Monday

July 6, 2015

July 6, 2015

Number of results: 40,297

**Physical science**

An object is projected vertically upwards and returns to the point of projection 12s later. Ignore air resistance and determine the velocity with which it was projected?
*February 7, 2011 by Thakgalo sakwana*

**gen chem 2**

In the chemical kinetics experiment, determine the dilution of the stock bleach solution. The bleach used will be around 5.5% (weight/volume). Convert this to molarity
*February 8, 2011 by jen*

**chemistry**

an ideal gas at 75.0 c and 760 .mm hg is contained in a flexible vessel. Its volume is doubled and the pressure remains.unchanged .determine the temperature of the gas as a consequence of these changes
*August 26, 2011 by devin boutte*

**physics**

a student pushes a 10 kg box across a warehouse floor. if the boz accelerates at 3 m/s/s and the force of friction is 20 newtons. determine the size of the students applied force?
*March 14, 2011 by hi*

**PHYSICS!!**

a student pushes a 10 kg box across a warehouse floor. if the boz accelerates at 3 m/s/s and the force of friction is 20 newtons determine the size of the students applied force
*March 14, 2011 by chrissy*

**Acid/Base Chem**

Determine the volume (in mL) of 1.18 M perchloric acid (HClO4) that must be added to 747 mL of 0.976 M sodium hydrogen citrate (Na2C6H6O7) to yield a pH of 4.77.
*March 30, 2011 by Sam*

**Chemistry**

Use the equation to determine what volume of nitrous oxide can be produced from the decomposition of o.55 moles of ammonium nitrate useing the equation: NH4NO3 (s)--> N2O (g) + 2H2O (g)
*April 14, 2011 by Jane*

**physics **

An FM radio station broadcasts its signal at a frequency of 9.15 ×107 hertz. Determine the wavelength of the signal in air. Round your answer to the nearest hundredth of a meter.
*April 18, 2011 by ashley --*

**Logic**

Using truth tree decomposition, determine the consistency of the set of propositions. Include line numbers and justifications, and recover the truth values if consistent. {A and B, ~B v C}
*May 16, 2011 by Isaac*

**math**

katie makes 70% of her shots from the free throw line . can you determine how many consecutive free throws she must make in order to increase her precent. explain
*June 8, 2011 by amanda*

**chemistry**

so i have a table that tell me whether the its a strong/ weak acid/ base but how do i use it to determine whether the equation will favor left or right of the equilibrium?
*August 6, 2011 by Henry*

**physics**

A linear charge of nonuniform density E(x)=bx C/m, where b = 5.2 nC/m2, is distributed along the x-axis from 4.9 m to 6 m. Determine the electric potential (relative to zero at infinity) of the point y = 8.6 m on the positive y-axis.
*September 24, 2011 by physics*

**Physics**

A concave mirror has a focal length of 37 cm. Determine the object position for which the resulting image is upright and four times the size of the object. Answer in units of cm
*September 25, 2011 by Leslie*

**Physics **

A mercury barometer reads 744 mm on the roof of a building and 769 mm on the ground. Assuming a constant value of 1.29 kg/m3 for the density of air, determine the height of the building.
*March 5, 2012 by Jackie *

**physics **

A mercury barometer reads 744 mm on the roof of a building and 769 mm on the ground. Assuming a constant value of 1.29 kg/m3 for the density of air, determine the height of the building.
*March 5, 2012 by Jackie *

**please help!! algebra**

systems of nonlinear equations i need to help i have tried this problem but i cannot find the right answer i need to determine the real solutions for this: x^2+4xy=10 4x^2-xy=6
*April 9, 2012 by ashley*

**physics**

determine the acceleration of a 25 kg crate being dragged across a floor by a 150 N force at a 42 degree angle above the floor where the kinetic coefficient of friction is .52.
*April 23, 2012 by Syd*

**physics**

The inside diameters of the larger portions of the horizontal pipe depicted in Figure P9.47 are 2.80 cm. Water flows to the right at a rate of 1.80 10-4 m3/s. Determine the inside diameter of the constriction.
*June 20, 2012 by henry*

**math**

Draw one more rectangle using a ratio of 1:3 (a rectangle that is triple the width and length of the original shape). Determine and label the perimeter and area.
*August 3, 2012 by monica*

**Chem II/College**

Using the Clausius Clapeyron equation determine the vapor pressure of water at 50.0 degrees C. The molar heat of vaporization of water is 40.7 kJ/mol. How do you solve this?
*October 7, 2012 by Bianca*

**Physics HELP!!**

Two masses of 3.40kg and 4.55kg are connected by a light string that passes over a frictionless pulley. Determine the tension in the string. b). Calculate the acceleration of m
*October 28, 2012 by Angie*

**Physics**

a car that weights 15000 N is initially moving at 60 km/hour when the brakes are applied. The car is brought to a stop at 30 meters. Determine the magnitude of the braking force
*November 14, 2012 by Gloria*

**science,physics**

A ship is heading due north at 12km/h in a tide moving 5km/h westward. Determine the magnitude and direction of the resultant velocity of the ship?
*November 25, 2012 by secrated*

**Science **

4. Given the chemical formulas of the following compounds, name each compound and state the rules you used to determine each name. • RbF • CuO • (NH4)2C2O4
*December 19, 2012 by Taylor*

**Chemistry Urgent please help! Test tomorrow **

if you have a mixture of sodium chloride and sodium bromide, could you use its conductance to determine the concentration of each solution? explain
*January 9, 2013 by Anonymous*

**Physics**

A particle is moving along the x-axis subject to the potential energy function U(x) = a(1/x) + bx2 + cx – d, where a = 6.00 J m, b = 26.0 J/m2, c = 3.00 J/m, and d = 26.0 J. Determine the x-component of the net force on the particle at the coordinate x = 3.37 m. Not sure what ...
*February 27, 2013 by Thomas*

**math**

Tricia wants to determine the probability of getting two 1’s when two number cubes are rolled. She makes a tree diagram and uses it to list the possible outcomes
*March 26, 2013 by xy*

**physics**

A child accelerates upwards in an elevator which causes his apparent weight to become 405N. Determine the magnitude of the elevators acceleration if his normal weight is 400N.
*March 29, 2013 by maddi*

**Physics! please help me!**

A 0.98 N bird descends onto a branch that bends and goes into SHM with a period of 0.46 s. Determine the effective elastic force constant of the branch.
*April 24, 2013 by Chelsea*

**Physics**

A winch is capable of hauling a ton of bricks vertically two stories (6.50 ) in 22.5 If the winch’s motor is rated at 5.00 , determine its efficiency during raising the load.
*June 5, 2013 by Anonymous*

**science**

The atomic mass of lithium is 6.94, the naturally occurring isotopes are 6Li = 6.015121 amu, and 7Li = 7.016003 amu. Determine the percent abundance of each isotope.
*June 11, 2013 by Annika*

**Math check**

Consider the following. (Give your answers correct to two decimal places.) (a) Determine the value of the confidence coefficient z(á/2) for 1 - á = 0.87. Incorrect: Your answer is incorrect. . 0.44
*June 15, 2013 by Tom 8*

**Physics**

When point charges q1=+8.4uC and q2=+5.6uC are brought near each other, each experiences a repulsive force of magnitude 0.66N. Determine the distance between the charges.
*August 28, 2013 by sarah*

**Physics**

When point charges q1=+8.4uC and q2=+5.6uC are brought near each other, each experiences a repulsive force of magnitude 0.66N. Determine the distance between the charges.
*August 28, 2013 by sarah*

**Physics**

When point charges q1=+8.4uC and q2=+5.6uC are brought near each other, each experiences a repulsive force of magnitude 0.66N. Determine the distance between the charges.
*August 28, 2013 by sarah*

**PHYSICS**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C
*September 13, 2013 by vishal*

**physics**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C
*September 22, 2013 by suhani*

**PHYSICS**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C
*September 23, 2013 by suhani*

**PHYSICS**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C
*September 24, 2013 by suhani*

**PHYSICS**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C
*September 27, 2013 by suhani*

**PHYSICS**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C
*September 28, 2013 by physics*

**PHYSICS**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C
*September 28, 2013 by physics*

**PHYSICS**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C
*September 29, 2013 by physics*

**calculus**

Determine the value(s) of x where the function will have an instantaneous rate of change of 14. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = x3 + 33 x2 + 14 x + 39
*October 3, 2013 by anna*

**dynamics**

a 2kg ball revolves in a horizontal circle as shown at a constant speed of 1.5m/s. Knowing that L=600mm, determine (a) the angle that the cord with the vertical (b) tension in the cord.
*November 20, 2013 by kit*

**math**

The formula D = t + tsp is used to determine how much turkey, stuffing, and potatoes a family will consume. What is the formula solved for t? I have no idea how to complete this problem
*December 2, 2013 by B8*

**Physics 1**

Two balls have the same size and mass. One is hollow, the other one is solid. How would you determine which is which without breaking them apart?
*April 17, 2014 by Timothy*

**Math **

When you return hone, you have $30 in your pocket. If the movie costs $8.00 and the pizza costs you $6.00, which equation could you use to determine how much money you had at the beginning of the day?
*April 23, 2014 by Fayth*

**calculus**

Beth leaves a dock in a motorboat travelling at 14 m/s. She heads downstream at an angle of 40° to the current, which flows at 6 m/s. Determine how long it takes for Beth to travel 400 m
*August 16, 2014 by Liz*

**statistics**

Determine the probability that the single card drawn from a standard 52-card deck is a four, a five, or a spade. Illustrate the probabilities using a Venn Diagram
*September 6, 2014 by thankyou*

**Science**

To determine Kf you will need to know the total concentration of Fe3+ and SCN- present in the solution. calculate these concentration and record them in the result.(show your working for one of the example.
*September 15, 2014 by Okafor*

**Math**

27 3 5 2 = 19 I am trying to determine what symbol I need between each number to make the sentence true. +, - X or / I am not clear if I can use the same symbol multiple times in the equation.
*September 22, 2014 by VIckie*

**Physics**

In a football game, a quarterback (G), hit simultaneously by two linebackers, experiences horizontal forces of 412 N [27.0° W of N] and 478 N [36.0° N of E]. Determine the net force of the quarterback.
*October 25, 2014 by Han*

**Chemistry **

A 1.516 M solution is made by dissolving 1.570 g of the compound in 0.2238 mol of water. Determine the molar mass and apparent molecular formula of the compound.
*November 4, 2014 by Anonymous*

**physics**

a 7 kg ball is thrown into the air from ground level with an initial velocity of 24m/s. Determine the ball's maximum height. Use conservation of energy. help!!!
*November 16, 2014 by Isabelle*

**physics**

a 0.25 kg mass at the end of a spring oscillates 2.2 times per second with an amplitude of 0.15m. Determine the speed when it passes the equilibrium point and the speeed when it is 0.1 m from equilibrium
*January 25, 2015 by michael *

**CHEMISTRY!!!!**

Determine the pH at the equivalence point in the titration of 41.0 mL 0.096 M formic acid with 0.108 M NaOH at 25oC. Calculate the pH of a solution that is 0.22 M pyridinium ion (C5H5NH+) at 25oC.
*March 5, 2015 by Michelle*

**Chemistry **

What would be the procedure for titrating a beverage to determine the concemtration of weak acid? What reagents would be needed? What appropiate measurements and observations must be made?
*April 1, 2015 by Anonymous*

**Chemistry**

Determine the pH of a solution of 12.00 mL of 0.2 M acetic acid with 10 mL of a 0.025M NaOH? (Ka = 1.8E–5) I've calculated my excess moles of acetic to be .00215. Total volume being .022L. Where do I go from here? Thanks!
*April 21, 2015 by Jessica *

**Math**

A firm wants to manufacture an open steel container with a capacity 4l. Determine the dimensions of the container with a square base if they want to use the minimum amount of sheet metal
*June 6, 2015 by M Mgaga*

**7th grade math Ms. Sue please help I have no idea!**

#10 On a blueprint, 1 inch = 13 feet. If the dimensions of the playroom on the blueprint are 0.35 inches x 1.25 inches, what are its actual measurements? * *Show all your work for full credit* #11 The coordinate of rectangle ABCD are given. Find the coordinates of its image ...
*November 5, 2012 by Delilah*

**statistics**

To find out what people think, the Gallup Poll selected a random sample of 520 women and 506 men. The pollsters showed them a list of personal attributes and asked them to indicate whether each attribute was “generally more true of men or of women”. When asked about ...
*June 27, 2014 by Devin*

**Food engineering/biology**

Hey Can anyone help me out with this problem. For part a i understand i plot microbial numbers against time on semi log paper to determine D value for the two temperatures. But i'm unsure how to do part b. Alicyclobacillus acidoterrestris is a quite hat resistant microorganism...
*May 23, 2010 by Jennifer*

**check over--**

this is a book review for 9th grade honors english. does it look OK? are there any errors or anything? thanks-- The novel Dairy Queen by Catherine Murdock is the story of 15-year-old D.J. Schwenk who lives in Red Bend Wisconsin. Her father gets injured and can no longer take ...
*May 29, 2008 by Anonymous*

**accounting**

Situation Parent, Inc. is contemplating a tender offer to acquire 80 percent of Subsidiary Corporation's common stock. Subsidiary's shares are currently quoted on the New York Stock Exchange at $85 per share. In order to have a reasonable chance of the tender offer attracting...
*January 14, 2010 by John Ackah*

**Applied Chemistry Project Help!!!**

Research and describe one current application of the knowledge of the atom. This application can be in any field of your choice. This means the field can be scientific, such as medicine, or nonscientific, such as entertainment. The purpose of this assignment is to learn the ...
*December 30, 2014 by Maria*

**ALGEBRA WORD PROBLEM! HELP!**

And if a length of a rectangle is 3 more than twice the width and the are is 90 cm squared than what are the dimensions of the rectangle? The width of the rectangle is 43.5 and the length of the rectangle is 87. All together when you add it up it will make 90 cm squared. If ...
*January 23, 2007 by Judy*

**math **

please check my answers 1. the ratio of 5 3/5 to 2 1/10=8to 3 2.the ratio of 7 dimes to 3 quarters =14 to 15 3.Marc took 3 hours (h) to mow a lawn while Angelina took 150 minutes (min) to mow the same lawn a week earlier. Write the ratio of Marc’s time to Angelina’s time as a ...
*September 26, 2009 by p*

**MATH**

please check my answers 1. the ratio of 5 3/5 to 2 1/10=8to 3 2.the ratio of 7 dimes to 3 quarters =14 to 15 3.Marc took 3 hours (h) to mow a lawn while Angelina took 150 minutes (min) to mow the same lawn a week earlier. Write the ratio of Marc’s time to Angelina’s time as a ...
*September 26, 2009 by P*

**business**

France is an independent nation in Western Europe and the center of a large overseas administration. It is the third-largest European nation (after Russia and Ukraine). In ancient times France was part of the Celtic territory known as Gaul or Gallia. Its present name is ...
*October 11, 2010 by Rebecca*

**Chemistry**

How many kcal of heat energy are required or released when 1.73 moles of butanol , C4H9OH, is warmed from -175.8 degrees F to 360.9 degrees F? The following information concerning butanol applies: normal melting point: 12.5 degrees C normal boiling point: 162.8 degrees C Cp (s...
*September 30, 2007 by Garret*

**please proofread this essay?**

I would like to take this opportunity to let you know that I am interested in applying for AP United States History. I believe that taking AP United States History will prepare me well for my college education and beyond. In addition, this course will enable me to gain a ...
*February 10, 2009 by Anonymous*

**MATH HELP**

The amount of fill (weight of contents) put into a glass jar of spaghetti sauce is normally distributed with mean ì = 843 grams and standard deviation of ó = 9 grams (d) Find the mean of the x distribution. (Give your answer correct to the nearest whole number.) 843 Was my ...
*June 19, 2013 by TOM7*

**writing**

I am having difficult time trying to find out what is actually at the base or root of the healthcare crisis in this coutry. I'm really getting confused. I have to write a 10 page argumentative essay including all of the evidence to support my claim...Is it the lack of Medicare...
*October 27, 2006 by Diana/for bob p*

**Statistics**

Find the probability that the sum is as stated when a pair of dice is rolled. A.4 or 11 or doubles B. 8,given that the sum is greater than 4. C.Even,given that the sum is greater than 4. A. 4 can be obtained by 1&3, 3&1 or 2&2. 11 can only be obtained by 5&6 or 6&5. Doubles ...
*April 2, 2007 by Mary*

**business**

i have a problem with this question my teacher gave me. i don't know what to write for the answer. the problem: there is a girl named Jane who is hired as the head of the payroll department at R& S Electronic company, firm of 75 employees. she is hired by Eddi the general ...
*August 22, 2011 by jack smith *

**algebra**

I need help!!! 3/2,1/2, 1/6,1/8,... I need to determine if this sequence is arithmetic, geometric, or neither, then I need to find the ninth term
*April 19, 2009 by jeffrey*

**algebra**

I need help!!! 3/2,1/2, 1/6,1/8,... I need to determine if this sequence is arithmetic, geometric, or neither, then I need to find the ninth term
*April 19, 2009 by jeffrey*

**Math**

Determine if the relationship represented in the table is linear. If it is linear, write an equation. x|-2 5 7 10 12 20 y| 3 0 2 5 7 15 My answer is: Linear; y=x+ -5 Is this correct? Thanks.
*September 20, 2009 by B.B.*

**geometry**

a taxicab charges $1.45 for the first 1/5 mile and 25 cents for each additional 1/5 mile... determine the cost of a 12 mile trip!!
*August 30, 2011 by Anonymous*

**Chem19**

Determine ΔSuniv in J/K at a temperature of 272 K given ΔHrxn = 77 kJ and ΔSrxn = 162 J/K.
*May 2, 2011 by Ryan*

**chemistry**

For a week acid whose ionization constant is 1.75 x 10(-5), the pH of its solution is 3.0. Determine its degree of ionization and its percent ionization.
*October 13, 2011 by chris*

**Calculus**

Determine the equation of the line through the origin and the point P(10,3) a) r=s(10,3), seR b) x=3t, y=10t, teR c) r=s(-3,10), seR d) r=s(3,10), seR
*April 14, 2012 by Antia*

**chem**

Calculate the pH of each and determine whether each of the following solutions is acidec or basic. a) [H^+]=1.0 e-11M solution b) [OH^-]=1.5 e-3M solution c) [H^+]=5.2 e -5M solution
*November 29, 2012 by Bea Alonzo*

**Math**

The third term of a geometric series is 24 and the fourth term is 36. Determine the first term and common ratio.
*July 18, 2013 by Tom*

**physics**

When the net force that acts on a hockey puck is 12 N, the puck accelerates at a rate of 48 m/s2. Determine the mass of the puck.
*December 12, 2013 by john*

**Chemistry**

(NH4)2S is a strong electrolyte. Determine the concentration of each of the individual ions in a 0.200 M (NH4)2S solution. [NH4] = M [S] = M
*April 3, 2014 by Natalie*

**Chemistry**

If you mix 20.0mL of a 3.0M solution with 30mL of a 5.00M solution, determine the concentration in molarity of the new solution.
*April 16, 2015 by Chris*

**Chemistry**

Please help me with these problems, the book examples very different. I'm really confused. Any help with these will help me immensely. Thank you in advance! What I got were: 1.)c 2.)d 3.)a 4.)c 5.)b 1.) When is any endothermic reaction spontaneous? a.)When ΔSreaction >...
*November 16, 2014 by Herbert Lee*

**Math**

Determine the color, driver and mpg of each car by the information: 5 different drivers -- Cox, Durham,Gosling, Heynek and Wollinsky. Car colors-- blue, green, red, white and yellow. different mpg-- 32, 31, 30, 29 and 28 1. Durham got morempg than the green car but not as many...
*August 28, 2008 by Mary*

**Science**

Put the following in the correct order. Report results Determine if hypothesis is true Do background research Construct a hypothesis Collect data Analyze results and draw conclusions Design and implement an experiment State the problem / ask questions Correct Order State the ...
*September 17, 2014 by Please help*

**Physics**

Electrons are ejected from a surface with speeds ranging up to 6.0 x 10^5 m/s when light with a wavelength of 400 nm shines on it. a.) What is the work function of this surface? b.) What is the threshold frequency for this surface? c.) What is the deBroglie wavelength of an ...
*June 12, 2006 by Nathaniel*

**english(business writing)**

The Situation. Your company recently installed an Eazy-Air Model 77 air conditioner in the upstairs den of Mr. and Mrs. Norman E. Stocker’s home (41 Citrus Place, Sumatra, FL 32691). Installation was unusually difficult because the oak paneling in the room was old and brittle...
*August 16, 2007 by Mr. Salman*

**Algebra**

Given a line containing the points(1,4), (2,7) and (3,10) determine that slope-intercept form of the equation, provide one additional point on this line, and graph the funtion. Start by putting the first point into point-slope form: y-y1=m(x-x1), so y-4=m(x-1). Slope, or m, is...
*January 7, 2007 by delmore*

**12th grade calculus**

Let f(x)=[x^3-9x] [] --- absolute value a. does f'(x) exist? b. does f'(3) exist? c. does f'(-3) exist? d. determine all extrema of f.
*November 4, 2008 by dt*

**MATH**

Determine all the absolute extreme values for the function f(x, y) = sin x sin y sin(x + y) on the square 0 <x <PI ,0 < y < PI.
*March 26, 2010 by GRAVITY*

**calculus**

Determine all the absolute extreme values for the function f(x,y) = sin(x)*sin(y)*sin(x+y)on the square 0<x<pi, 0<y<pi
*March 28, 2010 by LOL*

**Trig **

Given that theta is a quadrant 3 angle with cos of theta=-7radical65/65, determine tan of theta
*March 10, 2011 by Mark*

**Chem20**

Determine ΔG in kJ at a temperature of 261 K given ΔHrxn = 91 kJ and ΔSrxn = 151 J/K.
*May 2, 2011 by Ryan*

**geometry**

Segment AB is a midsegment of trapezoid WXYZ, and segment ZY is parallel to segment WX. Determine WX if AB = 10 cm and ZY = 7 cm. Justify your answer.
*July 26, 2012 by victoria*