Friday

March 6, 2015

March 6, 2015

Number of results: 21,886

**To Lashan and Anonymous**

Arrghh! Not only are you trying to mooch answers, you're also trying to fool us into thinking you are different people. If you post another question without explaining what you know and what you don't understand, it will be deleted and you'll be banned from posting on Jiskha.
*August 13, 2012 by Ms. Sue*

**college pre-calculus**

An investment of $4000 is deposited into an account in which interest is compounded monthly. Complete the table by filling in the amounts to which the investment grows at the indicated times. (Round your answers to the nearest cent.) r = 4%
*September 18, 2012 by mandy*

**world history**

6. After its conquest by Alexander the Great, the government of the Persian Empire A. was transformed into a democratic monarchy. B. became a democracy. C. was ruled by a traditional Macedonian monarchy. [D. was maintained more or less intact.]
*October 6, 2012 by jake*

**Biology**

Hi there, Internal membranes play important roles in protein production and processing except they do NOT a. anchor ribosomes in place. b. transport substances. c. contain the hereditary information for the protein. d. modify proteins to go into vesicles. Is it C?
*December 4, 2012 by Batman*

**simple physics.....**

You are holding onto a 100 kg basket of fish hanging over the side of a boat. What is the minimum force in Newtons you need to exert to keep the basket from falling back down into the ocean?
*March 12, 2013 by Anonymous*

**College Chemistry**

2NO(g)+O2(g)<->2NO2(g) has KP = 2.77 × 1011 at 25 °C. Suppose a mixture of the reactants is prepared at 25 °C by transferring 0.943 g of NO and 589 mL of O2 measured at 30.7 °C and 829 torr into a 1 L vessel. When the mixture comes to equilibrium, what will be the ...
*March 12, 2013 by Peter*

**GEOmetry(Special Coin Placement)**

Three coins are randomly placed into different positions on a 4×10 grid. The probability that no two coins are in the same row or column can be expressed as a/b where a and b are coprime positive integers. What is the sum of a+b?
*April 2, 2013 by please help me out!!*

**physics**

A basketball player is running at 5.10 m/s directly toward the basket when he jumps into the air to dunk the ball. He maintains his horizontal velocity. (a) What vertical velocity does he need to rise 0.800 meters above the floor
*June 23, 2013 by Deborah*

**English**

When the United States voted in 1845 to annex Texas as the 28th state, Mexico A.)agreed to move its border to accommodate U.S. need B.)broke off diplomatic relations *C.)moved troops into Texas Thank you.
*October 21, 2013 by Anonymous*

**Personal Finance**

Aaron wants to put $200.00 per month into an IRA account at 15% for four years. What is he solving for using his financial calculator? A. Present Value B. Future Value C. Interest Rate D. Payment
*October 25, 2013 by Sharon *

**Algebra**

Okay, I have a graph of a sq root function. I'm told to write the radical function for f(x). Some points on the line are (1,-2) and (5,0). I know you probably can't help me a whole lot, but if you can give me any insight into how to figure this problem out, I'd really ...
*March 11, 2014 by Student*

**physics**

A bomb of mass M at rest explodes into three pieces in the ratio 1 : 1 : 2. The smaller ones are thrown off in perpendicular directions with velocities 3 ms−1 and 4 ms−1. What is the velocity of the third piece after the explosion?
*April 5, 2014 by bharath*

**Personal Finance**

Aaron wants to put $200.00 per month into an IRA account at 15% for four years. What is he solving for using his financial calculator A. present value B. future value C. interest rate D. payment
*April 16, 2014 by Gabby*

**Math**

A full 355 mL can of Coke is leaking at a rate of 5mL per minute into an empty can. How long will it take for the two cans to have the same amount m of Coke? Is the equation 335+5m= something? I'm not sure
*September 24, 2014 by Coleson*

**science**

During the process of photosynthesis, plants capture the kinetic energy of moving photons and transform it into potential energy in the form of Select one: a. pyruvate. b. chemical bonds. c. stroma. d. thylakoid disks.
*October 5, 2014 by mike*

**planning & implementing for the environment**

Which of these factors is most likely to determine the total number of children you can take into your facility? A. Children's needs B.Physical space available C.program philosophy D.staff members skills B.
*October 20, 2014 by Amanda*

**PHYSICS NEED HELP ASAP**

A car traveling 16.0m/s crates into concrete embankment and steps in 0.08s. Calculate: the initial speed in mi/hr the average acceleration of the car during the collision in m/s^2 Please show all work than you
*December 19, 2014 by MARIE*

**NEED HELP ASAP PHYSICS**

A car traveling 16.0m/s crashes into concrete embankment and stops in 0.08s. Calculate: the initial speed in mi/hr the average acceleration of the car during the collision in m/s^2 Please show all work than you
*December 19, 2014 by MARIE*

**Chemistry **

Write a balanced Chem. Eq 1. Chlorine gas will react with aqueous sodium fluoride if 200J of energy is added and manganese is used as a catalyst. 2. Dinitrogen pentaoxide gas decomposes into its elemental parts.
*January 6, 2015 by Rachel*

**Science **

A male peacock displays his colorful tail feathers in order to 1) increase the success rate of asexual reproduction 2) increase the gestation period 3) release gametes into its surroundings 4) attract a mate I chose 4
*January 27, 2015 by Abby*

**English**

In which situation are you most likely to use the word tongue? a translating a book from German to English b writing an ad for a new business c carrying some groceries into your home d driving in a car to the store I say A
*February 3, 2015 by BUBBLES*

**fundamental concepts**

Which of the following activities is not designed for teaching parts and wholes? A. Magnetic numerals B. Dividing groups into smaller groups C. A lotto game called "What's Missing?" D. Cutting up a banana my answer I believe c.
*February 4, 2015 by Daniela*

**Chemistry re-post**

I took a look at this question to see if I copied it correctly, and it does NOT say how much of the solution was used. It does use mols as the unit. Dr. Bob, I am not sure what you mean by "decays into Argon." I realize that the 38 CL decays to Argon, but how would that work ...
*July 23, 2013 by Nancy *

**Grammar**

When writinng names of songs and albums which one do you capitalize and which do you underline? The song you put into quotation marks, the album, you underline. You capitalize the main words in both.
*January 23, 2007 by Mauri*

**Phyics**

Could you please check my work, I am not too sure what do. An airplane that flies at 100 km/h with a 10 km/h tailwind travels at 110 km/h relative to the ground. If it instead flies into a 10 km/h headwind, its groundspeed is : 110 km/h /2= 55 km/h
*August 30, 2007 by Soly*

**algebra**

Rewrite into standard form (0,5), m=-3/5. Write the equation of the line passing through each of the given pairs of points. Write the answer in slope-intercept form, where possible. (2,-3) and (2,4)
*December 8, 2007 by anonymous*

**Algebra**

Rewrite into standard form (0,5), m=-3/5. Write the equation of the line passing through each of the given pairs of points. Write the answer in slope-intercept form, where possible. (2,-3) and (2,4)
*December 9, 2007 by Becky*

**science equations**

a boy standing n a high cliff dives into the ocean below and strikes the water after 2.5 s. what is the boy's velocity when he hits the water? deltav=gxt
*January 24, 2008 by summer*

**math**

diana wants to make a 15ft. by 20ft. section of her yard into a garden. she will plant flowers in 2 of the garden 3 and vegetables in the rest of the garden. how many square feet of the vegetable garden will she have.
*February 4, 2008 by nisa*

**Chemistry**

I need to write this into its atomic symbol. the isotope with 7 protons and 8 neutrons in its nucleus. I don't really understand it the whole protons and neutrons thing so if you could clear that up for me also it would help. Thanks :D
*July 24, 2008 by Darcy*

**physics**

A rock is tossed straight up with a velocity of 37.1 m/s. When it returns, it falls into a hole 18.8 m deep. How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?
*October 7, 2008 by Deepa*

**Business Law**

While Mr And Mrs Lowell was on a cruiseship vactioning their cabin was broken into and valueables were stolen they were looked in the bathroom while this was happening Mr Lowell sufferd a heart at?
*July 13, 2009 by Anonymous*

**Chem**

You've just prepared a solution by transferring 20.0 g of glucose into a 1.0 - L volumetric flask, and adding water to the mark. Calculate the concentration of the glucose solution in terms of millimoles/Liter, mg/mL, and % (m/v).
*September 1, 2009 by Britt*

**math**

multiply 3 1/6 x 9/11 x 6/17 and write it in its simplest form would that make the answer 513/561? then to break it down into it simplist form it would be 171/187 correct?
*September 5, 2009 by sally j*

**algebra 1A**

translate into an algebraic expression. use x and y for variables. the sum of three times a number plus five times another number. the translation is. is any one of these correct y+3=8 or 3+8=8 please help. thanks
*September 17, 2009 by Lea*

**physics**

A ball is thrown vertically into the air and when it returns after an interval of 2 seconds it is caught. What is the acceleration of the ball after leaving the hand? I have no idea how to solve this!
*September 27, 2009 by Jake*

**Phys sci**

Which one of the following frequency can set the string into resonant vibration? If a guitar string has a fundamental frequency of 500Hz a)250Hz b)750Hz c)1500Hz d)1750Hz
*December 8, 2009 by Joanna*

**PHYSICS**

a 17 of model plane is flying at a horizontal speed of 14 m/s the plane goes into a dive and levels off 21 m closer to the earth what was the ammount of potentiomal energy lost in the dive
*January 6, 2010 by landon*

**math-4th grade**

a worker is usin boards to divide a rectangular animal pen into a row of 12 smaller goat pens. uhow many boards does the worker need?
*January 31, 2010 by alysha*

**Science**

If a ship is sailing with a constant speed of 30 m/s to the east and a cannonball is launched straight up into the air from the deck of the ship, why does the cannonball land back in the cannon and not in the ocean behind?
*February 10, 2010 by Lanell*

**chemisty**

I have to convert the following pressures into torr: 1. 2.48x10^-3atm 2. 4.75x10^6atm 3. 7.60x10^6 i have no idea how to convert it when there are scientific notations involved. please help =]]
*March 6, 2010 by bb*

**Chemistry**

I have to convert the following pressures into torr: 1. 2.48x10^-3atm 2. 4.75x10^6atm 3. 7.60x10^6 i have no idea how to convert it when there are scientific notations involved. please help =]]
*March 6, 2010 by bb*

**Integrated Science**

The sun converts matter to radiant energy at a rate of 1.4 x 10 to the 17th power kg per year, how much matter is converted into energy every second?
*March 18, 2010 by Carole*

**Calculus**

Resolve a 500-N force into two rectangular vector components such that the ratio of their magnitudes is 2:1. Calculate the angle between the greater component and the 500-N force.
*May 2, 2010 by Kayla*

**college**

Trace the memory system from stimuli into long-term memory. Discuss the features of each step and factors that enhance or impede information flow in each step of the process.
*May 22, 2010 by tricia*

**Physics at University**

The spring of the pressure gauge has a force constant of 2000N/m and the piston has a diameter of 3.00 cm .As the gauge is lowered into water, what change in depth causes the piston to move in by 0.55 cm?
*May 31, 2010 by Pena*

**math**

if naomi wants to accumulate 1,000,000 by investing money every year into her savings account at 3% for 30 years until retirement,how much does she need to deposit each year
*June 12, 2010 by darryl*

**Algebra**

Kate cut a 100-foot rope into two pieces. One piece was 5 feet longer than 4 times the length of the other. Find the length of each piece.
*August 26, 2010 by Jacob*

**PHYSICS ---HELP!**

The space shuttle releases a satellite into a circular orbit 700 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?
*October 11, 2010 by Jen*

**physics**

The space shuttle releases a satellite into a circular orbit 700 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?
*October 11, 2010 by angela*

**physics**

The space shuttle releases a satellite into a circular orbit 700 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs? V = m/s ??
*October 11, 2010 by angela*

**PHYSICS ---HELP!**

The space shuttle releases a satellite into a circular orbit 700 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?
*October 11, 2010 by lauren*

**Physics**

The space shuttle releases a satellite into a circular orbit 440 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?
*October 11, 2010 by Tatiana*

**Probability**

Four red and seven black beans are placed into a bag. If one of the beans is selected at random, determine the odds against the bean being red.
*October 12, 2010 by Liesl*

**chemm**

A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius
*November 2, 2010 by ally*

**11th grade**

a rock is dropped from a 20.0m bridge falls into the river below. a.)at whqat velocity does it strike the water? b.)how much time did the rock take to reach the water?
*December 12, 2010 by marissa*

**Calculus Optimization**

A model space shuttle is propelled into the air and is described by the equation y=(-x2/2e)+ex in 1000 ft, where y is its height in feet above the ground. What is the maximum height that the shuttle reaches?
*January 18, 2011 by jennifer*

**french**

Please help me by translating the following french terms into english: 1) le litchi 2)le bonbon 3)le ragout 4)l'epice 5)les accras 6)les matoutous 7)le blaff 8) le feroce 9)le lambi
*January 26, 2011 by Gabrielle*

**Physics**

An arrow is shot into the air at an angle of 58.3 above the horizontal with a speed of 21.1 m/s. (a) What are the x and y components of the velocity of the arrow 3.3 s after it leaves the bowstring? I found the x component to be 11.09 m/s, but I don't know how to find the y ...
*February 2, 2011 by Renee*

**phys**

To totally convert a given amount of mechanical energy into heat is Choose one answer. a. impossible. b. possible. c. impossible to answer without additional information.
*February 17, 2011 by Anonymous*

**geometry**

For that problem: A board that is 12 feet long must be cut into 2 pieces that have lengths in a ratio of 3 to 2. Find the lengths of the two pieces. when answering the question why was it 3/5=x/12? where did the 5 come from?
*February 27, 2011 by shannon*

**Chemistry**

A student titrates 0.100M KOH, potassium hydroxide, into 50.0ml of 0.10M HCOOH, formic acid (Ka=1.8 x 10^-4. What is the pH of the mixture after 25.0ml of the KOH has been added
*April 7, 2011 by Gina*

**Chemistry**

A student titrates 0.100M KOH, potassium hydroxide, into 50.0ml of 0.10M HCOOH, formic acid (Ka=1.8 x 10^-4. What is the pH of the mixture after 25.0ml of the KOH has been added
*April 7, 2011 by Gina*

**math**

Show how a 13 by 13 square can be decomposed into 11 non-overlapping squares whose side lengths are integers (with sides parallel to the sides of the big square), if the largest subsquare is 7 by 7.
*April 12, 2011 by haha*

**computers**

Write a 300- to 400-word paper that describes the distinctions of data and information and briefly explains the process a computer uses to convert data into information.
*June 10, 2011 by Anonymous*

**physics**

A BLOCK OF MASS 20KG MOVING WITH A SPEED OF 18 KM/H EXPLODES AND SPLITS INTO 2 PARTS.ONE PART OF MASS 15 KG COMES TO REST FIND THE VELOCITY OF SECOND PART?
*July 31, 2011 by Anonymous*

**chemistry**

There is a ball with a mass of 1000 lbs. It's turned into wire with a diameter of 3.12 x 10^-1 How long is the wire? This is my crazy chemistry teacher's idea of a test...and I don't even think there's a solution. HELP ME
*October 3, 2011 by Molly*

**Physics**

A 64kg driver gets into an empty taptap to start the day's work. The springs compress 1.9×10−2 m . What is the effective spring constant of the spring system in the taptap?
*October 12, 2011 by Eman*

**Science**

When a sound wave passes from air into a solid object, which of the following wave properties change? -frequency -wave speed -amplitude -wave length Can be more than one
*November 10, 2011 by Logan*

**physics**

when a 0.05kg bullet is fired into a block that is suspended by a long cord so that it can swing as a pendulum. if the block is displaced so that its centre of gravity rises by 0.10m,what was the speed of the bullet?
*December 20, 2011 by jenni*

**Math**

Ok so you're supposed to solve the system by method of substitution. And the problem is: -2/3x + y = 2 2x - 3y = 6 So i put y= 2/3x into the second equation which looks like: 2x - 3(2/3x + 2) = 6 and then 2x-2x-6=6 So like everything cancels out? So then what do you put as the...
*February 15, 2012 by Carrie*

**Chemistry**

The equlibrium constant K, for the reaction, H2 + CO2 <-> H20 + CO, is 4.2 at 1650 degrees C. Initially, 0.80 mol H2 and 0.80 mol CO2 are injected into a 5.0L flask. Calculate the concentration of each species at equilibrium.
*March 18, 2012 by Kristen*

**geometry**

A ball of diameter 20 cm fits exactly inside a cylindrical container. The maximum volume of liquid which can be poured into the cylindrical container when empty is ________ cm3. [π=3.14]
*April 4, 2012 by how do i start working on this problem *

**Physics**

Which doesn't describe motion? mass or position eg. The position of a golf ball standing still on a tee at 7:30 A.M. Sunday morning. or The mass of Voyager as it plunges into a black hole.
*October 22, 2012 by Lewis*

**physics**

An engine does 17700 J of work and rejects 6320 J of heat into a cold resevoir whose temperature is 283 K. What would be the smallest possible temperature of the hot resevoir?
*November 6, 2012 by Anonymous*

**science**

a planet has a radius of 5950 km and a value of g at the surface of 8 m/s2. If the planet decides to put a satellite into citcular orbit, what horizontal (orbital) speed must the satellite achieve?
*February 11, 2013 by limeandmango*

**Analytic Geometry - Circles and Areas**

Let R denote the circular region bounded by x^2+y^2 = 36. The lines x=4 and y=3 partition R into four regions R1, R2 ,R3 , and R4. Let [Ri] denote the area of region Ri. If [R1]>[R2]>[R3]>[R4] , then compute [R1]-[R2]-[R3]+[R4]. Could someone help me, I don't really ...
*April 3, 2013 by Knights*

**algebra1**

a baseball is hit into the air. the path of the ball can be described by the equation h=23t-5tsquared, where h is the height in meters, and t is the time in seconds. how high is the ball after 3 seconds?
*April 11, 2013 by tracy*

**Chem**

What is the molarity (M) of an HCl solution, 150 ml of which when treated with excess magnesium liberates 3.5 l of H2 gas measured at STP? I know molarity is Moles, volume, but how does magnesium come into play?
*April 17, 2013 by Johnie HELPPPPP*

**physical science**

A nail is driven into a board to a depth of 1.00 cm with one strike from the hammer. The hammer striking the nail hit it with a force of 200.00 Newtons. How much work was done?
*May 1, 2013 by kelli*

**physics**

A uniformly charged insulating rod of length 19.0 cm is bent into the shape of a semicircle. The rod has a total charge of −8.50 ìC. Find the electric potential at O, the centre of the semicircle.
*August 28, 2013 by Lily*

**physics**

A uniformly charged insulating rod of length 19.0 cm is bent into the shape of a semicircle. The rod has a total charge of −8.50 ìC. Find the electric potential at O, the centre of the semicircle.
*August 28, 2013 by Lily*

**Economics/Business**

Our large companies seem to be largely run by hired managers who work for salaries and who are not owner-entrepreneurs. How then do we get the profit motive into large companies?
*September 15, 2013 by Jonathan*

**math**

Long ago, people decided to divide the day into units called hours. They chose 24 as the number of hours in one day. Why is 24 a more convenient choice 23 or 25?
*September 19, 2013 by Shohanur*

**math**

Long ago, people decided to divide the day into units called hours. They chose 24 as the number of hours in one day. Why is 24 a more convenient choice 23 or 25?
*September 19, 2013 by Shohanur*

**annuities..math**

Anne Thorne deposits $100 at the end of each month into her savings account which pays 6% interest compounded monthly. How much will be in her account at the end of 2 ½ years?
*December 3, 2013 by Lynda*

**statistic**

For the following dataset, enter the data into a calculator and find the least square regression line, correlation coefficient, and coefficient of determination. step by step please X1 Y1 10 8.04 8 6.95 13 7.58 9 8.81 11 8.33 14 9.96 6 7.24 4 4.26 12 10.84 7 4.82 5 5.68
*December 10, 2013 by bowershe*

**physics**

A 2400 kg car moving at 11 m/s crashes into a tree and stops in 0.26 s. calculate the force the seat belt exerts on passenger in the car to bring him to a halt the mass of the passenger is 72 kg.
*March 22, 2014 by Mohanad*

**Math**

Tim deposits $10 every month into retirement account which averages 18% interest compounded monthly. How much will be in this account after 45 years? (The number of years from age 20 to 65).
*April 23, 2014 by Mai*

**Math**

A class us planning a party. A pizza restaurant cuts each pizza into 8 slices. There are 32 students. How many pizzas does the class need to order for each student to have a slice? Explain
*August 18, 2014 by Leona*

**Math**

A class is planning a party. A pizza restaurant cuts each pizza into 8 slices. There are 32 students. How many pizzas does the class need to order for each student to have a slice? Explain.
*September 8, 2014 by Maribel*

**5th grade math**

A small company packs 12 jars of jlly into each of 110 boxes to bring to the farmers market. how many jars of jelly does the company pack in all
*September 11, 2014 by Mythreyee*

**physics**

1.) An 8 g bullet is fired into a 9 kg cube of wood, which is at rest, and sticks in it. The cube is free to move and has a speed of 40 cm/sec after impact. Find the initial velocity of the bullet.
*September 20, 2014 by cami*

**physics**

Gravity is pulling downward on a 20.0kg block resting on a 15 degree incline. What is the magnitude of the force component parallel to the surface (hint: how to turn 20.0kg into force)?
*September 24, 2014 by Sandara*

**AP CALC**

A rectangle ABOD is inscribed into the region bounded by the x-axis, the y-axis and the graph y= cos2x. what is the greatest perimeter that such a rectangle can have? Please HELP. I greatly appreciate your help.
*November 18, 2014 by Anonymous*

**Science**

What is the total mass when you pour 100 g of vinegar into a flask and add 10 g of baking soda in a flask. Also what is the chemical formula for this. how can we change the formula so the experiment will be accurate. Thanks
*December 3, 2014 by Gayle*

**AlGEBRA**

Sara needs to buy some tuna. Each can costs .79 and she has a coupon for $2 off entire purchase, how many cans of tuna can she buy for less than $7.? (translate into inequality and solve)
*February 4, 2015 by sweet pea*

**word problem**

Ieda bakes 73 cupcakes and accidentally drops 5 of them. She divides them equally into 13 containers for a bake sale for the school band. How many cupcakes does Ieda have left?
*March 3, 2015 by none*

**English**

1. She poured water all over my painting and ruined it. (Can we use 'spoiled' instead of 'ruined'?) 2. boil (water changes into moist) 2-2. boil (water changes into moisture) (Which definition is right?) 3. He doesn't care about his family. He is not worried about his family. ...
*June 24, 2009 by John*

**Last news/english proofread**

A New Jersey Chemist convicted of poisoning her husband to keep him from divorcing her was sentenced to life in prison today. Titanle Li used thallium to poison her husband Xiaoye Wang in 2010. Thallium is a tasteless, highly deadly poison that is difficult to detect in lab ...
*September 30, 2013 by Blaze*

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