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August 30, 2014

Posts by Bob


Total # Posts: 2,372

math
3p^2+4P^2=63
January 23, 2011

Math
The distance between the points (14,-18) and (15,-8) is? The point (a,b) is such that (14,-18) is the midpoint of the segment from (15,-8) to (a,b). Then a and =?
January 23, 2011

chemistry
Nevermind, the correct answer was at the top of the next page so I didn't see it.
January 21, 2011

chemistry
Nope, it was 10 degrees C, which is why I'm stumped. I didn't think any of the answer choices were right, either.
January 21, 2011

chemistry
Which of the following constants are needed to calculate the change in enthalpy (H) for heating a sample of liquid water at 10C to steam at 150C. I) the heat capacity of water II) the enthalpy of fusion of water III) the heat capacity of ice IV) the enthalpy of ...
January 21, 2011

chemistry
thanks
January 21, 2011

chemistry
I think that's what I'm looking for.
January 21, 2011

chemistry
I, IV and V only 005 10.0 points When a chemical reaction comes to equilibrium, both the forward and the reverse reactions continue, but their rates are equal. For such a system at equilibrium at 300 K and 1.00 atm pressure, the change in Gibbs free energy as the forward ...
January 21, 2011

math
if a triangle has side lengths of 6cm, 9cm and x cm, what are possible values for x?
January 20, 2011

physics
I'm sorry I meant 1.5J
January 18, 2011

physics
The answer is 15J
January 18, 2011

MATH
A is the midpoint of BC. BA=2x+5 and BC=5x-3. solve for x and find the length of BC
January 16, 2011

physics
20
January 16, 2011

honors chemistry
no, that is what i meant to type, that's just the question on my homework
January 13, 2011

honors chemistry
Which gas has solubility in water (at STP) of 3.39 L at 10.0°C?
January 13, 2011

9th grade alegbra
The sum of two numbers is 90.their difference is 18.find the numbers.
January 11, 2011

science
if earth is one astronomical unit from the sun and has a period of 1 year, approximately how far is planet X form the sun if it has a period of 26 yearS
January 11, 2011

math
Dents and Dings Auto Body buys paint with a list price of $29,000. If the supplier extends trade discounts of 30/35/20, what is the trade discount amount?
January 9, 2011

chemistry
In one mole of the compound nitrogen diox- ide, what fraction of the total number of ions is the nitrogen ion?
January 9, 2011

Math
write a formula that gives you the number of regions formed when x points are placed on a circle and all possible chords are drawn. ex. 2pts has 2 regions, 3pts has 4 regions, 5pts has 17 regions
January 7, 2011

math
??????
January 5, 2011

Physics
A 10 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 86 N parallel to the incline, which makes an angle of 30 ° with the horizontal. Assuming the coefficient of kinetic friction is 0.4 and the crate is pulled a distance of 7.5 ...
January 5, 2011

trig
what is the value of the discriminant x^2-9
January 5, 2011

Physics 12th Grade
Two girls with masses of 50.0 kg and 70.0 kg are at rest on frictionless in-line skates. the larger girl pushes the smaller girl so that the latter rolls away at a speed of 10.0 m/s. What is the effect of the action on the larger girl? What is the impulse that each girl exerts...
January 5, 2011

chemistry
A solution of ethanol (C2H5OH) in water is prepared by dissolving 87.4 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?
January 3, 2011

Geometry
Find the surface area of a right octagonal pyramid with height 2.5 yards, and its base has apothem length 1.5 yards.
December 30, 2010

Physics
990 N
December 29, 2010

GENERAL ART
HOW DO YOU DRAW 3 D BOXES
December 21, 2010

7th Pre-Algebra Word Problem
Thanks
December 20, 2010

7th Pre-Algebra Word Problem
Approximately one-seventh of the people in the United States are left-handed. The population of the United States is about 300 million. Write and solve an equation to estimate howmany people in the United States are left handed.
December 20, 2010

Physics
Two brothers are jogging, Josh and Drake. Josh has 1/2 the KE of Drake. Also, he is twice the mass of Drake. Plus, Josh had to increase his speed by 1.35 meters/second to achieve the same kinetic energy of Drake. What is the initial velocity?
December 18, 2010

Math
prove that two triangles are congruent if they have 2 equal adjacent angles and the side inbetween them is also the same.
December 17, 2010

math
find three rational numbers between the negtive square root of 26 and the negtive square root of 15 and explain how you got the answer
December 17, 2010

Math
prove that two triangles are congruent if they have 2 equal adjacent angles and the side inbetween them is also the same.
December 16, 2010

math
Find the range of possible measures if each set of expressions represents measures of the sides of a triangle:x 2x+10, x+8
December 16, 2010

Language arts
Figurative language
December 15, 2010

geometry
Write and solve an inequality to find the calues of x for which the area of the rectangle is greater than the are of the triangle
December 15, 2010

11th grade
20xsquared+40 x+15=0
December 13, 2010

algebra
Thanks
December 13, 2010

algebra
10-d=19 What is d? I think it is -9.
December 13, 2010

math
how do you solove I=$440 P=??? R=7% T=4 years
December 9, 2010

7th grade
i need help with another I=$440,P=??,R=5%,T=4 years what is p
December 9, 2010

7th grade
thank you
December 9, 2010

7th grade
I=$440 P??? R=7% T=4years this is simple interest
December 9, 2010

7th grade
i need help with simple interest math homework.NOW!
December 9, 2010

History
dont go down really dont go i mean it
December 9, 2010

Finance
The extent to which inventory financing may be used depends on
December 9, 2010

finance
At age 5, how much would you have to save per month to have $1 million in your account at age 65, if your investment rate was 10% per year? Assume no taxes and compounding on a monthly basis.
December 9, 2010

trig
solving radical equations... help! 5+¡în+1= n+4
December 8, 2010

Honors Biology - URGENT!!!
idk
December 8, 2010

Math
12 Quarters 7 Dimes 3 Nickels
December 7, 2010

Math
12 quarters 7 dimes 3 nickels
December 7, 2010

Math question
pi*r^2 3.14*20cm.^2 =1256.63 take that and divide by four and you get 314.16
December 7, 2010

physics
I have a capacitance of 5.75e-10 What is it in Farads?
December 7, 2010

pre algebra 6th grade
250=x-.08x 250=(1-.08)x 250/(1-.08)=x 271.73=x
December 7, 2010

algebra
x=4 y=2 perimeter= (2*4)+(2*2) = 8+4 =12
December 7, 2010

Physics
I need help solving for q. Here is the formula. F=(k*q*2q)/r^2
December 7, 2010

Geometry
h=(2A)/B =(2*6.75)/3 =4.5 m
December 7, 2010

bio 102
assuming the standard values for the atmospheric partial pressure of N2, O2, AND CO2 at sea level, what is the approximate total partial pressure of the remainig atmospheric gases?
December 7, 2010

Chemistry
0.500 moles of NOCl is placed in a 1.00L vessel at 700K,and after the system comes to equilibrium,the concentration of the NOCl is .440M. Calculate the value of Kc for the reaction @NOCl(g)->2NO(g)+Cl2(g)?
December 6, 2010

math
what is the ascending order of 8+7x^2-12x^3-4x^3y
December 6, 2010

chemistry
What is the formula for the compound formed when potassium reacts with nitrogen?
December 6, 2010

science
A 75-kg person on skis is going down a hill sloped at 30.0°. The coefficient of kinetic friction between the skis and the snow is 0.15. How fast is the skier going 10.0 s after starting from rest?
December 5, 2010

algebra
A*B=A*B Solve for B
December 5, 2010

physics
A 65 kg person runs with a horizontal velocity of 3.5 m/s and jumps onto an 0.9 kg skateboard which is initially at rest. Assuming negligible friction, what will be the final velocity of the skateboard and the person?
December 3, 2010

physics
An 85.0 kg fisherman decides to jump from his boat onto the dock. If the velocity of the fisherman is 4.30 m/s to the west and the boat is 185 kg, what is the velocity of the boat after the fisherman jumps out?
December 3, 2010

physics
A billiard ball traveling at 8.0 m/s has an elastic collision with a second billiard ball of equal mass that is at rest. After the collision, the first ball is at rest. What is the velocity of the second ball after the collision?
December 3, 2010

physics
a chunk of clay in the shape of Bugs Bunny has a mass of 0.75 and an initial velocity of 5.0 m/s to the right. a second chunk of clay is in the shape of Elmer Fudd has a mass of 0.25 kg and an initial velocity of 3.0 m/s to the left. what is the composite velocity ater the ...
December 3, 2010

Math- HELP
12/17 duh!
December 2, 2010

chemistry
Imagine that one carbon in buckminster- fullerene (C60) is replaced by a silicon atom,yielding SiC59. This molecule can then orient in 60 different ways. What is the entropy of one mole of SiC59 at T = 0 K? 1. 4.53 × 10−20 J/K 2. 27.3 kJ/K 3. 34.0 J/K 4. 5.65 &...
November 30, 2010

Biomechanics
If an average net force of 20N at 45* is applied to a 0.35 kg water balloon for 0.12s. how far away should the catcher stand? Assume release height and cathc height are the same and air resistance is not a factor.
November 29, 2010

chemistry
Thank you!!
November 26, 2010

chemistry
I have found a balanced redox equation for removal of silver sulfide using sodium hydrogen carbonate in aluminium to say: 2Al + 3Ag2S + 6H2O --> 6Ag + 2Al2(OH)3 + 3H2S What happens to the Na and C component of the sodium hydrogen carbonate? And why is it not included on LHS...
November 26, 2010

social studies
hi
November 26, 2010

JAVA SCRIPT
What is the purpose of the modulus operator? Provide an example of when it can be used and the value that would be returned.
November 26, 2010

ethics
ok thank u so much!! :)
November 22, 2010

ethics
so what is a example?
November 22, 2010

ethics
Does your organization address ethical issues in a formal and systematic way? If so, is it a cookie-cutter, one-size-fits-all approach or has the organization customized an ethical culture to match its unique needs? Please provide examples. i dont have a job so how can do this?
November 22, 2010

English
Skeptics argued that the boss's UNORTHODOX management style would... im not sure how to! I know that unorthodox means disregarding or defying traditions or standards
November 21, 2010

English
Ske[tics argued that the noss's UNORTHODOX management style would...
November 21, 2010

English
With the election so near, the mayor became RETICENT about..... what could i write to finish the sentence?
November 21, 2010

English
1. to suppress with threat or force 2. to declare invalid
November 21, 2010

English
If the king fails to QUASH the rebel forces, they will... what could i write to finish the sentence?
November 21, 2010

English
incorrigible?
November 21, 2010

English
Thought to be _______, the criminal was sentenced to life without parole. 1.blasphemous 2.heretic 3.incorrigible
November 21, 2010

Math
Are the following fractions equivalent? justify your answer 18/24 9/12 15/20 6/9
November 21, 2010

physics
a 60 kilogram student sitting on a hardwood floor accelerates at 1.3 meters per second squared when pulled by a 240 newton horizontal force. what is the coefficient of friction between the student and the floor?
November 21, 2010

COLLEGE
yes under the cupboard
November 21, 2010

12th Grade English
wow poetry in motion
November 21, 2010

Chemistry
1e-7
November 20, 2010

calculus
Coroners estimate time of death using the rule of thumb that a body cools about 2 degrees F during the first hour after death and about 1 degree F for each additional hour. Assuming an air temperature of 78 degrees F and a living body temperature of 98.6 degrees F, the ...
November 18, 2010

C programming
Help would be grately apreciated on this problem thank you! Backgound The employees can be any one of the two types: 1) Full-Time Salaried (FTS) and 2) Part-Time Hourly (PTH). Currently, there are totally 1050 FTS employees and 274 PTH employees in a company. The company plans...
November 18, 2010

Computers C
Backgound The employees can be any one of the two types: 1) Full-Time Salaried (FTS) and 2) Part-Time Hourly (PTH). Currently, there are totally 1050 FTS employees and 274 PTH employees in a company. The company plans to add up to 50 new employees FTS employees are paid in a ...
November 18, 2010

calculus
f(x,y)=x^2+2y^2 use the gradient vector Þf(5, 1) to find the tangent line to the level curve f(x, y) = 27 at the point (5, 1). answer choices: 1. 10x + 4y = 27 2. 2x + 4y = 27 3. 5x + 2y = 27 4. 10x − 4y = 27 5. 5x − 2y = 27
November 17, 2010

calculus
Use differentials to estimate the amount of tin in a closed tin can with diameter 6 cm and height 14 cm if the tin is 0.046 cm thick.
November 17, 2010

arithmetic
dude why do you put su hard question on here and nobody can do it
November 17, 2010

geometry
draw an acute scalene triangle ABC in the center of your paper with sides approximately 8cm 10cm and 16cm
November 17, 2010

Math
5 mins.
November 16, 2010

4th grade math
31 X 19 in expanded algorithm
November 16, 2010

chem
let's say that an average egg has a mass of 48 g. What mass would a mole of eggs have?
November 16, 2010

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