((x^24)^3) Please show detail so I can use for reference. Thanks!
asked by Rene 
physics
A neutral solid conducting cylinder rotates about its axis with angular speed 1600 rad/s. In addition, there is an external magnetic field of induction B directed along the cylinder's axis. What must the magnitude of the magnetic field in Teslas so that
asked by help 
physics
The velocity of sound in the atmosphere is c=300 m/s. An airplane is traveling with velocity v=600 m/s at an altitude of h=8 km over an observer. How far horizontally past the observer in kilometers will the plane be when the observer first hears
asked by help 
Math
How many hours does it take for the hour hand to travel as far as the minute hand travels in 40 minutes?
asked by Liz Marie 
Math
How many hours does it take for the hour hand to travel as far as the minute hand travels in 40 minutes?
asked by Liz Marie 
Life orientation
10 ways in which the environmental health hazard can impact on one's health
asked by Nhlanhla 
pre calc
(cos^2)3x+(sin^2)3x=cos(f(x)) simplify expression and find f(x)
asked by dylan 
Life orientation
What impact causes by cancer on the teenager?
asked by Njenje 
pre calc
((cos^4)6x)(sin^4) 6x=cos(g(x)) find g(x)
asked by dylan 
math
To select a _________ sample, the population is divided into disjoint subgroups according to some characteristics like income level, and then a few individuals are selected randomly from each of the subgroups to be in the sample. (Points : 1) (May choices
asked by tammy 
english
does the word "from" get capitalized in a title?
asked by david 
math
y=x+1 x+y=3
asked by JIMOH 
psychology
KINDLY GIVE ME 2 PARAGRAPHS, WHY BRAIN IS IMPORTANT?THANK YOU
asked by PLEASSSEEE HELP MEE 
Geometery
Trapezoid. A = (5+4) x 11/2 = 49.5 Long side is 11 in. bottom base is 4 in Correct? Or you need more info?
asked by Cole 
ladysmith secondary
Discuss 5 ways How does human or environmental problems impact on the community
asked by Nicole 
English
What are the shifts in the meaning of the word "CONQUER"? How can they be characterized and what might account for these changes? Thank you
asked by Thomas 
organic chemisty
write raction of benzoic acid with propylamine
asked by chemistry 
Electric charge and Coulomb's Law
Can anyone help me explain this problem? Your help is appreciate it. You are given an apple and an orange. The apple has a net charge of +3×10−17 C. The orange has a net charge of −3×10−17 C. With only this information, can you determine which one
asked by Kathy 
Electric fields and Coulomb's law
Can anybody please help me with this question? Two friends are playing a version of proton golf where the hole is marked by a single proton. The first friend reads his meter, and declares he has a field strength of 27.5 N/C. The second friend looks at her
asked by Kathy 
Electric fields and Coulomb's law
Please, I need help with this question. An ion harvester is scouring deep space for isolated xenon (Xe+) ions. A xenon ion is singly ionized, and has a charge of +e. If the field meter reads 0.000000202 N/C, how far away is it from the ion?
asked by Kathy 
Calculus
Find the derivative of the following: f(x)=ln(e^(2x)/(x^24)^3 Please show all steps so I can follow Thanks!
asked by Sean 
Calculus
Use logarithmic differentiation to find the following derivative y=(x+6)^4/(x5)^6. Please show all steps so I can follow for future understanding. Thanks.
asked by Sean 
Calculus
Use logarithmic differentiation to find the derivative of the following: y=x^x^2 x>0 Please show all steps so I can following for future understanding
asked by Sean 
Science
Doe sodium chloride completely dissolve,partially dissolves or insoluble
asked by Muofhe 
Science
Doe sodium chloride completely dissolve,partially dissolves or insoluble
asked by Muofhe 
Advanced Functions/Trig
Prove the following: sin(x+y)sin(xy) = cos^2 (y)  cos^2 (x)
asked by Zack 
math
how many ways could somebody make a house rectangular house if she used 23 connecting cubes?explain
asked by damyia 
chem!
You work with the following system: 2X(g) Y(g) At, equilibrium, [Y]=3[X]. If K=10, calculate the [Y] at equilibrium.
asked by scilover 
math
Find the distance around the track if x=20 feet and y=25 feet
asked by Paula 
algebra 12
what is a natural number?
asked by kara 
Physics
A long straight horizontal bar vibrates in a ver tical direction with a frequency of 1.50 Hz on the surface of a large tank of water. The vibrations of the bar cause plan e waves to travel across the surface of the water. The waves are described by the
asked by Meder 
Chemistry
What are the Six possible ratios for the equation for the formation of potassium chloride?
asked by Jerry 
Chemistry
What are the Six possible ratios for the equation for the formation of potassium chloride?
asked by Jerry 
Writing: Word usage
What do you call a side result of something? As in A caused B (the intended result) and A also caused C (an unintentional result that occurred, but was beneficial)?
asked by Cicilia 
math
A polynomial f(x) has degree 8 and f(i)=2^i for i=0,1,2,3,4,5,6,7,8 . Find f(9).
asked by me 
Math
If Ethan ate 4 times as many cookies as Daniel who at 2 times as many as Courtney how many cookies did Ethan eat if Courtney ate 2.
asked by Ben 
math
1/2x+1/3y=7 1/2x+2y=4
asked by tesha j w 
chemistry
what is the h+ of a solution with a ph of 10 at 25 degree celsius
asked by Alex 
chemistry
what will be the internal pressure causes by hydrogen gas when 5.00 g of zinc is dissolved in 50 g of concentrated hydrochloric acid if the volume of the container is 250 mL and the container is allowed to cool 20 degrees celcius
asked by Danielle 
For the function defined by...HELP
For the function defined by f(x)=3x^2+5x+2, find the following values. (a) f(4)= (b) f(x)= (c) f(x)= (d) f(x+h)=
asked by Karlee 
Math
what is a exponential notation?
asked by Anonymous 
Music
How was rock a revolutionary and democratic music?
asked by Kristy 
real estate finance
Sue is appraising a property using the cost approach. The and (if vacant) has a value of $90,000. The house was built in 1982, has 2300 square feet and she has estimated it has an economic life of 90 years. The replacement cost on this type of construction
asked by tmouery 
physics
A block of mass m = 7.0 kg is dropped from a height H = 46.0 cm onto a spring of spring constant k = 2360 N/m (see the figure). Find the maximum distance the spring is compressed.
asked by Anonymous 
social studies
what is one power given to the state government in the Constitution?
asked by michy 
Chemistry
Calculate the H3O+ ion concentration and the pH at the equivalence point when 45.0 mL of 0.4000 M NH3 is mixed with 45.0 mL of 0.4000 M HCl. Ka=5.6x1010
asked by john 
eco,
Suppose that a vegetable vendor pays 7% interest daily on a $10 loan. Then, suppose that this individual was able to save $0.50 per day by drinking less tea. Calculate the number of days it would take for the vendor to no longer need to borrow money in
asked by kiril 
maths
if a=3+2root2 then find the value of a square 1by a square?
asked by tuhituhi 
fractions
what is 4 2/8 plus 5 6/7.
asked by abigail 
management for organization
Which of the following theories belongs to the modern era of management? (Points : 1)
asked by stephanie 
math
Will someone please help me solve this problem. Solve and Check 3x^2=2x=5
asked by timothy 
Solving an Equation in one variale
If x
asked by Jerrie 
math
I need help solving this problem please. Solve the equation. (x2)(2x+1)=0
asked by meka 
Solving an Equation in one variale
If x belongs Z, Solve the equation sq.rt(1) + sq.rt(2) + sq.rt(3) + .......... + sq.rt(x^) + sq.rt(x^+1) + sq.rt(x^2+2) = 5190
asked by Jerrie 
Math
If a Ferris wheel has a 64 m radius and the center ot the wheel is 84 m above the ground, what is the height of a carriage above the ground starting from 0 degrees to 360 degrees?
asked by Natalie 
Microeconomics
Is leisure time considered an inferior good when the substitution effect dominates? I think that the answer is yes because if you are willing to work more hours in order to make more money than you do not value leisure time that much. Is this correct?
asked by Hannah 
Math
Square root of 512rs^6 * square root of t^3
asked by Avinash 
Computer Science
What is the fastest way to compare two strings containing only numbers. eg: "3423492349328492343.939842903482304" "349832498234932.92384924893294343" There can be at max 20 numbers before and after the decimal place. The majority will be around 20, however
asked by David 
mathematics
4 distinct integers p, q, r and s are chosen from the set {1,2,3,…,16,17}. The minimum possible value of p/q+r/s can be written as ab, where a and b are positive, coprime integers. What is the value of a+b?
asked by Sambaran G. 
mathematics
What is the largest 3 digit divisor of N=1024^3−639^3−385^3?
asked by Sambaran G. 
social studies
Why did pilgrims travel? a. to fight a holy war b. to organize followers c.to pay tribute to a king d. to visit holy places
asked by becca 
mathematics
Suppose f(x) is a degree 8 polynomial such that f(2^i)=1/2^i for all integers 0≤i≤8. If f(0)=a/b, where a and b are coprime positive integers, what is the value of a+b?
asked by Sambaran G. 
Chemistry
Propose buffer components to hold a pH of 3.5, let the acid have a concentration of 0.1 M show all work
asked by Roderick 
Chemistry
Propose buffer components to hold a pH of 9.5, let the base have a concentration of 0.1 M show all work please
asked by Roderick 
Chemistry
what happens to a battery when it is "recharged"
asked by Juan 
Math
Roulette is a well known game in which a mechanical device randomly selects one of 38 equally likely numbers. IF a player decides to play by choosing a number, he gains $35 if his number is selected by the device. If any other number is selceted he loses
asked by Kayla 
Biology
How many daughter cells will one cell have after 3 complete meiosis processes? Answer A) 8 B) 12 C) 16 D) 64
asked by Kim 
math
prove nC(r1) + (n+1)C(r1) + (n+2)C(r1)+ ... +(n+k)C(r1) = (n+k+1)Cr
asked by nCr 
Physics
So if mgh=1/2mv^2 and I'm solving for v is my answer going to be v= squareroot of 2* (gravity) 9.8m/s^2* (height) 3.67m?
asked by Kay 
nyoike
producea java program which when given 3 sides of a triangle determines whether the traingle is an equilateral an issosceles or a scaline
asked by henry 
social studies
The main work of representatives in a parliament is a.running trials b.trining an army c. kkeeping the peace d.making laws
asked by Becky