Questions Asked on
February 21, 2010

physics
You throw a 20N rock vertically into the air from ground level. You observe that when it is 15.0 m above the ground, it is travelling at 25.0 m/s upward. Use the workenergy theorem to find a) its speed just as it left the ground; b) its maximum height.
asked by anton 
College Chemistry
A student placed 14.0g of glucose (C6H1206) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.mL mark on the neck of the flask was reached. The flask was then shaken until
asked by Christian Gillard 
Chemistry
A sample of silver with a mass of 63.3g is heated to a temperature of 384.4 K and placed in a container water at 290.0K The final temperature of the silver and water is 292.4K assuming no heat loss, what mass of water was in the container? the specific
asked by Anonymous 
physicsmomentum
A 0.145kg baseball pitched horizontally at 39 m/s strikes a bat and is popped straight up to a height of 31 m. If the contact time between the bat and the ball is 2.35 ms, calculate the average force [exerted by the bat on the ball] during contact. [Let
asked by Anonymous 
calculus
use a(t) = 32 ft per second squared as the acceleration due to gravity.An object is thrown vertically downward from the top of a 480ft building with an initial velocity of 64 feet per second. With what velocity does the object hit the ground? This type
asked by sammi 
Math
Assume that the probability is 1/2 that a baby born is a boy. If a couple has two children, what is the probability that both are girls? Assume that births are independent of each other.
asked by Lyndse 
PHYSICS
which dam must be stronger, one that hold back 100000 m^3 of water 10 meters deep or one that holds back 1000 m^3 of water 20 meters deep
asked by Hale 
physics
Three charges are arranged as follows: +3 mC located on the yaxis at +15 mm; 2.5 mC located on the xaxis at 25 mm; and +4.0 mC located at the origin. Determine the magnitude of the force acting on the charge located at the origin.
asked by Jamie 
physics
If 2.0J of work is done in raising a 180g apple, how far is it lifted?
asked by joe 
chemistry
How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq) to reduce the molality to 1.00 m CH3OH. Use two sig figs. I get 4.8 * 10^2 grams and its not right. I want to put this up here again to see if there are any errors that could have
asked by david 
British Literature
Hello, would anyone be willing to check my answers to the following questions? 1. Identify the poetic element used in the following lines from Percy Bysshe Shelley's poem "Ode to the West Wind." The phrase "Thou who didst waken from his summer dreams/The
asked by Tamir 
science (6th)
please use the following terms in the same sentence invertebrate, vertebrate and placenta. Thank you
asked by spencer 
Chemistry
A sample of .234g of carbon is placed in a closed stainless steel bomb with .502g of of oxygen gas. The mixture is ignited giving of carbon dioxide. How many grams of carbon dioxide should be obtained upon combustion?
asked by Ben 
geometry
State the negation of the following statement: It is cloudy.
asked by miranda 
Chemistry
Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday. Although the actual process also requires water, a simplified equation (with rust shown as iron(III) oxide (Fe2O3) is: 4Fe(s)+3O2(g)
asked by Kaylene 
10th grade
how much heat does it take to convert 20g of water to steam at 100c?
asked by eunide 
world studies
In the movie Mulan, why was it a crime for a woman to enlist in a army?
asked by Keyah reed 
College Chemistry
A student placed 14.0g of glucose (C6H1206) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.mL mark on the neck of the flask was reached. The flask was then shaken until
asked by Christian Gillard 
physics
There are two horizontal forces on the 2.0 kg box in the overhead view of Fig. 539 but only one (of magnitude F1 = 20 N) is shown. The box moves along the x axis. For each of the following values for the acceleration ax of the box, find the second force
asked by beav 
chemistry
If the initial concentration of AB is .250 M, and the reaction mixture initially contains no products, what are the concentrations of A and B after 75s?of XY after 5.0 X10^1s?
asked by Ashton 
physics
4.80kg watermelon is dropped (zero initial speed) from the roof of a 25.0mtall building. a) Calculate the work done by gravity on the watermelon during its displacement from the roof to the ground. b) What is the kinetic energy of the watermelon just
asked by anton 
Physics
A crate full of artichokes rests on a ramp that is inclined 10.0° above the horizontal. Give the direction of the normal force and the friction force acting on the crate in each of these situations. (a) The crate is at rest. Normal Force : 1.perpendicular
asked by max 
Organic Chemistry
The reaction of (Z)butenedioic acid (fumaric acid) with butadiene sulfone gives only one product. Draw the product of this reaction and explain why only one product forms
asked by ChemHelp 
physics
Tarzan, who weighs 820 N, swings from a cliff at the end of a 20.0 m vine that hangs from a high tree limb and initially makes an angle of 22.0° with the vertical. Assume that an x axis extends horizontally away from the cliff edge and a y axis extends
asked by Anonymous 
science
Which of the following materials would not be important to a protozoan? a) enzymes b) oxygen c) water d) blood e) carbohydrates Is is enzymes?
asked by sammi 
physics
A hydraulic jack in a gas station lifts a 900kg car a distance of .25cm When a force of 150N pushes a piston through a distance of 20cm Find the IMA (book answer is 80) AMA (book answer is 59) Efficency (book answer is 74%) can you help, I have no idea how
asked by corey 
algebra 2matrices.
A grocer wants to m,ix three kinds of hard candy to sell for $2.40 per pound. He need 50 pounds of candy altogether. He mixes sour balls worth $3.50 per pound,butterballs worth $2.50 per pound, and starlight mints worth $1.75 per pound. He mixes twice as
asked by Alyssa. 
Physics!
A piston has a diemaeter of .64 cm. A second piston has a diameter of 3.8 cm. determine the Force necessary on Piston A to support the 500.0 Newton weight on piston B (in the absence of friction.)
asked by Harper 
Careers
How has the job of a sous chef changed over time? I'm not too sure about this. Sous chef has always worked for the head chef and has always done what the head chef has told him/her to do.
asked by Lena 
College Chemistry
A student placed 14.0g of glucose (C6H1206) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.mL mark on the neck of the flask was reached. The flask was then shaken until
asked by Christian Gillard 
math
If 1/2 of the students are girls and 1/3 of the girls have long hair, what percent of the girls have long hair
asked by tracy 
Chemistry
How much heat is absorbed by a 2000 kg granite boulder as energy from the sun causes its temperature to change from 10c to 29c?
asked by Anonymous 
physics
A solenoid is wound with a single layer of insulated copper wire of diameter 2.800 mm and has a diameter 5.000 cm and is 1.500 m long. Assume that the adjacent wires touch and that the insulation thickness is negligible. what is the inductance per
asked by Andy 
Physics
A capacitor has square plates, each side a, making a small angle theta with each other. Determine the capacitance C in terms of a, d, and theta. The capacitor may be divided into differential strips which are effectively in parallel.
asked by Jiskha's Fan 
chem
Sorbic acid, HC6H702 (pKa=4.77), is widely used in the food industry as a preservative. For example, its potassium salt (potassium sorbate) is added to cheese to inhibit the formation of mold. What is the pH of 0.37M KC6H702(aq)?
asked by Rav 
chemistry
What is the density of PCl5 gas at STP?
asked by Anonymous 
precalculus
While pulling a stalled car, a tow truck's cable makes an angle of 50 degrees above the road. If the tension on the tow truck's cable is 1600 newtons, how much work is done by the truck on the car pulling it 1.5 kilometers down the road? The answer is
asked by Christa 
Geometry
If a polygon has 33 sides what is a) The sum of the measures of the angles of the polygon? b) The sum of the measures of the exterior angles, one per vertex, of the polygon?
asked by Zelda 
science
Where are the enzymes maltase, sucrase,and lactase produced? Is it the small intestine?
asked by sammi 
science
Which of the following materials would not be important to a protozoan? a) enzymes b) oxygen c) water d) blood e) carbohydrates Is is enzymes?
asked by sammi 
Chemistry
∆H⁰rxn, for the reaction of Ca(s) + 2H+(aq) > Ca2+(aq) + H2(g) is 544 kJ/mol. ∆H⁰rxn, for the reaction of CaO(s) + 2H+(aq) > Ca2+(aq) + H2O(l) is 193 kJ/mol. Based on these results, what is the ∆Hf for CaO(s) [in kJ/mol] if the heat of
asked by Luc 
Spanish
The sentences are: "Es un profesor muy bueno y un buen padre." and "Su padre es médico y es un gran hombre." Why is bueno used in the first instance and buen in the second? And why is gran used instead of grande? The dictionary says that buen and gran are
asked by Mary 
Chemistry
A swimming pool 20.0m *12.5 is filled with water to a depth of 3.5m. if the initial temperature of water is 18.4C how much heat must be added to the water to raise its temperature to 29.0C? Assume that the density of water is 1.000g/mL
asked by Anonymous 
Chemistry
What is the chemistry behind caffeine extraction with Na2SO4, CH2CL2 and NaCO3. I know that Na2SO4 some how aborbs the water from a solution leaving the undissolved soilds or something...
asked by Chonos 
geometry
State the negation of the following statement: It is not raining. please help explain
asked by miranda 
precalculus
i need help with homework which is due tommorow determine algebraically whether the graph of the given equation is symmetric to the y axis the x axis or the origin the equations are 5y=7x^22x can u show work please thanks in advance
asked by HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 
biology
Parasites are dependent on their hosts for survival. Which organism do you think is better adapted to a parasitic lifestyle, one that is virulent and often kills its host, or one that only causes mild chronic illness in its host?
asked by Telly 
PHYSICS
The four tires of an automobile are inflated to an absolute pressure of 200000 Pascals. Each tire has an area of 0.024 m^2 in contact with the ground. Determine the weight of the automobile.
asked by Helen 
microeconomics
recently, cellular telephones have become very popular. At the same time new technology has made them less expensive to produce. by assuming the technological advance caused cost curves to shift downward at the same time that demand was shifting to the
asked by ronie 
Physics
Light of wavelength 680 nm falls on two slits and produces an interference pattern in which the fourthorder fringe is 47 mm from the central fringe on a screen 1.1 m away. What is the separation of the two slits?
asked by Anonymous 
physics
One end of a cord is fixed and a small 0.610 kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.00 m as shown in the figure below. When θ = 18.0°, the speed of the object is 4.50 m/s. At this instant,
asked by blasting 
chem
What must be the molarity of an aqueous solution of NH3 if it is 4.2% ionized?
asked by Rav 
math
1. Hot dogs come 10 to a package, and hot dog buns come 8 to a package. What is the smallest number of packages of each that Phillip could buy so that there are no leftover hot dogs or buns? Hot dogs 4 Hot dog buns 5 2. Hamburger patties come 6 to a
asked by Jimmy 
CHEMISTRY LAB
If the molecular mass for a chemical is 45.99 g/mol and the enthalpy of formation is 34 kJ/mol, the heat change will be
asked by Mary 
chemistry
1)RuO2 is molecular, but why is it insulator even though Ru is metal? 2)Why is TiO ionic? I thought only group 1 and 2 would make ionic compound 3)If the the compound has metal and metalloid like GaAs, is it always semiconductor
asked by eng 
maths
In the sequence: x+4y ; 2y+2 ;x ;y1, (consisting of 4 terms) the first three terms form an arithmetric progression, while the last three tern form a geometric sequence. Calculate the values of x and y. Answer(s) can be left in surd form.
asked by Anonymous 
physics
Tarzan, who weighs 820 N, swings from a cliff at the end of a 20.0 m vine that hangs from a high tree limb and initially makes an angle of 22.0° with the vertical. Assume that an x axis extends horizontally away from the cliff edge and a y axis extends
asked by nate 
physics
Monochromatic light falls on two very narrow slits 0.035 mm apart. Successive fringes on a screen 4.80 m away are 5.8 cm apart near the center of the pattern. What is the wavelength of the light?
asked by Eric 
Chemistry
how many joules of heat are lost by 3580kg granite as it cools from 41.2c to 12.9c?
asked by Anonymous 
Chemistry
Gold crystallizes in a face centered cubic structure. Using only a periodic table for refrence, determine the edge length of a gold unit cell. Show all Work.
asked by Josh 
College Chemistry
A 542g piece of copper tubing is heated to 89.5 degrees Celcius and placed in an insulated vessel containing 159 g of water at 22.8 degrees Celcius. Assuming no loss of water and a heat capacity for the vessel of 10.0 J/K, what is the final temperature of
asked by Courtney May 
science  pangaea project
I need help with science pangaea project ideas? my teacher wants a great project, and i really need the grade.? my teacher is expecting an AMAZING project from me, because apparently i'm her best student. anyways, i was thinking that i could show the
asked by NEEDSHELP 
physics
A baseball player with mass m = 80 kg, sliding into second base, is retarded by a frictional force of magnitude 450 N. What is the coefficient of kinetic friction µk between the player and the ground?
asked by Anonymous 
Physics
A horse is trotting along pulling a sleigh through the snow. To move the sleigh, of mass m, straight ahead at a constant speed, the horse must pull with a force of magnitude T. What is the net force acting on the sleigh? What is the coefficient of kinetic
asked by Max 
Chem
Carbonic acid is a diprotic acid that ionizes in two stages. Write the two equations for the successive ionizations of carbonic acid in water.
asked by Josh 
geometry
State the negation of the following statement: Lines a and b are parallel.
asked by miranda 
3rd Grade
What is a Jovian Year and Jovian Day?
asked by John 
Math
A tourist in Ireland wants to visit seven different cities. If the route is randomly selected, what is the probability that the tourist will visit the cities in alphabetical order?
asked by Shannon 
chemistry
Compound A contains 1.75g nitrogen and 3.99g oxygen. Compound B contains 19.6g nitrogen and 56.0g oxygen. Are compounds A and B the same? Explain.
asked by Jack 
Ice Hockey
what = it is a team sport played on ice who = people from all over the world come to play this sport when = it is played in winter. it was staged at the olympics since 1920 where = it is played in areas that are really cold such as canada, the u.s, etc.
asked by Anonymous 
chemistry
How many milliliters of glycerol, C3H8O3(d=1.26g/mL), must be added per kilogram of water to produce a solution with 4.85 mol % C3H8O3? Kinda lost .;
asked by david 
Physical Science
A block of iron is transported to the moon . Which of the following is true 1) Both its mass and weight remain unchanged. 2)Its mass remains the same, but its weight decreases 3)both its mass and weight decreases 4)Its mass decreses, but it weights remain
asked by Archemae 
Math
In right triangle ABC, altitude CD is drawn to hypotenuse AB. If AD equals 4 and AC exceeds DB by 1, find DB. It is from a worksheet about proportions in a right triangle.
asked by Emily 
Math
Suppose there are 7 roads connecting town A to town B and 5 roads connecting town B to town C. In how many ways can a person travel from A to C via B?
asked by Lyndse 
Chemistry
If 0.670mol of liquid Br2 and 460mL of 1.72M aqueous NaI are reacted stoichiometrically according to the balanced equation, how many moles of liquid Br2 remain? Round answer to 3 sig figs. 2NaI(aq) + Br2(l) > 2NaBr(aq) + I2(s) Additional Information: MM
asked by Lisa 
Physics
prairie dogs live in underground burrows with at least 2 entrances. they ventilate their burrows by building a mound around one entrace, which is open to a stream of air. a second entrace at ground level is open to almost stagnant air. use bernoullis
asked by Mal 
Science
Find the time it takes for a water balloon dropped from a second story window and accelerating at 9.8 m/s² downward to hit a passerby on the sidewalk below. The balloon starts from rest and hits with a velocity of 15.9m/s
asked by Justine 
English
Hello! Can you tell me if there are any passive clause in this chapter? This is not my homework I am helping my friend with this and I am so confused :/ By extension of meaning, bills of rights are sometimes regarded as including the definition and
asked by refy 
calculus
Could someone help me draw these vectors? These things confuse me. A force of 42 newtons acting on an object at an angle of 53 degrees with the ground A force of 342 lbs. acting on an object while a force of 454 pounds acts on the same object an angle of
asked by Jim 
algebra 2
Boiling Lake is a small lake on the island of Dominica. The water temperature of the lake is between 180*F and 197*F. Write a compound inequality for this temperature range. [Graph the inequality.]
asked by hope 
chemistry
a galvanic cell: A copper electrode is placed in a Cu(NO3)2 electrolyte. An iron electrode is placed in a Fe(NO3)3 electrolyte. a) What will happen to the voltage if sodium sulfide solution was added to the copper solution(I found that CuS(solid
asked by LALA 
chemistry
How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq) to reduce the molality to 1.00 m CH3OH. Use two sig figs. I get 4.8 * 10^2 grams and its not right. I want to put this up here again to see if there are any errors that could have
asked by david 
s.s.
Axum's conversion to Christianity a. beneficial b. a drawback c. first a drawback then beneficial d. first beneficial then a drawback
asked by joel 
Business Law
On June 1, Jason Thomas placed an announcement in The Local Journal offering a reward of $100 to anyone who found and returned his missing wallet. When his wallet had not been returned by June 15, Jason purchased another wallet. Jason then took steps to
asked by IndyGirl 
Math
The measure of an exterior angle of an equiangular polygon is twice that of an interior angle. What is the name of the polygon?
asked by Mokona 
CALCULUS
If 6 J of work are needed to stretch a spring from 12 cm to 13 cm and 10 J are needed to stretch it from 13 cm to 14 cm, what is the natural length L of the spring?
asked by ANNE 
Chem 1LB
When 0.678 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 11.0C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to
asked by Libit 
math
Cancel common polynomial and integer factors: (x^2+10x+24)/(x^2+12x+32) ????
asked by Channing 
Spanish
What does "Mi prima Susana y so novio no tienen hasta los ocho porque ella tiene/ viene que trabajar." mean and which word is correct (tiene/viene)?
asked by Mary 
college chem
a first order reaction has a fifth life of 20 seconds ( the amount of time needed to use up 1/5) a) Prove that the reaction has a constant 1/5 life. b) find the half life.
asked by hymie 
math
i'm a poet... i don't know math!!! Write 3 X 10^7 km^3 , the total volume of the continental Antarctica ice sheet, in standard form. would it be 30000000000 ?
asked by percy bysshe shelley 
Math, please check work
A bag contains 7 red marbles, 2 blue marbles, and 1 green marble. If a marble is selected at random, what is the probability of choosing a marble that is not blue? 7+2+1=10 There are two blue marbles So is the probability 1/5?
asked by Lyndse 
Math
Roughly speaking, the standard deviation indicates how far, on average, the observations are from the mean. Do you think that for the data set below the standard deviation will give a good indication of the typical deviation from the mean? 2, 3, 4, 4, 5,
asked by Lyndse 
3rd grade  Solor System
How many years does it take Jupiter to orbit the sun? One year on the this planet would actually be how many earth years long?
asked by John 
english
bobpursley, but can you give me an example
asked by Ruth 
Chemistry
I know how to find a and b on this problem but how do I find c? Really would appreciate the help, thanks! The formula of a compound of iron and sulfur was determined using the method of mass measurements. A sample of iron was weighed into a crucible and
asked by Jenny 
chemistry
How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq) to reduce the molality to 1.00 m CH3OH. Use two sig figs. I get 4.8 * 10^2 grams and its not right. I want to put this up here again to see if there are any errors that could have
asked by david 
physics
In Figure P4.30, m1 = 10.5 kg and m2 = 4.5 kg. The coefficient of static friction between m1 and the horizontal surface is 0.60 while the coefficient of kinetic friction is 0.30. Figure P4.30
asked by nat 
Biology
Alright, last ones on the test: 37. Hyphae a. increase the surface areatovolume ratio of the fungus b. have slender filaments c. allow for efficient uptake of nutrients d. all of the above D? 38. In which process do tRNA molecules attach amino acids to
asked by mysterychicken 
To. Ms. Sue
Ms Sue, I have to tell why I think that the 5 athletes who held the olympic flame in the opening ceremony were suitable choices for this honour, I don't know why. I only think that they are very famous and outstanding, and have a lot of fans. I think that
asked by Sara 
english
n A Tale of Two Cities chapter 15 in book the second, what had M Defarge done n attempt to save the tall man?
asked by Anonymous 
Physics
An underwater microphone is used to record sounds emitted by porpoises. The minimum intensity level the instrument can record is 10 dB. Assuming a porpoise emits sound at a rate of 0.05 J/s, what will be the max distance at which the animal will still be
asked by Mitchell 
maths
A brick wall is built by using 2 bricks less in each layer than in the previous one. The wall has m layers and in total 21m+40 bricks are used. If the top layer has only 4 bricks, determine:A) the value of m b) the total number of bricks in the wall
asked by Anonymous 
maths
three number form an arithmetric sequence. Their sum is 24. A)If 'a' is the first number and 'd' the common difference, show that a+d=8 B)If the first number is decreased by 1 and the second number by 2, the three numbers then form a geometric sequence.
asked by Anonymous 
Chem 1LB
When 0.678 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 11.0C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to
asked by Libit 
9th grade
A student put 12.4 grams of potassium sulfate in 29 ml and stirred for 3 hrs. he saw that not all of the solid dissolved, so he removed the extra solid and found it had a mass of 3.4 grams. what was the solubility of the chemical?
asked by Anonymous 
physics
What factors directly affect how much air drag an object experiences?
asked by j 
MATH156
A basketball player has made 135 free throws in 180 attempts. Of the next 50 free throws attempted, how many would she have to make to raise her percent of free throws made by 5%?
asked by purple 
business law
What do you feel about community corrections? Do you feel a communitybased punishment is justifiable in today’s society? Explain why or why not. Provide an example of a communitybased punishment. How do community corrections affect American society?
asked by k 
Calculus
Find the derivative of y=xsin(2/x)? On webassign everything that I have tried has been wrong.
asked by Erin 
chemistry
Find the molar mass of Chromium (III) Hydrogen Phosphate. Also, what is the chemical formula for this molecule?
asked by Jack 
math
operations on functions: Given f(x) = 2root x+7 and g(x) = 5x^2 – 9, evaluate (f/g)(2) . I don't understand how to do this, can someone please explain the process??!! thanks!
asked by Jenn 
Physics
Find the net force on a,b and c. Given ma=363kg mb=517kg and mc=154kg. abc This was a question given to our class by our physics teacher ... he did not show us how to do it. So any help/steps involved to solve this problem would be much appreciated.
asked by Krissy 
english
how to make this thesis on correct placement(Today the price of gasoline is at record high, which brings the question of whether or not the U.S. should start drilling more onshore or offshore. In order to bring now jobs on the market, and lessen the burden
asked by ram 
Math
The coordinates of P are (2,5) the coordinates of Q are (6,1). What is the equation of the perpendicular bisector of PQ? *I was able to figure out that the slope of line PQ is 1/2 and the equation of PQ is 1/2x+4=y
asked by Matt 
Math
How many ways can you arrange 8 different crates on a shelf if they are placed from left to right?
asked by Shadow 
Conflict Management
Name at least 3 Passive aggressive groups and behaviors in society I was thinking the KKK, Civil Rights Movement, and disgruntled workers in the workplace. Any other thoughts would be greatly appreciated! Thanks :)
asked by Beth 
math
The mass of neptune is about 1.03 x 10^23 metric tons. The mass of the sun is about 1.998 x 10^27 metric tons. About how many times the mass of neptune is the mass of the sun? Give answer in scientific notation.
asked by jen 
Ice Hockey
i know some things about ice hockey i know that it is canada's national game and is a significant addition to world sport. It is played seriously by men and women in 20 countries. it is a fast paced antipathetic sport in which 2 teams of six players
asked by Anonymous 
Math, please check answer
Consider the experiment of selecting a card from an ordinary deck of 52 playing cards and determine the probability of the stated event. A face card or a 5 is drawn. So there are 12 face cards. Plus 5. So that is 13 options out of 52?
asked by Lyndse 
calculus
find the derevative (hint try to use limits) (x^2010  1 )\(x 1 )as x approaches1
asked by Anonymous 2 
classroom instruction
Suggest methods for evaluating the lesson’s objective what makes a lesson plan effective
asked by scooby 
Ice Hockey
did paragraph
asked by Anonymous 
Physics
how to find the average velocity and speed for an entire postion time graph
asked by jake 
Reading
Some readers suggest that the "weak" character in Of Mice and Men represent groups of people who were outcasts in 1930s society(for example. Lennie would represent the mentally challenged). For each of the following characters, explain how each could
asked by Jennifer 
math
81y4  16 i know its A2 – b2 = (ab)(a+b) but i cant figure it out
asked by lola 
algebra
In 1995, the life expectancy of males in acertain country was 67.5 years. In 2002, it was 70.8 years. Let E represent the life expectancy in year t and let t represent the number of years since 1995. The linear function E(t) that fits the data is
asked by Anonymous 
algebra
Solve 5r8=2 8r+5s=21
asked by Anonymous 
algebra
6x7y=21 7y6x=21
asked by Anonymous 
algebra
Give the equation of the line that passes through point (5, 1) and is parallel to the line y = 3x – 1. I am so lost. I have no clue how to do this. Can anyone please help?
asked by sabrina 
Crt/205 Critical Thinking
I need help with this assignment: Argument Evaluation DUE: Day 7 Points: 100 · Read the essay “Bush’s Environmental Record” by Bob Herbert found in the “Appendix 1”, pgs. 461462. To find this, click on the “Controlling Irrational Fears after
asked by Joe 
chemistry
When 0.767 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 125C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant
asked by Kelly 
PHYSICS
How would I o about solving this: When a load of 1000000 Newtons is placed on a battleship, the ship sinks only 2.5 cm in the water. Estimate the crosssectional area of te ship at water level.
asked by MAL 
microeconomics
which of the following are actual paretoefficient changes? explain. a) You buy three oranges for $1 from a street vendor.b) you sr near death from thirst in the desert and must pay a passing vagabond $10,000 for a glass of water.c) a mugger steals your
asked by ronie 
Physics
a 123 kg man space finds himself 60 m away from his space ship and wants to get back. he holds a 2kg space gun which fires 5.00g bullet at a rate of 1500m/s. if he fires a single bullet in a direction directly away from the spaceship, how long would it
asked by Gweedo8 
physics
A force of 15 N is directed at an angle of 55° above the xaxis. A second force of 15 N is directed at an angle of 55° below the xaxis. What is the vector sum of these two forces? How would I go about finding the magnitude or vector sum of those two
asked by jessica 
psy210
psy 210 CheckPoint: Research Methods Research Method Description Application Scientific method Case study method Survey method Naturalistic observation method Correlation method Experimental method
asked by Anonymous 
maths
find the number of integers between 32 and 395 that are divisible by 6 find their sum
asked by sarah 
Chemistry
In a .1M aq. soln of NaCN, how would you determine the major species (other than water)? And how would you determine the pH (not exact pH, I just want to know how to know if it is acidic ie.
asked by Trixie 
economics
A firm has production of cars in 2 countries with the following demand: Sweden: P= 300 5Q Denmark: P= 150 3Q Marginal cost for both countries= $40 per unit Will this company price discriminate, and if yes, which type of price discrimination will it use?
asked by luke 
Chemistry
5.00mL of .00500 M ferric nitrate is added to 5.00 Ml of nitric acid and 10.0 Ml of .00250 M thiocyanate solution. Calculate the initial FE^3+ concentration before reaction. I know F3^3+=Cfe[FESCN^2+] after that I have no idea what to do. Help please??
asked by Koo 
To Ms. Sue
Ms. Sue which 2nd and 3rd sentences?
asked by Sara 
please help
hi im trying to order something online im shipping it to brooklyn ny but i don't know if im apo or fpo please someone help .someone posted this but i still don't know if im apo or fpo can you tell me if im fpo or apo i live in brooklyn ny Since this is not
asked by ups 
Math
Can you please check to see if these are right? We have to set each of them to y. Thank You. xy=3: y=3x 2x+y=5: y=52x 2x+y=8: y=82x
asked by Ryan 
math.math.math
how would you simplify (ab)to the 5th power ?
asked by Joliann 
precalculus
is solving this possible graph each function with its parent graph f(x)= 3(x7)^2+2 i thought it was impossible because they did not say how many units i should move it. if this was the translated graph they did not say what the parent graph was am i
asked by HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 
Math
The measures of the angles of a triangle are in the ratio 1:2:3. Find half the measure of the largest angle?
asked by Kurgi 
careers
What part of food science does the career of sous chef fall under? Options: preparation, utilization, evaluation,production I was thinking preparation because you're a chef but sous chef also make menus so what would that go under?
asked by Lena 
English
Thank you very much! I would like you to check these few more statements, too. 1) Summarise briefly (or briefly summarise) the history of England from the prehistory (or from its prehistoric inhabitants) to the AngloSaxon invasion (or to the AngloSaxon
asked by Franco 
Math
can someone sow me step by step how to evaluate the integral of the square root of x^3 using a u substitution? I don't understand this topic and I have a lot of problems to do like this so can someone just sow me so I can see the process? Thanks.
asked by kelli 
Math
How do I find the probability of the event described. What is the probability of rolling a number less than or equal to 4?
asked by Lyndse 
Accountin
Balance sheet help Preferred stok$5.00 par 50,000 balance Common stock$2 par 100,000 balance Problem: Stock information *Authorized to sell 75,000 shares of its preferred stock although this class of stock is $3 dividened value it passed on declaring a
asked by Bon 
English
I forgot to include the following two statements. Thank you very much for your help. 1)He believes a good slogan needs to be short,to have rhythm and above all to sound natural. That’s why slogans tend to go out of date very quickly. 2) He doesn’t want
asked by Franco 
algebra
A store sells a 1liter container of juice for 75¢ and a 2liter container for $1.40. Assume that the cost varies linearly with the number of liters, and find the slope of the line that shows the relationship. How many liters would be in a container that
asked by sanda 
math
The polynomial 0.041h0.018a2.69 can be used to estimate the lung capacity, in liters,of a female with height h, in centimeters, and age a, in years. Find the lung capacity of a 40 year old woman who is 150 centimeters tall. Her lung capacity is
asked by jen 
math
25v^24=0 v=___ (Has to be an interger or a simplified fraction. Use a comma to separate answers as needed)
asked by jen 
english
I have to write a paragraph writing a description about my sister using figurative language. I have no idea what to do. Can you give me an example paragraph on how to start. This will help you. My sister is Sporty and is a fast runner. My sister is
asked by Ruth 
math
Which expression has the same value as (7a2)+(a4) A)8a6 B)6a+8 C)7a2 D)8a+8
asked by Alisha 
3rd grade  Solor System
Two Questions: If it takes Jupiter 9.9 hours to make one rotation around the earth. This means that one day on Jupiter is actually how long? This is as many as how many Earth days?
asked by John 
English
I have to write a paragraph writing a description about my sister using figurative language. Please find the paragraph below. Can you please give me some feedback. Thanks My sister is very important to me. She is my best friend. I know everything about her
asked by Ruth 
Physics
The sound intensity of 1.0 x 10^12 J/(m^2*s) is the threshold of hearing for humans. What is the amplitude of the motion of the air molecules? Use v=340m/s and 1.2 kg/m^3 as the density of air. I believe the formula I would use for this is
asked by Calder 
Biology
Need help with these: 33. In addition to causing disease, protests also affect humans through a. their role in the nitrogen cycle b. their antibiotic properties c. their ability to clean up oil spills d. all of the above A? 35. Fungi obtain food by a.
asked by mysterychicken 
Physics
how would i find the total time spent decelerating on a velocity time graph
asked by jake 
math
what is the are of a cicle if the radius is 5cm
asked by Alisha 
English
Can you please tell me if the following statements are correct. In particular, if the ones in parentheses are also possible? Thank you. 1)The old king Hamlet is linked with (associated with) beauty and justice, whereas Claudius is linked with a filthy
asked by Franco 
physics
a slide loving pig slides down a certain 16° slide in twice the time it would take to slide down a frictionless 16° slide. What is the coefficient of kinetic friction between the pig and the slide?
asked by Anonymous 
Biology
26. The relationship between population growth and resources can be described as a. inverse; as one goes up the other goes down b. parallel; when one goes up so does the other c. complex; there are many contributing factors d. equal; they both level off in
asked by mysterychicken 
masters level finance
I am stuck at the last line of this problem. The original formula is R=Rf+B(RmRf) I have moved it and placed the known information in 14=Rf+1.45(11.5Rf) Then moved it further 14=Rf+16.681.45Rf I need to solve for Rf, but I am having a hard time
asked by candis 
math
The Ramsey's assets are to be divided among their three children Agnessa, Rebecka, and Cody in the ratio of 8 : 6 : 3. For full marks your answer(s) should be rounded to the nearest cent. a) If Rebecka received $6,500 from the sale of securities, what
asked by shara 
Math Check
Is this correct we have to set this problem equal to y? 2xy=4: y=4+2x
asked by Ryan 
math
4x+5y=5 8x+10y=10
asked by Anonymous 
physics
(1)A parallelplate capacitor carrying charge q0 is modified by the insertion of a dielectric with κ = 4.3 between the plates. As a consequence, the energy stored in the capacitor quadruples. What will the charge be after the dielectric is inserted? (2)A
asked by Sandhya 
critical thinking
The reason the auto industry is such a mess is the outrageous union contracts that the automakers are burdened with. Fallacy Type: Why it is this fallacy type: Resource that describes this fallacy type:
asked by denise 
Physics
a) A microphone has an area of 5cm^2. It receives during a 4.0 s time period a sound energy of 2.0*10^11 J. What is the intensity of the sound? b) using intensity from a) what is the variation in pressure in the sound wave, delta P ? Use T=293 K and
asked by Dean 
algebra
2[(1)^n+1] how to simplify?
asked by john 
college physics
The spring constant can be determined from the oscillatory motion. For this case, Newton's second law gives [(m(d^2)x) / (d(t^2))] + kx = 0 where x is the displacement from the equilibrium position. The sample mass is suspended from the spring by a sample
asked by lucy 
Chemistry
What mass of cholrine must be added to 100.0 L of water to achieve this level? Most community water supplies have 0.5 ppm of cholrine added for purification.
asked by Anonymous 
arithmetic
Each term of a progression is determined by adding 0.5 to the preceding term. the sum of the first 25 terms of the progression equals the square of the 25th term. calculate the possible value(s) of the first term
asked by Anonymous 
English
I forgot to include the following statements. Thank you very much!! 8.He is linked/attached to the past 9.He gives this description of his father to underline that (or the fact that?) he is the only one able (or who is able) to govern 10. In front of the
asked by Franco 
microeconomics
suppose two passagers both end up with a reservation for the last seat on a train from san franciso to los angeles. two alternatives are proposed: a)toss a coin b)sell the ticket to the highest bidder. compare the two from the standpoint of efficiency and
asked by ronie 
math
Express the ratio in simplest form. 48 feet to 20 feet
asked by greg 
physics
newyorks 33m tower oscilatesnin the wind with a period of 6.80s calculate the frequency
asked by aa 
Government
Weigh the advantages and disadvantages of the current democratic system. In the chapter on the presidency, for example, you must determine the most and least important presidential power. I have some ideas like the pros are the checks and balances system
asked by Stephanie 
Physics
Consider an infinitely long solid cylinder with radius R_0 and volume charge density rho=rho_0*r(r≤R_0) where rho_0 is a constant. Use first principles to determine the electric field E(vector) for r
asked by Taylor 
math
ok im struggling in math becuase my math teacher isnt really explianing things really good my mom tried 2 swich me to a different teacher but they don't let me wat do i do?
asked by joclyn 
chemistry
what if compound has those metalloids(metal near stair case) with gas element, is it going to be semiconductor. Can you think of any other compound with metalloid and gas elements beside SiO2 that is insulator
asked by eng 
Math help
here's the question Dear Dr. Math, I wanted tto find the area of this hexagon. I few the apothem as I've shown. Then I measured the apothem and perimeter. I used the formula a=1/2ap and got 3.2cm^2 for the area but that seems way too small for me. I think
asked by Rae Rae 
physics
A solenoid is wound with a single layer of insulated copper wire of diameter 2.800 mm and has a diameter 5.000 cm and is 1.500 m long. Assume that the adjacent wires touch and that the insulation thickness negligible. what is the inductance per meter(H/m)
asked by Andy 
geography
immigration and emigration patterns of china
asked by anna 
Geography
How can we control inward migration of humans within the UK?
asked by sam 
Speaking
How can you create an effective climate when discussing matters of importance with coworkers, clients, vendors, superiors and employees
asked by Bryan 
math
Simplify (5a^3)^4 can some one show me how to do this problem.
asked by jen 
3rd grade
What does Jupiter look like?
asked by John 
physisc! URGEENT
The current is 1.9 m/s. A person can swim 0.7 m/s. What is the best angle for the swimmer so that it is swept downstream the shortest distance possible?
asked by mark 
accountin
Not sure where to place this on the balance sheet The cash account has a current balance of 22,500 Problem:The cash balance includes $1,200, the first deposit in a fund for the eventual purchase of an adjacent piece of property
asked by Bon 
business
Do you believe that the move from selling music on a physical product to selling it digitally represents a change that will affect other industries
asked by Rochelle 
economics
You are getting ready for your 1st day of work and realize that you have several options of how to get to bank of Wall Street. you could drive your car and look for street parking , or park in the parking garage. you mighteven take a taxi or subway. you
asked by lasandra 
math :(
how would you find the length of a semicircle using pie 22/7 when the radius shown is 14 ?
asked by gwendolyn brooks 
Math
Adam, Bill, Chris, and Dave each own one quarter of a company. Bill sells 2/3 of his shares to Dave. Adam sells 3/5 of his shares to Chris and the rest to Dave. How much of the company does Dave own now?
asked by Dale 
Physics
How would i find the total time spent decelerating on a velocity time graph? would it be the parts on the graph with negative velocity like 20m/s
asked by jake 
science
We are more dependent upon electricity than people in the past. What does this mean?
asked by BubblyStar 
history
I am doing a "report" on the gas Chambers in Auschwitz during WWII. I am trying to figure out more about how long it took for the prisoners to learn the truth of the gas chambers but I cant find anything help please?
asked by Karissa 
geo
what are china's major imports and exports?
asked by anna 
math help
factor completely 5a^214a+8
asked by jen 
math
60% of the MacRaes five children are boys. How many boys are there. I need help on this, I am stuck. Thanks Jill
asked by JILL D. 
world history
how did japan and china feel about the europeans
asked by nick 
U.S History
I need to find a current day person who is similar to Al Capone. I need to write a paragraph on how my 20's persons accomplishments and/or conrtibutions are similar and different to those of my current day person.
asked by Jill 
CHEMISTRY
What is reaction between HI+HNO3
asked by RAJ 
math
how do u find the coordinates to graph 2x=10?
asked by jerson 
Science
Is it ever possible to be completely healthy?
asked by Justin 
Math
The measures of three of the angles of a quadrilateral are 40, 70, and 130. What is the measure of the fourth angle?
asked by Harry 
Phys
Consider an infinitely long solid cylinder with radius R_0 and volume charge density rho=rho_0*r(r≤R_0) where rho_0 is a constant. Use first principles to determine the electric field E(vector) for r
asked by Taylor 
science  pangaea
my idea for my project is to cut out continents and be able to move them together to form pangaea. and also be able to move them apart again. how can i do this?
asked by NEEDSHELP(: 
calculus
find the derevative (hint try to use limits) (x^2010  1 )\(x 1 )
asked by Anonymous 
Chemistry
Order the following solids according to increasing lattice energy. HgI2, CdCl2, ZnCl2 Now I get how to sort of do it, but I do not get how to do it if I'm looking at its radius if they do not provide it in the question.
asked by Josh 
english
Is many unhappy girls a fragment or runon sentence
asked by lilshay 
algebra
Evaluate and tabulate the values of y for the value(s) given. y = 2x3, for x = 3, 0, 1, 4 Can someone explain how to set this up? I do not know what the question is wanting me to do.
asked by frank 
Physics
How would i find the average velocity for certain points finding the average velocity between 0.2 hours and 0.4 hours object is at 20m at the 0.2 hours object is at 10km at rest at the 0.4hours
asked by jake 
science
do a quad genitic cross :(
asked by aj 
math
what is the area ofa circle if the diamter is 20
asked by Alisha 
math
what is the circumference of a circle if 2 isa the radius
asked by Alisha 
math
what is the circumference of a circle if 2 isa the radius
asked by Alisha 
math
what is the area of a rectangle if 1side is 4 and the other 3
asked by Alisha 
math
what is area
asked by Alisha 
math
wat is circumference
asked by Alisha 
math
105/5*20+5
asked by Alisha 
math
what is the difference between circumference and area
asked by Alisha 
English
I forgot to include the following statements. Thank you very much!! 1)He fears that when Caesar will become (becomes) king he will turn into a dictator depriving the Romans of their liberty. 2)The ghost asks Hamlet to take revenge for his death (murder)
asked by Franco 
math
what is the circumference of a circle if 13 is the diameter
asked by Alisha 
nutrition
what effects might alcohol and caffeine have on hydration levels in the body?
asked by nicholle 
English
Can you help me rephrase this sentence? Prospero was set adrift with her daughter Miranda on a boat (set adrift???) on order of his brother Antonio. Thank you
asked by Franco 
Physics
How would i find the average velocity for certain points.? finding the average velocity between 0.2 hours and 0.3 hours object is at 20m at the 0.2 hours object is goes down(backwards) to 10m at the 0.3hours
asked by jake 
chemistry
Determine the molarity of in an aqueous solution at equilibrium with air at normal atmospheric pressure. The volume percent of in air is 20.65 Under an pressure of 1.00 , 28.31 of dissolves in 1.00 at 25.
asked by sab 
Math
Is this right I have to set it to y=? 3xy=9: y=9+3x How would you set these two problems to y=? 3y=x+6 4x+3y=12
asked by Ryan 
spanish
Quien es el chico?
asked by chrissy 
English
Who is guru?
asked by Ruth 
English
Oh ok because Whitacher said that Guru told me something but he did not. Who is Jiskha?
asked by Ruth 
economics
As such, you are assigned the duty of ensuring the availability of 100,000 yen for a payment scheduled for next month. Considering that your company possesses only US dollars, identify the spot and forward exchange rates. What are the factors that
asked by Anonymous 
Science
I just want to see what you all think. I had to write a paper on Malathion and the West Nile Virus. I also had to go by the following topics. Please let me know what you think of the paper. Thanks! Hazard Identification: A lot of people including but not
asked by stephanie 
Physics
A hollow glass block floats in a container of ethanol. Initially, everything is at a temperature of 20 degrees C, and 6% of the block is above the surface of the ethanol. If you everything gradually and evenly, at what temperature will the block sink to
asked by Reed 
Math
How many ways can you arrange 8 different crates on a shelf if they are placed from left to right?
asked by Shadow 
A & P
how is blood clotting, immune response, allergic reaction and hormone release interrelated?
asked by Nala 
math
Would you rather receive simple interest at the rate of 10% per year or 1% per month? Explain.
asked by lisa 
algebra
Solve the linear equation using any technique you have learned. Name the technique. Check. 3x + 12 = 7x  28 I know the answer is x = 4 and I know that substitution is the technique that is used, but I can't figure out how to set this up
asked by lovey 
Physics
A 4.0kg block is at rest on a horizontal floor. If you push horizontally on the 4.0kg block with a force of 12.0 N, it just starts to move. What is the coefficient of static friction?
asked by Max 
critical thinking
The President’s agenda has been derailed by out of touch rightwing extremist lies spread by cable media and talk radio. Fallacy Type: Ad hominem Why it is this fallacy type: Resource that describes this fallacy type:
asked by denise 
Psychology
How has early memory research concerning the growth of cognitive perspectives in psychology changed over the course of the 20th century? What are the reasons for this change?
asked by Jennifer 
critical thinking
From a politician asked by reporter about an alleged ethics violation: “I am not here to discus accusations based on the politics of personal destruction. What the American people want to hear about is how we are going to create job’s. Fallacy Type:
asked by denise 
Math
.704=log(100/x) I tried this 10^.704=10^(100/x) But i not sure what to do now?
asked by Neo 
critical thinking
I don’t care if he has a PhD from Harvard! He’s a Mormon for heaven’s sake! How can anyone with such extremist views be considered credible? Fallacy Type: Why it is this fallacy type: Resource that describes this fallacy type:
asked by denise 
Calculus
find the definite integral that represents the are of the region enclosed by y= 4xx^2.
asked by ciara 
help
hi im trying to order something online im shipping it to brooklyn ny but i don't know if im apo or fpo please someone help
asked by ups 
chemistry
How many neon atoms are there in five moles?
asked by Jack 
Finance
I need help doing a pro forma balance sheet.
asked by Dee 
chemistry
how do you synthesize benzoic acid from pbromotoluene? what reagents would you add to remove the bromine group?
asked by szs 
Physics
This is a long one, but it is a no solve. Youʼre cooking four pancakes, one at a time, using a stovetop timer to judge the time Ät needed to cook each side (i.e. half) of each circular cake (radius = r). The timer emits a “ding,” a sound whose
asked by Kristy 
English
Can you please tell me if the following statements are correct. In particular, if the ones in parentheses are also possible? Thank you. 1. Hamlet’s father is described/defined/delieneated/portrayed/represented/outlined as a murderer, a villain, a slave,
asked by Franco 
science
i need to draw a picture of nitrogen as a person, with the amount of protons, neutrons, electrons and the atomic number, all of which are 7, corresponding to the head, body, arms and legs. any ideas on how to draw this?
asked by lynn 
PreCalc
medication duration using the function of e through time lapse problem D(h)=8e(up carrot)0.31(h) find med level at 1 hour no problem 5.88mg. but every time I insert 4 for the 4 hours I get a larger number... much larger indicting the med level has gone
asked by BecKi 
Business Law
Peter, a farmer, leaves 3 bushels of tomatoes with Keagan, the owner of a grocery store. Peter says “Look these over. If you want them, they’re $3.00 a bushel.” Keagan never gets back with Peter. Keagan runs out of his own tomatoes and begins selling
asked by IndyGirl 
English
Thank you very much for your last suggestions! Can you check these last statements of the day, please? Thank you 1) The mirror is a recurrent theme in the poetry of the American poetess Sylvia Plath. Describe its characteristics, qualities and symbolic
asked by Franco 
com220
I am having a hard time with my assignment it is asking consider the following effective visuals can illustrate points in your research paper and help readers understand and accept your argument more easily. Develop two or more visual you plan to use in
asked by kasey 
algebra
which formula is best to find how many ounces of broth could be held in a cylinder that has a radius of 2inches and height of 7 inches if every cubic inch of volume contains onefourth ounce of broth?(round the answer)
asked by ashley 
Chemistry
What kind of compound would you add to the waterinsoluble amine aniline to make it more soluble in water?
asked by Holly 
grade 11 math
Given f(x) = 2root x+7 and g(x) = 5x^2 – 9, evaluate (f/g)(2) . I don't understand how to do this, can someone please explain the process??!! thanks!
asked by Jenn 
To. Ms. Sue
Ms. Sue please take a look at my previous post, I still need help :(
asked by Sara 
math
The following graph shows the growth of the median home value in a particular region of the United States starting in 1996. The graphs starts in 1996 and shows the trend through the year 2000; therefore x = 0 represents the year 1996 and x = 4 is 2000.
asked by Anonymous 
SCIENCE  CLIMATE  ALBEDO
what is the connection between the amount of albedo and energy absorbed?
asked by Lenny 
math
Without finding the exact answer, select which of the following numbers is the best estimate of each sum or difference and justify your choices: 2/3, 0, 2/2/3. a. 1/9 + 2/5 – 1/3 – 3/4 I am confused on where to begin on this question.
asked by david 
chemistry
The mass of twentythree dozen pencils is 1.496 kg. What is the mass of 1 pencil?
asked by Jack 
Algebra 2
write the sum using summation notation 1+6+13+22+33
asked by Melissa 
Math Repost (Logs)
.704=log(100/x) I tried this 10^.704=10^(100/x) But i not sure what to do now?
asked by Neo 
Physics
A hypothesis says the upper limit in frequency a human ear can hear can be determined by the diameter of the eardrum, which should have approximately the same diameter as the wavelength at the upper limit. Using the hypothesis what would be the radius of
asked by Maddy 
dental health
why do we celebrate dental health month?
asked by johannah 
physics
when any block slides down a smooth incline which is unfixed then the incline moves back.WHY??
asked by mohit 
math
how do you solve this linear equation? x/31/3=5 I do not understand this with fractions. Can anyone help?
asked by rmz 
chemistry
The initial concentration for the compounds involved in the reaction displayed were determined to be [BrI(g)] = 0.3220 mol/L, [Br2(g)] = 0.3287 mol/L, [I2(g)] = 0.004086 mol/L. Calculate the value of the equilibrium constant (Kc) at 423.0 K if the
asked by Angel 
maths
i think of a number and divide it by 25 and then add 6 . the answer is 18 . whatnumber did i think of ?
asked by azam 
maths  challenge
Simon starts a new job . On the first day he gets paid 1p . on the second day he gets paid 2p , and every day after that his pay doubles . how many days will it take him to earn £1,000 in a day ?
asked by azam 
math
how would u factor ab (to the 2nd power)  b
asked by anne 
Statistics
How do you know the pvalue on megastat. On minitab It looks like it gets a different pvalue than megastat. I got a number from megastat of 2.35E10 and on minitab it was 0.000.
asked by David