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March 29, 2015

March 29, 2015

Post a New Question | Current Questions

**Art 101 college**

Explain how Florence reflects the ideals of the dominant city-state and how some of the geographical, economical, social, and artistic forces shape this ideal. Use one example from Gardner’s Art through the Ages and one example from the Internet.
*Saturday, October 27, 2012 at 8:15pm*

**college math**

3.15 A bank branch located in a commercial district of a city has developed an improved process for A bank branch located in a commercial district of a city has developed an improved process for serving customers during the noon-to-1:00 p.m. lunch period. The waiting time, in ...
*Saturday, October 27, 2012 at 6:11pm*

**college algebra--Please help Reiny please**

You helped me with this question and this is what I got but my Professor says that each x and y intercept needs to have a coordinate. Where did I go wrong?? Can you help me? x^2+y^2+4x+2y-20=0 x^2+4x+4+y^2-2y+1=20+4+1 (x+2)^2+(y+1)^2=25--this is where you helped me. Then I ...
*Friday, October 26, 2012 at 9:29pm*

**math**

A class of college freshmen is composed of 110 students. Among these students, 75 are taking English, 52 are taking history, 50 are taking math, 33 are taking English and history, 30 are taking English and Math, 22 are taking History and Math, and 13 are taking all three ...
*Friday, October 26, 2012 at 6:55pm*

**math**

A class of college freshmen is composed of 110 students. Among these students, 75 are taking English, 52 are taking history, 50 are taking math, 33 are taking English and history, 30 are taking English and Math, 22 are taking History and Math, and 13 are taking all three ...
*Friday, October 26, 2012 at 6:17pm*

**college algebra**

write the equation of the circle in standard form find the center radius, intercept and graph circle x^2 +y^2+8x+2y+8=0
*Friday, October 26, 2012 at 5:36pm*

**college algebra**

for the given equation list the intercepts and test for symmetry y = x^3 -512
*Friday, October 26, 2012 at 5:31pm*

**college calc**

Approximate the square root of 64.3, y=x^(1/2). Starting point is the square root of 64.
*Friday, October 26, 2012 at 11:28am*

**college algebra**

Write the equation of the circle in standard form. Find the center, radius and intercepts. x^2 + y^2 + 4x + 2y - 20 = 0
*Thursday, October 25, 2012 at 10:31pm*

**college algebra**

y=3x/x^2 + 81 for the given equation, list the intercepts and test for symmetry.
*Thursday, October 25, 2012 at 10:27pm*

**college chemistry**

If KHP sample #1 requires 27.30 mL of NaOH solution to reach an endpoint, what volume should be required for samples #2 and #3?
*Thursday, October 25, 2012 at 3:26pm*

**College Chemistry**

What volume of the solution in 5a would be necessary to react completely with 23.00mL of 0.549M NH3 according to the equation: NiSO4+6NH3 -> [Ni(NH3)6]SO4 The molarity of ta is 1.667 x 10^-4M
*Thursday, October 25, 2012 at 1:40am*

**College Chemistry**

The specific Heat of gold is 0.128 J/g degrees Celsius. How much heat would be needed to warm 250.0g of gold from 25.0 degrees Celsius to 100.0 degrees Celsius
*Thursday, October 25, 2012 at 12:52am*

**College Chemistry**

Calculate the number of Joules released when 75.0 g of water are cooled from 100.0 degrees Celsius to 27.5 degrees Celsius
*Thursday, October 25, 2012 at 12:47am*

**College Chemistry**

Calculate the heat in joules needed to warm 225g of water from 88.0 degrees Celsius to its boiling point 100.0 degrees Celsius
*Wednesday, October 24, 2012 at 11:35pm*

**physics college**

A dog sled is pulled at an angle of 30 degrees with the horizon using a tension of 450N. If the sled has a mass of 50kg, then find the recoil, forward force and acceleration (if any).
*Wednesday, October 24, 2012 at 10:13pm*

**SAT Essay **

Assignment: Is there such a thing as success without sacrifice? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experience, or observations. Essay: It is very ...
*Wednesday, October 24, 2012 at 9:36pm*

**prob and stats**

11. Assume that the population of heights of male college students is approximately normally distributed with mean m of 72.15 inches and standard deviation s of 6.39 inches. A random sample of 96 heights is obtained. Show all work. (A) Find (B) Find the mean and standard error...
*Wednesday, October 24, 2012 at 3:29pm*

**COLLEGE MATH**

ANDY PUT DOWN 1/14 INCH THICK SUBFLOORING.nEXT HE NAILED DOWN 3/16 INCH THICK UNDERLAY.ON TOP OF THAT , HE NAILED DOWN 4/14 INCH THICK HARDWOOD FLOORING.hAW THICK WAS THE RESULT?
*Wednesday, October 24, 2012 at 1:56pm*

**physics college**

A rocket booster fires in space with a force of 500N and moves the 10kg satellite from rest to motion in 2.1 seconds. Find the acceleration? What is the final speed of the satellite?
*Tuesday, October 23, 2012 at 11:30pm*

**physics college**

A lamp has a mass of 10kg and is supported by two wires that make an angle of 35 degrees between them. Find the tension in each wire?
*Tuesday, October 23, 2012 at 11:28pm*

**college chemistry**

A sample of helium occupies 1521 mL at 719 mmHg. Assume that the temperature is held constant and determine a) the volume of the helium at mmHg. b)the pressure, in mmHg, if the volume is changed to 315mL
*Tuesday, October 23, 2012 at 11:10pm*

**college chemistry**

How many gram of Zn would be necessary to produce 534 grams of Fe by the sequence of reactions shown below? Step 1 Zn + HCl ==> ZnCl2 + H2 Step 2 Fe2O3 + H2 ==> Fe + H2O
*Tuesday, October 23, 2012 at 6:19pm*

**pltw**

How do you envision applying your sketching skills in college?
*Tuesday, October 23, 2012 at 6:03pm*

**I.E.D**

How do you envision applying your sketching skills in college?
*Tuesday, October 23, 2012 at 5:53pm*

**stats**

A researcher hypothesizes that a new herbal supplement improves memory. A sample of n = 25 college students is obtained and each student takes the supplement daily for six weeks. At the end of the 6-week period, each student is given a standardized memory test, and the average...
*Tuesday, October 23, 2012 at 4:46pm*

**NEED HELP ASAP, college math**

Find the future value! Periodic payment: $650.00 Payment interval: every month Term: 19 years, 2 months Interest rate: 4.75% Compound frequency: monthly
*Monday, October 22, 2012 at 11:17pm*

**college math**

Calculate the future value of an ordinary annuity consisting of annual payments of $1,000 for 4 years if the payments earn 10.70% compounded annually for the first 2 years and 9% compounded annually for the last 2 years. For full marks your answer(s) should be rounded to the ...
*Monday, October 22, 2012 at 11:04pm*

**college percentages **

One number exceeds another by 24. The sum of the numbers are 58. What are the numbers? please help!
*Monday, October 22, 2012 at 10:46pm*

**college math please help**

What do these mean? They are supposed to represent things but I don't understand them. C=2╥r for r, S=P+Prt for t, and A=2lw+2lh+2wh for h
*Monday, October 22, 2012 at 10:40pm*

**college math word problem**

A new car worth 45K is depreciating in value by 5K per year. How can I write a formula that models the cars' value,y, in dollars, after x years?Then using the formula determine after how many years the cars' value will be 9K.
*Monday, October 22, 2012 at 10:39pm*

**College math**

What do these mean? They are supposed to represent things but I don't understand them. C=2╥r for r, S=P+Prt for t, and A=2lw+2lh+2wh for h
*Monday, October 22, 2012 at 10:24pm*

**College Algebra**

The concentration C of a certain drug in a patient's bloodstream t minutes after injection is given by C(t)=50t/t^2+25. Determine the time at which the concentration is highest. Round your answer to the nearest tenth of a minute.
*Monday, October 22, 2012 at 3:18pm*

**College chemistry**

When your body metabolizes amino acids, one of the final end products is urea, a water so liable compound that is removed from the body as urine. Why is urea soluble in water, when hexamide, a related compound is not?
*Monday, October 22, 2012 at 2:01am*

**College chemistry**

When your body metabolizes amino acids, one of the final end products is urea, a water so liable compound that is removed from the body as urine. Why is urea soluble in water, when hexamide, a related compound is not?
*Monday, October 22, 2012 at 2:01am*

**college physics**

A student moves a box of books by attaching a rope to the box and pulling with a force of 80.0 N at angle of 45o. The box of books has a mass of 25.0 kg and the coefficient of kinetic friction between the bottom of the box and the sidewalk is 0.43. Find the acceleration of the...
*Sunday, October 21, 2012 at 8:26pm*

**college statistic**

there are 10 candidates to fill 3 spots. how many teams can be formed
*Sunday, October 21, 2012 at 4:11pm*

**College Chemistry**

Two moles of Mg and five moles of O2 are placed in a reaction vessel, and then the Mg is ignited to produce Mg (F.W.= 40.31 g/mole). What is the actual mole ratio, the calculated mole ratio, how many moles of MgO are formed, and what is the weight of MgO formed?
*Sunday, October 21, 2012 at 3:30pm*

**College Chemistry**

Using the molar volume (STP) or the ideal gas law equation, determine the molar mass,g/mole, of each of the following. A: 11.2g of a gas that has a volume of 1.50Lat STP? B: .0710g of a gas that has a volume 825ml at 1 atm
*Sunday, October 21, 2012 at 2:41pm*

**College Chemistry**

A 14.0 g sample of Krypton has a temperature of 25C at 625mm Hg. What is the volume, in Milliliters, of the krypton?
*Sunday, October 21, 2012 at 2:35pm*

**College Alegbra**

An arrow is launched upward with a velocity of 54 feet per second from the top of a 75 foot building. What is the maximum height attained by the arrow in feet?
*Saturday, October 20, 2012 at 9:19pm*

**College Physics**

A uniform horizontal rod of mass M and length l rotates with angular velocity w (omega) about a vertical axis through its center. Attached to each end of the rod is a small mass m. Determine the angular momentum of the system about the axis. Write you're answer in terms of...
*Saturday, October 20, 2012 at 8:55pm*

**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
*Saturday, October 20, 2012 at 9:20am*

**College Algebra**

The half-life of a radioactive material is about 34.6 years. How much of a 1-gram sample of the material is left after 30 years?
*Saturday, October 20, 2012 at 12:21am*

**College Math**

Find the area of a rectangle if three of its corners are (-3.7, -3.1), (1.2, -3.1), and (1.2, 5.3). Hint: find the 4th corner first.
*Friday, October 19, 2012 at 12:08pm*

**College Math**

Using EZgraph, graph the following equations; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the graph. 3. 4.9x – 7.2y = 2.3 4. 2x = -8 5. 3.7x + 4.2y = 5.03
*Friday, October 19, 2012 at 12:04pm*

**College Math**

Mary buys $32,000 worth of gold, and sells it a year later for $41,000. If she is required to pay 23% capital gains tax on her profit, how much tax will she pay?
*Friday, October 19, 2012 at 12:02pm*

**College Math**

Find an equation in slope-intercept form passing through the points (-4.7, 16.3) and (-2.9, 16.3). Hint: first find the slope!
*Friday, October 19, 2012 at 12:01pm*

**College Math**

A temperature of 38 degrees Fahrenheit (F) is equivalent to 276.483 degrees Kelvin (K), while a temperature of 75 degrees F is equivalent to 297.039 degrees K. (a) Using the algebra methods from this class, find the equation converting Kelvin temperature to Fahrenheit.(Hint: ...
*Friday, October 19, 2012 at 11:57am*

**College Math**

A clarinet factory wants to maximize profits. They can produce 250 clarinets per week at a cost of $300 per clarinet, and sell them for $1000 per clarinet. And, they can produce 350 clarinets per week at a cost of $275 per clarinet, and sell them for $900 each. How much profit...
*Friday, October 19, 2012 at 11:41am*

**College Math**

Find the area of a rectangle if three of its corners are (-3.7, -3.1), (1.2, -3.1), and (1.2, 5.3). Hint: find the 4th corner first.
*Friday, October 19, 2012 at 11:40am*

**Question regarding career options**

I have a few questions about my possible future! I plan on majoring in sports medicine and nutrition. Id also like to obtain my personal training degree while in college. I plan on one day also having my own gym franchise or business. As you can see, I LOVE fitness:) Would ...
*Thursday, October 18, 2012 at 6:07pm*

**College Calc**

Problem: y=sqrtx ^1/x. Find DY/DX. ln(f(x))=lnx^1/2x or lnx to the 1/2x 1/2x lnx product rule (1/4x^2)(lnx)+(1/x)(1/2x) is the product rule correct? What do i do after this product rule?
*Thursday, October 18, 2012 at 12:28pm*

**College Physics**

13. What is the magnitude of the gravitational force that acts on two particles? Assume that particle 1 (m1) is 12 kg and particle 2 (m2) is 25 kg, they are both separated by a distance of 1.2m
*Wednesday, October 17, 2012 at 5:50pm*

**College Discrete **

An urn contains n > 0 white balls and m > 0 black balls. Consider the experiment where two balls are drawn without replacement. What is the probability that the balls are of the same color? What is the probability of this event, if the balls are drawn with replacement? ...
*Tuesday, October 16, 2012 at 7:28pm*

**College Algebra**

Perform the indicated operation and simplify if possible. Assume any factors you cancel are not zero. s/(s^2-5s-24)-4/(s+3)
*Tuesday, October 16, 2012 at 1:54am*

**College algebra**

What is the domain for X³+2X²-9X-18
*Monday, October 15, 2012 at 9:08pm*

**College Algebra**

A piling supporting a bridge sits so that 1/4 of the piling is in the sand, 150 feet is in the water, and 3/5 of the piling is in the air. What is the total height of the piling?
*Monday, October 15, 2012 at 9:01pm*

**college orgo**

calculate how to make 10 mL of 15:85 ethyl acetate:hexane solution from 2 mL of 5:95 ethyl acetate:hexane, using pure hexane and pure ethyl acetate.
*Monday, October 15, 2012 at 6:53pm*

**College Algebra**

The campus of a college has plans to construct a rectangular parking lot on land bordered on one side by a highway. There are 720 feet of fencing available to fence the other three sides. Let x represent the length of each of the two parallel sides of fencing. a) Express the ...
*Monday, October 15, 2012 at 6:10pm*

**College Chemistry**

We will calculate the amount of acid to use in each titration. Assume that you are using 0.0512 M NaOH(aq). A good volume of NaOH(aq) to use per titration is 15mL. From this molarity and volume, the moles of NaOH can be calculated. Since the unknown acid is monoprotic, this ...
*Monday, October 15, 2012 at 5:34pm*

**college chemistry**

Please be specific! Briefly explain whether each if the following procedural errors would result in a high, low, or an unchanged calculated mass of Ca2+ in the analyzed tablet. a)a student had difficulty decanting the supernatant solution from the test tubes in step 9, causing...
*Monday, October 15, 2012 at 4:37pm*

**College Chem**

The density of the Earth is about 3.5g/cubic centimeters. If the Earth has a radius of 1.126 by 10 (to the seventh power) meters, what is its mass? (hint: volume= 4(pie)r(to the third power)/3; 1 meter=100 centimeters
*Sunday, October 14, 2012 at 10:32pm*

**psychology**

Imagine that Rasmussen College has asked the psychology department to research the study habits of its students
*Sunday, October 14, 2012 at 10:08pm*

**College Chemistry**

calculate the theortetical percentage of water for the following hydrates. Calcium nitrate tetrahydrate Ca(No3)2 X 4H2O
*Sunday, October 14, 2012 at 9:00pm*

**College Chemistry**

Assuming that Ka is 1.85 *10-5 for acetic acid, calculate the pH at one-half the equivalence point and at the equivalence point for titration of 50mL of 0.100M acetic acid with 0.100M NaOH.
*Sunday, October 14, 2012 at 9:29am*

**college algebra**

a man left 1\2 of his estate to his wife, 1\6 to his daughter, and the remainder an amount of $15,000, to his son. How large was the entire estate?
*Sunday, October 14, 2012 at 6:52am*

**college math **

I'm trying to find why the linear function f(-x)=x√x^2+2 is negative when it should be neither. why are √'s not negatives?!?!?! Is it because √x can't cross over the y axis because √x can't be negative? Then why is it that the x on the ...
*Sunday, October 14, 2012 at 12:50am*

**City College**

Galileo is riding on top of a horse that is gallop- ing at 11 ft/s due east. A minute into his ride, Galileo pulls a key out of his pocket, and holds it over the side of the horse. When he lets go, the key falls 3.0 ft vertically to the ground. a). How far has the horse ...
*Saturday, October 13, 2012 at 8:31pm*

**Oakton College**

How is dividing a polynomial by a binomial similar to or different from the long division you learned in elementary school? Can understanding how to do one kind of division help you with understanding the other kind? What are some examples from real life in which you might use...
*Saturday, October 13, 2012 at 1:09pm*

**Statistics (Math)**

A government report looked at the amount borrowed for college by students who graduated in 2000 and had taken out student loans. The mean amount was = $ 17 , 776 and the standard deviation was s = $12,034. The quartiles were Q 1 = $9900, M = $15,532, and Q 3 = $22,500. The ...
*Saturday, October 13, 2012 at 3:27am*

**English1C**

How to write a fallacy essay . Write purpose of the article including name, title, author, and say if you think the article is strong or not . We live in a polarizing society, so perhaps it’s inevitable that our experience of inequality should be polarized, too. Josh ...
*Friday, October 12, 2012 at 7:00am*

**college geometry**

if triangle mnp approximate triangle srt with proportionality factor k, show that if ma and sb are altitudes of the given triangles, then ma = ksb in
*Thursday, October 11, 2012 at 10:47pm*

**Math**

Hudson is already 40 miles away from home on his drive back to college. He is driving 65 mi/hr. Write an equation that models the total distance d travelled after hours h. What is the graph of the equation. When Phil started his new job, he owed the company $65 for his ...
*Thursday, October 11, 2012 at 9:26pm*

**College Math**

Simplify the algebraic expression 3z3 – 5x2 + 2 – 4y2 + 6x2 – 4z3 – 7y + 12 – 2x and evaluate it for x = -2, y = -3, z = -4. Identify the variables, constants, and coefficients in the simplified expression.
*Thursday, October 11, 2012 at 2:25pm*

**College Math**

Simplify the algebraic expression 3xz + 4xy – 2yz + xy + 5yz – 9xz and evaluate it for x = 3, y = -2, z = -5. Identify the variables, constants, and coefficients in the simplified expression.
*Thursday, October 11, 2012 at 2:25pm*

**College Math**

In a certain triangle the measure of one angle is triple the measure of a second angle but is 110 degrees less than the measure of the third angle. [The sum of the measures of three interior angles of a triangle is always 180 degrees.] What is the measure of each angle?
*Thursday, October 11, 2012 at 2:21pm*

**College physics - Center of mass**

College Physics- Center of Mass? The objects in the figure below are constructed of uniform wire bent into the shapes shown (Figure 1) . Each peice has a length of 0.15 . There are two objects that we need to figure out the x- and y-coordinates of the center of mass of the ...
*Wednesday, October 10, 2012 at 11:39pm*

**College Physics**

College Physics- Inertia? Find the moment of inertia about each of the following axes for a rod that is 0.300 in diameter and 1.60 long, with a mass of 5.00×10−2 . How do you find this ? I know how to find the perpendicular and end . but this? About an axis along ...
*Wednesday, October 10, 2012 at 11:39pm*

**College Physics**

A 0.35 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. The string makes an angle of 20° with the horizontal. Determine the speed of the stone. I've tried tan 20= gr/v^2 = (9.8)(.8)/v^2 = 4.7 m/s and that's not the correct answer (online ...
*Wednesday, October 10, 2012 at 9:40pm*

**English**

Find the word that means the same or almost in parenthesis in this story A range of factors (Motivated) immigrants to leave their homelands to come to America. Many sought to escape poverty or prejudice. Some wanted to follow dreams, such as promises of jobs, safe homes, or ...
*Wednesday, October 10, 2012 at 8:25pm*

**Statistics: Regression**

The June 1997 issue of Management Accounting gave the following rule for predicting your current salary if you are a managerial accountant. Take $31,865. Next, add $20,811 if you are top management, add $3604 if you are senior management, or subtract $11,419 if you are entry ...
*Wednesday, October 10, 2012 at 5:55pm*

**math**

If you borrow $15,000 from your dad for college and you agree to pay him $25,000 back at 8% compound interest per year. How many years do you think you have to do this? In other words, given the amounts and the interest rate, what is the number of years?
*Tuesday, October 9, 2012 at 10:39pm*

**college physics **

air flows through a main duct at a mass flow rate of 4kg/s the main duct enters a junction that splits into two branch ducts one with a cross section of 20cm x 30cm and one with a cross section og 40cm x 60cm if the mass flow rate in the large branch is 2.8kg/s what is the ...
*Tuesday, October 9, 2012 at 4:58pm*

**College US History**

Why did Americans demand written constitutions to define and protect rights?
*Tuesday, October 9, 2012 at 2:06am*

**College Physics**

A block weighing 70.0 N rests on a plane inclined at 25.0° to the horizontal. A force F is applied to the object at 50.0° to the horizontal, pushing it upward on the plane. The coefficients of static and kinetic friction between the block and the plane are, ...
*Tuesday, October 9, 2012 at 1:56am*

**College Physics **

A rifle bullet with a mass of 17.5 g traveling toward the right at 293 m/s strikes a large bag of sand and penetrates it to a depth of 23.6 cm. Determine the magnitude and direction of the friction force (assumed constant) that acts on the bullet.
*Tuesday, October 9, 2012 at 1:29am*

**college math**

ok this is the last question i need help on. Abigail just received an inheritance from her grandfather's estate. She will be entering college in 1 year and is expecting to need $3,000, $5,000, $4,000, and $4,500 respectively at the beginning of each of the 4 consecutive ...
*Monday, October 8, 2012 at 10:56pm*

**College Physics**

Okay so the acceleration g on this planet X is 15 m/s^2 I have solved for all answers but this one. How long would it take the object to reach a height of 14.1 ? For an object thrown upward there are two times it would be at any hieght. Give the going up answer, a comma, and ...
*Monday, October 8, 2012 at 10:42pm*

**college math**

Raisel borrowed money from Irlene and agreed to pay back $400 today and $300 in 5 years. If Raisel has a lot of money available now and wants to pay back the loan today, how much money would she have to pay Irlene if the loan was at 6.75% compounded quarterly? For full marks ...
*Monday, October 8, 2012 at 10:38pm*

**college chemistry**

a student determined the Ca^2+ ion content of a 100mL sample of calcium-fortified orange juice. After adding 2.0M HCl solution to the sample, the student filtered the juice to remove the pulp and other particulate matter. Then the tudent added Na2CO3 solution to precipitate ...
*Monday, October 8, 2012 at 9:37pm*

**college math**

1. Rebecka borrowed $500, $5,000, $3,500, and $2,000 from her dad on September 1 of each of four successive years for college expenses. Rebecka and her dad agreed to a loan at the rate of 3.50% compounded monthly. If it is now 1 year from the last day that she borrowed money, ...
*Monday, October 8, 2012 at 9:29pm*

**college chemistry**

Mg and O lab how will the relative number of moles of mg and o be affected if the following procedural errors are made? a)crucible is not brought to constant mass before the Mg is added. b)water is not added after the first heating of Mg, and the entire solid in the crucible ...
*Monday, October 8, 2012 at 9:05pm*

**college chem**

Mg and O lab how will the relative number of moles of mg and o be affected if the following procedural errors are made? a)crucible is not brought to constant mass before the Mg is added. b)water is not added after the first heating of Mg, and the entire solid in the crucible ...
*Monday, October 8, 2012 at 9:03pm*

**college stats**

A study wants to examine the relationship between student anxiety for an exam and the number of hours studied. The data is as follows: Student Anxiety Scores Study Hours 5 1 10 6 5 2 11 8 12 5 4 1 3 4 2 6 6 5 1 2 Why is a correlation the most appropriate statistic? What is the...
*Monday, October 8, 2012 at 10:56am*

**College Algebra**

The ratio of the surface area of a solid cube to its volume is 4 to 1. The diagonal of the cube is?
*Monday, October 8, 2012 at 10:36am*

**Chem II/College**

Using the Clausius Clapeyron equation determine the vapor pressure of water at 50.0 degrees C. The molar heat of vaporization of water is 40.7 kJ/mol. How do you solve this?
*Sunday, October 7, 2012 at 5:33pm*

**College Math Probability**

Let 1 <= k <= p−1, where p is prime. Show that p choose k is a multiple of p. What if p is not prime? I think here when we expand p choose k and then input few prime numbers then we always get a multiple of p . And same with when p is not prime.
*Sunday, October 7, 2012 at 1:32am*

**College Physics**

Suppose the Eskimo is pushing the same 50.0-kg sled across level terrain with a force of 51.5 N. If he does 3.85 102 J of work on the sled while exerting the force horizontally, through what distance must he have pushed it?
*Saturday, October 6, 2012 at 9:46pm*

**College Physics**

A ball of mass 620 g hangs from a spring whose stiffness is 195 newtons per meter. A string is attached to the ball and you are pulling the string to the right, so that the ball hangs motionless, as shown in the figure. In this situation the spring is stretched, and its length...
*Friday, October 5, 2012 at 9:40pm*

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