Monday
September 26, 2016

Posts by Jack

Total # Posts: 1,647

science
D. Firecrackers are converted to thermal energy when they burn.
December 5, 2015

Physics
You jump from a height of 1.0m from the surface of the Earth. The Earth will actually move a bit as you land. a.) Explain Why b.) Estimate the distance the Earth moves, listing any assumptions you make
December 2, 2015

social studies
K thank you
November 30, 2015

social studies
How did Muslim Turks influence turkey's development?
November 30, 2015

Social Studies Check My Work
People can do what they want... who cares if its a quiz in CCA? Btws 3,4,7 are all wrong and if you submit her answers you get a 70% (I learned that by experience xD)
November 25, 2015

Social Studies Check My Work
People can do what they want... who cares if its a quiz in CCA?
November 25, 2015

Chemistry
you have 5% formic acid solution and a 5% acetic acid solution. You titrate 5mL each with .1868M NaOH. A. Which will need more NaOH to reach the end point? B. How much more?
November 24, 2015

math
What is the expected value of the cost of of claims on a males drivers policy? Note: number of drivers is 9634 number of claims is 977 and the average cost per claim is 6108 euro
November 23, 2015

Physics
A small rock with mass m moves at velocity v0 and hits a rod of mass M as shown. The rod is initially at rest. The collision is completely inelastic. a) What is the angular velocity of the rod after the collision? b) What is the maximum angle the rod makes with the vertical?
November 23, 2015

Algebra II
How can you completely factor the following polynomial: 6x^5-51x^3-27x
November 18, 2015

chem
Calculate the equilibrium concentration of NH3,Cu^2+,[ Cu(NH3)]^2+ ,[Cu(NH3)2]^2+,[Cu(NH3)3]^2+,and[Cu(NH3)4]^2+ in a solution made by mixing 500.0 ml of 3.00 M NH3 with 500.0 ml of 2.00*10^-3 M Cu(NO3)2. The sequential equilibria are Cu^2+ +NH3---->[Cu(NH3)]^2+ ka1=1.86x10...
November 17, 2015

chem
Thanks!
November 17, 2015

chem
the following experiment was performed in the laboratory : an excess of solid SrCrO4 is vigorously shaken in water until a saturated solution is obtained. The excess solid is filtrated from the solution and 25.00 ml of the solution is titrated with 0.0115 M fe(no3)2 solution. ...
November 17, 2015

Physics
A block is on the end of a massless cable that is tied to a frictionless wheel (uniform disk) as shown in the figure at right. The wheel has a radius of 0.4 m. The system is initially at rest. If the block moves downward, with a constant acceleration, a distance of 2 m in 3 s...
November 17, 2015

Chemistry
You have a 250ml solution of 0.13M calcium iodate. How many grams of potassium iodate need to be added to the solution to begin to precipitate calcium iodate? The solubility product constant for calcium iodate is6.47 *10^-6. B) you have a 250ml solution of 0.13 M calcium ...
November 14, 2015

physics
How did you get three? .-.
November 12, 2015

physics
Upwards
November 12, 2015

physics
A stone is thrown from a height of 1.8 with a velocity of 29.4. How long does it take to reach its greatest height? I'm sure it has something to do with the s=ut+1/2 at squared not sure though
November 12, 2015

Marie Ernestine
Math/Science A car starts from rest and moves at the speed of 30 kph after half an hour. What is the cars acceleration?
November 11, 2015

science help ASAP
The answer for the first one is correct and the answer for the second one is D.
November 10, 2015

physics
Any ideas? A bird flying at 3m/'s west is given an acceleration of 1ms after five seconds what I'd it's velocity and how far has it travelled from its starting point?
November 5, 2015

physics
Got the answer it's basically 5-2/2.1=1.43s
November 5, 2015

physics
Relating to the first question. How long did it take to do this?
November 5, 2015

physics
Thanks. I understand it now. But we have like set formulas in our tables for incidence like v=u+at etc. I have learnt the changing velocity over time but in a test situation would I have to use the formulas given or the method appove?
November 5, 2015

physics
So basically I got this question and it's baffling. Over a distance of 5m the speed of a bicycle increase's from 2ms to 5ms what I's the magnitude of acceleration?
November 5, 2015

Social Studies
Yeah what is the second answer
November 5, 2015

Math
A boat pilot wishes to go in a straight line across a river from the east dock to the west dock in a ferryboat that has a still water speed 8.0 knots. If the river has a Southward current of 2.5 knots, what compass heading should be maintaned while crossing the river? What is ...
November 3, 2015

kon
can someone edit my essay?
October 24, 2015

history
what event convinced south Carolina to spend representatives to the first continental congress ? A. passage of the currency act B. passage of the intolerable act C. passage of the navigation act D. passage of the stamp act is it D
October 20, 2015

calculus
find the first and second derivatives for 3x^4-4xy^2+7=2y
October 14, 2015

Algebra 1
A drama club wants to raise at least $500 in ticket sales for its annual show. The members of the club sold 50 tickets at a special rate of $5. The usual ticket price the day of the show is $7.50. At least how many tickets do they need to sell the day of the show to meet the ...
October 11, 2015

Social Studies
which of the tive themes includes the human and physical features at a specific location
October 4, 2015

Science
What is the total displacement of two trips one 10km north and the other 24km east
September 30, 2015

Social Stuides
Hm, do you have any ideas on what it inspired then Reed?
September 30, 2015

Social Stuides
I'm actually currently surprised I didn't think of that, good idea!
September 30, 2015

Social Stuides
Wow, thank you for the help! Now I should be able to finish up this project! :D
September 30, 2015

Social Stuides
That's actually pretty good! Thanks, but i'll also want something more then ang gaming system. I'm going to defintaly use this.
September 30, 2015

Social Stuides
What were some inventions that were inspired by the telephone? I've already got computer, please don't say another phone like the cell phone and smart phone. Thanks!
September 30, 2015

English
the answer is b
September 28, 2015

Physics
The slab of steel shown below is being lifted at 0.50 m/s. It weighs 1.91×103N. If the angle θ equals 61.4 degrees, what is the tension in each cable?
September 26, 2015

Finance
DBP Inc. just paid a dividend of $2.50. The expected growth rate of dividend is 5 percent. The required return for investors in the first three years is 12 percent and 10 percent for the following three years. After those six years the required return is 8 percent. What is the...
September 26, 2015

Maths
A ladder of a length of 6m is placed against a wall. The distance from the foot of the ladder to the wall is 2.5m. How far up the wall is the ladder?
September 22, 2015

algebra
Variables that must be excluded from 2y^2+7y-30/y+6
September 18, 2015

college algebra
192,031 / 3.2 = 1% of the population =60,009.6875 60,009.6875*100=total population =6,000,969 people in Indiana
September 15, 2015

Math
c
September 15, 2015

physics
A tennis player serves a tennis ball it is moving horizontally when it leaves the racquet. When the ball travels a horizontal distance of 12 meters, it has dropped 55cm from its original height when it left the racquet. What is the initial speed of the ball? (neglect air ...
September 13, 2015

physics
A tennis player serves a tennis ball it is moving horizontally when it leaves the racquet. When the ball travels a horizontal distance of 12 meters, it has dropped 55cm from its original height when it left the racquet. What is the initial speed of the ball?
September 13, 2015

Science
the answer is that it will float because of BOFA DEEZ NUTS AHHAHAHHAHAHAH GOT EM
September 10, 2015

Math
Insert parentheses to make this number sentence true 81+19\25=9
September 8, 2015

chemistry
A normal salt is formed when all the hydrogen atoms in acid have been replaced by a metal.Give equation
September 7, 2015

math
Yes
August 31, 2015

Algebra
7 is the correct answer
August 26, 2015

ENGLISH
No It's 1. B 2. A 3. C 100% correct
August 11, 2015

physics
Using the following conversion factors, determine the number of milliliters in a volume of 2.37 fluid ounces: 1 gallon (gal) = 128 oz., 3.785 x 10-3 cubic meters (m3) = 1 gal, 1 mL = 10-6 m3. I got an answer 7.09ml, but it's incorrect, so confused how to covert those factors
August 8, 2015

math
Point C and point D are plotted on the graph. Plot points A and B to form rectangle ABDC with an area of 36 square units. Plot point E at (2, 4).
July 17, 2015

english
No i have to do a tale. I wont do that idea, because it wouldn't work. Thank you for your suggestions.
July 10, 2015

english
Thank you.. i wanted something to do more with the weather of summer, but i dont think it would work for a tale??
July 10, 2015

english
Taking a summer course and reading a novel
July 10, 2015

english
I need to create a tale, which the principal topic is summer. Im not sure what kind of tale i can write about summer
July 10, 2015

Chemistry
Also*
July 8, 2015

Chemistry
Always the answer would be .1, right?
July 8, 2015

Chemistry
Just trying to understand this, but is C always the basic number when doing problems like this?
July 8, 2015

Chemistry
If the electromagnetic radiation used to send television signals have a frequency of 3.0 * 10^9 Hz, what is its wavelength? I forget how to do a problem like this. Just taking a guess, is this somewhat a conversion equation?
July 8, 2015

Chemistry
How does the kinetic-molecular theory help explain the difference between solids, liquids, and gases? I don't know how to really answer this question because the theory only talks about gases, unless I am looking at the wrong one. I tried to look it up swell and all I got ...
July 8, 2015

Chemistry
When naming a molecular compound, such as CO, would I write it as mono carbon monoxide or carbon monoxide? My textbook has the rule written as prefix+1st element prefix+2nd element, but I am not sure if the mono applies to the carbon or not.
July 7, 2015

Chemistry
Other than what you stated, I feel as if I need something else to answer the first question, such as numbers to help back it up.
June 28, 2015

Chemistry
What data led to the development of the Law of Multiple Proportions? Give an example and explain why this law is important in chemistry. Would this be a good answer: John Dalton used the same observations he used for his law of definite proportions to help develop the law of ...
June 28, 2015

Chemistry Stoichiometry
Oh I see now. I read it as each step you had was just different equations that you combined, not as a series of steps. Thank you!
June 27, 2015

Chemistry Stoichiometry
I wasn't in class when my teacher taught me this, and she did not go over the material well, so how were you able to go from PV=nRT to M=dRT/P?
June 27, 2015

Chemistry Stoichiometry
The density of chloroform at a pressure of 220 mmHg and 25 degrees celsius is 1.42 g/L. Calculate the molar mass of chloroform. My set up is: mol*K .289 atm 1 1.42g/L ------------- ------------ ------ --------- .08206Latm 1 298K What I am unsure of is if this is the right way ...
June 27, 2015

Chemisty
How does the kinetic molecular theory help explain the difference between solids, liquids, and gases? Would the answer be basically stating how the theory states the difference of their atom structure? Or is it something else?
June 27, 2015

Calculus
Let f : R --> R be an odd function. Explain why, for any positive number a, the integral from -a to a of f(x) = 0.
May 19, 2015

Chemistry
yes that's what he was asking, thank you!
May 14, 2015

Chemistry
Consider the combustion of ethane: 2C2H6(g)+7O2(g)-->4CO2(g)+6H2O(g) If the ethane is burning at the rate of 0.7 mol/L × s, at what rates are and being produced?
May 14, 2015

Chemistry
The thiosulfate ion (S2O32-) is oxidized by iodine as follows: 2S2O32-(aq) + I2(aq) → S4O62-(aq) + 2I-(aq) In a certain experiment, 4.41×10-3 mol/L of S2O32- is consumed in the first 11.0 seconds of the reaction. Calculate the rate of production of iodide ion in ...
May 14, 2015

Chemistry
Which has the highest, second highest, third highest, and lowest boiling points? 1.0.20 m MnSO4 2.9.6E-2 m Al2(SO4)3 3.8.4E-2 m Al2(SO4)3 4. 0.45 m Sucrose(nonelectrolyte) [I know it is m times i but not sure how to get "i"]
May 13, 2015

IT/235 - IMAGE EDITING AND IMPLEMENTATION
If done in-house, what equipment would be required and what costs would be incurred? How would the photography affect the day-to-day store operations under each model?
May 11, 2015

Chemistry
A solution is made by dissolving 26.7 g urea, a nonelectrolyte, in 301 g water. (The vapor pressure of pure water is 23.8 torr at 25°C and 71.9 torr at 45°C.) Calculate the vapor pressure of this solution at 25°C.
May 6, 2015

Algebra
What the minimum of y=2x^2-7x-2? How do you find it?
April 21, 2015

maths, functions
The demand in units per week for a given product as a function of its price, p, in dollars is given as D(p) = 1100 Ð 200p, the supply of the same product in units per week as a function of its price, p, in dollars is given as S(p) = 100p Ð 100. The market clearing ...
April 21, 2015

operation managment
Garden Variety Flower shop uses 625 clay pots a month. The pots are purchased at $2 each. Annual carrying costs per pot are estimated to be 15 percent of cost, and ordering costs are $125 per order. The manager has been using an order size of 1,500 flower pots. There are 4 ...
April 16, 2015

Calculus
a) The value of a computer after t years after purchase is v(t) = 1000e^(-0.45t). At what rate is the computer's value falling after 5 years? b) Assume that the total revenue received from the sale of x items is given by R(x) = 32 ln (5x+3), while the total cost to produce...
April 13, 2015

algebra
Solve: 2a-3/a+1 = 3a-5/a+3
April 11, 2015

math
Ms. Sue! Can you please help me?
April 9, 2015

math
Boris has a coin and a number cube. The number cube is labeled 1-6. He flips the coin once and rolls the number cube once. What is the probability that the coin lands tails up and the cube lands on a even number? A. 2/3 B. 1/4 C. 1/12 D. 1/6 How do i solve this problem? I'...
April 9, 2015

social studies
I need help with the same question...
April 7, 2015

geometry.
Theres no numbers given to answer this question.
April 6, 2015

Math
Wells uf you think and do the math you Will get 3 Lbs and 6 Oz
April 2, 2015

This is nothing to do with school
A cinema sells adult tickets and child tickets. The total cost of 3 adults and 1 child is £30 The total cost of 1 adult and 3 children is £22 What is the cost of adult and child tickets
March 31, 2015

6 grade math
Choose all statements that are not true. a 20% of 20 is 4 b 30% of 30 is 9 c 40% of 50 is 15 d 50% of 110 is 60 e 60% of 60 is 360 The answer I choose is all of them. Is this correct.
March 26, 2015

Math
Choose all statements that are true? a 15% of 15 is 1 b 5% of 50 is 10 c 10% of 100 is 10 d 2% of 100 is 5 e 3 % of 200 is 6 I picked a, c and e.
March 26, 2015

math
2 lines are given by kx+6y-5=0 and 3x+2y+4=0 if they are parrallel what is the value of k
March 22, 2015

Algebra
If an angle, x, is in standard position, and P(-3, 4) is a point on the terminal side of the angle, what is the value of sin x?
March 15, 2015

chemistry
H2(g)+ o2(g)-> H20(l) (delta)Hf(h20(l)=-286 kj/mol the total volume of hydrogen needed fill the hindenberg was 2.3 x 15^5 m^3. what is the theoretical yield of heat (that which could have been evolved) when the hindenberg exploded, assuming all the hydrogen reacted?
March 15, 2015

chemistry
Hey DrBoB222 I was wondering if you could help me with that problem just a little bit ago again?
March 14, 2015

earth
Water
March 14, 2015

trig
The height should be somewhere around 4.5
March 13, 2015

trig
In this problem use Sin functions to solve. Sin(90) / 5 and set that equal to... Sin(65) / x and see what you come up with
March 13, 2015

chemistry
I would love help on trying to start this problem?
March 13, 2015

chemistry
okay thank you very much for helping me and everyone else that asks questions on here I think you did a really good job answering my questions and I will keep what you said about the molar mass and the atomic masses in mind for next time. Again I can't thank you enough.
March 13, 2015

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
  15. 13
  16. 14
  17. 15
  18. Next>>