Friday
July 25, 2014

Posts by Joel


Total # Posts: 247

Physics
I dont understand.

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...

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

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

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?

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

math
D is 30 feet above the ground.

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 d...

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?

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.

PreCalc
sorry that should be theta-omega not omega-theta

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

Math
The answer is integer

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 Comp...

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 b...

Chemistry
In units of joules. And in units of calories?

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

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.

math (Algebra)
(c+x)squared ----------------- 2y c= -8 x= 10 y= 6

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.)

ENG1511
He thought he could pay his school fees

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

math
60

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

Physics
you are both retarded. its 47.2

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.

BIOCHEMISTRY Practical
The concentration of the acid is o.25M

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

VERY VERY URGENT SOCIAL STUDIES!!!!
Fortunately these are common sense questions.

VERY VERY URGENT SOCIAL STUDIES!!!!
Correct sir

college trig word problem
ty

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.

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...

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)?

math
3 less than or equal to 4x-3 less than 19?

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

Ratios of Similar Figures
yes

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

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

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 “...

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 ...

Critical Thinking/Ethics
Online Poll

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 wh...

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 wh...

social studies
What are threes major monotheistic religions in order from oldest to newest?

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

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?

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 fin...

Chem
How would the reducing agent NaBH4 compare with that of LiAlH4?

Trigonometry
N+1

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 ...

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...

physics
How much kinetic energy does a 2000 kg traveling 70 mph have?

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. Wh...

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 perimet...

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 perimet...

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 m...

math
304-152=152

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

geometry
the amount of metal in the nut?

7th grade Math
What is 32 te/min un./s

Physics 1
5.28 seconds

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?

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?

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

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

Maths
thanks

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

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

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)

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

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.

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?

Maths
ok, thanks. I get it now.

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

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?

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?

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?

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

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?

chemistry
industral chemistry and petrochemicals technology

music
look him up on Google and try to fi8ned info about him!!!

6th grade math
how do you round the number 128 to the nearest tenths place

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

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.

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...

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 ...

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 ...

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 t...

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

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&aa...

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....

english
no other choice only those

english
jeffersonia

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 ...

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?

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

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

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

lit
"Maybe we should wait to begin until everyone is seated," Ana said to her band mates. did I punctuate this correctly?

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