Monday

February 20, 2017
Total # Posts: 808

**physics**

You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 294 N for 7.6 s, during which time the refrigerator moves a distance of 3.2 m at constant velocity. (a) What is the total work (by all forces) done on the refrigerator? (b) What is...

*September 30, 2013*

**Computer Science**

I need help with this problem. I don't know how to set it up correctly. Input a list of positive numbers (terminated by 0)into an array, and output the result. Use a subprogram to output the numbers, a function to find the mean, an a subprogram to output the result. I know...

*September 28, 2013*

**humanservices101**

Critical thinking question: how is current child welfare policy and practice shaped by religious and philosophical beliefs, societal structures, and economic systems?

*September 27, 2013*

**English**

Please evaluate the writing, grammar, style, spelling as well as content. People take out oil from the sands in AB so we can drive and leave tailings ponds. This caused a lot of damage to the land and negative impacts to wildlife. Natives get sick from eating to many fish from...

*September 21, 2013*

**Accounting**

Why is it more difficult to account for the inventory of a manufacturing firm than for that of a merchandising firm?

*September 18, 2013*

**Algebra**

Find the average speed Hike 52 miles in 3 days Drive 69 kilometers in 3/4 hour

*September 15, 2013*

**public speaking**

when using the internet to conduct research,it is most important to?

*September 11, 2013*

**social studies; same study diff question**

which one of the following conclusions is supported by the results of these studies? 1)characteristics other than one's name have no effect on academic achievement. 2)Unusual names do not determine intellectual development. 3)Ethnic group membership is the main factor ...

*September 8, 2013*

**Math**

Is this a trick question? I need to write the number 79 in short word form, would it be seventy 10's and one 9 or 10 sevens and 9 ones? Please, please, please help me Thank You

*September 4, 2013*

**Math**

Would 72,060,964,765 look like the following in it's expanded form? 7X 10,000,000,000 + 2X 1,000,000,000 + 0X 100,000,000 + 6X 10,000,000 + 0X 1,000,000 + 9X 100,000 + 6X 10,000 + 4X 1,000 + 7X 100 + 6X 10 + 5X 1 been working on this for 1 hour!

*September 3, 2013*

**Physics**

A car driving at 14m/s hits the brakes and comes to a stop in 4.1 seconds. What was the car's acceleration during this stop?

*August 18, 2013*

**History**

I have a paper I must do and have been trying all summer to finish. I have read the book The Story of Sacagawea and now what I need to do is write what the main idea/topic is ( which I know is Sacagawea) but then I have to write a main idea's # 1 and # 2 and details to ...

*August 15, 2013*

**Reading**

Can you please write this into terms easier to understand? Thanks! Private life was infected with impurity to which licentiousness of the Catholic clergy appeared like innocence.

*August 11, 2013*

**Reading**

Oh. Ok. Makes sense. Thanks!

*August 10, 2013*

**Reading**

Can you please rewrite this sentence into terms easier to understand? Thanks. Now celibacy yielded to widespread clerical concubinage and, in the convents, to promiscuity.

*August 10, 2013*

**algebra1 HELP PLEASE Thanks you!!**

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball. h1(t) = h2(t) = When does ball 1 reach the ground? Round to the nearest ...

*July 8, 2013*

**Physical science**

Why are models important?

*June 30, 2013*

**Phoneix**

Jarman consulting inc. provides financial and estate planning services on a retainer basis for the executive officers of is corporate clients. it incurred the following labor costs on services for three corporate clients during march 2006. Driect labor contract 1 $12,000 ...

*May 18, 2013*

**Maths! Check Answers**

Thx

*May 15, 2013*

**English**

Why is the ability to draw conclusions important in research? A. To discover the effect of the topic B. To enable further research C. To generate topic sentences D. To formulate a plan for research Is It A. ??

*April 26, 2013*

**geometry**

On my last question, just posted, I asked what percent of the area of the target was shaded. The answer options were 5%, 10%, 20% or 80%?

*April 8, 2013*

**geometry**

There is a square with a star inside. The square has 25cm to show the length of one side. On the right, outside the square, it says 125cm squared, with a line pointing the center of the star in the square. The question is; The target of a shooting game features a shaded star ...

*April 8, 2013*

**Math**

I think this is geometry: There is a small box with a black frame around it. Inside the box, at the bottom, is an 8. Inside the box, to the right, is a 2. It looks like they are showing Length & Height. On the outside of the box, under the 8, there is a 10. To the right, ...

*April 8, 2013*

**Science**

whatever

*April 8, 2013*

**Science**

please help i know but y u guys r like that ? so rude mean ugly y ??

*April 8, 2013*

**Science**

What?!

*April 8, 2013*

**Science**

Describe what happens to body systems over time from infancy to adulthood to older adulthood. In your own words please. thank you guys ;)

*April 8, 2013*

**algebra**

slope line of (-1,3)(4,5)

*April 3, 2013*

**Algebra 2**

line slope (0,3)(5,7)

*April 2, 2013*

**math**

The ratio of boys to the total number of students is 2:5. If there are 123 girls, how many boys are there? I estimated 49.2, is that correct?

*March 23, 2013*

**math decimals**

Is 1/6 > or< 0.16, because the repeating decimal in 1/6 is what confuses me.

*March 23, 2013*

**Crocket**

A 143m wire is cut into three pieces. The second is 3m longer than the first. The third is 4/5 as long as the first. How long is each piece?

*March 22, 2013*

**statistics**

Suppose we take a random sample of size n from a normal population with variance, σ2 . It can be shown that (n−1)s2/σ2 has a chi-square distribution with n−1 degrees of freedom, where s is the sample variance. Below is a random sample of size 8 drawn from...

*March 18, 2013*

**Social Studies**

1) From 1892 to 1954, millions of immigrants entered the United States through an immigration station in the Northeast called a. Empire State Station. b. Big Apple Harbor. c. Manhattan Port. d. Ellis Island. 2) Northeastern cities are important trade centers. Which of the ...

*March 11, 2013*

**biology**

Less water flowing into it, which can change the mineral and salt composition of the water, cause changes in flow and temperature, and these in turn can dramatically change the types of plant and animal life in the area. Of course, this is a moot point because virtually all ...

*March 11, 2013*

**Statistics**

Consider the hypothesis test given by Ho:u=530, H1:u does not equal 530. In a random sample of 85 subjects, the sample mean is found to be 522.3. Also, the population standard deviation is 29. Determine the P-value for this test. Is there sufficient evidence to justify the ...

*March 8, 2013*

**Math**

The IQ scores are normally distributed with a mean of 100 and a SD of 15. A) What is the probability that a randomly person has an IQ b/t 85-115? Show work B) Find the 90th percentile of the IQ distribution? C) If a random sample of 100 people are selected, what is the SD of ...

*March 8, 2013*

**Theoretical&Experimental Probability please help!**

BUT AT LEAST HE TRY GOOD TRY MAN GOOD TRY :D

*March 6, 2013*

**Theoretical&Experimental Probability please help!**

LOL SO FUNNY MAN HAHAHA LOL........... ;)

*March 6, 2013*

**Math**

Thank you

*March 6, 2013*

**Math**

in division why should the remainder not be greater than the divisor

*March 6, 2013*

**math**

a race track is a mile around circle which equals 5,280 circumference. To find the diameter (the the width of the center of the circle) do I divide the 5,280 by 2?

*March 4, 2013*

**Science**

Describe how you would prepare 25.0ml of a 1.00 M NaOH solution.

*February 27, 2013*

**Geometry**

Oops, I'm sorry i got confused the answer is pi(21)^2 = 1384.74

*February 26, 2013*

**Geometry**

I'm so sorry but i'm in a huge rush ms.sue :( !

*February 26, 2013*

**Geometry**

Is it a) 137.6mm2 is the answer because that's what I got ?

*February 26, 2013*

**Geometry**

OK, I'm so so sorry. It would never happen again! OK thank you so much when i'm finish I'll will tell you the answer OK? :D

*February 26, 2013*

**Geometry**

NEED HELP!!! :( I'm new here so ..... i don't know :( ????!!!

*February 26, 2013*

**Geometry**

Please someone answer, Ms.Sue please anybody...? :( ??? :(

*February 26, 2013*

**Geometry**

1. Find the diameter of a circle with a circumference of 50 mm. Round your answer to the nearest tenth. a) 16.0 mm b) 26.4 mm c) 8.4 mm d) 33.5 mm 2. Find the area of the circle with the given radius or diameter. Round your answer to the nearest tenth. Diameter = 42.0 mm a) ...

*February 26, 2013*

**Statistics**

A simple random sample of 120 SAT scores ahs a mean of 1540. Assume that SAT scores have a population standard deviation of 333. a) Construct a 95% conf. interval estimate of the mean SAT score. b) Is a 99% conf. interval estimate of the mean SAT score wider than the 95% conf...

*February 26, 2013*

**statistics**

Accuracy of price scanners at Wal-Mart. The National Institute for Standards and Technology (NIST) mandates that for every 100 items scanned through the electronic checkout scanner at a retail store, no more than 2 should have an inaccurate price. A recent study of the ...

*February 24, 2013*

**statistics**

Accuracy of price scanners at Wal-Mart. The National Institute for Standards and Technology (NIST) mandates that for every 100 items scanned through the electronic checkout scanner at a retail store, no more than 2 should have an inaccurate price. A recent study of the ...

*February 23, 2013*

**math**

sam, pam, ken, and jen wrote each of their names on a slip of paper and placed them in a bowl.Sam was the first to randomly select a name from the bowl. What is the probability that he will select his own name? express answer as a fraction and a percent.(B)If sam selects Pam ...

*February 22, 2013*

**statistics**

otorola discovered that the average defect rate for parts produced on an assembly line varies from run-to-run and is approximately normally distributed with a mean equal to 3 defects per million. Assume that the goal at Motorola is for the average defect rate to vary no more ...

*February 22, 2013*

**statistics**

A local country club has a membership of 600 and operates facilities that include an 18-hole championship golf course and 12 tennis courts. Before deciding whether to accept new members, the club president would like to know how many members regularly use each facility. A ...

*February 9, 2013*

**science**

what is the main cause of global wind patterns?

*February 5, 2013*

**science**

Some parts of the atmosphere are warmer than others. This causes air particles to-------,which in turn causes the wind. Moves heat by conduction form convestion currents move by radiation become more dense. I am just having a hard time finding the answer to this question.

*February 5, 2013*

**math**

$800 worth of tickets were sold.adult price is $6.children is $3 and seniors $2. 90 adult purchase ticket,60 children purchase tickets.how many tickets were purchase at senior price and how would you write an equation and solve to find the solution? how do you explain the ...

*January 23, 2013*

**ENGLISH !(:**

the answer to which of the following groups of words is a clause is If the catcher dropped the ball. catcher is the subject, dropped the ball is the predicate dropped is the verb. The answer to the qestion What is the phrase in the following sentence I believe is a sports ...

*January 21, 2013*

**math**

john is think of a number. If you divide the difference of his number and 12 by 7, and then add 23, the result is 32. what is the number and can you explain your answer?

*January 18, 2013*

**algebra**

an investor invested a total of 1,100 in two mutual funds. One fund earned a 5% profit while the other earned a 2% profit. If the investor's total profit was 49.00 how much invested in each fund?

*January 17, 2013*

**algebra**

on a scatter plot how can you determine if driving speed and driving time show a positive, negative or no relationship?

*January 15, 2013*

**social studies**

List three continents that are located in both the northern and western hemisphere?

*January 13, 2013*

**Finanical**

4. An investor purchases a mutual fund share for $100. The fund pays dividends of $3, distributes a capital gain of $4, and charges a fee of $2 when the fund is sold one year later for $105. What is the net rate of return from this investment?

*December 19, 2012*

**Finanical**

4. An investor purchases a mutual fund share for $100. The fund pays dividends of $3, distributes a capital gain of $4, and charges a fee of $2 when the fund is sold one year later for $105. What is the net rate of return from this investment?

*December 18, 2012*

**Chemistry**

When 0.40 g of impure zinc reacted with an excess of hydrochloric acid, 127 mL of hydrogen was collected over water at 10 degress C The external pressure was 737.7 Torr. a) What volume would the dry hydrogen occupy at 1.00 atm and 298 K ? b) What amount (in moles) of H2 was ...

*December 13, 2012*

**Chemistry**

Compute the volume of helium at 1.0 atm and 298 K that will be collected if 2.5 g of 222Rn is stored in a container able to expand to maintain a constant pressure for 15 days. Assume that 222Rn decays to 218Po with a half-life of 3.824 days.

*December 11, 2012*

**Chemistry**

Health regulations stipulate that the amount of arsenate in drinking water be no grater than 10 parts per billion (ppb) arsenic. If the arsenic present is arsenate, AsO4^-3, what mass of sodium arsenate would be present in a 1.00 L sample of drinking water that just meets the ...

*December 11, 2012*

**math**

570 feet

*December 10, 2012*

**math**

A cylindrical container has a volume of 226 cubic inches. the container is filled 3/4 of the way with water. To the nearest cubic inch, what is the volume of water in the container? How many more cubic inches of water is needed to fill the container? please explain.

*December 6, 2012*

**Algebra**

Please show me step by step if possible: Find dimensions of a rectanglar rug whose perimeter is 28 ft and whose area is 45 ft². The length (longer side) equal ___ft and width (shorter side) equal ____ft.

*December 4, 2012*

**Algebra**

Please show me step by step if possible: Find dimensions of a rectanglar rug whose perimeter is 28 ft and whose area is 45 ft². The length (longer side) equal ___ft and width (shorter side) equal ____ft.

*December 4, 2012*

**math-urgent**

Newton’s Law of Cooling states that the temperature of a heated object decreases exponentially over time toward the temperature of the surrounding medium. The temperature u of a heated object at a given time t can be modeled by the following function: u(t)=T+(u-T)e^kt K&...

*December 4, 2012*

**Algebra**

Do anyone know what the domain and vertical asymptote is for: f(x)=4 ln(x)

*December 4, 2012*

**math**

Newton’s Law of Cooling states that the temperature of a heated object decreases exponentially over time toward the temperature of the surrounding medium. The temperature u of a heated object at a given time t can be modeled by the following function: u(t)=T+(u-T)e^kt K&...

*December 4, 2012*

**math**

K= -1/-2.5 sorry for the mix up

*December 4, 2012*

**math**

Newton’s Law of Cooling states that the temperature of a heated object decreases exponentially over time toward the temperature of the surrounding medium. The temperature u of a heated object at a given time t can be modeled by the following function: u(t)=T+(u-T)e^kt K&...

*December 4, 2012*

**Algebra**

Could someone please help me with this word problem? The City Zoo has different admission prices for adults and children. When three adults and two children went to the zoo, the bill was $80.88. If two adults and three children got in for $76.47, then what is the price of an ...

*December 2, 2012*

**Algebra**

Please show me step by step in finding the center and the radius of the circle, then graphing if possible: (x-3)²+y²=6 Thanks

*December 2, 2012*

**Algebra**

will you please show me step by step in solving: 1/2 log b + 3 log c. I need to express as a single log logarithm and if possible, simplify Thanks

*December 2, 2012*

**Algebra**

Please show me step by step on solving this problem? log₅(2x-9)+ log₅(x+2)= 1 Thank you I'm getting 2x²-5x-28=0 which is a empty set. Trying to make sure I'm correct if I am. Thanks so much for your help

*December 1, 2012*

**algebra**

ln x¹³ = (ln x)² please show me how to solve this step by step Thanks

*November 25, 2012*

**chemistry**

The molar volume of a certain form of solid lead is 18cm3/mol. Assuming cubic closest packed structure, determine the number of Pb atoms per unit cell.

*November 3, 2012*

**chemistry**

The hybridization of the lead atom in PbCl4 is...?

*November 3, 2012*

**PHYSICS (please help)**

A solid, uniform disk of radius 0.250 m and mass 51.1 kg rolls down a ramp of length 4.60 m that makes an angle of 18° with the horizontal. The disk starts from rest from the top of the ramp. a)Find the speed of the disk's center of mass when it reaches the bottom of ...

*October 31, 2012*

**INTRO TO PHYSICS**

Each of the following objects has a radius of 0.174 m and a mass of 2.16 kg, and each rotates about an axis through its center (as in the table below) with an angular speed of 37.3 rad/s. Find the magnitude of the angular momentum of each object. >Hoop of thin cylindrical ...

*October 31, 2012*

**INTRO TO PHYSICS**

a) A simple pendulum consists of a small object of mass 3.3 kg hanging at the end of a 2.0-m-long light string that is connected to a pivot point.Calculate the magnitude of the torque (due to the force of gravity) about this pivot point when the string makes a 4.5° angle ...

*October 31, 2012*

**math**

is y=0.005x^2+10 a fuction?

*October 29, 2012*

**chemistry**

Horxn = (4 mol)Hf(CO2(g)) + (6 mol)Hf(H2O(g)) - [(2 mol)Hf(C2H6(g)) + (7 mol)Hf(O2(g))] = -2909.8 kJ Solve for Hf(CO2(g)) in the above equation: Hf(CO2(g)) = [Horxn - (6 mol)Hf(H2O(g)) + (2 mol)Hf(C2H6(g)) + (7 mol)Hf(O2(g))] / (4 mol) = [(-2909.8 kJ) - (6 mol)(-241.8 kJ/mol...

*October 24, 2012*

**college alegebra**

√3x-2+√2x+5+1=0 Could this square root problem be solved by using a graphing TI-84 Plus calculator? If so, will you please tell me how to do it. Thanks

*October 20, 2012*

**Math**

Let boys=x and girls=x+16:- boys + girls =218 x + (x+16 =218 2x + 16 =218 x = (218-16)/2 = 101 Hence boys =101 and girls =101+16 Hope this helps

*October 13, 2012*

**Math**

Skanda wants to tack four posters on the bulletin board.he will tack the four corners of each poster,overlapping the sides of each poster a little. What is the least number os tacks that skanda can use?

*September 23, 2012*

**psy315**

a psychologist at a mental hospital was asked to determine whether there was any clear difference in the length of stay of patients with different categories of diagnosis. looking at the last 4 patients in each of the 3 major categories , the results in terms of weeks and stay...

*September 14, 2012*

**math**

A Ford Focus goes about 2 meters down the road for each revolution of its tires, which, when new, have treads about 1 centimeter thick. If it goes 80,000 km (50,000 mi) before its tread is gone, find the average thickness of tire lost durin each revolution. Compare this ...

*September 11, 2012*

**Physics**

A roller coaster starts from rest at the top of a steep incline. As it falls, should its velocity depend on how many riders are aboard? Use net work= change in kinetic energy to prove your answer.

*September 6, 2012*

**Physics**

A golf ball, dropped from 2 meters above a floor, rebounds to a height of 1.6 meters. What percentage of its energy of motion is lost in the collision with the floor?

*September 6, 2012*

**math**

Tap A fills a tube with cold water in 6 minutes. Tap B fills a tube with hot water in 8 minutes. If water is flowing out from taps A and B at the same time, how long does it take to fill the tubes?

*September 5, 2012*

**Math**

2X+2=8-X The answer I got was X=3. Is this correct?

*August 29, 2012*