Tuesday
October 21, 2014

Posts by Bob


Total # Posts: 2,432

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

chemistry
Surface tension explains which of the follow- ing phenomena? I) A piece of aluminum foil floating on a lake II) A bowling ball sinking more slowly through molasses than through water III) Separating ethanol from water by distillation IV) Water beading on a windshield during ...
November 14, 2010

math; distributive property;perimeter of a triangl
4+4+3h+2
November 14, 2010

Physics
you use the mg-(2.3E2*cos21)for fnormal...bobpursley you really should check your work before...
November 13, 2010

economics
drop in output
November 11, 2010

geomtry
Figure it out
November 11, 2010

physics
How much spring elasticity would be needed to make a 50 pound child jump higher
November 10, 2010

Physics
17.4
November 10, 2010

physics
A bus traveling 85 km/hr is brought to a stop in 135 m. If the mass of the bus is 2250 kg, what was the retarding force provided by the brakes? Formula please
November 9, 2010

Algebra
Thank you
November 8, 2010

Algebra
why 32?
November 8, 2010

Algebra
4a/16 + a/16 =?
November 8, 2010

1st grade
the girls past was bad
November 8, 2010

physics
A man pushes on a piano of mass 180 so that it slides at a constant velocity of 12.0 down a ramp that is inclined at 11.0 above the horizontal. No appreciable friction is acting on the piano. Calculate the magnitude and direction of this push A. if the man pushes parallel to ...
November 8, 2010

chemistry
A propane barbeque is used to heat up 400g of water in an aluminum pot until it is boiling. Using the following information, calculate the molar enthalpy of propane. You can assume the temperature of the water and the temperature of the aluminum pot are always the same. ...
November 7, 2010

chemistry
A 10.0 g sample of liquid gallium metal, at its melting point, is added to 50.0g of water. The initital temperature of the water is 24.0 degrees C. If the molar enthalpy of freezing gallium is -5.54 kj/mol, what is the final temperature of the water? Thanks
November 7, 2010

PHILOSOPHY
What was William of Ockham's position on predestination? Where is a good sight to find imformation on this subject?
November 7, 2010

math
What are the measures of the angles of a right triangle with side lengths of 1, 2, and sqroot of 2? please show/explain work
November 7, 2010

MATH
a ball of radius 1 is dropped into a V-shaped gutter. The ball touches the gutter's sides at the ball's equator. If the shortest distance from the surface of the ball to the vertex of teh gutter is 1, what is the angle formed by the sides of the gutter?
November 7, 2010

math
a ball of radius 1 is dropped into a V-shaped gutter. The ball touches the gutter's sides at the ball's equator. If the shortest distance from the surface of the ball to the vertex of teh gutter is 1, what is the angle formed by the sides of the gutter?
November 7, 2010

math algebra
how would i do this problem elina and teresa raced on their bikes to the library after school. they both left at 3:00 pm and bicycled along the same trail elina rode at the speed of 12 miles an hour and teresa rode at the speed of 9 mph. elina got there 15minutes before teresa...
November 4, 2010

calculus
A rectangle is constructed with its base on the diameter of a semicircle with radius 5 cm and with two vertices on the semicircle. What are the dimensions of the rectangle with maximum area?
November 4, 2010

calculus
A square-based, box-shaped shipping crate is designed to have a volume of 16ft^3. The material used to make the base costs twice as much (per ft^2) as the material in the sides, and the material used to make the top costs half as much (per ft^2) as the material in the sides. ...
November 4, 2010

chem
A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius What volume would this occupy at 26 degrees Celsius and .95 atmospheres? can someone tell me how many...
November 2, 2010

chemisty help please
I still don't get it.. lol
November 2, 2010

chemistry
I looked at that guys and i still dont get it.
November 2, 2010

chemistry
A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius What volume would this occupy at 26 degrees Celsius and .95 atmospheres?
November 2, 2010

Algebra
Hot Java Coffee Company adverties their decaffeinated coffee as 97% caffeine free as compared to their regular caffeinated coffee. If a cup of coffee is 8 ounces, how many ounces of decaffeinated coffee would you have to drink to get the equivalent amount of caffeine found in ...
November 2, 2010

chemistry
What volume of HCl gas is produced by the reaction of 2.4 liters of H2 gas with 1.5 liters of Cl2 gas? (Volumes are at the same T and P.) 1. 3.0 liters 2. 4.8 liters 3. 0.75 liters 4. 2.4 liters 5. 1.5 liters
November 1, 2010

Word within the Word Analogy Help
how fast can you answer??
November 1, 2010

chemistry
Thanks, I thought I could use Boyle's Law, but it seemed too easy.
November 1, 2010

chemistry
Two gases are contained in gas bulbs connected by a valve. Gas A is present in a 56 L bulb at a pressure of 213 torr. Gas B exerts a pressure of 683 torr in a 74 L bulb. What is the partial pressure of gas B after they equilibrate once the valve has been opened? Answer in ...
November 1, 2010

chemistry
Calculate the number of carbon atoms in 0.75 L of acetone (CH3COCH3). (density = 1.3 g/mL and boiling point = 48.5 degrees Celsius)
October 31, 2010

chemistry
CaCN2
October 31, 2010

chemistry
Consider the following reaction: CaCN2 + 3H2O ¨ CaCO3 + 2NH3 105.0 g CaCN2 and 78.0 g H2O are reacted. Assuming 100% efficiency, which reactant is in excess and how much is leftover? The molar mass of CaCN2 is 80.11 g/mol. The molar mass of CaCO3 is 100.09 g/mol. 1. ...
October 31, 2010

poetry
Can someone explain what the poem is trying to tell in "Ode to the West Wind" I read from other sites but I don't understand it... I believe that it is talking about death...
October 29, 2010

biochemistry
wfwfrgffdgbhyujhyujb
October 29, 2010

chemistry
89.8%
October 27, 2010

physics
find the force exerted by the rope on the car when the angle is 2.9 degrees and you are pulling with a force of 384 N but the car does not move
October 27, 2010

calculus
Find parametric equations for the line through the point P(2, 9, 4) that is parallel to the plane x + y + z = 6 and perpendicular to the line x = 5 + t , y = 5 − t , z = 5t . Answer Choices: 1. x = 2 + 6t, y = 9 + 4t, z = 4 + t 2. x = 2 + t, y = a + t, z = 4 − 2t ...
October 27, 2010

calculus
Find an equation for the surface consisting of all points P(x, y, z) equidistant from the point P(0, 1, 0) and the plane x = 3. Answer Choices: 1. y2 + z2 − 6x + 2y − 8 = 0 2. x2 + z2 + 6y − 2z − 8 = 0 3. y2 + z2 + 6x − 2y − 8 = 0 4. x2 + z2...
October 27, 2010

calculus
If a is a vector parallel to the xy-plane and b is a vector parallel to k, determine |a ~ b| when |a| = 3 and |b| = 2. 1. |a ~ b| = −6 2. |a ~ b| = −3ã2 3. |a ~ b| = 3 4. |a ~ b| = 3ã2 5. |a ~ b| = 0 6...
October 27, 2010

Statistics
z = 50
October 26, 2010

physics
fail...
October 25, 2010

physics
You are given a vector in the xy plane that has a magnitude of 84.0 units and a y component of -49.0 units. Assuming the x component is known to be positive, specify the vector V which, if you add it to the original one, would give a resultant vector that is 71.0 units long ...
October 25, 2010

physics
NVM!
October 25, 2010

physics
When Mary is 22 m from the finish line, she has a speed of 4.0 m/s and is 5.0 m behind Sally, who has a speed of 5.0 m/s. Sally thinks she has an easy win and so, during the remaining portion of the race, decelerates at a constant rate of 0.51 m/s^2 to the finish line. What ...
October 25, 2010

american studies
henry hudson
October 24, 2010

Physics
If a car starts from rest and travels for 5.0 seconds with a uniform acceleration of +1.5 m/s2. The driver then applies the brakes for 3.0 seconds, causing a uniform acceleration of - 2.1 m/s2.
October 23, 2010

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