Thursday
October 2, 2014

Posts by joel


Total # Posts: 246

Physics
1 Angstrom = how many Coulombs?
August 29, 2014

Physics
I dont understand.
April 4, 2014

Physics
An infinitely long thin metal strip of width w=12cm carries a current of I=10A that is uniformly distributed across its cross section. What is the magnetic field at point P a distance a=3cm above the center of the strip? I have tried using the integration method but cannot get...
April 4, 2014

CHEMISTRY URGENT!!!!
An electron transition in a single H-atom from n=3 to n=2 results in the release of a single photon. What is the wavelength of this photon in nanometers? NEED ANSWER CUZ MINE ISNT WORKING
January 27, 2014

Chemistry, due soon please help
calculate the mass of 100 ppm of CO2 int the atmosphere if the atmospheres mass is 5.3x10^18 kg
December 16, 2013

key boarding and word processing
You want to include a title page for a report you're sending out. How should you format the title on this page?
December 9, 2013

Algebra 1
Tell whether each number in the list is a real number, a rational number, an irrational number, an integer, or a whole number. Then order the numbers from least to greatest. Square root of 64, -5, square root of 9, and 2
September 26, 2013

math
D is 30 feet above the ground.
September 24, 2013

math
A stunt motorcyclist makes a jump from one ramp 20 feet off the ground. The jump between ramps can be modeled by y= -1/640x^2 + 1/4x +20 where x is the horizontal distance (in feet) and y is the height above ground (in feet). I think a is 20 feet, but I don't know how to ...
September 24, 2013

math
The sum of two decimal numbers is 3.9 Their difference is 0.9,and their product is 3.6 What are the two numbers?
September 24, 2013

MATH
Give the number whose hundreds place is one-third of the greatest one-digit number, the tens place is twice the hundreds place divided by 2, and the three digits in the thousands period is the product of the digits in the units period.
June 23, 2013

PreCalc
sorry that should be theta-omega not omega-theta
May 8, 2013

PreCalc
If tan theta = 9/5 and cot omega = 9/5 Find the exact value of sin (omega-theta)
May 8, 2013

Math
The answer is integer
April 30, 2013

Principles of Management
Question 1 of 20 5.0 Points Which of the following is NOT a benefit of planning? A. Helps you check on your progress B. Helps you think ahead C. Helps you cope with uncertainty D. Helps you compare your results to a standard Reset Selection Question 2 of 20 5.0 Points XYZ ...
April 22, 2013

Chemistry
2. In a calorimeter, 40.0g water at room temperature (20.4 C) was mixed with 60.0 g of water that was initially 48.9 C. The resulting mixture reached a maximum temperature of 37.3 C. Calculate each of the following. a) The heat released by the hot water. b) The heat absorbed ...
April 16, 2013

Chemistry
In units of joules. And in units of calories?
April 9, 2013

Chemistry
If the temperature of 150.0g of water increased from 23.3C to 44.8C, how much heat was absorbed
April 9, 2013

Chem
The specific heat of zinc is 0.096 cal/(g °C). Determine the energy required to raise the temperature of 26.1 g of zinc from room temperature (20.0 °C) to 150 °C.
April 4, 2013

math (Algebra)
(c+x)squared ----------------- 2y c= -8 x= 10 y= 6
April 3, 2013

math problem
The diameter of a circle is increased by enough to increase the circumference by 20%. By what % is the area of the circle increased ? ( Hint: Try a number like t=5.)
February 17, 2013

ENG1511
He thought he could pay his school fees
February 15, 2013

math
if i have abook of 30 pages and i number each pages, how can i figure the digit number
February 12, 2013

math
60
February 12, 2013

math
if i have a book of 30 pages and i want to number each pages what will be the digit for the thirty pages
February 12, 2013

Physics
you are both retarded. its 47.2
January 23, 2013

trig
A wheelchair ramp has an angle of inclination of 10 degrees and rises to a height of 3ft. Determine the length of the ramp in feet.
January 22, 2013

BIOCHEMISTRY Practical
The concentration of the acid is o.25M
January 16, 2013

trig
Find the Opposite of the right angle where the angle is 61 degrees and the Adjacent is 10 cm.?
December 20, 2012

VERY VERY URGENT SOCIAL STUDIES!!!!
Fortunately these are common sense questions.
December 20, 2012

VERY VERY URGENT SOCIAL STUDIES!!!!
Correct sir
December 20, 2012

college trig word problem
ty
December 15, 2012

college trig word problem
A Ferris wheel has a radius of 25 feet.The wheel is rotating at two revolutions per minute.Find the linear speed, in feet per minute, of a seat on this ferris wheel.
December 15, 2012

Chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 379.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
December 14, 2012

graphing question
how do i get the slope formula of: (4,-1) and (3,-1)? Then the Point slope form:Slope=4,passes through (1,3)?
December 5, 2012

math
3 less than or equal to 4x-3 less than 19?
December 1, 2012

calculus
The Horizontal Assymptote for the graph of f(x) = (-6x3 +2x + 5)/(x3-1) is the horizontal line with equation y=___
November 13, 2012

Ratios of Similar Figures
yes
October 22, 2012

math
Line BD bisects <ABC. m<ABD=2x+22. Find m<DBC.
October 12, 2012

geometry
Write a two-column proof. Given: 7y = 8x – 14; y = 6 Prove: x = 7
October 12, 2012

Geometry
Can you tell em if this is right? If not, can you tell me what words go where? A truth value statement can be written in the form “if P, then Q.” This “if, then” statement can be true or false. The “if” part is called the hypothesis, and the “...
October 9, 2012

physics
The mass of a roller-coaster car, including its passengers, is 481 kg. Its speed at the bottom of the track in the figure below is 17 m/s. The radius of this section of the track is r1 = 26 m. Find the force that a seat in the roller-coaster car exerts on a 45-kg passenger at ...
October 6, 2012

Critical Thinking/Ethics
Online Poll
September 28, 2012

Pre-Ap Physics
1
September 21, 2012

CHEMISTRY HELP ASAP!
is it possible for one molecule of salicylic acid to form an ester with a second molecule of the same substance? Use equations and/or structures. Please help, i am pretty sure it couldn't because of steric hindrance, however i am not sure how to explain this further and ...
September 11, 2012

chemistry (need asap!)
is it possible for one molecule of salicylic acid to form an ester with a second molecule of the same substance? Use equations and/or structures. Please help, i am pretty sure it couldn't because of steric hindrance, however i am not sure how to explain this further and ...
September 11, 2012

social studies
What are threes major monotheistic religions in order from oldest to newest?
May 30, 2012

Chemistry
How do I calculate the mass of sodium carbonate required to neutralize 15-20 mL of 0.25M HCl at the stoichiometric point?
May 17, 2012

Chem
You have a 46.0 G sample of H20 at a temperature of -58.0*C. How many joules of energy are needed to heat the ice to 95.3*C?
May 14, 2012

Finance 370
A bond that has a $1000 par value (face value) and a contract or coupon interest rate of 11.5. The bonds have a current value of $1120 and will mature in ten years. The firm's marginal tax rate is 34%. Using the time value of money, calculate the yield to maturity on a ...
April 9, 2012

Chem
How would the reducing agent NaBH4 compare with that of LiAlH4?
March 15, 2012

english
I really need someone to help with errors. Teenagers and Driving: A Dangerous Combination Teenagers and vehicles can be a very dangerous combination. Teenage drivers are four times more likely to be involved in a motor vehicle crash than drivers of older age. According to the ...
January 31, 2012

English
I really need help with my writing. I need some to proof read a paper that I wrote. Two Career Families versus One Career Families Back in the early days the traditional working family was a one career family. The roles of husband and wife were defined and everyone did as they...
January 28, 2012

physics
How much kinetic energy does a 2000 kg traveling 70 mph have?
January 24, 2012

Literature & Writing
In Bless Me, Ultima I have some questions about the scenes where Antonio talk with Florence about sin and God in chapter 17. The page numbers are in the 190s in the small book or early 200s in the bigger book. I lots of ideas, but it's nice to have external feedback. 1. ...
January 21, 2012

geometry
The measure of the side of rhombus GHIJ is equal to the measure of the side of square RSTU. Which statement about the two quadrilaterals must be true? A. Their angle measures are equal. B. Their diagonal measures are equal. C. Their areas are equal in measure. D. Their ...
December 1, 2011

geometry
The measure of the side of rhombus GHIJ is equal to the measure of the side of square RSTU. Which statement about the two quadrilaterals must be true? A. Their angle measures are equal. B. Their diagonal measures are equal. C. Their areas are equal in measure. D. Their ...
December 1, 2011

Regression analysis
1) Salary levels are determined by a number of important factors such as the years of experience, education level, job classification, etc. Other factors that contribute to salary levels might be due to gender or racial discrimination. Discuss how a dummy-variable regression ...
November 10, 2011

math
304-152=152
November 4, 2011

math
use each of the digits 0 1 3 4 5 exactly once to write a decimal subtraction problem.the difference must be the same as one of the decimals in the problem
November 4, 2011

geometry
the amount of metal in the nut?
October 16, 2011

7th grade Math
What is 32 te/min un./s
October 12, 2011

Physics 1
5.28 seconds
October 4, 2011

maths urgent
The average mass of half the number of crabs in a basket is 350g, the average mass of the remaining crabs is 300g. If the total mass iof the crabs in the basket is 13kg, how many crabs are there in the basket?
September 22, 2011

physics
the moon orbits the earth in a circle (near enough) of radious 3.8x10^8 m, taking 27.3 days to make a complete orbit. what is the speed of the moon relative to the earth?
September 8, 2011

mathsP5
I agree but my teachers don't care and even wrong answers have to be solved by ourselves and I keep getting them wrong again tks to both of you for your help
August 20, 2011

mathsP5
There are 2 packets of flour, Y & Z.The ratio of the mass of Y to Z is 4:1. If 26g is added to Z,the ratio of the mass of Y to Z is 7:5. Find the mass of the 2 packets at first. Pls show how to solve by model method as i have not learnt algebra. tks
August 20, 2011

Maths
thanks
August 16, 2011

Maths
The breadth of a rectangular plot of land is 85% of its length. The difference between the length and breadth is 18m. A) what is the length B) what is the area
August 16, 2011

Maths
I'm sorry, I can't get it, pls help clarify. thanks
August 16, 2011

Maths
Mr T's salary is $800 less than 3 times of his wife's salary. His wife's salary is 4/10 as much as his. how much is their total monthly salary?(non-algebra method pls)
August 16, 2011

maths
16 similar writing pads and 24 similar jotter books are stacked in a pile. their total thickness is 14.4cm.Each writing pad is 3x as thick as each jotter book. what is the thickness of the pile of jotter books? Please show me a non-algebraic method of solving this.Thanks
August 15, 2011

Maths
Sorry, i need to solve this by a non-algebraic way as we have not learnt algebra yet. Can you show me how? Tks.
August 14, 2011

Maths
16 similar writing pads and 24 similar jotter books are stacked in a pile. their total thickness is 14.4cm.Each writing pad is 3x as thick as each jotter book. what is the thickness of the pile of jotter books?
August 14, 2011

Maths
ok, thanks. I get it now.
August 14, 2011

Maths
That was not the answer the teacher gave. It was $179.50 for the coat. How do I get this answer?
August 14, 2011

Maths
Mr Zubir bouught a pair of pants, a shirt and a coat. The pair of pants and shirt costs $100.90. The pants and coat costs $244.50. The coat costs 5 times as much as the shirt. How much did Mr Zubir pay for his coat?
August 14, 2011

Maths
Caharles can buy 50 oranges and 60 apples for $100. He can 100 oranges for $100. How many apples can he buy for $100?
August 7, 2011

Maths
1/7 of Matthew's allowance is equal to 3/8 of Ryan's allowance. What is the ratio of Matthew's allowance to Ryan's?
August 7, 2011

Math
Abdul and his brother weigh 15.25kg. Abdul and his father weigh 72.25kg. What is Abdul's weight?
August 4, 2011

maths
the mass of a boy is 36.1kg when rounded off to 1 decimal place. If his mass is less than 36.1kg, what is his possible mass?
July 25, 2011

chemistry
industral chemistry and petrochemicals technology
July 7, 2011

music
look him up on Google and try to fi8ned info about him!!!
June 28, 2011

6th grade math
how do you round the number 128 to the nearest tenths place
June 27, 2011

com 156
yes it is possible if they put a lot of effort in there work like if you played an instrument and you wanted to write a song to the president about politics then you could do it becoas you would be putting a lot of effort
June 24, 2011

Maths Parabola
if a parabola is defined by f(x)=ax+bx+c,where a straight line is defined by g(x)=-1/2x.then Df=R,Rf=(-2,infinity) and b/2a=2 determine a,b and c and write down the equation of f.
June 6, 2011

Maths
suppose function f,g,h and l are defined as follow:f(x)=4xsquared-5x+1,g(x)=-1/2x-3,h(x)=squared root(2-x)squared+1/2x,l(x)=square root2-x-3. .write down Df and solve inequality f(x)<0 .write down Dg and solve 4g(x)=8 .write down Dh,Dg+h and solve the (g+h)(x)=0 .write down...
June 6, 2011

algebra
Essay; show all work. Consider that the age, x, of a unicorn in human equivalent years can be given by the formula f(x) = - 0.001518x4 + 0.097326x3 – 1.3367x2 + 12.46x + 2.914. When a unicorn is 2.5 years old, what is its age in human equivalent years? What about when it ...
May 31, 2011

algebra
Essay; show all work. Bob’s Barber Shop estimates their gross revenue for the second quarter to be given by the polynomial 2x3 – 3x2 + 7x – 1. The shop estimates their costs for that quarter to be given by x2 + 4x + 2. For the second quarter, find and simplify ...
May 31, 2011

LIT
Dresden was a German city destroyed by the allies in WWII. Which of the following most likely describes the allusion to Dresden? A Dresden was the center for the production of weapons that supported the German war effort. B Dresden was a city rich with old cultural monuments ...
May 17, 2011

lit
I want to say it copan because it's an city that has a historical record.
May 17, 2011

lit
Copán is one of the most impressive sites for ruins of the ancient Maya civilization. Situated in western Honduras, Copán is where the great Maya civilization flourished. Though other Maya ruins have been found in neighboring countries, no other quite like Cop&...
May 17, 2011

lit
What is the historical allusion? For the last several months, Rebecca had been working with her team on raising money in her neighborhood to donate to the hurricane Katrina Relief Fund. They were having a competition with groups to see who could raise the most money in a year...
May 17, 2011

english
no other choice only those
May 17, 2011

english
jeffersonia
May 17, 2011

english
what is the allusion. Last year our school’s finances were in shambles. Overspending and little control over money has resulted in a situation where there is no money for new books or supplies. School officials are even wondering where they will find the money to pay the ...
May 17, 2011

lit
n 1946, Albert Einstein said if he had known the Germans wouldn't succeed in constructing the atom bomb, he "would never have lifted a finger." Did I punctuate correctly?
May 10, 2011

lit
"One day I'm going to be an astronaut," Adelle told her sister. Did I punctuate correctly?
May 10, 2011

lit
Jocelyn asked her mom, "What was it like when you were a child?" Did I punctuate correctly?
May 10, 2011

lit
What did the philosopher Aristotle mean when he said, "To perceive is to suffer"? Did I punctuate correctly?
May 10, 2011

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