Questions Asked on
January 16, 2013

Math
Which of the following statements is not true regarding operations with exponents? A.)To divide powers with the same base, subtract the exponents. B.)To subtract powers with the same base, divide the exponents. C.)To multiply powers with the same base, add
asked by Deborah 
chemistry
What has the higher normal melting point: CHI3 or CHF3? The answer in the book is CHI3. So I'm assuming the answer is CHI3 because Iodine is the bigger and will form larger london dispersion forces, but isn't a stronger dipole moment formed in CHF3 because
asked by Bill 
trig
Use a table of trigonometric values to find the angle θ in the right triangle in the following problem. Round to the nearest degree, if necessary. cos θ = 0.9659 A = ? H = 20
asked by ab 
mathsurgently needed
The volume of a cylinder is 48.125 cm3, which is formed by rolling a rectangular paper sheet along the length of the paper. If cuboidal box (without any lid i.e., open at the top) is made from the same sheet of paper by cutting out the square of side 0.5
asked by Anonymous 
math
In the diagram, transversal GH intersects parallel lines AB amd CD. m
asked by me 
Science
State in words the specific information conveyed by a label reading 0.25M Oxalic acid.
asked by Gloria 
economics
Kimberly works for a well known financial company as a sales representative. She earns a small base salary but receives commission off every product she sells. Kimberly has basic living expenses in addition to a student loan. She wants to start adding to
asked by john 
HOMEWORK
Choose two authors from the early American and Colonial period. Identify what they wrote and, in one to three paragraphs, compare their purpose, audience, and style. (25 points
asked by Anonymous 
Chemistry
Calculate the radius of a vanadium atom, given that V has a BCC crystal structure, a density of 5.96 g/cm3, and an atomic weight of 50.9 g/mol. I used this equation: density = (2)*(atomic weight) / (volume of unit cell)*(Avagodro's #) rearranged to find
asked by Kyle 
Design
Which design style encourages a complete manipulation of floral materials into unnatural geometric shapes and colors? A. Abstract B. New convention C. Ikebana D. New wave im thinking B
asked by Jamie 
Math
A fraction reduces to 36. If its denominator is 6x5, what is its numerator? A.)63x B.)63x5 C.)6x5 D.)67x5 I think the answer is B. Thank You.
asked by Deborah 
math
A set has 256 subsets how many element has the set?
asked by Boris 
Design
What is the difference between the vegetative style and the landscape style of flower arranging? A. Vegetative arrangements group sameseason flowers together, while landscape arrangements don't. B. The vegetative style features flowers as they're found in
asked by Jamie 
Physics
suppose that two point charges each with a charge of +1 coulomb are separated by a distance of 1 meter will they attract or repel ? determine the magnitude of the electrical force between them
asked by Quinn 
Algebra
A baseball player's batting average is the number of hits the player has divided by the number of atbats. At the beginning of a game, a player has a batting average of .360. During the game, the player gets 3 hits during 5 atbats, and his batting average
asked by Amie 
Math
If a wheel turning at a constant rate completes 100 revolutions in 10 sec what is its angular speed?
asked by Anonymous 
nutrition and wellness
Write a 300500 word essay. Provide Three examples of sporting events, or fitness activities, with which you have been involved. Describe what energy pathway was used in that sport or activity and explain why you are matching the pathway with the activity.
asked by jay BIRD 
Physics
An 81 kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is .49. a) what is the magnitude of the frictional force? b) If the player comes to a rest after 1/6s, what was his initial velocity?
asked by Anonymous 
English
Hi, I have a english exam coming up on poetry and Hamlet... the first part is Part A ;Passage Analysis: Choose only three of the following passages from the play Hamlet to comment on. Each response should be concise and well written in full sentences...so
asked by Satrianna 
Chemistry
A steel tank at 300 K contains 0.285 L of gas at 1.92 atm pressure. The tank is capable of withstanding a maximum pressure of 5.76 atm. Assuming that doubling the kelvin temperature causes the internal pressure to double, a. at what temperature will the
asked by Sara 
6th grade Math
I'm having trouble determining the range movie tickets sold by looking at a histogram. I know you normally take the highest value represented and subtract the lowest value from it to get the range. However, when you have a histograme and the data set is
asked by Brandi 
Math
The amount of money Kylie spends on food to the amount she spends on gas per week is 7:4. She spends $45 more on food than gas. How much does she spend on food? How much does she send on gas? On one of the weeks, she spends an additional $75 on food for a
asked by Jillian 
Chemistry
Calculate the radius of a vanadium atom, given that V has a BCC crystal structure, a density of 5.96 g/cm3, and an atomic weight of 50.9 g/mol. I used this equation: density = (2)*(atomic weight) / (volume of unit cell)*(Avagodro's #) rearranged to find
asked by Kyle 
Design
What is the difference between layering and terracing? A. More depth can be achieved with layering than with terracing. B. In layering, the materials are more threedimensional than in terracing. C. In layering, materials such as leaves can't be reversed
asked by Jamie 
MATH
A box contains 6 red pencils and 8 black pencils. what fraction of thr pencils are red?
asked by RYAN 
English
Which of the following is equivalent to x^5 y^2/xy^2 when =/ 0 and y =/ 0 ? (1 point) A.) X^6 Y^5 B.) X^5 Y C.) X^4 Y D.) X^4 I don't even have a good guess. Thank you.
asked by Deborah 
astronomy
If we represent the sun as volleyball (diameter =65cm)how far away would be find earth in this model? Note the suns actual diameter is 1.4x10^9 meters.
asked by kristy 
CALC (PLEASE HELP DUE SOON)
Find the limit (if it exists). (If an answer does not exist, enter DNE.) lim f(x) as x approaches 3, where f(x)= x^28x+9 if x/3 (greater than or equal to 3)
asked by Amela 
Physics
A ladder 20m long rest against a vertical wall so that the foot of the ladder is 9m long. Find correct to the nearest degree the angle that the ladder makes with the wall.
asked by Jeremiah 
math
Jeremy collected nickels for one week. He is making stacks of his nickels to determine how many he has. The thickness of one nickel is 1/4 in. How tall is a stack of 4 nickels? 3 nickels, 2 nickels?
asked by Jade 
math helpp
8. Convert the scale to a unit rate. Show your work. Interpret the meaning of the unit rate.
asked by tesj 
mathsurgent
Arjun spent Rs.12 to purchase some pens and pencils.The cost of a pen and pencil are in the ratio 3:2. the total cost of a pen and a pencil is Rs. 3. if the total number of pens and pencils he purchased is7, find the number of pens he purchased.
asked by Anonymous 
Math plz HELP!
At 7pm the temperature outside was 5 celsius. What does 5 represent in this situation? A. The change in temperature the last hour B. The number of degrees between 0 Celsius and 5 celsius. C. The temperature at 7pm D. The number of hours when the temp
asked by T.J And the Vibe 
astronomy
a remote internet webpage may sometimes reach your computer by going through a geostationary satellite orbiting approx. 3.6x10^7m above earths surface. What is the minimum delay in seconds that the webpage takes to reach your computer.
asked by kristy 
Physics
A 12000 kg airplane launched by a catapult from an aircraft carrier is accelerated from 0 to 200 km/h in 3 s. (a) How many times the acceleration due to gravity is the airplane's acceleration? (b) What is the average force the catapult exerts on the
asked by Jan 
analytical geometry
if (l1,m1,n1),(l2,m2,n2),(l3,m3,n3) are the direction cosines of three mutual perpendicular lines,show that the line whose direction ratios area l1+l2+l3,m1+m2+m3,n1+n2+n3 make equal angles with them
asked by manjula 
chemistry
Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution.
asked by Anonymous 
chemistry
Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution.
asked by Anonymous 
Physics
A boy on a 2.4 kg skateboard initially at rest tosses a(n) 8.2 kg jug of water in the forward direction. If the jug has a speed of 3.0 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.57 m/s, ﬁnd the boy’s mass.
asked by Cesar 
Physics
Suppose you pour water into a container until it reaches a depth of 12 cm. Next, you pour in a 25cmthick layer of oil so that it floats on top of the water. The density of the oil is 0.92 g/cm3 and that of water is 1.00 g/cm3. What is the pressure at the
asked by Alphonse 
Chemistry;HELP
Use the 5step method and be sure to include units where appropriate. Round your answers to the correct number of significant digits. Mass m Density =  or D =  Volume v Adjust the density formula and solve the problems below: m D =
asked by Victoria 
Physics
A ladder 20m long rest against a vertical wall so that the foot of the ladder is 9m long. Find correct to the nearest degree the angle that the ladder makes with the wall.
asked by Jeremiah 
research
A quantitative analysis method which aggregates a number of (similar) individual studies into a large data set from which to compute an over all “effect size” (based on similar study procedures and treatments) is commonly known as…?
asked by helga 
Design
_______ refers to the process of tying materials together to hold them in place in an arrangement. A. Binding B. Clustering C. Banding D. Grouping
asked by Jamie 
Economics
Owners of digital cameras have to buy memory cards in order to use the cameras. Cameras and memory cards are: A. substitutes. B. complements C. unrelated. D. elastic.
asked by Mari 
Visual Basic (Computer Programming)
ALGORITHM EXERCISES 1. Wilma Peterson is paid by the hour. She would like a program that both calculates and displays her weekly gross pay. For this exercise, you do not need to worry about overtime pay, as Wilma never works more than 40 hours in a week.
asked by Erick 
math
A 20ft by 40ft swimming pool is surrounded by a deck d feet wide. What is the area of the deck?
asked by tishondra 
math
Rachel is curious about the number of pets that people own. She surveyed her 20 classmates, asking them exactly how many pets they own. Rachel's data is shown below: Number of Pets 0 Pets 1 Pet 2 Pets 3 Pets Number of Classmates 9 6 1 4 What is the mean
asked by Kingbla 
Chemistry
At room temperature, ethanol's density is 0.789 g/mL while water's density is 0.997 g/mL. When a few milliliters of ethanol are added to water, the two liquids mix. A student is given a unknown liquid at room temperature and experimentally determines its
asked by John 
word problems
harris is planting a rectangular garden with an area of 24 square. he is also putting a fence around his garden. how should he arrange his garden so he can buy the least amount of fence possible?
asked by julian 
8th grade math
A model car is a 1/43 scale model of the original car. What is the scale factor needed to find the dimensions of the original car? model car=4.2" long, 1.3"tall, and 1.6" wide?
asked by Kory 
math
Why is 2482 not a reasonable answer for 542x6
asked by esha 
Chemistry
What mass of CH4 is contained in a 443 mL sample of CH4 at −32◦C and 282 torr? Answer in units of g. I tried so many times and I don't get it!
asked by Maddie 
math
the difference of y and 3 amounts to 12. Write each sentence as an equation
asked by vic 
social studies
i need help!!!!! one type of lightning bug glows once every 1 1/2 seconds. how many times can it glow in 1 minute? and the other one is : Bea can run 1/6 mile in 2 minutes. how long should it take her to run 2 miles? please help the teacher wont help me
asked by gaby 
s.s
4. How did the United States change as it became more economically independent? (Select TWO correct responses.) Population decreased as trade with other nations was stifled. The growth of factories and trade led to the growth of American cities. Congress
asked by Anonymous 
Geometry
Is it possible for a cross section of a cube to these shapes.... pentagon isosceles triangle scalene triangle ..... If so, please describe how the plane intersects the cube. Thanks!!!!
asked by Bridgett 
physics
An observer rides with a moving sound source directly toward a large vertical wall. The vehicle has a constant speed of 10m/s and the source has a frequency of 150Hz. What beat frequency is heard by the observer as a result of the combination of the direct
asked by Offiong 
Math
Annie likes to walk 2 steps, jump 2 steps and then skip 2 steps. If she does this pattern over and over again for a total of 52 steps, how many jumping steps will she make?
asked by Reece 
Algebra
A gardener combines x fluid ounces of a 20% liquid fertilizer and 80% water mix with y fluid ounces of a 5% liquid fertilizer and 95% water mix to make 30 fluid ounces of a 10% liquid fertilizer and 90% water mix. a. Write a system of linear equations that
asked by Amie 
astronomy
if the earths orbit is 1.5x10^8km, determine how fast earth moves along its orbit assume there are 365 days in a year. remember the circumference of a circle is equal to 2pi where r is the radius.
asked by kristy 
Geometry
a cat is stuck 15 feet up in a tree.to get it down,you will place a ladder 5 feet from the base of the tree.how tall must your ladder be in order to reach the cat? Round to the nearest foot
asked by Lessley 
chemistry
Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution.
asked by Anonymous 
analytical geometry
show that the locus of a point whose distances from two given planes are in a constant ratio, is a plane.
asked by manjula 
Physics
A 0.055 kg golf ball leaves the tee at 50 m/s. what is its change in momentum (impulse) ?
asked by Taylor 
physics
A 40 gram bullet is fired horizontally from a gun with a momentum of 2.8 (kg*m/s) and embeds itself into a 300 gram block of wood initially at rest on a wooden horizontal surface. After this collision the wood block slides 15 meters before falling off a
asked by Cass 
Physics
suppose that two point charges each with a charge of +1 coulomb are separated by a distance of 1 meter will they attract or repel ? determine the magnitude of the electrical force between them
asked by Anonymous 
physics
a body of mass 5kg initially at rest is subjected to a force of 20N. find the kinetic energy acquired by the body at the end of 10s.
asked by prudhvi 
Chemistry
explain why a sealed bag of potato chips "puffs out" (increases in volume) if taken from sea level to a high mountain pass. I know this has to do with pressure.. so is it because the higher up you go, the less pressure there is? Thanks!
asked by Sara 
physics
A 91.0 N grocery cart is pushed 17.1 m along an aisle by a shopper who exerts a constant horizontal force of 42.0 N. The acceleration of gravity is 9.81 m/s2 . If all frictional forces are neglected and the cart starts from rest, what is the grocery
asked by k 
English
Your favorite cousin has moved to your town and is looking for a job. Her previous experiences are working as a cashier and sales clerk at two department stores. You know she plans to apply at similar stores in your town. But you also know she is a perfect
asked by Evelyn 
Algebra
The length of a rectangle is 5 inches greater than the width. The sum of the length and width is 41 inches. Find the length and width of the rectangle.
asked by Anonymous 
reading
from this pragrap what relationship can youinfar between the jogger and the writer
asked by sazu 
Spanish.
Help answer please? ¿Qué animal fue importante para el éxito de los conquistadores? ¿Cuál país conquistó Hernán Cortés? ¿Cómo se llama el conquistador de Perú?
asked by Victoria 
College Trigonometry
From a point 200 yards from the foot of a building, the angle of elevation to the top of the building is 37 degrees. Find the measure of the angles of the triangle formed by the building, the ground, and the line of sight to the top of the building?
asked by Marie 
economics
How does a budget differ when you have an irregular income vs. a predictable income? irregular income is monthly budget.
asked by john 
maths
A statistician wants to estimate the mean weekly family expenditure on clothes. He believes that the standard deviation of the weekly expenditure is $125. Determine with 99% confidence the number of families that must be sampled to estimate the mean weekly
asked by sarah 
english composition
quote or paraphase. Examples and explain your answers
asked by rosetta shaw 
physics
two forces 20N each are inclined at 100 degree to each other.find the single force that will; replace the given force system balance the given force system
asked by rezny 
algebra
Parking in a student cost $3 for the first half hour and $1.50 for each hour thereafter. A partial hour is charged the same as a full hour. What is the longest time that a student can park in this lot for $9?
asked by luis barreto 
chem
When saccharin is added to pure water, the freezing point of the resulting solution drops to 5.0C, Calculate the freezing point depression of the aqueous saccharin solution. Note: freezing point of pure water is O.0C... Stuck thanks so much!
asked by Lala 
Math
Calculate the limit: lim(((arccos x)^(n+1))/((arccos x)^n) with x tends to 1, for every n that belongs to N, and then prove that lim(((arccos x)^n)/(arccos x))=sprt(n).
asked by Zisis 
Mechanics & hydromechanics
Three forces pulling on a body are in equilibrium. The direction of one is due south, the direction of another is 80 degrees east of north, and the third force acts in the direction of 35 degrees west of north. If the magnitude of southerly force is 38 N,
asked by joe 
Chemistry;HELP
Use the 5step method and be sure to include units where appropriate. Round your answers to the correct number of significant digits. Mass m Density =  or D =  Volume v Adjust the density formula and solve the problems below: m D =
asked by Victoria 
PreAlgebra
The Jaspers collect nickels, dimes, and quarters in a jar. When they count the change in the jar, there are twice as many nickels as there are quarters. If there is $15.30 in dimes and $74.80 in all, how many quarters are there. Please include an equation
asked by Anonymous 
analytical geometry
show that the locus of a point whose distances from two given planes are in a constant ratio, is a plane.
asked by manjula 
aig math
Fill in the missing sign to make the equation true. 125 _ 5 _ 12 _ 2 = 1
asked by May 
math
the quotient of four and the sum of a number and one. Use x to represent each unknown number
asked by vic 
math
in 2005,Eastside elementary school was built at a cost of $18,000,000.the school it replaced was built in 1935 at the cost of $180,000.explain how the values of the 8 in each number are related.
asked by skylar 
Chemistry
A steel tank at 300 K contains 0.285 L of gas at 1.92 atm pressure. The tank is capable of withstanding a maximum pressure of 5.76 atm. Assuming that doubling the kelvin temperature causes the internal pressure to double, a. at what temperature will the
asked by Sara 
physics
Consider two vectors where F1 = 53 N, F2 = 81 N, 1 = 320 , and 2 = 13 ,measured from the positive x axis with the counterclockwise. What is the magnitude of the resulting vector?
asked by sarah 
math
which 1 of the following is a true proprotion A. 7:9=8:9 B.2:1=1:2 C.54:9=6:3 od D.3:4=9:12 please answer
asked by brooklyn 
Math please help ms sue
The Jaspers collect nickels, dimes, and quarters in a jar. When they count the change in the jar, there are twice as many nickels as there are quarters. If there is $15.30 in dimes and $74.80 in all, how many quarters are there. Please include an equation
asked by Anonymous 
Algebra
The length of a rectangle is 5 inches greater than the width. The sum of the length and width is 41 inches. Find the length and width of the rectangle.
asked by Anonymous 
math
Aliquot divisors are all the divisors of a number except the number itself. The product of the Aliquot divisors of a number is somtimes equal to the square of the number. The Aliquot divisors of of 12 are 1 ,2 ,3 ,4 ,6. Their product,1x2x3x4x6=144=12*2 is
asked by Jeff 
math
express 16^21/2^7  5^12 in simplest fotm
asked by teresa 
Chemistry
Solid magnesium reacts with oxygen gas to produce 568g of solid magnesium oxide.
asked by Emmaly 
8th grade Math
kimberly used coupons worth $1.00 off and $1.25 off and two coupons for $1.50 off. if the discount of each of these coupons were doubled, how much would kimberly save?
asked by Rubby 
English
You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe one
asked by Evelyn 
chem. quick help
Ni(OH)2(s) + H2SO4 = 2H2O + NiSO4 so i balance this problem but I don't know the states of matter except the first one
asked by thad 
Mechanics & hydromechanics
Where a 1208 N weight must be hung on a uniform 214 m pole so that a boy at one end supports onethird as much as a man at the other end.
asked by joe 
math
Annie likes to walk 2 steps, jump 2 steps and then skip 2 steps. If she does this pattern over and over again for a total of 52 steps, how many jumping steps will she make?
asked by Anonymous 
Math Help!!
Bottom part of a greenhouse frame has a length of 350 cm width of 220 cm and a height of 250 cm. Angle at the peak of the roof measures 90 degrees. Sketch the frame and label it with its actual dimensions. Use a scale of 1:25 to calculate the measurements
asked by Anonymous 
Math
The Jaspers collect nickels, dimes, and quarters in a jar. When they count the change in the jar, there are twice as many nickels as there are quarters. If there is $15.30 in dimes and $74.80 in all, how many quarters are there. Please include an equation
asked by Anonymous 
health
To keep a positive attitude on the job, you should A. look for the perfect company—this will ensure everything will be all right. B. complain about the things that bother you so they can get straightened out. C. encourage others to help you with your
asked by Bobby 
7th grade science ASAP
1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point)
asked by Delilah 
geometry
determine the measure of
asked by carol 
Chemistry
(b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?
asked by Anonymous 
biology
If the side chain of a glutamic acid residue has a pKa of 4.1, at pH 6.1 the ratio of uncharged to charged side chain would be about A. 100:1 B. 10:1 C. 1:1 D. 1:10 E. 1:100
asked by Dan 
MATH PROBLEM
One revolution of the Sun by the Earth requires 365 days, 5 hours, 48 minutes and 49.7 seconds. the 5 hours, 48 minutes and 49.7 second is approximated to 1/4 of a day. Every 4th year, one full day is added( leap year). How much of an error in minutes and
asked by Kim 
Algebra with applications
A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows: 29 said they drove alone. 36 rode in a carpool. 36 rode public transportation. 6 used both carpools and public transportation. 4 used
asked by Kim 
Math
A moving truck fills up a shipment at an od adress, at (2,1). It travles 7 blocks south and 6 blocks east to the new adress. What is the location of the new adress? PlEASE ANSWER THIS AS FAST AS POSSIBLE!! Amanda
asked by Amanda 
Math
a building with 143 windows has more than two floors; each floor has the same number of windows as every other floor. If there are less than a dozen floors how many windows are on each floor.
asked by Anonymous 
Math Word problems
A number of birds were in a tree. Half flew away. 6 more flew away, a quester of the birds remained. How many birds were originally in the tree.
asked by April 
8th Grade MATH
a pack of 8 collectable cards contains 1 rare card, 3 uncommon cards, and 4 common cards. If Javier has 45 packs of cards, how many more uncommon cards does he have than rare cards?
asked by Rubby 
Physics
A 40 gram bullet is fired horizontally from a gun with a momentum of 2.8 (kg*m/s) and embeds itself into a 300 gram block of wood initially at rest on a wooden horizontal surface. After this collision the wood block slides 15 meters before falling off a
asked by Cass 
Astronomy/Conversion
There are 365.25 days in a year, 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute. Convert years into seconds. Show your work and keep 5 significant figures. Ok, so finding it is easy (multiply 24, 60, 60 and 365.25) but how does the
asked by Anonymous 
Help please
Paul Acorn maintains that the distinction between human and animal manipulation of the natural environment to create artifacts is: a. Technology b. the ethical application of technology c. Choice d. Creativity and adaptation
asked by Nick 
Science
What is the current draw of a 2 kW heater when operating at 240 V?
asked by Evan 
AP Chemistry
In a ﬁt of boredom, a chemistry teaching assistant swallows a small piece of solid dry ice (CO2). The 8.9 g of dry ice are converted very quickly into gas at 311 K. Assuming the TA’s stomach has a volume of 1.5 L, what pressure is exerted on his
asked by Jose 
College Algebra
I posed these one's before but added parenthesis which I think made it confusing as the actually questions do not have them. So, I'm reposting them without to see if it makes sense. If not I understand. 1. Compute as indicated. Write your answer in lowest
asked by Krissy 
geography
how was colonial america both godly and devilish?
asked by Taylor 
4th. grade english
what is the rule for why "achieved' is spelled that way instaed of "achieveed"?
asked by debbie 
Math
5/8 + 3/4 + 2/3  5/6 = mixed number form
asked by T.J And the Vibe 
science
what is the gravitational potential energy of an object to its weight multiplied by its what?
asked by Erika 
math
A tree stands 75feet tall and cast a shadow that is 50feet long. What is the angle of elevation from where the shadow ends and the top of the tree
asked by zach 
math
The diagram Cindy made is a lacrosse field, the model is 5 1/2 inches long and 3 inches wide if 1 inch equals 20 yards what is the area of the field?
asked by T.J And the Vibe 
PLEASE HELP BIO
If the side chain of a glutamic acid residue has a pKa of 4.1, at pH 6.1 the ratio of uncharged to charged side chain would be about A. 100:1 B. 10:1 C. 1:1 D. 1:10 E. 1:100 i HAVE NO IDEA Which of the following amino acids has a side chain that can serve
asked by Dan 
Math
A bicycle with 26inch diameter wheels is travelingat 10 mph. To the nearest whole number how may revolutions does each wheel make per minute?
asked by Taylor 
Social Studies
how does elevation affect climate in the arabian peninsula?
asked by Anonymous 
Mechanics & hydromechanics
Find the magnitude and direction of the equilibrant of two forces, one being horizontal pull of 18 N and the other a pull of 23 N at 50 degrees to the 12 N force.
asked by joe 
English
Revised from Wednesday, January 16, 2013 (10:46 a.m.) I choose to become a Medical Transcriptionist to use my skills in writing, spelling, grammar and punctuation. My passion for medical transcription arose because of my love for research and thirst for
asked by Evelyn 
science
what is the unity of life? if asked to explain two examples could it be a human and a chimp or would the two examples be DNA and RNA?
asked by annie 
Mechanics....Urgent!!
Find the magnitude and direction of the equilibrant of two forces, one being horizontal pull of 18 N and the other a pull of 23 N at 50 degrees to the 12 N force.
asked by joe 
Geometry
A lined napkin,in the shape of a square,has sides 9inches long.if the napkin is folded along the diagonal,what is the length of the diagonal ?
asked by Raina 
Cosmology
Lookback time for a given redshift, tL(z), is... * time between the given redshift and the beginning of the Universe. * time between the infinite and the given redshift. * equal to the age of the Universe at the given redshift. * time between now and the
asked by qwerty 
Cosmology
In a universe where the scale factor is proportional to t^α, where t is time and α is a constant less than one, the universe has: * the sign of the acceleration is undetermined * negative acceleration * positive acceleration * zero acceleration
asked by qwerty 
Chemistry
(b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?
asked by Anonymous 
Chemistry
(b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?
asked by Anonymous 
math (algerba 1) Please help!
x+y=0 3x+y=4 Sovle each system of equation by graphing. If got the answer (3,3), but it's not there. Please explain!
asked by kathryn 
algebraic expressions 5th grade math
larry and martha each planted the same number of carrots seeds in their gardens.After 4 weeks,larry had c carrots and martha had 6 more(write an expression)please help me solve,thank you
asked by vicki 
bio
The most common protein secondary structures (the alpha helix and beta conformation) are stabilized primarily by A. ionic bonds B. hydrogen bonds C. disulfide bonds D. van der Waals interactions E. hydrophobic interactions
asked by Sara 
analyytical geometry
find the equation of the planes 5x3y+4=0 and x+y2z+10=0 and which are 1 unit distance from the origin.?
asked by manjula 
GENERAL CHEMESTRY
Analyze the properties of a sodium atom and a sodium ion. What are the differences in mass, stability, and reactivity that are caused due to the differences between the sodium atom and sodium ion? Provided an in depth explanation or analysis of subject or
asked by ROSE 
math
i need help in how to check my answer for an equation problem. The problem is n over 2 equals to 18 i already know what n is [36[ but now how do i check it
asked by seher 
science
a sphere of mass 500.0g is released from point A 5m above the ground and slides down to point B 3.2m through point C 2m in frictionless wire track. (1)determine the particle's speed at points B and C. (2)determine the net work done by the force of graviy
asked by trevor 
math
nate cut a pie into 7 equal pieces. he gave one piece to his dad and three times as much to his brother Chris. what fraction of the pie was left?
asked by lori 
chemistry help plz
Explain what the terms chiral atom and chiral molecule mean.
asked by centya 
chem
Determine if the following substances are soluble (at room temperature, 1 atm) in water or in hexane (: grease and CS2 how do you know this
asked by Samantha 
math
what is 62 above 0?
asked by jaylin 
Social Studies
are there social systems in the Saudi Arabia or anywhere in the Arabian Peninsula?
asked by Anonymous 
Significant Figures
I'm having a hard time with significant figures. Any help would be appreciated. The first one is 0.0000000502. I put that it has three significant figures. Is this correct? The other numbers I haven't a clue about are: 5.52 299,792,458 206,265 I get the
asked by Carl 
Biostatistics
Hi, I have answered some questions for some homework and I've got one of them wrong. I cannot modify my answer but I would really love to know why my answer is wrong. This is the statement of the problem: n this series of questions, we examine data from a
asked by Marta 
Math
a building with 143 windows has more than two floors; each floor has the same number of windows as every other floor. If there are less than a dozen floors how many windows are on each floor.
asked by Anonymous 
One college algebra ?
Hello I have a question about a problem. The problem is ( 25/9)^3/2. Its multiple choice however I think they are tricking us. A. 125/27 B.  125/27 C. 125/3 D. Not a real number I got A as an answer but feel that it is not a real number?
asked by Kristen 
Statistics
Suppose you were in charge of advertising for an automotive dealership when the gas prices increased to $4 per gallon. Most of your cars are fuelefficient, but you have two models that have extremely poor fuel economy, that is, a low number of miles per
asked by Maimee 
English languege
What is antonym of sharp
asked by Abubakar 
Gr 9 Science  physics
If all 3 resistors in a series 12V circuit are the same, what will the voltage be across resistor no. 3?
asked by iza 
science
lengths of railway tracks have small gaps between them. Why are the tracks built this way and what might happen it there were no gaps?
asked by Taylor 
Geometry honors
the endpoints of AB are a(3,5) and b(9,15). find the coordinates of the points that divide AB into 4 congruent segments
asked by Daniel 
Calculus 3
Let L be the line that passes through the points (0,1,6) and (0,3,2). Find the length of the projection of k= on the line L. I know how to do this if one part of the vector k is touching the line, but unless i'm mistaken, that is not the case in this
asked by Heather 
Calculus 3
Let L be the line that passes through the points (0,1,6) and (0,3,2). Find the length of the projection of k= on the line L. I know how to do this if one part of the vector k is touching the line, but unless i'm mistaken, that is not the case in this
asked by Heather 
math
Write each sentence as an equation. The difference of y and 3 amounts to 12.
asked by vic 
Math
Find the principle, given r=3% and t=3/4 years, a=2556.25
asked by Me 
Algebra
1. Create the indicated algebraic expression. Use descriptive variables. The length of a rectangular lawn is 6 ft more than three times the width of the lawn. Express the length of the lawn in terms of the width. A. 3+w+6 B. 3(w+6) C. 6w+3 D. 3w+6 For 1 I
asked by Krissy 
3rd grade math
nina has a quilt. 1/3 of the square on it are pink. rosa has the same size quilt. the fraction of pick square on her quilt is greater. which fraction show the pink squares of rosa's quilt. A 1/2 B 1/5 c 1/4 D 1/6
asked by mythreyee 
Physics
Question: particle J with zero initial mass and X energy accelerates from a static start to 'C' (light speed) in a time frame of N and mass increases 10 to the 28th power per nanosecond What is the mass on particle J? What is the energy of particle J?
asked by Dan 
3rd grade math
tyrone and jerome have the same number of marbles. 3/6 of tyrones marbles are blue. jerome has fewer blue marbles. which fraction shows the number of blue marbles jerome has A. 1/2 B. 2/4 C. 1.6 D. 4/6
asked by mythreyee 
6th grade s.s forgot textbook in locker!!!!
Need help immediatly!!! If someone already posted please still post! And I'm not doing this becuze I'm lazy but becuze I forgot my textbook in my locker and there's nothing on the internet to help!!! TOPIC: NORTHERN EUROPE 1.What river makes london a
asked by leslie 
physics
Why metal was used to make each object you should consider to propies of metal when you answear this question
asked by Malefu 
3rd grade math
kate ate 3/3 of sandwich. cao ate 7/7 of a sandwich that was the same size as kate's who ate more. explain you answer
asked by mythreyee 
3rd grade math
Two thirds of the musicians in a 16piece band are girls. the 16 musicians include 12 brass players. what fraction of the band plays brass instrument.
asked by mythreyee 
math
8n^2+14n15=0
asked by Caitlyn 
math
the quotient of n and 5 is 4 times n. Write each sentence as an equation
asked by vic 
math
there are two 2's in 299,792,458.name the place value of each 2.explain how their values are related.
asked by skylar 
Algebra
I have two terms. 3.675v^1 + 0.096v^2 do I add these exponents?
asked by Lyric 
Math
Juan says the diameter of circle with a radius of 8 inches is 4 inches. What is his error? What is the correct diameter?
asked by Ryan 
math
susie writes the division fact 20/5=. write the remaining fact in this fact family.
asked by johnathan 
algebra
The perimeter of a rectangle equals the sume of the lengths of its four sides. If the width of a rectangle is 9 inches and its perimeter is 52 inches, find the length of the rectangle.
asked by luis barreto 
Math Word problems
A number of birds were in a tree. Half flew away. 6 more flew away, a quarter of the birds remained. How many birds were originally in the tree.
asked by April 
Mechanics & hydromechanics
A uniform plank AB of length 4.6 m and weight 508 N is suspended by a vertical rope at each end.A girl of weight 305 N stands in the position 1.6 m from one end.Calculate the tension in the rope at one end using the other end as axis of rotation.
asked by joe 
math
• regular rate: $2.10/lb • ship 101 to 500 lb, get a 20% discount • ship over 500 lb, get a 40% discount A large medical supply company has promised to donate 12 hospital beds and 4 wheeled stretchers over four months. Each bed weighs 58 kg and each
asked by jen 
math
Which dimensions of two rectangular prisms have volumes of 100 m3 but different surface areas
asked by skyler 
help
3/10 and 7/8 can u help me convert it then simplify my biggest answer is 24/70
asked by tesj 
Geometry
What dose a squared , b squared , c squared represent ?
asked by Lessley 
math
How much cans of paint is needed to cover an area of 36 metres square if one can covers 25meters square.
asked by Anonymous 
math
169+3/6 is the answer 9
asked by Adelia 
social science
1) Which large European city declined significantly in population over the past century? A) Paris B) London C) Rome D) Madrid 2) The industrial city was characterized b A) decentralization B) corporate growth C) manufacturing D) commerce 3) Modern humans
asked by sally 
english
How important of a factor does money play in the lives and happiness of individuals? is this sentence grammatically correct?
asked by jaz 
Cosmology
The most cosmological measurements show that the universe is extremely flat (Ωk≈0) and that the surface brightness of objects scales with the fourth power of redshift (SB∝z^−4). If the universe was still expanding, but had strong negative curvature
asked by qwerty 
Cosmology
In an Einsteinde Sitter (matterdominated) universe, the scale factor is proportional to time to the power of: * 3/2 * 2/3 * 1/2 * 1/3
asked by qwerty 
Cosmology
A curvature constant of k=0, as used in the Friedmann equation, means: * The universe is open * The universe is matterdominated * There is no dark energy * The universe is flat
asked by qwerty 
Physics
How many joules would be required to raise the temperature of 20g of ice at oC to water at15C?
asked by Benny 
statistics
The mean of a normally distributed data set is 226.2. The data item, 230, has a zscore of 0.2. Find the standard deviation.
asked by Anonymous 
biology
Which of the following amino acids has a side chain that carries a negative charge in its conjugate base form? A. H B. W C. C D. K E. N
asked by Dan 
Geometry
A^2 , b^2 , c^2 represent
asked by Nessie 
Science
What's a benefit and risk of nuclear energy?
asked by Cassidy 
political science
what are the argument for and against politics being a science
asked by jean 
analytical geometry
two edges PQ,RS of a tetrahedron PQRS are perpendicular,show that the distance between the midpoints of PS and QR is equal to the distance between the mid points of PR and QS
asked by manjula 
analytical geometry
the axes are rectangular and a point P moves on the fixed plane lx+my+nz=p.the plane through P perpendicular to OP meets the axes in A,B,C parallel to YOZ,ZOX,XOY intersect in Q.show that the locus of Q is p{1/x2+1/y2+1/z2}=l/x+m/y+n/z
asked by manjula 
economics
Jesse and Kimberly recently graduated from college and are starting a family. Currently, they are just making ends meet with their $45,000 salary. They want to contribute the maximum amount (currently $2,000) to fully fund an Educational Savings Account
asked by john 
food
how much is 2/3rd of a cup of sugar when it is .36 a cup?
asked by luke 
Algebra
Subtract. [2x/(x^2y^2)][7/(yx)] Thank you! :)
asked by Alan 
Algebra 1
Using the pointslope form of a line, y4= 2(x+3) identify the slope. b. Transform this given equation into slopeintercept form.
asked by Haylie 
Math
How many fencing materials will be needed if the measurements of the sides of the lot to be fenced are 37.5m and 24.8m?
asked by Anonymous 
Math
How many fencing materials will be needed if the measurements of the sides of the lot to be fenced are 37.5m and 24.8m?
asked by Anonymous 
Business Finance
What effects does depreciation have on cash flow? When it comes to ratio analysis, which ones are the most important? Which businesses might use certain ratios more than others and what was the purpose of the Du Pont Indentity?
asked by Anonymous 
algebra
9w + 3 = 6(w  2)
asked by JEM 
Math  missing fraction
Please advise how it is I go about finding the missing fraction. I get so confused. The problem is: N3/5=1/4 I know the LCD would be 20 but from there, I am lost. Thank you.
asked by Renee 
INTRODUCTION TO MANAGING PERSONAL HEALTH
The one area you can't control to reduce your chances of stroke, heart disease, or diabetes is?
asked by Hennessey 
English
I'm doing an essay on generalizations and I need 3 paragraphs on it. Also, I need help thinking on what generalization I should do and how I can support it.
asked by Teshawn 
Algebra
What is the xcoordinate of the solution of the system y=1/3+8 and 2xy=2?
asked by Sylvie 
science
lengths of railway tracks have small gaps between them. Why are the tracks built this way and what might happen it there were no gaps?
asked by Taylor 
Chemistry
1. How would you take 1L of an existing solution with a concentration of 1M and use it to make a new solution of 0.1 M? Be specific. 2. Would it be possible to easily create a 2 M solution from 100 mL of 1 M solution? Explain why or why not?
asked by Anonymous 
Algebra
Is it possible to find a value for c so that the linear system below has exactly one solution? Explain. 5x+3y= 21 Equation 1 y= 5/3x+c Equation 2
asked by Sylvie 
Chemistry
What is the dilution formula? I have not learned this,
asked by Anonymous 
math
the first landscaper charges $16 per hour to landscape my house, plus $225 for the products needed. the second landscaper charges $61 per hour (products included). for how many hours will the cost of either landscaper be the same?
asked by tristin 
Gr 9 Science  physics (part 2)
If the current at one corner of the 12V series circuit is 1.0 A, what is the current at corner number three (all three resistors are the same).
asked by iza 
Math
A local men's suit manufacturer had 2,742 square meters of fabric to make identical suits, all of the same size. If each suit used 7.4 of fabric, how many suits could be made?
asked by Stephanie 
Calculus 3
Let u=j+k and v=i+jsqrt2. a) Calculate the length of the projection of v in the u direction. b) Calculate the cosine of the angle between u and v. Your help is very much appreciated!
asked by Heather 
math
Use an x to represent each unknown number. Twice the sum of a number and three.
asked by vic 
physics
define 1watt of power . a lamp consumes 1000J of electrical energy in 10s calculate its power.
asked by prudhvi 
Math (Help please)
Find the points on y=(x^2+4x3)^3 that has a horizontal tangent line.
asked by Aa 
Chemistry
I'm supposed to compare the percent composition of gases in the atmosphere at sea level to the percent composition at high altitude.. Would the percents decrease? I don't really understand
asked by Sara 
math
16/4(4)=?
asked by bibha 
Grammar
Do I use to or too in the following sentence? Rita and I are picky who we give compliments to or too?
asked by Gigi Seitlin 
Pre Algebra STill needs help
What is the radius of a circle with the area of 4pi/9?
asked by West M 
math
3p equals 39 what is the value of p
asked by victpria 
Math
Which of the following is equivalent to x^5 y^2/xy^2 when =/ 0 and y =/ 0 ? (1 point) A.) X^6 Y^5 B.) X^5 Y C.) X^4 Y D.) X^4 I don't even have a good guess. Thank you.
asked by Deborah 
science
what is the iupac name of ch tripple bond c single bond ch2 single bond cl
asked by Ankit 
Algebra
Find the constant of variation for the quadratic variation. 6y = 4x2 A. 4/9 B. 2/3 C. 2 D. 3/2
asked by Becka 
3rd grade math
rogelio has 3 onedollar bills, 5 quarters, 4 dimes, 2 nickles and 9 pennies. what fraction of the coins are quarters. A 1/2 B 1/5 c 1/4 D 4/10
asked by mythreyee 
English
What type of analogy is garbage:smelly and antenna:radio?
asked by Teresa 
science
how does the sulfur and iron reaction work?
asked by laksan 
Grammar
Is this correct? My parents and we.
asked by Anonymous 
math
What is the pressure exerted on the floor by a 2,000N crate with an area of 4m²?
asked by thomas sanxez 
math
50 red cars and 30 white and 20 blue what is the probability of 2 cars from the same colors ?
asked by omar 
math
jackie wrote 5,406,029 in expanded form this way: [5 x 1,000,000] + [4 x 100,000] + [6 x 10,000] + [2 x 10] what two errors did jackie make?
asked by skylar 
3rd grade math
Draw a model to show 84/12=7
asked by johnathan 
MATH
in 2005,Eastside elementary school was built at a cost of $18,000,000.the school it replaced was built in 1935 at the cost of $180,000.explain how the values of the 8 in each number are related
asked by skylar 
us history
what term decribes the division of government into 3 branches is it separation of powers
asked by a 
CHEMISTRY
1. How would you take 1L of an existing solution with a concentration of 1M and use it to make a new solution of 0.1 M? Be specific. 2. Would it be possible to easily create a 2 M solution from 100 mL of 1 M solution? Explain why or why not?
asked by Anonymous 
english
I have to write a two page assignment onorganization. can you show me an apa format. joann
asked by joann 
Mechanics & hydromechanics
A uniform 98 N pipe is used as a lever. Where the fulcrum must be placed if a 504 N weight at one end is to balance a 192 N weight at the other end?
asked by joe 
math
what is annuity?
asked by jiskha 
chemistry
Elemental zinc will react with acid to evolve hydrogen gas. This is a redox reaction. Write a balanced molecular equation for the reaction of zinc and hydrochloric acid, showing the coefficents and the phases of all reactants and products. Below is an
asked by simon 
Math
A music CD has a diameter of 4 inches. What is the radius? Explain your thinking.
asked by Ryan 
MATH
in 2005,Eastside elementary school was built at a cost of $18,000,000.the school it replaced was built in 1935 at the cost of $180,000.explain how the values of the 8 in each number are related
asked by skylar 
Math
Tom has 1/5 more single dollar bills than Monica. Tom has 1/5 fewer single dollar bills than Elaine. If Monica has $10 in singles, then Elaine has How many dollars in singles?
asked by CeCe 
7th grade science
1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point)
asked by Delilah 
Math
X
asked by Denise 
physics
A wave travels 750 meters in 5 minutes. Its wavelength is 16.1 meters. What is its period?
asked by Max 
science
How can I find the physics behind why a wheel moves faster or slower than other wheels? Is this friction?
asked by Jackson 
math
Suppose that function f:[0,2]>R is continuous at [0,2], differentiable at (0,2) and such that f(0)=0, f(1)=1 and f(2)=1. a) Show that there is a x1 that belongs to (0,1) such that f'(x1)=1. b) Show that there is a x2 that belongs to (1,2) such that
asked by Zisis 
Geometry
Sarah wrote the following 3 numbers as an example of a Pythagorean triple.Is she correct?why or why not? 21,25,35
asked by Dayna Washington 
Cosmology
Which of these is NOT a good estimate of the age of the universe? * Decay times of 238U and 232Th in metalpoor stars. * Isochrone fits for globular clusters. * Ages of the faintest white dwarfs. * Ages of the hottest mainsequence stars in distant
asked by qwerty 
science
what is the scorpio constellation?
asked by kein 
Cosmology
The single largest uncertainty in the measurement of the Hubble constant using gravitational lenses comes from uncertainty of... * the distance to the lensing cluster or galaxy. * the mass distribution of the lensed quasar. * the distance to the lensed
asked by qwerty 
Cosmology
In the TullyFisher relation, the scatter is minimized at which wavelength? * Red * Blue * Infrared * UV
asked by qwerty 
Chemistry
Please help, do you have any pointers on how to use linear regression in determining the reaction order
asked by Xavier 
Cosmology
As compared to Cepheids, RR Lyrae stars are... * fainter and slower pulsating. * brighter and faster pulsating. * fainter and faster pulsating. * brighter and slower pulsating.
asked by qwerty 
math
write 1 2/3 as a fraction?plezzzzzzzzz hellllllllllllllllllllllllllp!!!!!!!!!!!!!!!!!!!
asked by remy 
Cosmology
In order from earlier to later times, the dominant components of our universe have been: * dark energy, matter, then radiation * dark energy, radiation, then matter * matter, radiation, then dark energy * radiation, matter, then dark energy
asked by qwerty 
math ??
what is the 43rd term of 124122120
asked by tori 
Math
Position Term 1 10 2 14 4 22 8 38 n a) Create an expression that represents the term’s value in terms of the position.
asked by Lizzy 
marh 150 help
simplify 2x^79x^7 and 80 dollar shirt 30% off = ? (how do i put this together)
asked by eddie 
7th grade science bobpursley
5. Change in the hereditary features of a type of organism over time is ______. (1 point) growth biogenesis spontaneous generation evolution 10. Gregor Mendel discovered some alleles can cover up the presence of others; these alleles are called __________.
asked by Delilah 
arithmetic
change 12/23 into a decimal to the nearest hundreth's
asked by mark 
math
largest prime # under 100
asked by Tyson 
biology
Which of the following amino acids has the most hydrophilic side chain? A. F B. Q C. V D. M E. A
asked by Dan