Tuesday

October 13, 2015
Total # Posts: 107

**physics**

One cubic centimetre (1.0 cm3) of water has a mass of 1.0 × 10−3 kg. (a) Determine the mass of 1.0 litre of water. Assuming that biological substances are 98% water, estimate the masses of (b) a cell with a diameter of 1.0 μm, (c) a human kidney, and (d) a fly...
*September 11, 2015*

**chemistry**

An experiment was conducted in which many pieces of data were collected. Considering all of the data, the limiting number of significant figures in the experiment was 3 significant figures. One of the values needed in these calculations was the barometric pressure. It was ...
*September 9, 2015*

**maths**

a person left a property of 30000 heritage is divided into his 4 sons and 3 daughters such that each daughter get half of the sons share . a loan of 8000 also to be paid. find the share of each.
*September 3, 2015*

**math**

In a class election,the votes of the two candidates were in the ratio 4:5. If there were 45 students in the class, how many did each get?
*July 27, 2015*

**maths**

plz solve according to sequence and series pattern a man was trying to swim to a buoy placed at a distance of 200m out in the sea. it took him 1 min to swim 20m. then a wave pushed him back 10m and he rested for about 1min before swimming again. he continued in his way for the...
*January 10, 2015*

**physics**

work done = mgh 3410 = 28.9 *10*h h = 3410/(289) h = 11.79m
*January 10, 2015*

**maths-6th grade**

plz solve according to sequence and series pattern a man was trying to swim to a buoy placed at a distance of 200m out in the sea. it took him 1 min to swim 20m. then a wave pushed him back 10m and he rested for about 1min before swimming again. he continued in his way for the...
*January 10, 2015*

**maths 6th grade**

actuallu reiny didnt solve according to sequence and series pattern---he used line equation but i want this answer according to the sequence and series pattern
*January 10, 2015*

**maths 6th grade**

a man was trying to swim to a buoy placed at a distance of 200m out in the sea. it took him 1 min to swim 20m. then a wave pushed him back 10m and he rested for about 1min before swimming again. he continued in his way for the rest of their journey. how long would it take the ...
*January 10, 2015*

**maths**

a man was trying to swim to a buoy placed at a distance of 200m out in the sea. it took him 1 min to swim 20m. then a wave pushed him back 10m and he rested for about 1min before swimming again. he continued in his way for the rest of their journey. how long would it take the ...
*January 10, 2015*

**Math (calculus)**

first find dy/dx dy/dx = 6x^2 - 4 then dy /dx for x = 1 dy/dx = 6(1)^2 - 4 dy/dx = 2 then apply chain rule dy/dt = dy/dx * dx/dt dy/dt = 2 * 4 dy/dt = 8
*January 10, 2015*

**maths**

the minute hand of a clock is 9cm long. the hour hand clock is 2/3 times longer than the minute clock. how much more distance will minute hand clock move than hour clock in 1 hour?
*December 9, 2014*

**matha**

the minute hand of a clock is 9m long. the hour hand clock is 2/3 times longer than the minute clock. how much more distance will minute hand clock more than hour clock in 1 hour/
*December 9, 2014*

**Chemistry**

I'm sorry I confused the questions its What is the final concentration if 64.36 grams of HCl (MW: 36.46) is dissolved in 8.54 ml of solution
*April 25, 2014*

**Chemistry**

What is the final concentration if 27.08 (MW: 36.46) dissolved in 55.51 ml?
*April 25, 2014*

**trigonometry**

22.115
*January 6, 2014*

**math words problem**

60
*December 12, 2013*

**writing**

On Dying is a lesson on how to live Not sure if this right, but two for you to look at. My Thesis statement. Please check. Thanks again! 1. Although death awaits us all, there is a lesson to all before we die. 2.This is a part of life that everyone becomes aware of sooner or ...
*April 16, 2013*

**writing**

although death awaits us all, there is a lesson before dying.
*April 16, 2013*

**writing**

Hello, could someone please look over my English/writing assignment. Any input will help. Not finish still working on end. THANKS A Gift of dying is a Lesson in Living “The truth is once you learn how to die, you learn how to live.” (Albom, 1997, pg. 82). The poem &#...
*April 16, 2013*

**grammar**

Louis was a scoundrel __________ everyone distrusted.
*March 8, 2013*

**Spanish**

enfermera
*February 4, 2013*

**chemistry**

What will be the total mass of a 73.3 gram flask and its contents if it contains 20.1 mL of concentrated sulfuric acid with density 1.84 gram per mL?
*October 28, 2012*

**math**

what two number are exactly 9 unit segment from 2 on a number line.
*August 27, 2012*

**math**

i figured it out.
*January 25, 2012*

**math**

f(x) = 4x^2 − x + 3, find f(a+h) I have 4a^2+8ah+4h^2-a-h+3 Is that right so far? and what do I do after that?
*January 25, 2012*

**8th grade Physical Science**

zero because potential energy can be calculate if object attaining some height
*January 19, 2012*

**college chemistry**

Hydrogen gas is produced when zinc reacts with sulfuric acid: Zn(s)+H_2SO_4(aq)---ZnSO_4(aq)+H_2(g) If 160 mL of wet H_2 is collected over water at 24 Celsius and a barometric pressure of 739 torr, how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 ...
*November 20, 2011*

**physics**

-4.00=-4.90m/s^2(t)^2 -4.00/-4.90=t^2
*September 26, 2011*

**Physics**

The coefficient of static friction between the 3.00 -kg crate and the 35 degree incline is .300. What minimum force must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline.
*September 26, 2011*

**3rd grade math**

How to write 3,200 in two ways
*September 11, 2011*

**physics**

An object is acted by 3 coplanar forces:30 newton to the north, 20 in the direction S20degrees E and 25 newton in a direction W20degrees S.Find the resultant
*April 5, 2011*

**science**

A ship sailed 15 km north, then 20km east followed by 10km south. Find its displacement from its starting point
*April 5, 2011*

**writing **

Bill should instruct or snd out a memo informing the staff about what the manager's said
*April 5, 2011*

**chemistry**

How many formula units is a 125.8g of Nacl
*November 8, 2010*

**Finance**

Assume AirJet Best Parts has also a preferred stock issue. The most recent dividend per share paid on the stock was also $1.50, the same as the common stock. Which one would you think has a higher price, the preferred stock or the current stock?
*October 8, 2010*

**Finance**

What coupon rate should AirJet Best Parts set on its new bonds to sell them at par value?
*October 8, 2010*

**physiology**

what is the relatioship between electrical activity and muscle force produced ?
*October 3, 2010*

**english**

c,c,b,a,a,c,a,b,b,b,a,a,d,b,b,c,c,c,b,a,b,a,d,a,c,b,c,d,a,c
*July 27, 2010*

**Maths**

Hi, I have to produce a sketch of a line that passes through the points (4,3) and (10,0), i have already worked its gradient out to be -0.5 and its y - intercepts as 5. For some reason i am having a mental block on the next bit! I need to add the line y = 6 to the sketch and ...
*July 12, 2010*

**CHEM**

Calcium nitrate will react with ammonium chloride at slightly elevated temperatures, as represented in the equation Ca(NO3)2(s) + 2NH4Cl(s) ---> 2N2O(g) + CaCl2(s) + 4H2O(g) What is the maximum volume of N2O at STP that could be produced using a 6.80-mol sample of each ...
*June 21, 2010*

**english**

c,c,b,a,a,c,a,b,b,b,a,a,d,b,b,c,c,b,a,b,a,d,a,c.b,c,d,a,c
*February 26, 2010*

**english**

1 - c 2 - c 3 - b 4 - a 5 - a 6 - c 7 - a 8 - b 9 - b 10- b 11- a 12- a 13- d 14- b 15- b 16- c 17- c 18- b 19- a 20- b 21- a 22- d 23- a 24- c 25- b 26- c 27- d 28- a 30- c
*February 26, 2010*

**math **

suppose you add 8 to a number, then multiply by -4, and then subtract 5. IF the result is 10 what is the starting number?
*December 15, 2009*

**math**

before the year end sale one used car was priced at 8,925. During the sale the car was marked down to 7,586.25. By what percent was the car marked down?
*December 15, 2009*

**math **

suppose you invest $525 for five years at an annual interest rate of 4.2%. What is your balance at the end of five years rounded to the nearest cent?
*December 15, 2009*

**6th grade**

the answer is 6.5 but, i think the diagram is showing your work. hope this helps :)
*October 25, 2009*

**College Physics**

A simple circuit is made of a power source, a rheostat and an ohmic resistor. The potential difference across the resistor is initially 5.0 ± 0.1 V. A good lab student measures the current across the resistor to be 1.65 ± 5 mA. a)If the student increases the ...
*February 10, 2009*

**College Physics**

Common light bulbs have a mental filament made of tungsten and when a current passes through it, it radiates visible light, as well as heat. If initially the filament's resistance is 2.45 Ω (6%) at 20 degrees Celsius and the temperature coefficient of resistivity &#...
*February 10, 2009*

**home economics**

what are fats that come from plants that are liquid at room tempurature
*December 9, 2008*

**homework**

why are auckland wellington dunedin and christchurch mian centers of new zealand
*July 29, 2008*

**math**

Art Conn bought a used car for $600 and sold it to Hardy Pyle for $800. He later bought it back for $800 and resold it for $1000. Did Art make a profit, if so how much? Is the correct answer yes $400?
*May 15, 2008*

**math**

Thank You.
*May 15, 2008*

**math**

If a teenager and a half can eat a pizza and a half in a day and a half, how many pizzas can twelve teenagers eat in three days? Is the answer 36?
*May 15, 2008*

**math**

My name is Two Twenty. I am in search of my friend. Find the sum of my proper divisors to bring my journey to an end. What is my friend's name?
*April 21, 2008*

**math**

Arrange the digits 5, 6, 7, 8, and 9 in the blanks to maximize the product. ___ ____ ____ x ____ ____
*April 21, 2008*

**math**

Determine the value of A if the ten digit number 512A51739A is divisible by 7, 11 and 13. Is the correct answer 6?
*April 21, 2008*

**math**

It's forty!
*April 21, 2008*

**math**

That is true. I totally forgot.
*April 21, 2008*

**math**

Only one number is spelled in the English language with its letters in alphabetical order. What is the number? Is the correct answer eight?
*April 21, 2008*

**m**

Name the triple (a, b, c) of positive integres exist such that a, b, and c are prime and a squared and b squared = c?
*April 2, 2008*

**math**

thank you.
*April 2, 2008*

**math**

How many minutes are needed to make a 30 mile trip at an average speed of 20 miles per hour?
*April 2, 2008*

**math**

The average, that is, the arithmetic mean, age of a group of doctors and lawyers is 40. If the average age of the doctors is 35 and the average age of the lawyers is 50, then what is the ratio of the number of doctors to the number of lawyers?
*April 2, 2008*

**math**

A group of mathematics teachers went to a restaurant. They agreed to split the bill equally. When the bill arrived, two of them discovered that they had forgotten their money. The others in the group agreed to make up the difference by paying an extra $1.30 each. If the total ...
*April 2, 2008*

**math**

Find a, given that 5 is the remainder when x to the fourth power - 2x cubed + ax squared - x - 1 is divided by x + 2?
*April 2, 2008*

**math**

Mary Fairfax Somervilee was a nineteenth century mathematician in England. To discover the year in which she was awarded a silver medal for her solution to the Diophantine equation, find the value of the following expression: 3(1 + 3 + 5 + ... + 51) - 221
*March 18, 2008*

**math**

4. Aristotle used deductive logic, in particular, syllogism. Solve for G to find in which century B.C. he was born. A = D B = 4 E = 3 D = E and G = A + 1
*March 18, 2008*

**math**

1 1 1 1 2 1 1 3 3 1
*March 18, 2008*

**math**

In 1654 Blaise Pascal invented Pascal's triangle,for which the first four rows are given: 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 --1 6 15 20 15 6 1 --1 7 21 35 35 21 7 1 Determine the ratio of the sums of the terms of the seventh and eighth rows. Is this answer ...
*March 18, 2008*

**math**

If the square root of the square root of the square root of a number is 2, what is the number? I got 256. Is that correct?
*March 18, 2008*

**math**

Fifty umbrellas were sold on a rainy April day. Five times as many red as blue were sold, three times as many green as blue, nine more black than blue, and seven fewer purple than black. Five umbrellas were purple and six were white. How many of each color were sold?
*March 18, 2008*

**math**

If a is 50% larger than c and b is 25% larger than c, then a is what percent larger than b? (a) 20% (b) 25% (c) 50% (d) 100% (e) 200%
*February 17, 2008*

**math**

All the even numbers from 2 to 98 inclusive, except those ending in 0, are multiplied together. What is the rightmost digit, that is, the units digit of the product? (a) 0 (b) 2 (c) 4 (d) 6 (e) 8
*February 17, 2008*

**math**

The positive integer 4 can be represented as a sum of 1's or 2's in five ways, such as 1 + 2 + 1 and 1 + 1 + 2. Show all the ways that the positive integer 5 can be represented as a sum of 1's or 2's.
*February 17, 2008*

**math**

What is the sum of all possible digits that could fill in the blank in 47_021 so that the resulting five digit number is divisible by 3?
*February 17, 2008*

**math**

What is the sum of all two digit positive integers whose squares end with the digits 01?
*February 17, 2008*

**math**

Vanna Red sells the vowels a, e, i, o, and u each for a different price but less than $250. Consonants are free. You must pay separately for each occurrence of a vowel in a word. Audacious sells for $260, equivocations for $340, inimitable for $225, onomatopoeia for $435, and ...
*February 14, 2008*

**math**

What is the least positive integer that has exactly thirteen factors?
*February 14, 2008*

**algebra**

8/w-9/w=-1/2 -1/w=-1/2 w=2
*February 12, 2008*

**Calculus**

What is the tens digit of 0! + 1! + 2! + 3! + ... + 2000!?
*February 12, 2008*

**Calculus**

On Dick's birthday, his brother Harry is seventeen years younger than three times Dick's age. The boys father, Tom, is twelve years older than twice Harry's age. If Dick is seven years younger than his brother, how many candles are on Dick's cake?
*February 12, 2008*

**Calculus**

Vanna Red sells the vowels a, e, i, o, and u each for a different price but less than $250. Consonants are free. You must pay separately for each occurrence of a vowel in a word. Audacious sells for $260, equivocations for $340, inimitable for $225, onomatopoeia for $435, and ...
*February 12, 2008*

**Calculus**

What is the least positive integer that has exactly thirteen factors?
*February 12, 2008*

**Calculus**

Your high school softball team has won ten games and lost five games. To get into the playoffs, your team must win at least 80% of the games that it plays. If your team wins all its remaining games, it makes the playoffs. What is the fewest number of games that your team could...
*February 12, 2008*

**Environmental Science**

Compare and contrast the decomposers wtih other consumers in terms of the matter and energy changes that they perform. Please help!
*September 5, 2007*

**Environmental Science**

State the two energy laws. I only found that basic types are potential and kinetic energy. Em I right or wrong? My other question How does it relate to entropy? Entropy is a measure of disorder or uncertainly about a system. Don't get it?! Help me please I'm a little ...
*September 5, 2007*

**Environmental Science**

In one sentence, define matter and energy. I don't how in the world em I going to define in a sentence. Please help! Thanks!
*September 5, 2007*

**Early Childhood Literacy**

I think 1st one is right. But i think the 2nd one should be (A). Because when have you ever heard a two year say mommy buyeded a book. Unless it was born genusis LOL :).
*August 30, 2007*

**Science**

5 examples of (A)Source of kinetic energy (B)Source of potential energy (C)Chemical energy
*August 30, 2007*

**lanuage arts**

What is a coplex, compound, and compound-complex. Sorry it was complex, compound, and compound-complex. Thank you for using the Jiskha Homework Help Forum. Try the following site: http://www.infoplease.com/cig/grammar-style/sentence-structure-fab-four.html
*August 20, 2007*

**language arts**

An example of a simple sentence? This is an example of a simple sentence. The sentence above has a subject (This) and one verb (is).
*August 20, 2007*

**health**

I've read through my book and am having trouble understanding the chapter when they talk about the following topics can someone explain it to me thanks How do lipids move through the body so they can be digested and absorbed? How are lipids stored in the body? http://au....
*June 14, 2007*

**math,help**

and then this one as well : state the dual problem for each linear programming problem. minimize w =y1+y2+4y3 subject to: y1+2y2+3y3 >=115 2y1+y2+8y3>=200 y1 +y3 >=50 with y1>=0, y2>=0, y3>=0
*June 13, 2007*

**math,help**

this is from another section one of the problems can someone help me. dierections: use the simplex method to solve each linear programming problem. maximize z = 12x1 +15x2 +5x3 subject to: 2x1+2x2+x3 <= 8 x1+4x2+3x3<=12 with x>=0,x2>=0,x3>0
*June 13, 2007*

**math,help**

also can somone explain to me these types of problems. directions are introduce slacks variables as necessary, then write the intial simplex tableau for each linear programming problem. find x1 >= 0 and x2 >= 0 such that x1+x2<=10 5x1+3x2<=75 and z=4x1+2x2 is ...
*June 13, 2007*

**math , help**

can someone show me how to solve this: directions: pivot once as indicated in each simplex tableau. Read the solution from the result. the number that is highlighted is row 2 column 3 which is the 5 the matrix is a 4 X 8 under column one it reads as: x1/x2/x3/s1/s2/s3/z 4/2/3/...
*June 13, 2007*

**health class**

Can someone help me with this:thanks... "Should we eliminate fats from our diets altogether and increase proteins" "What are some of the benefits that unsaturated fats and proteins provide when included in a balanced diet" This is my opinion on this: I ...
*June 12, 2007*

**algebra II**

I need help solving these types of problems here is one one of them. Can somone show me how to solve them.thanks Production Requirements An electronics company produces transistors, resistors, and computer chips. Each transistor requires 3 units of copper, 1 unit of zinc, and ...
*June 8, 2007*