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2013
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Questions Asked on May 7, 2013

A ray of light of vacuum wavelength 550 nm traveling in air enters a slab of transparent material. The incoming ray makes an
1. 1 answer
2. asked by alice
3. 8,374 views
Late one night on a highway, a car speeds by you and fades into the distance. Under these conditions the pupils of your eyes
1. 1 answer
2. asked by Ashley
3. 3,619 views
the vertices of quadrilateral EFGH are E(-7,3) F (-4,6) G (5,-3) and H (2,-6) what kind of quadrilateral is EFGH
1. 5 answers
2. asked by jan
3. 3,613 views
2.Simplify the polynomial. –3f^2 + 4f – 3 + 8f^2 + 7f + 1 5f2 – 11f + 2 11f2 + 11f + 2 5f2 + 11f – 2 –5f2 + 11f – 2
1. 10 answers
2. asked by Delilah
3. 3,332 views
A particle moves along a path described by y=x^2. At what point along the curve are x and y changing at the same rate? Find this
1. 2 answers
2. asked by Shania
3. 3,186 views
2.Simplify the polynomial. –3f^2 + 4f – 3 + 8f^2 + 7f + 1 5f^2 – 11f + 2 11f^2 + 11f + 2 5f^2 + 11f – 2 –5f^2 + 11f
1. 3 answers
2. asked by Delilah
3. 2,936 views
each step of a ladder increases one's vertical height 40.0cm. If a 90 kg painter climbs 8 steps of the ladder, what is the
1. 2 answers
2. asked by Anonymous
3. 2,869 views
Alice throws a ball straight up with an initial speed of 40 feet per second from a height of 5 feet?a) Find parametric equations
1. 1 answer
2. asked by Rebekah
3. 2,835 views
If the endpoint in the titration of KHC8H4O4 solution with the NaOH solution is mistakenly surpassed, will the molar
1. 1 answer
2. asked by Kerapetsi
3. 2,761 views
A shop sells one-pound bags of peanuts for $2 and three-pound bags of peanuts for $5.If 9 bags are purchased for a total cost of
1. 2 answers
2. asked by ja'Sae
3. 2,759 views
find the range of f(x) = -2x+6 for the domain {-1,3,7,9}
1. 3 answers
2. asked by Anon
3. 2,556 views
Fahrenheit and Celsius are two measures of temperature. The temperature in degrees Celsius is equal to five ninths of 32 less
1. 2 answers
2. asked by Anon
3. 2,515 views
For questions 5-7, find the solution to the system of equations by using either graphing or substitution.5)y=6-x and y=x-2
1. 12 answers
2. asked by Gabby
3. 2,410 views
1- you push a coin across a tabble, the coin stops. How does this motion relate to balanced and unbalanced forces?
1. 2 answers
2. asked by Kate
3. 2,091 views
An unknown solid acid is either citric acid or tartaric acid. To determine which acid you have, you titrate a sample of the
1. 1 answer
2. asked by Sarah
3. 2,054 views
6. The most common rule for forming plural nouns isA. adding -es to the word. B. changing the y to i and adding -es. C. dropping
1. 3 answers
2. asked by NANA
3. 2,021 views
What is the equilibrium constant for the reaction: Si + O2 <-> SiO2 ?Is the answer just [SiO2]/[Si][O2] ?
1. 1 answer
2. asked by Anonymous
3. 1,936 views
Set up the integral that would be used to find the volume of the solid obtained by rotating the region bounded by y=x^3 , y=8,
1. 1 answer
2. asked by diego
3. 1,880 views
Write a function rule for the area of a parallelogram whose base is 4 inches more than its height. What is the area of the
1. 1 answer
2. asked by Anon
3. 1,863 views
Participants from the National Health and Nutrition Examination Survey, 2003–2004, had a mean BMI of 28.3 with a standard
1. 2 answers
2. asked by ali awan
3. 1,818 views
A piece of wire 40 m long is cut into two pieces. One piece is bentinto a square and the other is bent into an equilateral
1. 3 answers
2. asked by Brian
3. 1,751 views
The density of CO2 (g) at 25°C and 715 torr is:
1. 3 answers
2. asked by Anonymous
3. 1,712 views
Two parallel slits are illuminated by light composed of two wavelengths. One wavelength is λA = 553nm. The other wavelength is
1. 1 answer
2. asked by Ashley
3. 1,688 views
A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb+2 and Cu+2 are
1. 0 answers
2. asked by Samm
3. 1,650 views
The area of a hexagon is 42 square cm. If all the dimesions of the hexagon are multiplied by 3, what will be the area of the new
1. 1 answer
2. asked by Daniel
3. 1,641 views
All the verbs that have not been conjugated need to be either in preterite or imperfect form. My spanish teacher hasn't really
1. 5 answers
2. asked by Jessica
3. 1,605 views
1.how many non congruent right triangles with positive integer leg lengths have areas that are numerically equal to 3 times
1. 1 answer
2. asked by ramesh reddy
3. 1,594 views
3 robots go out to lunch. They decide to share the $11.91 bill evenly. How much does each robot pay?Equation: 3x = 11.91 #1.
1. 3 answers
2. asked by Sydney
3. 1,554 views
got this from my teacher,A monopolist faces a demand curve given by the following equation: P = $500 − 10Q, where Q equals
1. 5 answers
2. asked by Julie
3. 1,523 views
In a control system, an accelerometer consists of a 5.15-g object sliding on a calibrated horizontal rail. A low-mass spring
1. 2 answers
2. asked by Abdalla A.
3. 1,520 views
WITH STARS IS MY ANSWER! (*)1) A drug created by a chemical reaction in some foods, especially fruits and grains A= neurons B=
1. 3 answers
2. asked by Sandy, (Please Check My Answers Please) :D
3. 1,351 views
Add or Subtract for #3-43. (2x2 + 6x + 1) + (–7x2 + 2x – 3) 5x2 – 4x – 2 –5x2 + 8x – 2 5x2 – 8x + 2 –9x2 – 8x
1. 1 answer
2. asked by Delilah
3. 1,333 views
how much heat is emitted when 65.6 g of isopropyl alcohol condenses at 25 degrees C
1. 3 answers
2. asked by Anonymous
3. 1,266 views
A substance releases 496kJ of heat as 2.60 moles condense from a gas into a liquid. What is the molar heat of vaporization of
1. 1 answer
2. asked by Anonymous
3. 1,262 views
A culture started with 2,000 bacteria. After 6 hours, it grew to 2,200 bacteria. Predict how many bacteria will be present after
1. 1 answer
2. asked by Kevin
3. 1,261 views
Alice throws a ball straight up with an initial speed of 40 feet per second from a height of 5 feet?a) Find parametric equations
1. 1 answer
2. asked by Rebekah
3. 1,212 views
A weather states that there is a 60% chance of rain on Saturday and a 60% chance of rain on Sunday. Explain why the chance of
1. 1 answer
2. asked by Zaid
3. 1,199 views
A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb+2 and Cu+2 are
1. 0 answers
2. asked by Samm
3. 1,194 views
1. 0.3x0.5=0.152. 1.2x2.1=2.52 3. 2.5x6.7=16.75 4. 0.4x8.3=3.32 5. 2.3x1.21=2.783 6. 0.6x0.91= 0.546 7. 6.5x 0.04=0.260 8.
1. 2 answers
2. asked by Jerald
3. 1,180 views
This box plot shows the heights in inches of girls on a freshman basketball team. What would you say is a typical height of a
1. 1 answer
2. asked by Cassidy
3. 1,127 views
Find the value of Z that is smaller than 90% of all values of Z.
1. 1 answer
2. asked by ali awan
3. 1,122 views
Four players are playing a game involving choosing squares on a grid of size 3×8. Each player chooses a random square on the
1. 3 answers
2. asked by Bob
3. 1,107 views
The amount that results when $2,000 is compounded at 8% annually over six years
1. 1 answer
2. asked by Anonymous
3. 1,103 views
A rectangular field is to be enclose by 800 meters of fencing and the fourth side with be along the side of a barn.A) What
1. 1 answer
2. asked by Anne
3. 1,084 views
Utilizing a public policy of your choice from a local government where you reside, prepare a paper assessing that government’s
1. 2 answers
2. asked by Kareema
3. 1,077 views
Critically discuss 10 ways in which the environmental health hazard can impact negatively on one's health
1. 1 answer
2. asked by Kelebogile
3. 1,048 views
cos[(tan^-1(3/4))+(cos^-1(9/41))]
1. 1 answer
2. asked by Hannah
3. 1,041 views
Emily rows six miles downstream in 1 hour and her friend Ashley,rowing 1 mile per hour faster,completes the return trip in 2
1. 1 answer
2. asked by Jane
3. 1,030 views
Solve the equation simultaneously.1/3x+y =3,x+1/2y=4
1. 1 answer
2. asked by Haleemath
3. 1,023 views
rhombus ABCD is similar to rhombus BFDE. The area of rhombus ABCD is 24,and angle BAD=60degreees.what is the area of rhombus
1. 0 answers
2. asked by ramesh reddy
3. 1,023 views
In a playground there is a small merry-go-round of radius 1.40 m and mass 140 kg. The radius of gyration is 0.960 m. A child of
1. 1 answer
2. asked by Help!:)
3. 1,019 views
A solid sphere rolls up an inclined plane of inclination angle 35 degrees. At the bottom of the incline, the center of mass of
1. 0 answers
2. asked by Science
3. 993 views
If the unicorn seat on a merry-go-round is 5 feet from the center, and the merry-go-round completes a full rotation in 6
1. 1 answer
2. asked by chely
3. 993 views
we burn 12.50L of ammonia in 20.00L of oxygen at 500 degrees celsius. What volume of nitric oxide, NO, gas can form? what volume
1. 2 answers
2. asked by Juan
3. 975 views
If a galaxy is traveling away from us at 2.0% of the speed of light, roughly how far away is it?t= light years I got 2.4x10^8
1. 0 answers
2. asked by Leila
3. 956 views
A horizontal force of 150 N is used to push a 32.5-kg packing crate a distance of 4.95 m on a rough horizontal surface. If the
1. 1 answer
2. asked by Abdalla A.
3. 944 views
In the lungs there are tiny sacs of air, which are called alveoli. An oxygen molecule (mass = 5.30 × 10-26 kg) is trapped
1. 0 answers
2. asked by Ashley
3. 939 views
A coffee shop sells small cups of coffee and large cups of coffee.A small cup of coffee costs $2. A large cup of coffee costs
1. 1 answer
2. asked by anna
3. 918 views
What is the measure of the side of a cube if the volume is 27000cm3?
1. 3 answers
2. asked by Annika
3. 910 views
Joey has a beach ball with a radius of 20 cm. What volume of air will it hold when fully inflated?
1. 1 answer
2. asked by Nadia
3. 906 views
The voltage generated by the zinc concentration cell described by,Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s) is 23.0 mV at
1. 1 answer
2. asked by Chris
3. 902 views
I have 50.00 to buy 50 animals. Chickens are .50, cows are 2.50,and birds are 5.00. How many of each animal can i purchase?
1. 3 answers
2. asked by chelsea
3. 898 views
What is the simplified form of (2a2b)2 (3ab3c)/4a4b8c2
1. 3 answers
2. asked by Keondre
3. 897 views
The probablility that a person drinks at least five cups of coffee per day is .24, and the probability that a person has high
1. 2 answers
2. asked by Anonymous
3. 879 views
You have a ten question multiple choice test in your next class and you did not study at all. Each question has four choices and
1. 2 answers
2. asked by Liz
3. 846 views
A 69-kg base runner begins his slide into second base when he is moving at a speed of 3.7 m/s. The coefficient of friction
1. 0 answers
2. asked by Abdalla A.
3. 843 views
What does the best estimate mean after doing the liner regression equation
1. 4 answers
2. asked by Anonymous
3. 838 views
Personality disorders are thought to originate during childhood but many health professionals are reluctant to diagnose
1. 2 answers
2. asked by Kelly
3. 826 views
Assume that body temperatures of healthy adults are normally distributed with a mean of 98.2°F and a standard deviation of
1. 1 answer
2. asked by ali awan
3. 813 views
A study in 2005 showed that 70% of parents felt that their children were too ______ school, familyfinances, and divorce.
1. 1 answer
2. asked by Nab
3. 813 views
An automobile traveling 80 mi/hr has wheels 31 inches in diameter. If the car is brought to a stop uniformly in 58 turns of the
1. 1 answer
2. asked by CPhy
3. 804 views
Maximize P= 8x1+12x2Subject to 2x1+4x2<=24 3x1+3x2<=21 4x1+2x2<=20 X1, x2 => 0 Using the SIMPLEX method. Clearly state the row
1. 1 answer
2. asked by SHelley
3. 802 views
If x is a binomial variable with p = .4 and n = 25, write the probability that you would be looking for after you have applied
1. 1 answer
2. asked by Anonymous
3. 799 views
A fisherman's scale stretches 2.3 cm. when a 2.5 kg. fish hangs from it. What will be the frequency of vibration if the fish is
1. 0 answers
2. asked by Nicole
3. 797 views
These are some more questions, they're not multiple answers they're S.A so the questions will be first and my answers will be on
1. 3 answers
2. asked by Annabelle Hartz
3. 797 views
While waiting to board a helicopter, you notice that the rotor's motion changed from 340 rev/min to 265 rev/min in one minute.
1. 1 answer
2. asked by Anon
3. 796 views
The price of a hat is reduced by a% from its regular price, and then is raised by a% from the reduced price. If the resulting
1. 0 answers
2. asked by Shin
3. 794 views
When boiled with concentrated aqueous alkali, fats and oils dissolve, but waxes do not. Explain the difference.
1. 0 answers
2. asked by Moyer
3. 791 views
A company was recently formed with $ 50,000 cash contributed to the company by stock-holders. The company then borrowed $ 20,000
1. 0 answers
2. asked by dan
3. 791 views
each step of a ladder increases one's vertical height 40.0cm. If a 90 kg painter climbs 8 steps of the ladder, what is the
1. 1 answer
2. asked by Anonymous
3. 783 views
Using logarithm table,solve,0.016*0.084/0.48
1. 4 answers
2. asked by Haleemath
3. 773 views
If A tank with a flat bottom is filled with water to a height of four meters. what is the pressure at any point at the bottom of
1. 1 answer
2. asked by Caitlin
3. 769 views
If a flywheel 8 ft. in diameter rotates at 80 rpm., what is the linear velocity of a point on the outside edge, in feet per
1. 1 answer
2. asked by Garrett
3. 755 views
A 14 gram sample of a substance that's used to preserve fruit and vegetables has a k-value of 0.1092. Find the substance's
1. 0 answers
2. asked by Tristan
3. 754 views
1. 7x2x2.1=15.122. 4.3x8.5=36.55 3. 2.64x1.4=3.696 4. 14.23x8.21=116.8283 5. 5.01x11.6=58.116 6. 9.001x4.2 37.8042
1. 3 answers
2. asked by Jerald
3. 736 views
find acute angles A and B satisfying cot(A+B)=1 , cosec(A-B)=2
1. 1 answer
2. asked by ajit yadav
3. 724 views
A quasi-scientific study was done to find some link to autism. In the study, it was found that children who had an autistic
1. 1 answer
2. asked by Steve
3. 723 views
An upscale clothing boutique charges $300 for a brand name pair of jeans, which is 50% more than the amount it costs the store
1. 3 answers
2. asked by Shin
3. 717 views
According to the Census Bureau's 2002 American Community Survey, the average travel time to work of workers 16 years and over
1. 0 answers
2. asked by ali awan
3. 712 views
A meter stick is suspended vertically at a pivot point 27 cm from the top end. It is rotated on the pivot until it is horizontal
1. 1 answer
2. asked by Anon
3. 702 views
In China, Confucius wrote down his philosophy which explained how people should live their lives. Confucianism teaches that each
1. 1 answer
2. asked by Jerald
3. 701 views
Please check my answers (at the bottom) with these questions.1. An apple quickly changes color when exposed to air. This
1. 4 answers
2. asked by Annabelle Hartz
3. 700 views
A 16 lb block rests on a horizontal frictionless surface. A cord attached to the block, running horizontally, passes over a
1. 0 answers
2. asked by Science
3. 692 views
A mechanic pushes a 2.60 103-kg car from rest to a speed of v, doing 5,000 J of work in the process. During this time, the car
1. 0 answers
2. asked by Abdalla A.
3. 691 views
Use the text box below to do a five-minute free-writing session. Time yourself. If you would like to try again, give yourself
1. 1 answer
2. asked by Carlos
3. 690 views
A ship travels NE (45 degrees) at 18 knots with a current of 8 knots direction North. What is the bearing of the ship and speed
1. 1 answer
2. asked by Elizabeth McKay
3. 688 views
7. In which of the following sentences is the underlined verb in the future perfect tense?A. They will take the dog to the park
1. 1 answer
2. asked by NANA
3. 687 views
A,B,C,D,E,F are 6 consecutive points on the circumference of a circle such that AB=BC=CD=10,DE=EF=FA=22. If the radius of the
1. 1 answer
2. asked by fudgee
3. 679 views
If a galaxy is traveling away from us at 2.0% of the speed of light, roughly how far away is it?t= light years I got 2.4x10^8
1. 2 answers
2. asked by Leila
3. 676 views
Two trains are moving in opposite diections on parallel tracks and are appoaching a station. Horns on both trains are producing
1. 1 answer
2. asked by reddy22
3. 669 views

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