Questions Asked on
October 9, 2010

Physics
My answer was 19.8 cm but it was incorrect. A basket of negligible weight hangs from a vertical spring scale of force constant 1500 N/m. If you suddenly put a 3.00 kg adobe brick in the basket, find the maximum distance that the spring will stretch.
asked by . 
math
For a fair coin tossed three times, the eight possible simple events are HHH, HHT, HTH, THH, HTT, THT, TTH, TTT. Let X = number of tails. Find the probability distribution for X by filling in the table showing each possible value of X along with the
asked by Anonymous 
chemistry
Na3PO4(aq) + AlCl3(aq) produces? Complete and balance each of the following equations. If no reaction occurs, write NOREACTION.
asked by Anonymous 
Maths
Among the examinees in an examination 30%, 35% and 45% failed in Statistics, in Mathematics, and in at least one of the subjects respectively. An examinee is selected at random. Find the probabilities that a. He failed in Mathematics only b. He passed in
asked by Neeraj Bhanot 
physics
A moving rod is 12.0 cm long and moves with a speed of 15.0 cm/s. If the magnetic field is 0.800 T, calculate (a) the emf developed, and (b) the electric field in the rod. I got a)0.0132v and b).12v/m
asked by dude 
physics
A 60 kg skier with an initial speed of 12 m/s coasts up a 2.5 m high rise that makes a 35 degree angle with the horizontal. If the coefficient of friction between the skis and the snow is .08, find the speed of the skier when he reaches the top of the
asked by Me 
chemistry
In acidic solution MnO4 oxidizes H3AsO3, a weak acid, to H3AsO4, a weak acid, and is reduced to Mn2+. Write the balanced net ionic equation for this reaction. How many H+ are there in the balanced equation
asked by faith 
statistics
Women comprise 80.3% of all elementary school teachers. In a random sample of 300 elementary teachers, what is the probability that more the 3/4 are women?
asked by Lori 
empirical formula of a compound
if 11.80 g of iron reacts with 5.06 g of oxygen . Determine the empirical formula of the resulting oxide ?
asked by r2rou2a 
Stats
There are four major political parties in the country Treon. A public research group is interested in finding out whether there is any relationship between the party that is supported by a citizen of Treon and that citizen's socioeconomic status. For the
asked by Scott 
Chemistry
What is the number of grams of Hydrogen in 5.45 x 10^22 molecules NH3?
asked by Daniel 
physics
A block is projected up a frictionless inclined plane with initial speed v0 = 8.42 m/s. The angle of incline is è = 58.4°. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?
asked by daisy 
chemistry
In a laboratory experiment, a 18.0 ml sample of NaCl solution is poured into an evaporating dish with a mass of 24.00 g. The combined mass of the evaporating dish and NaCl solution is 37.15g. After heating, the evaporating dish and dry NaCl have a combined
asked by Allyse 
Chemistry
Preperation of a standard solution of sodium carbonate and titration for the equation between hydrchloric acid and sodium carbonate How can i explain the key features of the periodic table relate to the conclusions of the above experiment, i need to
asked by Paul 
math
a. A box contains three white balls and two red balls. A ball is drawn at random from the box and not replaced. Then a second ball is drawn from the box. Draw a tree diagram for this experiment and find the probability that the two balls are of different
asked by Anonymous 
math
A bacteria culture starts with 1,000 bacteria and doubles in size every 2 hours. Find an exponential model for the size of the culture as a function of time t in hours. f(t) = 1
asked by liz 
chemistry
Suppose 70.00 mL of a lithium hydroxide, LiOH, solution requires 55.42 mL of a 0.1050 M solution of propanoic acid, C2H5COOH, for neutralization. LiOH + C2H5COOH ® C2H5COOLi + H2O What is the concentration of the base solution? 0.08313 M 0.1663 M 0.3325 M
asked by hope 
chemistry
Magnesium reacts with HCl to produce magnesium chloride and hydrogen gas. Mg(s)+2HCl(aq)>MgCl2(aq)+H2(g). What is the molarity of the HCl solution if 330 ml of the HCl solution reacts with magnesium to produce 7.40 L of H2 gas measured at STP?
asked by Dana 
chemistry
A sample of an ideal gas at 15.0 atm and 10.0 L is allowed to expand against a constant externam pressure of 2.00 atm at a constant temperature. Calculate the work in KJ for the gas expansion (Boyle's law applies)
asked by alexie 
Chem
Given that Kw = 2.4x10^14 at 37 celsius, compute the PH of a neutral aqueous solution at 37 celsius, which is the normal human body temperature. Is PH = 7 solution acidic, basic, neutral at 37 celsius? Thank you!!!!!!
asked by Kim 
chemistry
What volume of 0.174M Na3PO4 solution is necessary to completely react with 89.1mL of 0.106M CuCl2? 2Na3PO4(aq) + 3CuCl2(aq) produces Cu3(PO4)2(s)+ 6NaCl(aq)
asked by Anonymous 
Chem
A 50 ml sample of 0.025M AgNo3 is mixed with 15 ml of 0.04 M CrCl3. How many grams of AgCl will precipitate? Please show steps
asked by MAX 
Physics
A 21.0kg box rests on a frictionless ramp with a 15.1° slope. The mover pulls on a rope attached to the box to pull it up the incline. If the rope makes an angle of 43.6° with the horizontal, what is the smallest force F the mover will have to exert to
asked by Margaret 
physics
Three blocks are connected on the table as shown below. The coefficient of kinetic friction between the block of mass m2 and the table is 0.400. The objects have masses of m1 = 3.00 kg, m2 = 1.45 kg, and m3 = 1.90 kg, and the pulleys are frictionless.
asked by Amber 
Chem
4C3H5N3O9 > 6N2 + 12 CO2 + 10H20 + O2 a) how many grams of water would be produced if 75 g of nitroglycerin decompose? b) The creation of 3.89 moles of CO2 would require how many grams of nitroglycerin?
asked by MAX 
physical science
Calculate (to the nearest 0.1 u) the formula mass of these compounds. (a) rubidium nitrate, RbNO3 u (b) aluminum peroxide, Al2(O2)3 u (c) water, H2O u
asked by taylor 
Psychology
Samantha is suffering from fatigue and sometimes cannot make herself get of of bed in the morning. She feels that the world is a sad, unhappy place and would like to be relieved of her existence. Dr. Powell and Samantha examine her feelings very closely
asked by Melisa 
Chemistry
An atom contains a total of 29 electrons. When the atom is in the ground state how many principle energy levels will contain electrons? a: 1 b: 2 c: 3 d: 4 How do you figure this out?
asked by danny123 
math
9. An isosceles triangle is drawn with its vertex at the origin and its base parallel to the xaxis. The vertices of the base are on the curve Find the area of the largest such triangle.
asked by calculus 
mla format
For mla formatting an essay how do you write and cite a quote from a book? also, is the quote suppose to be in italics? thanks
asked by roger 
PreCalc
The decibel (dB) is defined as dB= 10log (P2/P1), where P2 is the power of a particular signal. P1 is the power of some reference signal. In the case of sounds, the reference signal is a sound level that is just barely audible.How many dBs does a sound
asked by jj 
physics
A block is projected up a frictionless inclined plane with initial speed v0 = 8.42 m/s. The angle of incline is è = 58.4°. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?
asked by katherine 
CHEMISTRY vapour pressure
Bromobenzene, C6H5Br, and chlorobenzene, C6H5Cl, form essentially ideal solutions in all proportions. At 100°C, the equilibrium vapour pressure of bromobenzene is 137mmHg and that of chlorobenzene is 285mmHg. Calculate the equilibrium vapour pressure
asked by lulu 
college algebra
Kepler’s third law. According to Kepler’s third law of planetary motion, the ratio t^2/r^3 has the same value for every planet in our solar system. R is the average radius of the orbit of the planet measured in astronomical units (AU), and T is the
asked by Rick 
home economics
what are the different careers in home economics
asked by pat 
Chem
The sedative Demerol hydrochloride has the formula C15H22ClNO2. How many grams are in 0.020 mol of Demerol hydrochloride? I got 6.640g is this right?
asked by Jen 
mathalgebra
A launched rocket has an altitude, in meters, given by the polynomial h = vt 4.9t^2, where h is the height, in meters, from which the launch occurs, at velocity v in meters per second, and t is the number of seconds for which the rocket is airborne. If a
asked by Michelle 
empirical formula of a compound
how many grams of Mg combine with 1.50 g of Cl ions in MgCl2 ?
asked by r2rou2a 
Physics
What is the instantaneous velocity of a freely falling object 10s after it is released from rest? What is its average velocity during this 10s interval? How far will it fall during this time? For the average speed I got 50m/s nd for the last one I got 500m
asked by Anonymous 
English
Here are some more sentences I'd like you to check. Thank you very much. 1) He can take a pound of flesh from Antonio on the condition (No: on the condition) that he doesn't shed a single drop of Antonio's blood. 2)News is brought that all of Antonio's
asked by Franco 
home economics
what are the different careers in home economics and their qualifications.
asked by pat 
Psychology
Humanism denies the role of determinism, but elevates the role of: A) suggestion B) positive thought processes C) free will D) Gestalt I believe the answer is "C" free will
asked by Melisa 
English
Would someone look over my paragraph and let me know if and where I need to make improvements In Garrett Hardin's "Lifeboat Ethics", the paragraph that touched me the most is "Overloading The Environment". Hardin talks about India and how the population is
asked by Kayla 
physics
A motorcycle and 66.0 kg rider accelerate at 2.0 m/s2 up a ramp inclined 5.0° above the horizontal. What are the magnitude of (a) the net force on the rider and (b) the force on the rider from the motorcycle?
asked by Karl 
Finance
Please help me out this problem! :) suppose that I buy a 10 yr bond today for $1000 and the interest rate when the bond is issued is 5 percent. the day after I buy the bond, the market interest rate on 10yr bonds rises to 7percent. if I keep the bond for
asked by Tony 
Chemistry
CuSO4 + X h20 > CuSO4 +xH20 ... a 9.6 g sample of CuSO4 was allowed to absorb water. After absorption the sample weighed 15.01 grams. What is the value of x?
asked by MAX 
physics
A block is projected up a frictionless inclined plane with initial speed v0 = 8.42 m/s. The angle of incline is è = 58.4°. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?
asked by koraile 
PreCal
A box with a square base and an open top is constructed from 5400 cm^2 of cardboard. Find the dimensions of the largest possible box. I know the answer is : base lenght  42.4 cm height 21.2 cm please help me, thank you so much :)
asked by Layla 
CHEMISTRY answer check
A 0.386g sample of a protein was dissolved in water and made up to a volume of 60mL at 21.0°C. At this temperature the osmotic pressure of this solution was 1.24mmHg. Calculate the molecular mass of the protein 12682 g mol1 95025 g mol1 9627613 g mol1
asked by lulu 
algebra
the acme widget company has $13,000 available for making widgets. part of the money is spent on an advanced widgetbending machine costing $1,000. the manufacturing cost for each widget is $3. how many widgets can be made with the money available?
asked by rob 
physics
What is the density of an unknown spherical substance with mass of 30 g and radius of 0.35 inches in kg/m3? (density= mass/ volume)
asked by May 
religion
The Middle East is the spiritual homeland for all of the following world religions EXCEPT: a. judaism b.christianity c.islam d.buddhism
asked by cindy 
grammar
correct the errors in the following sentence : My best childhood friend is her
asked by mohammed 
physical science
Volcanoes emit much hydrogen sulfide gas, H2S, which reacts with the oxygen in the air to form water and sulfur dioxide, SO2. Every 69 tons of H2S reacts with 97 tons of oxygen and forms 37 tons of water. How many tons of SO2 are formed
asked by taylor 
physics
1.The speed of a train increased from 15 mi/hr to 25 mi/hr in a distance of 500 ft. Calculate the average acceleration in ft/s2. 2.An airplane taking off from a landing field has a run of 500 m. It starts from rest, moves with constant acceleration, and
asked by jazz 
CHEM FP
The boiling point of water at 735mmHg is 99.073°C. What mass of BaCl2 should be added to 2.28kg water to increase the boiling point to 100.000°C ? Kb for water = 0.510 K kg mol1 2589 g 777 g 734 g 288 g 863 g
asked by lucy 
Reading/novel study
I am reading the novel Hatchet in my class. I am not aloud to take the novel home so that's why I have asked this question: What page is the word keening on in the novel Hatchet? We have read chapters 14 and I need to know what page keening is on. Please
asked by Sara 
Chemistry
Compare the amount of heat required to vaporize a 200.gram sample of H20(L) at its boiling point to the amount of heat required to melt a 200.gram sample ofH20(s) at its melting point.
asked by danny123 
English 2
Need help with this Create an imaginary dialogue between Laotzu and a contemporary high school student in which the student asks for the philosopher's advice. Focus the dialogue on a concrete situation involving school, work, or relationships, and be
asked by mysterychicken 
English Ms. Sue
I would like to know how I could write this in my own words. I wondering if you could help me out because I don't know what to put. Thank you and enjoy the rest of your weekend. Style is known for being the literary element that makes language memorable.
asked by Lauren 
college kinetics chem
what is the rate law for 2OF2 yeilds O2 + 2F2
asked by Anonymous 
Physicsplease checkthis can't be right
I asked about a golf ball hit at a 35 degree angle and the hole was 175 m away. What was speed of ball. I got a response, and it follows with my response. I'm not doing something right, can you help, please.Physics  drwls, Saturday, October 9, 2010 at
asked by Anthony 
physics
motorcycle and 66.0 kg rider accelerate at 2.0 m/s2 up a ramp inclined 5.0° above the horizontal. What are the magnitude of the force on the rider from the motorcycle?
asked by joe 
physics
A tennis ball rolls off the edge of a tabletop 0.800m above the floor and strikes the floor at a point 1.10m horizontally from the edge of the table. 1) Find the time of flight of the ball. 2) Find the magnitude of the initial velocity of the ball. 3) Find
asked by Anonymous 
physics
The driver of a car traveling at 30 m/s needs to quickly reduce the car’s speed to 20m/s to round a curve in the highway. If the car’s deceleration has a magnitude of 6.0 m/s2, how far does it travel while reducing its speed?
asked by lee 
CHEMISTRY molality
a sucrose solution was prepared by dissolving 13.5g sucrose in enough water to make 100ml of solution. the density is 1.050gml. calculate molality
asked by lucy 
physics
A diver running 1.3 m/s dives out horizontally from the edge of a vertical cliff and reaches the water below 2.5 s later. How high was the cliff and how far from its base did the diver hit the water
asked by GEO 
Chemistry
You have a bottle of 20% NaOH. You will use some of it to make a new solution by dilution with water. How musch 20% NaOH is needed to prepare 150mL of 7% NaOH by dilution.
asked by Jennifer 
algebra
a rental car costs $24 per day plus 25 cents per mile. the total trip costs $54. how many miles were traveled if the trip lasted one day?
asked by john 
algebra
it has been found that the world record for the men's 10,000 meter run has been decreasing steadily since 1950. the record is approximately 28.7 minutes minus 0.05 times the number of years since 1950. assume the record continues to decrease in this way.
asked by dean 
chemistry
Ok so im just totally confused because i don't technically have chemistry teacher (i have cancer so i cant go to school so while i have a teacher i can email questions to, he doesnt really help so im stuck teaching myself) & i didn't get any reference to
asked by Ana 
physics
A lead ball is dropped in a lake from a diving board 6.28 m above the water. It hits the water with a certain velocity and then sinks to the bottom with the same constant velocity. It reaches the bottom 5.16 s after it is dropped. (a) How deep is the lake?
asked by monnie 
Maths
From a set of 1000 observations known to be normally distributed, the mean is 534 cm and SD is 13.5 cm. How many observations are likely to exceed 561 cm? How many will be between 520.5 cm and 547.5 cm? Between what limits will the middle 50% of the
asked by Neeraj Bhanot 
chemistry
5.50 grams of nitrogen triiodide are detonated in a closed 7.00 L flask that was under full vacuum initially. The nitrogen triiodide forms nitrogen gas and iodine gas upon detonation. What is the partial pressure of the iodine gas (in Pa) when the vessel
asked by Jazmin 
Stats
Give the numerical value for each of the following descriptions concerning normal distributions by referring to the table standard unit normal distribution for N(0,1) The 5th percentile of N(20,36) Mean and variance
asked by Vee 
Physics
A 10KG block is pulled along a rough horizontal floor by a 12N force acting at a 30 degrees angle with respect to the horizontal. The block accelerates at 0.1 m/s2. Calculate A....... the weight of the block B...... the force of friction acting on the
asked by Esthere G 
physics
An electron with a speed of 1.3 × 107 m/s moves horizontally into a region where a constant vertical force of 4.4 × 1016 N acts on it. The mass of the electron is 9.11 × 1031 kg. Determine the vertical distance the electron is deflected during the
asked by koraile 
physics
A certain force gives an object of mass m1 an acceleration of 13.0 m/s2 and an object of mass m2 an acceleration of 2.10 m/s2. What acceleration would the force give to an object of mass (a)m2 – m1 and (b)m2 + m1?
asked by koraile 
math
After several drinks, a person has a blood alcohol level of 200 mg/dL (milligrams per deciliter). If the amount of alcohol in the blood decays exponentially, with one fourth being removed every hour, find the person's blood alcohol level after 2 hours.
asked by liz 
physics
A certain force gives an object of mass m1 an acceleration of 13.0 m/s2 and an object of mass m2 an acceleration of 2.10 m/s2. What acceleration would the force give to an object of mass (b)m2 + m1? is b) equal to 2.1?
asked by koraile 
physics
A 50 kg boy picks up a 11 kg stereo and raises it 0.75 m from the floor to a tabletop. How much work did he do on the stereo? How much work did he do to raise his own center of mass 0.40 m in the process? I'm assuming you use W=mgy equation but do you
asked by Leah 
physics
An electron with a speed of 1.3 × 107 m/s moves horizontally into a region where a constant vertical force of 4.4 × 1016 N acts on it. The mass of the electron is 9.11 × 1031 kg. Determine the vertical distance the electron is deflected during the
asked by koraile 
physics
The speed of a train increased from 15 mi/hr to 25 mi/hr in a distance of 500 ft. Calculate the average acceleration in ft/s2.
asked by jazz 
math
Find the expected value, ì, for the sum of two fair dice. The probability distribution for the sum of two dice is given in the table. ì = 1 2=1/36, 3=2/36, 4=3/36, 5=4/36, 6=5/36, 7=6/36, 8=5/36, 9=4/36, 10=3/36, 11=2/36, 12=1/36
asked by Anonymous 
algebra
a bread recipe calls for 2/3 cup of rye flour. you only have 3/4 cup on hand. what percent of your original amount of rye flour will remain after baking the bread?
asked by dawg 
algebra
Two planes are 1,400 miles apart. They fly towards each other, one at 125 mph and the other at 175 mph. How long does it take the planes to pass each other (round to the nearest hundredth)?
asked by jason 
Physics
True or false the work done by a nonzero net force on an object, moving on a horizontal plane, is equal to the change in the potential energy of the object? and don't forget to give the correct explanation for my q.
asked by Lydia 
Physics
True or false the work done by a nonzero net force on an object, moving on a horizontal plane, is equal to the change in the potential energy of the object? and don't forget to give the correct explanation for my q.
asked by Lydia 
Spanish
Complete this conversation between two friends, Ana Margarita and Fernando. They are planning to go to a party with a group of students from the United States. Use ir, voy, vas, va, vamos, and van. 1.Ana Margarita: ¡Hola, Fernando! ¿Adónde * ahora? 2.
asked by Christopher 
physics
A truck is traveling at 12 m/s down a hill when the brakes on all four wheels lock. The hill makes an angle θ = 15° with respect to the horizontal. The coefficient of kinetic friction between the tires and the road is 0.7. How far does the truck skid
asked by jamie 
physics
A ball is thrown horizontally at 15 m/s from a clifftop 70 m above the sea level. Find: a) the time to land; b) the angle at which it hits the water; ° below the horizontal c) the speed at which it hits the water. m/s
asked by applebottom 
physics
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.77 m/s. The car is a distance d away. The bear is 17.8 m behind the tourist and running at 6.68 m/s. The tourist reaches the car safely. What is the
asked by Anonymous 
Physics
A ball was thrown with a velocity of 150 ft/ s at angle of 45 degrees above the horizontal. a)Find the range and the time of flight. b)What is the maximum height reached?
asked by lee 
CHEMISTRY molarity
what is the molarity of the solute in the following solution: a 12.5% w/v Co(NO3)2 solution?
asked by lucy78 
buisness and tecnoligy
How can lean manufacturing and nearsourcing help a company gain a competitive edge and prepare for the future
asked by tim 
physics
Can an adult male be rescued from a fall by tying a rope to a car's axle?
asked by CJ 
pHYSICS
A ball is thrown horizontally at 15 m/s from a clifftop 70 m above the sea level. Find: a) the time to land; s b) the angle at which it hits the water; ° below the horizontal c) the speed at which it hits the water. m/s
asked by applebottom 
The scarlet letter amer lit
I have to write an essay for english here is the topic: Identify the protagonist: The critic Randal Stewart has this is say about Hester and Dimmesdale: ..."But hester is not the protagonist,the chief actor,and the tragedy of the scarlet letter is not her
asked by Roger 
chemistry
Chlorine is used to disinfect drink water supplies and pool water. Suppose you have 17.3 L of Cl2 in a cylinder at 1200 torr and 24 C. How many grams of chlorine do you have in the gas cylinder?
asked by Jazmin 
spanish
who understands spainsh???????
asked by Brandon 
7th grade math
An apple has 24 fewer calories than a banana. If 7 bananas have the same number of calories as 10 apples, how many calories are in a banana?
asked by Kory 
algebra
the time that a traffic light remains yellow is 1 second more than 0.05 times the speed limit. what is the yellow time for a trafic light on a street with a speed limit of 30 mi/h
asked by matt 
Chemistry
What volume of 0.5 N nitric acid would be required to completely neutralize 300 ml of 1.0 N sodium hydroxide?
asked by Sara 
MEDICAL BILLING/CODING
DO ANYONE HAVE THE LAYOUT FOR INTERPERSONAL COMMUNICATION GRADED PROJECT I AM STUCK NEED IDEAS
asked by SANDY 
Chem
A titration was performed in which 56 ml of a .022M HCL solution was used to titrate 50 ml of a PB(NO3)2 solution a) what was original concentration of the Pb(NO3)2? b) How many grams of PBCl2 will ppt?
asked by MAX 
physics
An electron with a speed of 1.3 × 107 m/s moves horizontally into a region where a constant vertical force of 4.4 × 1016 N acts on it. The mass of the electron is 9.11 × 1031 kg. Determine the vertical distance the electron is deflected during the
asked by daisy 
Psychology
Psychologists who believe in _________ are most likely to attempt to understand diversity in ethnic background as influence on behavior. A) individual differences B) free will C) determinism D) universal principles I think the answer is "D" am I correct?
asked by Melisa 
US HISTORY
i) Create a timeline tracking the major themes/paradigm shifts in American History from the Columbus's voyages through the MexicanAmerican War (18461848). ii) Include the following in your descriptive analysis: (1) The cultural patterns of the Native
asked by SHADRIEKA 
college
How many milliliters of 0.100 M KOH would you need to titrate 25.0 mL of the oxalic acid solution
asked by Polly 
Chemistry
A titration was performed in which 56 ml of a .022M HCL solution was used to titrate 50 ml of a PB(NO3)2 solution a) what was original concentration of the Pb(NO3)2? b) How many grams of PBCl2 will ppt?
asked by MAX 
english
could you unscramble these letters into two words? TURUENITAPIN
asked by pegs 
Earth Science
Give the latitude and longitude to the centers of these bodies of water: The sea of japan and the indian ocean.
asked by Anonymous 
chemistrycheck answer
I was wondering if someone can tell me if I did this right: The gas constant (R) has many different unit formulations. Convert the value of 8.314 (m3Pa)/(Kmol) into units of (LmmHg)/(Kmol). This is what I did: (8.314 m3Pa/Kmol)*(1 atm/101325 Pa)*(760
asked by Jazmin 
Eng101
The assignment is to write an essay explaining a concept. My teacher is pretty unclear what she means. Any ideas?
asked by Lynne 
math
find a function y=ax^2+bx+c whose graph has an xintercept of 1, a yintercept of 2, and a tangent line with slope 1 at the yintercept.
asked by Emily 
algebra
the final exam in a course will count as 30% of the total. prior to the final exam, 245 points are possible. how many points will the final exam be worth?
asked by paul 
physics
A 10KG block is pulled along a rough horizontal floor by a 12N force acting at a 30 degrees angle with respect to the horizontal. The block accelerates at 0.1 m/s2. Calculate A....... the weight of the block B...... the force of friction acting on the
asked by Bolo 
chemistry
what are the errors in the doubleindicator titration of (sodium carbonate and sodium hydrogen carbonate) against hydrochloric acid, using Phenolphthalein and Methyl orange as indicator? how can I improve the it?
asked by kay 
chemistry
A solution contains 4.46 g KCl in 178 mL of solution. The density of the KCl solution is 1.11 g/ml. What is the percent (m/m) for the potassium chloride solution?
asked by Samantha 
chemistry
I need help.. this one question says explain why the measurement "12.5 * 10^6 centimeters" is written in correctly in scientific notation.. is it because it is not necessary to have the centimeters in there?
asked by ammmyyy 
economics
i want to make my assignment in witch i have to analyze a problem related to any product like sugar (economy wise) and give its solution and also write its substitutes and compliments .please give an example of economic problem of sugar
asked by Nasir 
chemistry
what is the formula of the product form when CH3NH2 reacts eith hydrogen ion?
asked by mano 
Stats
a) IHI insurance is interested in determining whether younger drivers (below the age of 25) are more prone to motor accidents than older drivers (25 or older). A random sample of 70 IHI policyholders below the age of 25 were selected and whether they had
asked by Scott 
gcse science
i need to find 3 examples of using combustion in everyday life and then i need combustion example , fuel used , and is fuel a fraction of crude oil? thankyou for your help:}
asked by ++ LOUISA MAE++ 
spanish
How does this sound? 8 de octubre ¡Hola, Marcia! Mi madre en casa de mis abuelos. No vamos al cine. Yo tengo que pasar la aspiradora y mis hermonos tienen que lavar los platos. Mi dormitorio es desordenada. Hago la cama y arreglo el cuarto. Yo tengo que
asked by Lily 
Reading/novel study
If you don't know what page the word keening is on in the book Hatchet then can you tell me were to find the book online so I can read it online. Thanks!
asked by Sara 
Physics
Can someone help with this calculation, please? A golf ball is hit at a 35 degree angle and the hole is 175m away. What is the speed of the ball necessary to hit the hole? Thank you for any help you can give
asked by Anthony 
physics
A goalie slips and falls to the ground and the opponent's forward, 20 m out in front of the net boots the ball toward the net at a speed of 15.9m/s and an angle of 45 degrees above the horizontal. Does the ball go into the net?
asked by katelyn 
chemistry
if an antacid tablet was dissolved in water would the solution become acid, base or neutral? why?
asked by Anonymous 
chemistry
If 50ml of 0.1M NaOH are mixed with 35ml of 0.1M HCL will the solution be acid, base or neutral? why?
asked by Anonymous 
statistic
o Formulate a hypothesis statement regarding your research issue.? o Perform a regression hypothesis test on the data.? o Interpret the results of your regression hypothesis test.? 11,809 12,009 12,095 12,050 11,671 11,952 11,975 11,774 10,864 11,402
asked by jessika 
Psychology
Dr. Wade excitedly explains that the difference between a male and female is apparent in the structure and function of the brain. She is so pleased that you have asked about her research that she eagerly shares slides of PET scans which support her
asked by Melisa 
english
Okay I figured out my question that I posted before. But can you please explain to me what this means? Style is not applied to writing. It is the writing. I don't understand what that means. Thank You
asked by Lauren 
Physics
i saw this question from physics book, can someone please help me solve this.. thank you.. A man pulls a 500 Newton block up a plane inclined 300 with the horizontal with a force of 300 Newton parallel to the plane. What net force tends to pull the block
asked by May 
Psychology
Behavioral and psychodynamic perspectives differ in that the former emphasizes the____, while the latter focuses on___. A) the blank slate;pattern of traits B) emotional life;objective life C) determinism; functionalism D) observable behavior;inner life I
asked by Melisa 
Math
When adding and subtracting rational expressions, why do you need a LCD?
asked by maryk 
chemistry
Please help by Monday Explain in words how you would prepare 250.0 mL of a 3.000 M solution of Ba(OH)2 starting from solid barium hydroxide and water.
asked by May 
Chemistry
In reflux, water normally enters from the bottom of the condenser and exits from the top. What causes water to be able to rise to the top of the condenser? Also, from the following website, it is stated that in the case of the Allihn condenser, water
asked by annie 
Chemistry
In reflux, water normally enters from the bottom of the condenser and exits from the top. What causes water to be able to rise to the top of the condenser? Also, I read from wikipedia website that in the case of the Allihn condenser, water enters from the
asked by annie 
algebra
a public television station set a goal of $350,000 in pledges during a certain month. the total pledged was $525,000. What percent of the station's goal was reached?
asked by bro 
Physics
When will an object be in equilirium if different forces are acting on the object from the different systems? Would it be appropriate to use F=ma to find the equilibrium?
asked by Maggie 
algebra
the time that a traffic light remains yellow is 1 second more than 0.05 times the speed limit. what is the yellow time for a trafic light on a street with a speed limit of 30 mi/h?
asked by tom 
physics
Let the mass of the block be 7.7 kg and the angle è be 25°. Find (a) the tension in the cord and (b) the normal force acting on the block. (c) If the cord is cut, find the magnitude of the block's acceleration.
asked by daisy 
business law
In what jurisdiction, state and/or federal, and venue will a driver from Florida sue a driver from Washington who collided with him/her in Oklahoma?
asked by Nancy 
chemistry
What is the effect of the following on the separation of the mixture(hexane and toluene)? a. A soluble, nonvolatile impurity b. a decrease in barometric pressure c. an increase in barometric pressure d. rapid heating rate
asked by Anonymous 
Chemistry
Is butyl paraben light sensitive?
asked by ann 
math
jim wants to place carpet in his living room.the dimensions of his living room are 15 3/4 feet by 18 1/8 feet.aprocimately how many square feet of carpet does he need to cover his living room????thanks for helping
asked by jenny 
business math
How long, to the nearest year, will it take an investment to triple if it is continuously compounded at 16% per year?
asked by liz 
math
what'S THE PERCENT OF 136,800,000???
asked by Anonymous 
Chem
Calculate the number of grams in 1.86 moles of K. I got 72.54g is this right?
asked by Jen 
chemistryrecheck answer
I was wondering if someone can tell me if I did this right: The gas constant (R) has many different unit formulations. Convert the value of 8.314 (m3Pa)/(Kmol) into units of (LmmHg)/(Kmol). This is what I did: (8.314 m3Pa/Kmol)*(1 atm/101325 Pa)*(760
asked by Jazmin 
English
Please help me unscramble this word seetar
asked by Quinton 
Health information technology
when the compute service bureau destroys or erases records, should the erasure be verified by the bureau to the physician?
asked by AB 
algrebra
can someone show the steps 6*1/24[23(4*1/23)]=17 in two step equation in algrebra
asked by jethro 
Chemistry
What is the total number of principal energy levels or shells in an atom with an atomic number of 30? and why? (1) 3 (2) 4 (3) 5 (4) 6
asked by danny123 
HIST
Please help me describe the dealings Native Americans had with Europeans before the Pilgrims arrived.
asked by cindy 
algebra
a public television station set a goal of $350,000 in pledges during a certain month. the total pledged was $525,000. What percent of the station's goal was reached?
asked by zac 
math
the lowest and the highest number that will round to .035
asked by cameron 
Physical science
What do you call the phenomenon that causes dispersion of white light when it passes through a triangular prism
asked by Lydia 
Physical science
What do you call the phenomenon that causes dispersion of white light when it passes through a triangular prism
asked by Lydia 
Physical science
What do you call the phenomenon that causes dispersion of white light when it passes through a triangular prism
asked by Lydia 
Chemistry
For a Vibrational Raman, will the S or O branch be at the higher wavelength? For a Rotational Raman, will the S or O branch be at the higher wavelength?
asked by John 
scarlet letter
Hey I need a quote about how Dimmesdale is torment by Chillingworth through hi "mind" thanks:) can you also give the page number?
asked by roger 
English
we are supposed to write this passage from "a midsummer night's dream" in our own words: Set your heart at rest The Fairyland buys not the child of me His mother was a vot'ress of my order And in the spiced Indian air by night Full often hath she gossip'd
asked by Rebecca 
Wisdom Poem
Haha, k, so this is what I got for my "wisdom" poem..I know it's lame, but it's the best I can do. Think it'll do? Treat others the way you would want to be treated And make sure to be pleasant and kind Follow the golden rule and you’ll not be defeated
asked by mysterychicken 
chemistry
Please check this and make sure i did it right.. How many centimeters are in 8534 millimeters? And i got 853 centimeters.. is that right? thanks!
asked by ammmyyy 
6th grade
How do you solve a problem like this ? 16+14=14+w
asked by Lynn 
Maths
5. Compute the two regression equations on the basis of the following data: X Y Mean 40 45 Standard Deviation 10 9 Given that the coefficient of correlation between X & Y is 0.50. Also estimate the value of Y for X=48?
asked by Neeraj Bhanot 
Scarlet Letter  essay  Thesis help
So I am writing about how I agree with this one critic that Hawthorne over used symbolism in the book the Scarlet Letter. My thesis: He stressed the sin by stretching the idea and making it seem like it is a mystical character itself, and allowing it to be
asked by Sally 
Physics
A spring gun launches a ball horizontally from 1.3 m above the floor. the ball strikes the floor 2.2m away, measured horizontally. Calculate A .. the time the ball is flight B... the vertical component of its velocity at the time it strikes the floor C....
asked by Phanel 
Physics
Zandor is being shot out of his cannon (at a velocity of 40 m/s) at an angle of 40 degrees above the horizontal. He is planning to pass through a ring of fire (which is 60 m from where he starts) to the landing pad. How far is the ring of fire from the
asked by katelyn 
7th grade math
An apple has 24 fewer calories than a banana. If 7 bananas have the same number of calories as 10 bananas, how many calories in one banana?
asked by Kory 
math
find 4 consecutive odd integers such that the sum of 7 times the smallest number and twice the largest is 91.
asked by Kory 
English
1) Do we say "The information is correct as of 28 September 2010." or "The information is correct as at 28 September 2010."? 2) "I spoke with him yesterday." or "I spoke to him yesterday."? Someone mentioned to me that both sentences are acceptable but 1
asked by annie 
Staistics
Give the numerical value for each of the following descriptions concerning normal distributions by referring to the table for N(0,1) The 5th percentile of N(20,36)
asked by Vee 
Grammar
Can you find 20 errors in these paragraphs? Why are great numbers of students choosing to pursue their college degrees using their home computers. Benjamin Franklin said; A penny saved is a penny earned”. This principle applies to the american and
asked by Mike Williams 
science
if you are flying a plane at 600 km/h and you jump striaght up, where do you land and why?
asked by sarah 
english
can you help me please with an anecdote.
asked by Anonymous 
7th math
a/7 x 42/a
asked by robbie 
p6
A 5.40 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.510 T pointing up. During the course of 0.130 s, the field is changed to one of 0.300 T pointing down. What is the average induced emf in the
asked by dude 
English
Thank you very much. Can you please check these sentences, too? 1)He should ask a moneylender for a loan. (OR He should get a loan from a moneylender?). 2)He agrees to the loan on condition (OR on the condition??) that if he fails to pay within thirty
asked by Franco 
calculus
find the indefinite integral of ln y divided by 6y cube
asked by coroline 
algebra
31 is 9 more than twice a number
asked by mike 
math
help me solve r=3h+3v
asked by stacu 
chemistry
The gas constant (R) has many different unit formulations. Convert the value of 8.314 (m3Pa)/(Kmol) into units of (Ltorr)/(Kmol).
asked by Jazmin 
algebra
the number 12 is 14 greater than twice a number. find the number.
asked by sean 
Reading
I need a sentence for keening.Please help me.
asked by Sally 
physics
Zandor is being shot out of his cannon (at a velocity of 40 m/s) at an angle of 40 degrees above the horizontal. He is planning to pass through a ring of fire (which is 60 m from where he starts) to the landing pad. How far is the ring of fire from the
asked by katelyn 
math
How can I factor this: 2a^2 + 19a +42 ? I've been trying to do this for so long but I can't figure it out. Please explain the answer as well. The only way I can come up with is trial and error, and I've been trying so long and nothing fits..?
asked by y912f 
re
how does the 'lords prayer' describe god.
asked by claire 
Psychology
Dr. Hall believes that thought processes determine behavior. She encourages her patient to examine the way he looks at problems and solves problems. They look for successful and unsuccessful evaluations and strategies. Dr. Hall's approach
asked by Melisa 
booksfrankenstein
i have to take notes(annotations) on the diction, imagery, details (literary devices), language, and syntax of frankenstein. but i don't know what that means exactly. can someon show me some examples of notes you wiuld take for ch 2 so i can get an idea of
asked by Anax00 
Math
A patient needs at least 36 units of vitamin supplement A, at least 36 units of vitamin supplement B and at least 24 units of vitamin supplement C. Local brand capsules contain 2 units of A, 3 units of B and 1 unit of C costs P15, while foreign brand
asked by May 
AP Bio
What are the variables, hypothesis, and purpose for both parts of Osmosis and Diffusion AP Lab?
asked by Lola 
algebra
an insecticide originally contained 1/2 oz of pyrethrins. the new formula contains 5/8 oz of pyrethrins. what percent of pyrethrins of the original formula does the new formula contain?
asked by smith