Sunday
November 23, 2014

Posts by josh


Total # Posts: 1,529

science
Name the substance that makes bones flexible
November 19, 2014

math
An art teacher has 1 1/2 pounds of red clay and 3/4 pound yellow clay together. Each student in the class. How many students can get enough clay to finish the project.
November 18, 2014

chemistry
1. The combustion of acetylene is: 2 C2H2 + 5 O2  4 CO2 + 2 H2O ΔHo = -2511 kJ 11a. (5 pts) How much heat is produced if 85 g C2H2 is combusted with excess O2?
November 18, 2014

math fractions
Brent divided 3 1/5 by a number and got 4 1/2. What number did he divide by?
November 15, 2014

Math Calc
Let theta be an angle in the first quadrant, and suppose sin theta equals a. Evaluate sin(180 degrees + theta) in terms of a sin(180 degrees + theta) =
October 24, 2014

Physics
A camera falls from a blimp that is 744 m above the ground and rising at a speed of 15.5 m/s. Find the maximum height reached by the camera with respect to the ground. The acceleration of gravity is 9.8 m/s^2. Answer in units of m. PLEASE HELP SOON
October 23, 2014

Math
A glass of skim milk supplies 0.1 mg of iron and 8.2 g of protein. A quarter pound of lean red meat provides 3.75 mg of iron and 21 g of protein. If a person on a special diet is to have 7.36 mg of iron and 73 g of protein, how many glasses of skim milk and how many quarter-...
October 18, 2014

Math
Thanks Damon!
October 18, 2014

Physics
A charge of +2uC is placed at one end of a meter stick, a charge of -2uC is placed at the other end. Calculate the electric field strength at the 50 cm mark
October 17, 2014

Math
Thank You Steve
October 16, 2014

Math
Would this phrase the quotient of 2 and the sum of a number and 5 be expressed as (4 / 2) + (x + 5)? Any help would be appreciated. Thank You
October 16, 2014

Chemistry
Should add that this is the question as well, sorry: "Calculate the absorbances and using this and the measured molar absorptivity, predict the concentrations of iron(III) and therefore volumes of the 30 mg L–1 iron(III) standard solution required to make your ...
October 14, 2014

Chemistry
And then how do I get (3)? Is it a matter of going c = 3.11; where 0.15 mg in 50mL -> 0.15/50 = 0.003 = 3ppm. So 3.11mg/50mL = 0.0622 = 62.2 ppm?
October 14, 2014

Chemistry
I.e. Say for 20% T: A = - log (%T/100) = - log (20/100) =0.69897 = 0.699 Then using c = A/bc: c = 0.699/(0.225 x 1) = 3.11 Does that mean the amount for (2) is 3.11 mg L^-1?
October 14, 2014

Chemistry
Hi was looking to get some help with an experiment. Currently I trying to determine the amount iron in cereal. And was hoping to get some help with one of the questions I have been given. First off I am the recorded absorbance across the region 470 – 490 nm for the 3.00 ...
October 14, 2014

Math
Thank You Reiny
October 13, 2014

Math
If point A is located at (9, -2), which of the following points would be located 9 units away from point A? A. (9,-7) B. (1,-2) C. (9,-11) D. (9,-9) I believe this would be C (9,-11) would I be right? Thanks for the help.
October 13, 2014

Spanish Work Check
Can someone check my work and tell me if they're grammatically correct and such? Instructions: Be creative and write a sentence for each of the following verbs using the future simple tense. 1.(ella) Venir Ella vendrá mañana a mi casa. 2. (nosotros) limpiar ...
October 13, 2014

statistics
if you lose 10% a year, how much will be left of 2.44 million in 26 years?
October 9, 2014

Separation of Racemate
You have the racemate of a material. This material has an acid group as part of its structure. You also have a chiral base available. Design an experiment to separate the racemate into pure enantiomers. I have no ideas about this experiment and I need some ideas to start off. ...
October 8, 2014

Chem Help Please!
I only need help with the second question. Thanks!
October 8, 2014

Chem Help Please!
A material has an optical purity of 50%. How much of each of the enantiomers is present. The R enantiomer of a material has rotation of +35. what is the rotation of the S enantiomers.
October 8, 2014

Chemistry
A hot air balloon is filled with 1.23 × 106 L of an ideal gas on a cool morning (11 °C). The air is heated to 121 °C. What is the volume of the air in the balloon after it is heated? Assume that none of the gas escapes from the balloon.
October 7, 2014

Chem Help Please!
A + B ---> C + D ---> F + D
October 5, 2014

Chem Help Please!
You are carrying out a chemical process according to the equation below. If product C, which is the desired product can decompose to product F, how might you ensure that you stopped the reaction at the optimum point to ensure the maximum yield of C. Thanks!
October 5, 2014

Math
Is the answer 15 and 3/4?
October 1, 2014

Math
I added them because I wanted to figure out the total yardage. Just a guess on my part, I was wrong??? I am confused can you show me how I should have done it? Shoud I have subtracted?
October 1, 2014

Math
To try and figure out what he total yardage might have been
October 1, 2014

Math
Over 10 plays, a football team gained 63 yards. On 4 of the plays the team gained 0 yards, on 1 play the team lost 3 yards and on 1 play the team lost 6 yards. What was the team's mean gain, in yards, per play for the remaining plays. I did 63 plus 9 equals 72 divided by 4...
October 1, 2014

Math
THANK YOU SOOOOO MUCH MS. SUE YOU ARE THE BEST!!!!!!
October 1, 2014

Math
Can some people answer the math questions that were asked. I see none of them being answered. I just need someone to help me understand.
October 1, 2014

Math
Over 10 plays, a football team gained 63 yards. On 4 of the plays the team gained 0 yards, on 1 play the team lost 3 yards and on 1 play the team lost 6 yards. What was the team's mean gain, in yards, per play for the remaining plays? Could somebody PLEASE HELP ME! It'...
October 1, 2014

Math
Over 10 plays, a football team gained 63 yards. On 4 of the plays the team gained 0 yards, on 1 play the team lost 3 yards and on 1 play the team lost 6 yards. What was the team's mean gain, in yards, per play for the remaining plays?
October 1, 2014

Math (Trig)
Rewrite the following expression in terms of tan3x: (sin2x + sin4x)/(cos2x + cos4x)
September 29, 2014

Chemistry
Anyone know how to go about the problem? I don't know how to do it. Assume a professor has a daily special request for her coffee. She likes to have the 250.0 mL of coffee frozen at -15.0°C overnight and then wants it heated to 95°C when she gets there in the ...
September 25, 2014

physics
A car has a mass of 1500 kg. If the driver applies the brakes while on a gravel road, the maximum friction force that the tires can provide without skidding is about 7000 N. If the car is moving at 18 m/s, what is the shortest distance in which the car can stop safely?
September 22, 2014

Physics
As two boats approach the marina, the velocity of boat 1 relative to boat 2 is 2.20m/s in a direction 47.0 ∘ East of North. If boat 1 has a velocity that is 0.745m/s due North, what is the(magnitude and direction) of boat 2?
September 21, 2014

calculus
Q: Suppose that for all xE(0,5), f(x) is between 1+x and 3+sin((pi)(x)). Find lim x->2 f(x). Is this question related to the intermediate value theorem? It is confusing me, can anyone help out? I am not certain of what xE(0,5) is defining, is that a set of x values or am I ...
September 21, 2014

Math
Evaluate the function and simplify: f(x)=4x^2+3x-3; f(x-1)
September 19, 2014

Math Help
Evaluate the function and simplify: f(x)=4x^2+3x-3; f(x-1)
September 19, 2014

Maths
The school cafeteria serves tacos every sixth day and cheeseburgers every eight day. If tacos and cheeseburgers are served on the same day, how many days will it be before they are both on the menu again.
September 17, 2014

Chemistry Urgent Help Please!
Give two means other than crystallization from a solvent that may be used to purify an organic solid. Explain Pleaseeeee!!!!!!!!!!!!!
September 16, 2014

Chem Extraction of Caffeine from Tea
When doing your extraction you were asked to vent your extraction funnel occasionally during the extraction. Why? You were instructed not to shake the extraction layers too vigorously. Why? What type of compound could cause the layers not to separate cleanly? Thanks!
September 16, 2014

Physics Help
An airport tram carries passengers between two terminal buildings 500 m apart. The tram starts from rest and accelerations at 1.5 m/s^2 for 20 m. It then travels at a constant velocity for 450 m. Finally, it slows down for 30 m at an acceleration of 1 m/s^2 and comes to rest. ...
September 15, 2014

Physics
An airport tram carries passengers between two terminal buildings 500 m apart. The tram starts from rest and accelerations at 1.5 m/s^2 for 20 m. It then travels at a constant velocity for 450 m. Finally, it slows down for 30 m at an acceleration of 1 m/s^2 and comes to rest. ...
September 14, 2014

Math
Find how much interest $25,000 earns in 4 years in a certificate of deposit paying 8.5% interest compounded quarterly.
September 13, 2014

chemistry
suggest an alternative indicator for the standardization reaction. Explain the rationale behind your choice.
September 13, 2014

chm
how does CO2 affect the titer of a solution of NaOH ?
September 13, 2014

Math
Is the answer sixty?
September 12, 2014

Math
Matt made two types of pie: strawberry and blueberry. He cut all of the strawberry pies into 20 slices each and all of the blueberry pies into 15 slices each. If Matt cut the same total number of slices of each type of pie, what is the minimum number of slices of each type he ...
September 12, 2014

Physics
A ball is dropped from a roof of a building and strikes the ground in 3 seconds. If a second ball is thrown horizontally from the roof, it will hit the ground in:
September 11, 2014

math
Jack has $55.00 that's ten more than 1/3 of what Jill has how much does Jill have
September 10, 2014

Math
The density, d, of an object is given by the following formula, where m represents the mass of the object and V represents the volume of the object. Heather was asked to find the density of a brick given the mass in kilograms and the dimensions of the brick in meters. She ...
September 8, 2014

ANALYTICAL CHM
Describe the correct technique for reading the meniscus of a solution in the buret.
September 6, 2014

math
a square photo display is made up of 60 rows of 60 photos each. the area of each square photo is 4 square inches. how long is each side of the display board?
September 4, 2014

Algebra 2. HELP
Thankyou Mr.Damon :D
September 2, 2014

Algebra 2. HELP
Furniture Assembly: At the beginning of your 8 hour shift, there were 42 units of furniture that needed assembled. The number of units N that still need to be assembled during your shift can be modeled by n(t)=-3t +42 where t is the time in hours... 1. Graph the model 2. What ...
September 2, 2014

algebra
a cannon is 80 feet long. the muzzle velocity = 960 ft / sec. if fired strait up, what is the maximum height
September 1, 2014

memphis school
Two boats leave a dock at the same time, one goes eastward at 10miles per hour and the other goes north at 24miles per hour how miles apart are both boats after 3hours
August 27, 2014

Precal
How do I calculate a and b?
August 23, 2014

Precal
The number cis 75 + cis 83 + cis91 +...+ cis 147 is expressed in the form r cis(theta), where 0 <= theta < 360. Find theta in degrees. @Damon I didn't understand your reply to my post. Could you please explain it to me?
August 23, 2014

Pre-cal
nvm its 111
August 23, 2014

Pre-cal
I got 291 degrees. is that correct?
August 23, 2014

Pre-cal
How do I calculate a and b?
August 23, 2014

Pre-cal
I don't understand?
August 23, 2014

Pre-cal
The number cis 75 + cis 83 + cis91 +...+ cis 147 is expressed in the form r cis(theta), where 0 <= theta < 360. Find theta in degrees. I need help.
August 23, 2014

Physics
A 25 kg box is along a horizontal floor and a force of 400 N pushes the box with an angle of 50 deg with the horizontal. Starting from rest, the box achieves a velocity of 2 m/s in a time of 4 seconds. Find the coefficient of sliding friction between box and the floor.
August 22, 2014

Physics
A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity?
August 22, 2014

Physics
A body A of a mass 0.16 kg exerts a force of 6.2x10^-10 N on a body B when the distance between their centers is 0.37 meters. What is the mass of body B?
August 22, 2014

Philippine history
Anyone here please give me the possible questions that can threw up to me about Filipinization of Government. Please. Thank you.
August 20, 2014

Physics
Still physics. It has a figure shown here. Can't show u the picture. But its like, theres a box and another box suspended by a cord on either sides of a pulley creating 30 deg and 50 deg.
August 19, 2014

Physics
Okay then. Maybe it's a typo. I'll ask my teacher about this tom :) uhmm anyway, how can you get the acceleration of the two boxes and tension in the cord if you just have 53 degrees and 30 degrees?
August 19, 2014

Physics
Hi Damon. Thank you. It is written on my book, it's really 15 seconds.
August 19, 2014

Physics
A 50 kg box rests on a smooth frictionless table. Connected to the box is a light string passing through a pulley at the end of the table. Suspended on rhe other end of the string is a 20 kg box. Find a) acceleration of the system, b) the tension in the string c) the ...
August 19, 2014

Precal
Prove algebraically that |w+z|<=|w|+|z| for any complex numbers w and z.
August 16, 2014

Physics
In a binary star system in which 2 stars orbit each other about their centre of mass, the mass of one star is 20m while the other star is m. In another binary star system, the masses of the star are 14m and m. The fixed distance between the stars in the both cases are the same...
July 7, 2014

statistics
The inside diameter of metal washers produced by a company are normally distributed with a mean of .5 inches and a standdrd deviation of .01 inches. Of all washers produced .8% of the washers are rejected because they are too small for a bolt used to test them. What is the ...
June 28, 2014

Math
The digit sum for 126 is 1+2+6, or 9. The digit sum for 300 is 3+0+0, 0r 3. Find the two consecutive numbers that have digit sums of 36 and 1 Please help - Thank You
June 27, 2014

math
Matt is working for 75 points. If he answered 16 of 31 questions correctly, how many of the 75 points did he earn?
June 24, 2014

physics
The cricketer in the previous question hit the ball off the bat with a velocity of 25 m/s at an angle of 38° above the horizontal. If the boundary is 60 m away, work out whether the ball clears the boundary without bouncing or not. help please!
June 23, 2014

physics
A 78 kg volleyball player jumps and leaves the ground with a vertical velocity of 3.5 m/s. By thinking about the conservation of energy in a freefalling object, work out how high their centre of mass would reach at the top of their jump and present your answer to the nearest ...
June 23, 2014

Columbus State
CO(g) + 2H2(g) ↔ CH3OH(g) Kc=14.5 (500K) a. In which direction will the reaction proceed if the reaction vessel contains 0.500 atm CO, 0.500 atm H2, and 0.500 atm CH3OH? Show your calculations for full credit. Remember that Q and K both have to be calculated with either ...
June 22, 2014

Mircoeconomics
Is it true that monopolies do not exist in our economy? Please explain
June 21, 2014

Intro to Algebra
The cost for paint to cover the exterior of the four sides of a shed was $40. A can of paint costs $10 and will cover 33 square feet. The shed consists of four sides, each shaped like a trapezoid. They each have one base of 5 feet and one base of 6 feet. What is the altitude ...
June 12, 2014

English
Thank You
June 9, 2014

English
In the following sentence the word alternate is used as a verb or adjective? There must be an alternate solution to this problem. Thank You
June 9, 2014

math
fifteen less than four times seven
June 2, 2014

math
If I make 600$ every 14 seconds, how long would it take me to get 1,000,000$?
May 31, 2014

Maths
Question: total of 40 students in class, boys number is double of the girls number. How many boys & girls in the class? Working as follow: a = boy b = girl 2a + b = 40 2a + 2a = 40 4a =40 a =10 b=2a b = 2x 10 b = 20 So a=10, b= 20. Total only 30, not 40 . Why? Thanks
May 22, 2014

Maths
Question: total of 40 students in class, boys number is double of the girls number. How many boys & girls in the class? Working as follow: a = boy b = girl 2a + b = 40 2a + 2a = 40 4a =40 a =10 b=2a b = 2x 10 b = 20 So a=10, b= 20. Total only 30, not 40 . Why? Thanks
May 21, 2014

Physics Please help4
Two 1.50cm -diameter disks spaced 1.80mm apart form a parallel-plate capacitor. The electric field between the disks is 5.10×10^5 V/m I got the voltage as =918 but B. How much charge is on each disk? _________C? and C. An electron is launched from the negative plate. It ...
May 21, 2014

Physics Please help3
A point charge with charge q1 = 3.10μC is held stationary at the origin. A second point charge with charge q2 = -4.60μC moves from the point ( 0.160m , 0) to the point ( 0.270m , 0.255m ). How much work W is done by the electric force on the moving point charge? ...
May 21, 2014

Physics Please help2
Two small insulating spheres with radius 7.00×10^−2m are separated by a large center-to-center distance of 0.565m . One sphere is negatively charged, with net charge -2.05μC , and the other sphere is positively charged, with net charge 4.10μC . The charge...
May 21, 2014

Physics Please help
A thin, horizontal 20cm×20cm copper plate is charged with 1.7×10^10 electrons. Consider the electrons are uniformly distributed on the surface. A. What is the strength of the electric field 0.1 mm above the center of the top surface of the plate? E=____ N/C B. What...
May 21, 2014

Math
This seems like it would be a simple math problem but...... How do you create an equation and calculate the difference between 2 birthdays, putting the older person's on top? 5/17/1987 and 10/28/2002 PLEASE HELP ME!
May 20, 2014

Math
This seems like it would be a simple math problem but...... How do you create an equation and calculate the difference between 2 birthdays, putting the older person's on top? 5/17/1987 and 10/28/2002 PLEASE HELP ME! hank You
May 20, 2014

Math
Ms. Sue are you there? You have helped me so much in the past could you please help me with this? Thank You
May 20, 2014

Math
This seems like it would be a simple math problem but...... How do you create an equation and calculate the difference between 2 birthdays, putting the older person's on top? 5/17/1987 and 10/28/2002
May 20, 2014

Physics
How to solve? 2. A 70.0 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 10.0 m) and spun at a constant angular velocity of 16.3 rpm. Answer the following: a. What is the angular velocity of the centrifuge in ...
May 20, 2014

Math Question
What is the 50th term of the sequence that begins -6,0,6,12? 292 288 286 290
May 19, 2014

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