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Questions Asked on December 4, 2011

1)How many protons and electrons are in a sulfate ion SO4^2- ?I know the answer is 48 protons and 50 electrons but i do not know
1. 13 answers
2. asked by Hannah
3. 21,873 views
How many ways can six different books be arranged on a shelf if one of the books is a dictionary and it must be on an end?
1. 28 answers
2. asked by Rock
3. 13,893 views
1. Given the curvea. Find an expression for the slope of the curve at any point (x, y) on the curve. b. Write an equation for
1. 3 answers
2. asked by Fareha
3. 4,728 views
A factory produces bicycles at a rate of 80+0.3t^2−1.1t bicycles per week (t in weeks). How many bicycles were produced from
1. 3 answers
2. asked by saud
3. 4,230 views
if a person is 6 feet tall and casts a 9 foot shadow, how tall would the shadow of a 100 foot tall tree be?
1. 3 answers
2. asked by liz
3. 3,650 views
In general, the air temperature decreases 12F for every 4000 feet increase in altitude. If a hiker climbs 3000 feet, by how much
1. 9 answers
2. asked by Kate
3. 3,605 views
A bowling ball of mass M and radius R is thrown along a level surface so that initially ( t= 0) it slides with a linear speed
1. 4 answers
2. asked by Helen
3. 3,411 views
three times a first number decreased by a second number is 25. the first number increased by four times the second number is
1. 4 answers
2. asked by Anonymous
3. 2,875 views
Trailing by two points, and with only 1.00 s remaining in a basketball game, a player makes a jump-shot at an angle of 35.0o
1. 1 answer
2. asked by Mark
3. 2,705 views
the perimeter of a rectangle is 68cm. the length is 2cm less than 3 times the width. find the length and width.
1. 2 answers
2. asked by kit kat
3. 2,699 views
a 30 foot ladder leans against a wall at a 71 degree angle of elevztion find the distance of a ladder's base to the wall
1. 1 answer
2. asked by jennifer
3. 2,362 views
A 650 N student stands on a scale in an elevator. As the elevator starts to move, the scale reads 780 N.a. Find tha
1. 1 answer
2. asked by Tomomi
3. 2,239 views
If a force of 15.0 N directed east acts on a stationary 5.00 kg mass, what are its acceleration, displacement, and velocity
1. 2 answers
2. asked by Tomomi
3. 2,224 views
A college professor told her students, “The purpose of a management course is to teach students about management, not to teach
1. 3 answers
2. asked by Sonya
3. 1,964 views
Ectothermic organisms have body temperatures that vary with the temperature of their surroundings. Discuss the effect this
1. 1 answer
2. asked by John
3. 1,868 views
If Q2 = D5 = MedianWhich means if the 2nd quartile equals to 5th decile and also the median.. then how do we find out the fourth
1. 1 answer
2. asked by HM
3. 1,861 views
1) How many miles are covered in a 15km race? (1 mile=5280, 12 in=1 ft, 1in=2.54cm)I know that I have to convert but I do not
1. 2 answers
2. asked by Hannah
3. 1,830 views
Using the lists of possible answers, use the letters assigned to the characters/people to identify who would be the speaker of
1. 25 answers
2. asked by SHAY
3. 1,798 views
A lottery game has balls numbered from 0 - 9If a ball is selected at random, what is the probability of selecting an even
1. 2 answers
2. asked by HM
3. 1,737 views
Which of the following forms the core of the Republican Party?a. Hispanic Catholics b. Anglo Catholics c. Anglo Protestants d.
1. 1 answer
2. asked by HM
3. 1,691 views
Mr. Saurik proposed that the function h(t) = 6sin(3pi(t) - pi/3) + 5, where h(t) is in meters and t is in seconds, models the
1. 2 answers
2. asked by Alisha
3. 1,627 views
I'm doing a research paper on Ernest Hemingway. I have to write 1,500 word essay on it. I chose to write about his jobs that
1. 14 answers
2. asked by NeedHelp
3. 1,611 views
A spinner has equal regions numbered 1 through 21. What is the probability that the spinner will stop on an even number or a
1. 1 answer
2. asked by Anonymous
3. 1,582 views
Consider the 671 N weight held by two cablesshown below. The left-hand cable had ten- sion T2 and makes an angle of 47� with the
1. 13 answers
2. asked by laura
3. 1,576 views
Water flows through a horizontal tube of diameter 2.9cm that is joined to a second horizontal tube of diameter 1.5 cm. The
1. 1 answer
2. asked by jazz
3. 1,540 views
the momentum of 900kg car initially moving north at 10m/s increases by 10,800. calculate the final velocity of the car.
1. 1 answer
2. asked by gem
3. 1,496 views
What is the energy released in the fusion reaction:2H+2H--> 4He + Q? How do I calculate this?
1. 2 answers
2. asked by Mariana
3. 1,488 views
Gerrad is a painter. he is using a canvas that is in the shape of a regular hexagon. The perimeter of the canvas is 78 in. The
1. 3 answers
2. asked by Cj
3. 1,447 views
1. A rectangle has a constant area of 200 square meters and its length L is increasing at the rate of 4 meters per second.a.
1. 0 answers
2. asked by Fareha
3. 1,345 views
Which of these was NOT a major factor in the emergence of a two-party system in Texas?a. The Shivercrats b. The civil rights
1. 1 answer
2. asked by HM
3. 1,339 views
The following table represents the diameter of the cross section of a wire at continuous heights (feet) above the ground. Assume
1. 0 answers
2. asked by Paige
3. 1,339 views
Consider the 671 N weight held by two cablesshown below. The left-hand cable had ten- sion T2 and makes an angle of 47� with the
1. 1 answer
2. asked by laura
3. 1,333 views
1) what mass of oxygen will react with 2.64g of magnesium?2Mg + O2 -> MgO I was going to do 2.64g * (1/2) from the equation but
1. 0 answers
2. asked by Hannah
3. 1,244 views
For which salt in each of the following groups will the solubility depend on pH?Pb(OH)2 PbCl2
1. 2 answers
2. asked by william
3. 1,190 views
Cleanlinesswhat is it? why practice it? how do you practice it? what would it look like if..... reflections: action plan: plz
1. 6 answers
2. asked by smiley face
3. 1,166 views
he current term-structure of spot interest rates for safe zero-coupon bonds is as follows:Maturity, in years Interest rate(r) 1
1. 0 answers
2. asked by Robbie
3. 1,165 views
Someone verify if this is correct, please!1. Draw a distance versus time graph that corresponds to the walk described below.
1. 3 answers
2. asked by Melinda
3. 1,162 views
which of the following dishes is an example of cajun cuisine
1. 2 answers
2. asked by Anonymous
3. 1,160 views
I need help with this assignment.Apply the appropriate Level II HCPCS code modifier for each of the following examples. Explain
1. 5 answers
2. asked by amanda
3. 1,134 views
1. In what country does 40 degrees N latitude cross 40 degrees E longitude? Turkey2. Which city is the capital of Hungary:
1. 1 answer
2. asked by Reed
3. 1,132 views
I'm trying to add more details to this paragraph on my assignment:Lastly, Temporary Marriage Licenses are not a good solution to
1. 0 answers
2. asked by Alex L.
3. 1,129 views
A triangular plate with a non-uniform areal density has a mass M=0.700 kg. It is suspended by a pivot at P and can oscillate as
1. 0 answers
2. asked by liv
3. 1,122 views
quadrilateral ABCD has right angles at B and D. If ABCD is kite-shaped with AB=AD=20 and BC=CD=15, find the radius of the circle
1. 1 answer
2. asked by Hanna
3. 1,120 views
An insulated Thermos contains 140 cm3 of hot coffee at 89.0°C. You put in a 11.0 g ice cube at its melting point to cool the
1. 2 answers
2. asked by mar13
3. 1,118 views
A court has ordered Security Enterprises to pay 200000 in two years and 500000 in five years. In order to meet this important
1. 1 answer
2. asked by Jack
3. 1,104 views
What are some global health issues related to mexico?
1. 1 answer
2. asked by maria
3. 1,081 views
Techniques for interest groups to reach a wide number of people and influence policy makers and voters include all of the
1. 1 answer
2. asked by Michelle
3. 1,078 views
Please help again. How many grams of lithium are required to completely react with 70.7 mL of N2 gas at STP when given the
1. 2 answers
2. asked by Lisa
3. 1,069 views
For a college application, Macawi must select one of five topics on which to write a short essay. She must also select a
1. 3 answers
2. asked by Rock
3. 1,052 views
A balloon is floating around outside your window. The temperature outside is 39 degree celsius, and the air pressure is 0.800atm
1. 1 answer
2. asked by Mary
3. 1,051 views
(a) Why is the sun considered to be located in the central disk of our galaxy? (b) What is thought to occupy the center of the
1. 1 answer
2. asked by Shirley
3. 1,046 views
solve the formula for the indicated variablesolve the volume of a rectangular prism v=lwh, for h
1. 3 answers
2. asked by ann
3. 1,044 views
The following table represents the diameter of the cross section of a wire at continuous heights (feet) above the ground. Assume
1. 0 answers
2. asked by Paige
3. 1,025 views
can you please try to help me understand this?Q:The table below shows a distribution and the observed frequencies of the values
1. 1 answer
2. asked by destiny
3. 1,014 views
A point P in the first quadrant lies on the parabola y=x^2. Express the coordinates of P as functions of the angle of
1. 1 answer
2. asked by JEUCD 12311
3. 1,008 views
General Chemistry 11111/28/11 Chapter 9 Extra Credit Quiz Name: _____________________________ Section #______________________
1. 0 answers
2. asked by Olayinka
3. 992 views
A force of 15 N is applied at an angle of 30 degrees with the horizontal on a 0.75 block at rest on a frictionless surface.a.
1. 1 answer
2. asked by Tomomi
3. 978 views
if we reason from the fact that all A's observed so far are B's to the conclusion that all A's whatsoever are B's, Which kind of
1. 4 answers
2. asked by anon
3. 967 views
We are doing trig identities in school. I need help with these five:1.1+sinx/1-sinx=cscx+1/cscx-1 2.tanx+sinx/1+cosx=tanx
1. 1 answer
2. asked by Jay
3. 950 views
A bakery makes bread in batches. Several loaves per batch are rejected due to defects. Your friend says that the total number of
1. 2 answers
2. asked by Anon
3. 934 views
Find the heat that flows in 1 s through a lead brick 18 cm long if the temperature difference between the ends of the brick is
1. 1 answer
2. asked by Anonymous
3. 929 views
A gaseous mixture containing 5 moles of H2 and 7 moles of Br2 reacts to form HBr. Write a balanced chemical equation. Which
1. 0 answers
2. asked by Zoe
3. 928 views
please solve2x is greater than or equal to 12
1. 1 answer
2. asked by Lavern
3. 926 views
The difference of two numbers is 5. Three times the larger, decreased by 5 times the smaller is 7. Find the numbers
1. 1 answer
2. asked by kit kat
3. 905 views
A child of mass 40 kg stands beside a circular platform of mass 100 kg and radius 1.8 m spinning at 2.6 rad/s. Treat the
1. 0 answers
2. asked by John
3. 901 views
The equation of a transverse wave traveling along a very long string is given by y = 5.2 sin(0.013π|x + 4.7π|t), where x and y
1. 1 answer
2. asked by Kyle
3. 886 views
6.1 Development of the Two-party SystemPolitical scientists and historians usually focus on a few key elements of Texas's
1. 2 answers
2. asked by HM
3. 880 views
A circular disk of mass 0.3 kg and radius 40 cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of
1. 0 answers
2. asked by John
3. 871 views
If 27 J of work are needed to stretch a spring from 18 cm to 24 cm and 45 J are needed to stretch it from 24 cm to 30 cm, what
1. 0 answers
2. asked by Alan
3. 866 views
A toddler’s playground has two slides on either side. The slide on the left is situated at a 45° angle to the ground and is
1. 1 answer
2. asked by Silvia
3. 864 views
A sinusoidal wave is traveling on a string with speed 30.00 cm/s. The displacement of the particles of the string at x = 15 cm
1. 1 answer
2. asked by Kyle
3. 840 views
A company assembles drills using components from two sources. Acemart supplies 91% of the components and Begud supplies the
1. 1 answer
2. asked by Nabiha
3. 832 views
1. Let y = f(x) be the continuous function that satisfies the equation x^4-5x^2y^2+4y^4=0 and whose graph contains the points
1. 1 answer
2. asked by Fareha
3. 826 views
Jack usually mowes his lawn in 7 hours. Marilyn can mow the same yard in 4 hours. How musch time would it take for them to mow
1. 4 answers
2. asked by Angela
3. 822 views
solve using the addition and multiplication principle5x+2-4 less than or equal to 13
1. 1 answer
2. asked by Lavern
3. 819 views
The curve C with equation y=fx passes through the point (3, 14/2)given that f'(x)=2x+3/xsquared a) find f(x) (5 marks) b) verify
1. 2 answers
2. asked by Nabiha
3. 819 views
A roller coaster car speeds down a hill past point A and then rolls up a hill past hill B.The car has a speed of 16.9 m/s at
1. 0 answers
2. asked by Jake
3. 802 views
I need help with this question,it says to find the instantaneous rate at distance t = 6s with the given graph First of all, it
1. 11 answers
2. asked by Melinda
3. 801 views
A light spring of constant k = 158 N/m rests vertically on the bottom of a large beaker of water (Fig. P9.34a). A 5.55 kg block
1. 2 answers
2. asked by Arianna
3. 794 views
What are common types of music in Alsace? Do you know of any webstes with this info?
1. 1 answer
2. asked by Sally
3. 782 views
Calculate the number of sides of a regular polygon whose interior angles are each 156 degrees.
1. 1 answer
2. asked by AJ
3. 778 views
A puck of mass 80.0 g and radius 4.10 cm slides along an air table at a speed of 1.50 m/s as shown in the figure below. It makes
1. 0 answers
2. asked by Anonymous
3. 772 views
A block of mass 0.433kg is hung from a vertical spring and allow it to reach equilibrium rest. As a result the spring is
1. 1 answer
2. asked by briana wiliams
3. 758 views
a die is rolled three times. find the chance that not all the rolls show 3 or more spots
1. 1 answer
2. asked by Fay
3. 756 views
A bowling ball of mass M and radius R is thrown along a level surface so that initially ( t= 0) it slides with a linear speed
1. 0 answers
2. asked by Helen
3. 756 views
Could someone please read my (corrected) summary in Spanish for grammar and fluidity? The English version appears below for
1. 2 answers
2. asked by Lisa
3. 745 views
a company sells snack-size boxes of raisins with dimensions 5 in. by 2.5 in. by 1.5 in., each weighing 2 oz. They want to make a
1. 2 answers
2. asked by danielle
3. 728 views
Q2 = D5 = MedianThen what is D4 going to be? I am talking about Deciles here
1. 0 answers
2. asked by HM
3. 715 views
How much work is done by the system when 2.00 moles of O2 expand from a volume of 3.00 liters to a volume of 8.5 liters against
1. 1 answer
2. asked by Ashlyn
3. 715 views
A researcher observes hydrogen emitting photons of energy 10.2 eV.What are the quantum numbers of the two states involved in the
1. 0 answers
2. asked by Paige
3. 714 views
On an air track, a 403.0 glider moving to the right at 2.30 collides elastically with a 501.0 glider moving in the opposite
1. 1 answer
2. asked by Lindsay
3. 709 views
A man has 400 meters of fencing and wants to fence in a rectangular field next to a straight river. Assuming that no fencing is
1. 1 answer
2. asked by Sejul
3. 704 views
The consecutive terms of an arithmetic progression are 5-x, 8, 2x. Find the common difference of the progression.
1. 1 answer
2. asked by Watermelon
3. 701 views
Could someone please proofread this summary in Spanish on a short story? The English version is also below. Thank you.Spanish:
1. 1 answer
2. asked by Lisa
3. 697 views
The first right given to every American citizen at birth is the right to freedom of speech and religion. Therefore, anyone would
1. 3 answers
2. asked by student
3. 693 views
These four religions have some similarities but are very different in their beliefs and their cultural differences to society.
1. 1 answer
2. asked by student
3. 688 views
An insulated Thermos contains 140 cm3 of hot coffee at 89.0°C. You put in a 11.0 g ice cube at its melting point to cool the
1. 1 answer
2. asked by mar13
3. 686 views
In the movie The Shawshank Redemptionhow does the prison in the film try to rehabilitate its inmates? Was it sucessful? and
1. 1 answer
2. asked by Heather
3. 681 views
A turntable with a moment of inertia of 0.017 kg*m^2 rotates feely at 3.3 rad/s. A circular disk of mass 240 g and diameter 26
1. 1 answer
2. asked by John
3. 673 views
Vibrations from a 650 Hz tuning fork sets up standing waves in a string clamped at both ends. The wave speed for the string is
1. 1 answer
2. asked by Kyle
3. 663 views

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