Thursday

November 26, 2015
Total # Posts: 724

**Physics**

In a World Cup soccer match, Juan is running due north toward the goal with a speed of 7.70 relative to the ground. A teammate passes the ball to him. The ball has a speed of 13.3 and is moving in a direction of 30.5 east of north, relative to the ground. a) what is the ...
*September 25, 2012*

**math**

Every year there is a race to the top of the empire state building. In 1993 the winner got to the top in 10 minutes, 18 seconds. how many stairs did the winner go up per second, rounded to the nearest whole number
*September 20, 2012*

**Math**

What is the doubling time of prices which are increasing by 5 percent per year?
*September 19, 2012*

**Precalculus **

What is the doubling time of prices which are increasing by 5 percent per year?
*September 19, 2012*

**Math**

The half-life of radioactive strontium-90 is approximately 32 years. In 1961, radioactive strontium-90 was released into the atmosphere during testing of nuclear weapons, and was absorbed into people's bones. How many years does it take until only 8 percent of the original...
*September 19, 2012*

**math**

Show that f and g are inverse functions algebraically. f(x)=x^3/2 g(x)=3 cuberoot 2x My work so far: (3sqrt2x)^3 ------------ 2 I need help on the numeral part of the expression
*September 11, 2012*

**pre-calc**

Show that f and g are inverse functions algebraically. f(x)=x^3/2 g(x)=3 cuberoot 2x My work so far: (3sqrt2x)^3 ------------ 2 I need help on the numeral part of the expression
*September 11, 2012*

**economics**

Suppose that when a firm increases output by 20%, long-run total cost increases by 50%. The firm will experience
*August 19, 2012*

**health**

Whats the answer?
*August 11, 2012*

**Math**

What scenic structures are featured in chapter 2 Problem Solving on Location?
*August 1, 2012*

**health**

hey .... if its wrong why dont you put the answer !!!
*August 1, 2012*

**math**

x> 2
*July 19, 2012*

**Organic Chemistry**

a) What would be the product formed if diphenylacetylene were reacted with aqueous sulfuric acid? b) What would be the product formed if diphenylacetylene were reacted with two equivalents of HBR?
*July 14, 2012*

**government**

The first American voters were only white, male ---------s
*July 5, 2012*

**statistics**

A particular report included the following table classifying 711 fatal bicycle accidents according to time of day the accident occurred. Time of Day Number of Accidents Midnight to 3 a.m. 38 3 a.m. to 6 a.m. 29 6 a.m. to 9 a.m. 64 9 a.m. to Noon 78 Noon to 3 p.m. 98 3 p.m. to ...
*June 28, 2012*

**calculus**

Please help! ∫17dx/x^2(sqrt(x^2+49)) .. let x=7tan(θ). thank you so much for your help!
*June 6, 2012*

**math**

the gerund phrase is: studying calculus for the noun function I put: predicate noun, correct?
*May 22, 2012*

**essay**

what are some some similarities and differences between dawn and night by elie wiesel?
*May 17, 2012*

**Reading comprehension**

False
*May 9, 2012*

**Reading comprehension**

Reading - Annie, Tuesday, May 8, 2012 at 9:56pm The fish sizes r on a graph Blue fish. 70 feet Red fish. 45 feet Question true or false The blue fish is not as long as the red fish. True or false
*May 9, 2012*

**Reading comprehension**

False
*May 8, 2012*

**Reading comprehension **

Reading - Annie, Tuesday, May 8, 2012 at 9:56pm The fish sizes r on a graph Blue fish. 70 feet Red fish. 45 feet Question true or false The blue fish is not as long as the red fish. True or false
*May 8, 2012*

**Reading comprehension**

@Ms Sue I copied the statement wrong it is The blue fish is not as long as the red fish
*May 8, 2012*

**Reading comprehension**

Ms Sue did u see my answer
*May 8, 2012*

**Reading comprehension**

I think the answer is false because not as long means that the red fish is longer
*May 8, 2012*

**Reading comprehension**

Reading - Annie, Tuesday, May 8, 2012 at 9:56pm The fish sizes r on a graph Blue fish. 70 feet Red fish. 45 feet Question true or false The red fish is not as long as the blue fish. True or false
*May 8, 2012*

**Reading**

The fish sizes r on a graph Blue fish. 70 feet Red fish. 45 feet Question true or false The red fish is not as long as the blue fish. True or false
*May 8, 2012*

**Reading**

I need to know if the statement is true or false
*May 8, 2012*

**Reading**

If a blue fish is 70 ft long and a red fish is 45 feet long. This is statement true or false. A blue fish is not as long as a red fish
*May 8, 2012*

**Math**

What is 0.5 to the tenth power, as a fraction? a.k.a. 0.0009765625 as a fraction
*May 2, 2012*

**english**

In the book Roll of Thunder, Hear my Cry, what is the double meaning of Mr. Granger's words when he says he ain't gonna stand for no hanging on his place, and if y'all touch one hair on that boy's head, he's gonna hold every man responsible"?
*April 26, 2012*

**chemistry**

what is the volume at STP of a sample of CO2 that has a volume of 75.0 ML at 30c and 680 mm Hg
*April 26, 2012*

**chem**

a volume of 20. l of O2 os warmed from -30c to 85c what is the new volume if the pressure is kept constant
*April 24, 2012*

**geometry**

If m = 6.25 cm and n = 10 cm, what is the measure of angle ?
*April 16, 2012*

**Math**

Error Analysis: A friend says that the retail price of an item with a wholesale price of $80 is $100 after a markup of 125%. Describ and correct the error in the person's statement.
*April 12, 2012*

**English**

I read A partial rememberance of a puerto rican childhood. I'm suppose to be writing a essay but I need a thesis to do an outline.
*March 25, 2012*

**English**

Women is going crazy that a man doesn't care for her so it is driving her crazy. Men do harsh things like abusing their wife.
*March 25, 2012*

**English**

I am writing a paper and I was wondering does this sound like a good thesis? Cofer shows not only the crazyness women but also shows how men can be harsh.
*March 25, 2012*

**Chemistry PLEASE HELP!!**

energy from glucose is obtained from this equation when it is oxidized in the body C6H12O6 + 6O2 --> 6CO2 + 6H2O What is the catalyst in this equation?
*March 22, 2012*

**English**

isn't the question actually something like "You're walking home alone when you....." ??
*March 22, 2012*

**physics**

A 6.5 g bullet leaves the muzzle of a rifle with a speed of 347 m/s. What total constant force is exerted on the bullet while it is traveling down the 0.83 m long barrel of the rifle?
*March 19, 2012*

**physics**

The sum of two forces, one having a magni- tude of 2 N acting due west and other having a magnitude of 8 N acting due north is?
*March 19, 2012*

**physics**

A blimp is traveling due North at 80km/hr with respect to the air, while the wind is blowing from northeast at 25km/hr with respect to the ground. What is the velocity of the blimp with respect to the ground? Thanks.
*March 14, 2012*

**Chemistry**

1) Prepare 100mL of 10%w/w HCl from 37%concentrated HCl(density of 37%HCl =1.19g/ml) 2) Prepare 100mL of 10%w/v HCl from 37% concentrated HCl(density of 37%HCl=1.19g/ml) Can you please show the calculation steps for 1) & 2)? Is 10%w/v HCl the same as 10%w/w HCl? Thanks.
*March 12, 2012*

**English - thank you ms sue i will wait **

i will wait and thanks a lot
*March 11, 2012*

**English - please help i had posted 3 times and no **

please can you make correction in my short story. i am very bad at grammar and even my parents does not khnow english well. can you proof reed my short story. Love-Hate story “Happy birthday Khushi”, her family said as they came to her room at midnight. “Thank ...
*March 11, 2012*

**eng lit**

please proof read my short story please and make some correction Love-Hate story “Happy birthday Khushi”, her family said as they came to her room at midnight. “Thank you, Mom, Dad and my lovely sister”, Khushi said with a huge smile. Khushi laid down on ...
*March 9, 2012*

**Chemistry**

Oh, sorry. 25 g of Zinc and 30 g of sulfur. I already found that Zinc is the limiting reagent, but I'm stuck on the rest.
*March 8, 2012*

**Chemistry**

Zinc and sulfur react to form zinc sulfide according to the equation Zn+S=>ZnS a) How many grams of ZnS will be formed? b) How many grams of the excess reactant will remain after the reaction is over?
*March 8, 2012*

**Physics help.**

If a curve with a radius of 94.5 m is perfectly banked for a car traveling 72.4 km/h, what must be the coefficient of static friction for a car not to skid when traveling at 96.4 km/h?
*March 5, 2012*

**Biology**

The genes for hair color and eye color are linked
*March 2, 2012*

**Math **

r=40-2t shows the relationship between the average rate of speed, r, of a car in meters per second, and the time, t,in seconds, as the car slows down.
*February 26, 2012*

**College Physics**

A Fraunhofer diffration pattern is produced on a screen 210cm from a single slit. The distance from the center of the central maximum to the first-order maximum is 7560 times the wavelength (lambda). Calculate slit width. Answer in __m
*February 23, 2012*

**College Physics**

The lines in a grating are uniformly spaced at 1530 nm. Calculate the angular separation of the second order bright fringes between light of wavelength 600nm and 603.11nm. Answer in __mrad
*February 23, 2012*

**statistics**

f someone scored two Standard Deviations above the Mean on a standardized test where the Mean = 100 and the Standard Deviation = 15, then that person’s numerical score would be…? A. 125 B. 130 C. 160 D. 90th Percentile
*February 20, 2012*

**Chidren,Families,and Society**

Larry is a very aggressive four-year-old child.he watches many television programs that contain violence.it's most likely that
*February 20, 2012*

**history**

Help needed! I'm comparing France and the USA. If France had the Paris vs. Versaille conflict with regards to the city capital. As much as capitals showed the unity amongst the people, it also produced conflicts between different sectors of society. What did the United ...
*February 19, 2012*

**Chemistry**

How to prepare 100mL of 3% w/w Hydrogen Peroxide from 30% w/w Hydrogen Peroxide?Specific Gravity of 30%w/w Hydrogen Peroxide is 1.11g/mL. Can you please show the calculation steps? Thanks.
*February 18, 2012*

**history**

okay. thank you :)
*February 18, 2012*

**history**

Thank you. :) Though I was thinking, should it be "full potential"? or just the potential.. I mean, urban life is still moving forward so there's no way of telling that it has reached its full potential, right? :) Or maybe I'm just overthinking.
*February 18, 2012*

**history**

Well, basically, here is what I've got so far.. I believe that the industrial revolution promoted urban life. To a certain point, people would a associate urban living to better living. Migration from rural areas to urban areas was popular back then. During the industrial ...
*February 18, 2012*

**history**

Cities and urban areas were a source of economic opportunities in the post-Medieval Western world. How was the full potential of Western cities and urban areas in this regard was realized during the Industrial Revolution?
*February 18, 2012*

**Chilsren,Families,and Society**

18.Which of the following statements implies rules of confidentality?A.You can tell the librarian that you heard that Joey's father was arrested for drug use.B.Parents must give permission to release school records to the child's therapist at the community clinic. C. ...
*February 17, 2012*

**Chemistry**

How do I prepare 100mL of 10g/L HCl from concentrated HCl(37%HCl, density 1.19g/mL) Is it 2.28mL of conc HCl dilute to 100mL with water? Please show the calculation steps.
*February 16, 2012*

**physics**

t(s)=0.0,1.0,2.0,3.0,4.0,5.0,6.0,7.0 v(m/s)=0.0,4.6,8.9,13.4,18.0,22.9,27.6,32.0 find the area underneath the graph between t=2.0s and t=6.0s, i know i will have to break this down into two separate shapes, a rectangle and a triangle then add them together, i just don't ...
*February 8, 2012*

**online**

I bought car for $32.000. Interest 11%. What my payment and how long will take?
*February 3, 2012*

**math**

The product of two consecutive intergers is 56. Find the intergers.
*January 31, 2012*

**Engineering/Chemistry**

m_dot = 2000 kg/h q = 111600 kJ/h T_final = 95C C_p = 3.9 kJ/(kgC) equation: q = m_dot*c_p*(T_initial-T_final) plug in all the value and solve for T_initial *NOTE* remeber deta_T both in C and K is the same. So don't worry
*January 31, 2012*

**Science**

Can u help me find a picture of a sea sponge budding ?
*January 27, 2012*

**chemistry**

Aluminum metal generates H2 gas when dropped into 6.00 M HCl. Calculate the mass of H2 that will form from the complete reaction of 0.365 g Al with 8.40 mL of 6.00 M HCl.
*January 26, 2012*

**math**

Determine the values of k for which the function f(x)= 4x^2-3x+2kx+1 has two zeros , check these values in the original equation
*January 25, 2012*

**math**

Determine the values of k for which the function f(x)= 4x^2-3x+2kx+1 has two zeros , check these values in the original equation
*January 25, 2012*

**math**

Factor completely x(x+1)^2-4(x+1) (2x+3)^2-9
*January 25, 2012*

**math**

solve the equation (1/4)^x = (1/8)^2x-1 solve the equation 3^-x+2=27^x-4
*January 25, 2012*

**science**

Why is a pizza cutter handle a lever?
*January 22, 2012*

**bio**

sorry i meant arteries
*January 22, 2012*

**bio**

name three major blood vessels that branch off the aortic arch and the body part the blood is carried to name two major artries that branch off the dorsal aorta and the organ they carry blood to
*January 22, 2012*

**bio**

for a fetal pig why is it difficult to find the urinary bladder by describing the specific location ? what structures in the umbilical cord remove waste materials from a fetal mammal?
*January 22, 2012*

**bio**

The fetal pig does not have functional lungs, since the lungs are not being used is there any need to transport blood tot he lungs before the fetus is born
*January 22, 2012*

**bio**

I did a pig dissection , but i am not to sure about these questions, any help would be great ! 1. The lungs of a fetal pig serve as a protection for what important body organ 2. The respiratory system is located on the ventral side of the pigs body, what 3 ways is the tract ...
*January 22, 2012*

**math**

in 2nd year Adam owed $ 977.53, in the 3rd year he owed $ 1036.18 and in the 4th year he owed $1098.35 how much was the loan originally, and determine the future value of the loan after 10 years
*January 19, 2012*

**math**

Loan #1 Year Amount owed 1 $3796 2 $3942 3 $4088 Loan # 2 Year Amount owed 1 $977.53 2 $1036.18 3 1098.35 For loan #1 is simple interest. Loan #2 is compound interest How much was each loan originally Determine the future value of each loan after 10 years No one has answered ...
*January 19, 2012*

**math**

Vlad purchased some furniture for his apartment. The total cost was $ 2943.37. He paid $ 850 down and financed the rest for 18 months. At the end of the finance period .Vlad owed 4 2147.28 . What annual interest rate, compounded monthly , was he being charged ? Round your ...
*January 18, 2012*

**math**

oh sorry 6%/a
*January 18, 2012*

**math**

Sally invests some money at 65/a compounded annually. After 5 years . she takes the principal and interest and reinvests it all at 7.2%/a compounded quarterly for 6 more years. At the end of this time, her investment is worth $ 14 784.56 . How much did Sally originally invest?
*January 18, 2012*

**Math**

on the day Rachel was born, her grandparents deposited $ 500 into a savings account that earns 4.8%/a compounded monthly . They deposited the same amount on her 5th, 15th, and 10th birthdays. determine the balance in the account on Rachel's 18th birthday
*January 18, 2012*

**Math**

oh sorry 45%/a
*January 18, 2012*

**Math**

Bermie deposited $ 4000 into an account that pays 45/a compounded quarterly during the first year. The interest rate on this account is then increased by o.2% each year. Calculate the balance in Bernie's account after three years.
*January 18, 2012*

**Math**

Sara buys a washer and a dryer for $2112.She pays $500 and borrows the remaining amount. A year and a half later she pays off the loan, which compounded semi-annually, was Sara being charged.
*January 12, 2012*

**physics**

Thank you very much! I appreciate your help! :)
*January 11, 2012*

**physics**

A student rides on a train traveling at Vt = 36ikm/hr (with the respect to the ground). What are the speed and the velocity of the student with respect to the ground if he runs at 5.0im/s? -5.0 m/s? 5.0j m/s perpendicular to the direction of motion of the train?
*January 11, 2012*

**Math**

Tia is investing $ 2500 that she would like to grow to $ 6000 in 10 years, at what annual interest rate compounded quaterly must Tia invest her money
*January 11, 2012*

**math**

Nazir saved $900 to buy a plasma tv, he borrowed the rest at an interest rate of 18%/a compounded monthy, 2 years later he paid $ 1420.50 for the principal and the interest, how much did the tv originally cost
*January 11, 2012*

**Math**

Dieter deposists $ 9000 inoan account that pays 10%/a compunded quarterly, after 3 threes the inerest rate changes to 9%/a compounded semi-annually, calculate the value of his investments 2 years after this change
*January 11, 2012*

**Math**

Sima invests $ 4240.00 in the first year, $ 4494.40 in the second year , and $ 4764.06 in the third year , how much did sima invest
*January 11, 2012*

**math**

A simple fractal tree Grows in stages. A each new stage, two new line segments branch out from each segment at the top of the tree. The first five stages are shown. How many line segments need to be drawn to create stage 20? Stage 1- 1 Stage 2 - 3 Stage 3 - 7 Stage 4 -15 Stage...
*January 10, 2012*

**Math**

George invests $ 15 000 at 7.2%/a compounded monthly . How long will it take for his investment to grow to $ 34 000
*January 10, 2012*

**Math**

Serena wanst to borrow $15 000 an pay it back in 10 years. Interest rates are so high, so the bank makes her 2 offers option 1 - borrow the money at 12%/a compounded quarterly for the full term option 2 -Borrow the money at 12%/a compunded quarterly for 5 years and then ...
*January 10, 2012*

**math**

How long would you have to invest $5300 at 7.2%/a simple interest to earn $1200 interest
*January 9, 2012*