Wednesday
April 23, 2014

Posts by bob


Total # Posts: 2,360

physics
In the figure below, a box of Cheerios (mass mC = 0.8 kg) and a box of Wheaties (mass mW = 2.5 kg) are accelerated across a horizontal surface by a horizontal force applied to the Cheerios box. The magnitude of the frictional force on the Cheerios box is 2.0 N, and the magnitu...

ACCOUNTING
if a company issued $32,000,000 of 10-year, 12% bonds at an effective interest rate of 13%, receiving cash of $30,237,139 and interest on the bonds is paid semiannually how do you calculate the first semiannual interest payment and the amortization of the bond discount?

math
38 animals

AP Chemistry
I decided to set up an ICE chart but I am a little confused. This is what I did: CaCl2 + K2SO4 = CaSO4 + 2 KCl I 0.020M 0.20M 0 0 C -X -X +X +2X E 0.020-x 0.20-x 0+x 0+2x Am I right in saying this? Additional information: Ksp= (CaSO4)(KCl)^2 / (CaCl2)(K2SO4) Ksp= 2.4 x 10^ -5

AP Chemistry
100. mL of 0.020 M CaCl2(aq) is added to 200. mL of 0.20 M K2SO4(aq). Calculate the equilibrium concentrations of Ca^2+ (aq) and SO4^2-(aq)

Finance
Suppose you are considering two investments, stock A and stock B. The beta of A is 1.20, and the beta of B is 0.80. Stock A has an expected return of 12% and Treasury Bills are yielding 3%. If the two stocks are fairly prices, what's the expected return on the Market Index...

College Chemistry
If you have the molecular weight of ethanol which is 46.1 and the concentration is 4.0% w/v. What is the molarity

physics
Frank stands at the base of a building. He throws a 0.12kg rock straight up at a speed of 28m/s so that it rises to a maximum height of 12m above the top of the building and then falls straight down on the roof of the building. a) What is the height of the building? b) What is...

physics
A helicopter hovering above a forest fire dumps a large bucket of water. How far does the water fall during the third season?

physics
Does a free falling object have a velocity of zero? If it does then is it zero for the initial velocity or the final velocity?

Physics Gr.11
thanks!

science
does the pumping of a soap dispenser have anything to do with boyles law?

math/substituion method
x+3y=-6 3x+9y=6

Langusge Arts
what are the metaphors in here

Langusge Arts
what are the metaphors in here

English
buhgtuyrvwo6qtp28 qte87p2ety q2hye89ggggggggggggggggggggggggggggggggggggs7yu8oydu8yqo9syvqwhyuivy2qgeuyv7iqwugecuyl wgehjygtw tdgyhbwvg dguywbg sduyqw gt7yqwe utys ugsv asuyw vdb syyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyys7duiw68d6vw6ed

trig
8========)--------

trig
8========)--------

Chemistry
Assuming that sea water is a 3.5 wt % solution of NaCl in water, calculate its osmotic pressure at 20°C. The density of a 3.5% NaCl solution at 20°C is 1.023 g/mL.

Chemistry
How much heat is released when 75.0 g of steam at 100.0°C is cooled to ice at -15.0°C? The enthalpy of vaporization of water is 40.67 kJ/mol, the enthalpy of fusion for water is 6.01 kJ/mol, the molar heat capacity of liquid water is 75.4 J/(mol °C), and the molar ...

Chemistry
Calculate the total quantity of heat required to convert 25.0 g of liquid CCl4(l) from 25.0°C to gaseous CCl4 at 76.8°C (the normal boiling point for CCl4)? The specific heat of CCl4(l) is its heat of fusion is and its heat of vaporization is

Science
When 260. mL of 1.50 x 10-4 M hydrochloric acid is added to 125 mL of 1.75 x 10-4 M Mg(OH)2, the resulting solution will be

chemistry
We want to make 100. mL of 1.0 M NaA solution by dissolving solid NaA in water. What mass of solid NaA is needed?

9th grade geometry
take 360 divided by how many slices it was cut into for the arc of each. divide 360 by that number, multiply it by pi, than multiply it by the radius. that'll give you the area of one slice, so all you have to do now is multiply the area of one slice by 3 for all 3 slices....

math riddle algebra pizzaz
living in x aisle

geometry
i have only a measuremment for one side of a triangle need to find the other to to find area how do i do this

Calculus
How did you guys get those formulas I have the same question and I have no idea how to start it

phisics
676

chemistry
Strontium-90 has half-life of 28 years. if a 1.00-mg sample was stored for 112 years. what mass of Sr-90 would remain?

MATH
IS 8 FL OZ ONE CUP

Chemisty
7,9

Chemisty
7,9

accounting
I am attempting to study for an exam for tomorrow and cannot figure out the equity method entries up to 2006 for this problem, can someone please help! Parent Corporation owns 80% of Subsidiary Corporation’s outstanding common stock that was purchased at book...

chem lab (webwork)
the answer is NOT d!!...i just did it and got it wrong -__-

elementary math
when finding the factors for 841 what is the largest factor you would have to test?

algebra
6 over x to the 10th times x to the 17th over 15

algebra
6 over x to the 10th times x to the 17th over 51

science
The ______ of a transverse wave is the distance between 2 crests or 2 troughs.

Geography
32. Bucharest, Romania 33. Budapest, Hungary

Statistics
How do you calculate the value of z* and t* on the TI-84 and TI-89 (the number used in confidence intervals)?

Math
I know that's the first thing that comes to mind, but my teach said that it can be done. He said that the answer is $0.05, so if someone can work backwards somehow and explain to me how he arrived at that answer I would appreciate it. :)

Math
If a bottle and a stopper cost $1.10. How much does the stopper cost?

math
X= 1

reiny
Where did you get .55? I don't need the slope I don't think. This is a pretty straightforward Q, I don't need to graph it.

another word problem!
iN 1993, THE LIFE EXPECTANCY of males was 68.6 years. In 2000, it was 71.1 years. Let E represent the life expectancy in year t and t represent the number of years since 1993. The linear function E(t) that fits this data is: E(t)=_t + _ (round to the nearest tenth) Use the fun...

please help! Examples in book are different!
train A and b are traveling in the same direction on parallel tracks. Train A is traveling at 40 mph, and B is at 60 mph. Train A passes the station at 12:25 am, and train b passes the station at 12:40 am, what time will train b catch up to train A?

word problem
train A and b are traveling in the same direction on parallel tracks. Train A is traveling at 40 mph, and B is at 60 mph. Train A passes the station at 12:25 am, and train b passes the station at 12:40 am, what time will train b catch up to train A?

math
I need help! Solve by hte elimination method: 7r-9s=-12 9r+7s=96 When I do this, I get a crazy fraction, and I know the answer is a point. (r,s) But what I'm getting is ridiculous. I got -564/130=s! That has to be totally wrong!

math
how do I solve this? I know it's common math, but I cannot remember how! -4x> 1/11 I think I multiply both sides by 11, but..... I can't remember how!

math
Help! These are fractions, so bear with me: -5/8 x= -9/10 Solve with the multiplicaation principle. How do I do this? The fractions throw me off every time!!!

math substitution method
I know this! Put it in for x. So 7(28-6y) +5y=-26 use that to get y, then plug your answer for y into one of the equations to get x

math
Help! These are fractions, so bear with me: -5/8 x= -9/10 Solve with the multiplicaation principle. How do I do this? The fractions throw me off every time!!!

algebra/common math
how do I solve this? I know it's common math, but I cannot remember how! -4x> 1/11 I think I multiply both sides by 11, but..... I can't remember how!

algebra
I need help! Solve by hte elimination method: 7r-9s=-12 9r+7s=96 When I do this, I get a crazy fraction, and I know the answer is a point. (r,s) But what I'm getting is ridiculous. I got -564/130=s! That has to be totally wrong!

3rd grade
Unscramble cioponam

6th grade - English
what is the antonym for ndrvr

MATH - Can someone please help!
What is the solution of the interval notion? x less than 6 and x greater than -3

algebra
How do I solve this with the elimination method? 5x-10y=4 5x-10y=5 I need x=, and y= to get an ordered pair, but every time I mult. by a neg, everything goes away instead of just one variable! please help!

chemistry
At 300.K and 1.00 atm, assume that 25 mL of NO gas reacts with 22 mL of oxygen gas and excess water to produce nitric acid according to the following equation: O (g) H O(l) 2 HNO (g) 2 2NO(g) 3 + 2 + 2 ⎯⎯→ 3 . If all of the nitric acid produced by this reacti...

Math
What is the solution of the interval notion? x less than 6 and x greater than -3

algebra
how do I break this down? 4x-7 <-4 over 6 the 4x-7 is all over 6 (like a fraction) I thought I just multiply by 6 to get rid of the fraction?

algebra
YOU ARE RETART JEWBU

6th grade math
answear is x>54(11)+ 20 what is x,=81

chemistry
What are the probably products of... a) an aqueous solution of two ionic compounds b) a single compound c) two elements d) oxygen and a compound of carbon and hydrogen ?

Environmental Science
very helpful :)

math
How do I solve the equations using the elimination method: .3x-.2y=4 and .4x +.3y= 49/23 Normally I would multiply the decimals by 10 to make them whole numbers, but that fraction is really throwing me off. What do I multiply to eliminate that fraction? Please help!

Auditing
1. Which of the following matters would an auditor most likely consider to be a significant deficiency to be communicated to the audit committee? A. Management's failure to renegotiate unfavorable long-term purchase commitments. B. Recurring operating losses that may indic...

Business
Looks right to me

algebra 1
Itwantedtobethenightmare

Calculus
Where did you get the (L-5) and the (W-4)?

math
When a lady faints, what number do you need to bring her?

Chem
A gas at a pressure of 1 atm, a volume of 1 , and a temperature of 25 C. What would happen to the pressure if the volume were reduced to 0.5 and the temperature increased to 250 C ?

math
4N

math
4N

chemistry
Diacetyl, a substance contributing to the characteristic flavor and aroma of butter, consists of 55.8% C, 7.03% H, and 37.17% O. In the gaseous state at 100 degrees celsius and 747 torr, a 0.30 gram sample occupies a volume of 111 ml. What is the molecular formula of diacetyl?

Chemistry
A mixture of gasses at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2, is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2?

Chemistry
A gas storage tank has a volume of 350,000 when the temperature is 27 degrees celcius and the pressure is 101 kPa. what is the new volume of the tank if the temperature drops -10 degrees celcius and the pressure drops to 95 kPa? please show work.

Physics
u r wight and ask ur teacher if u are confused it is the best way...

Science
You are 100% correct...I think...

Chemistry
A gas occupies a volume of 140 mL at 35 degrees celsius and 97 kPa. What is the volume of the gas at STP?

Chemistry
A 10 gram of mass of krypton occupies 15.0 L at a pressure of 210 kPa. What is the volume of the krypton when the pressure is increased to 790 kPa?

College physIcs
"You don't seem to be willing to take step one in answering these problems yourself. " What good is just knowing a formula?

ethics 125
· Consider the following statements: (a) Asian Americans and Pacific Islanders are a model minority, and (b) Asian Americans and Pacific Islanders belong to a single “Asian American” culture. If someone said one of these statements to you, how would you explai...

4th grade math
I think Erik meant to say that Judy had 15, not 12. Then, it solves that 27+ (27-12)=42, right? My SIL just called asking us this same question...must be at the same place in the book!

Chemistry
4.76 kg

spanish
Choose the correct command form. No __________ uds.esos zapatos sucios en la casa! (llevar) A. llevan B. lleven C. lleve D. lleva

chemistry
If 2500 ml container is filled with 175 grams of argon at -48 degrees celsius, what is the pressure?

chemistry 2
Then your answer is B

chemistry 2
im confused i cant set this problem up correctly? I need a lot of help

chemistry 2
(2.0/0.5)=4

chemistry 2
(2.0/0.5)=4

chemistry 2
(2.0/0.5)=4

chemistry 2
A gas diffuses only 0.5 times as fast as an oxygen molecule at the same temperature. What is the molecular weight of the gas?

Chemistry
How do you convert from mass percentage to molality? I get 0.084 m but that is incorrect.

chemistry
how many grams of propane are in a 35L container at 40 degrees and 900 torr?

chemistry
how many grams of propane are in a 35L container at 40 degrees and 900 torr?

Math
12

Physics
a^2 + b^2 = c^2

trig
2sin(3x-3.14)-1 find the inverse form of this equation

Algebra
Can I simplify this further SQRT( 2 - SQRT(2) )

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