Saturday
February 13, 2016

# Posts by Jack

Total # Posts: 1,553

Physics
You are in the supermarket, pushing a cart with a force of 92 Newtons in the horizontal direction. There is a constant force of kinetic friction operating on the cart of 16.8 Newtons. Calculate the net work done on the cart, if the cart is displaced 5.6 metres in a straight line.
February 11, 2016

Science
You drop a ball, mass 117.1 grams from a height of 68.9 cm. It bounces back to a height of 48.1 from the floor. What is the change in gravitational potential energy from the moment it is dropped, to the moment it reaches the maximum height from the bounce?
February 11, 2016

math
Yasmin lives 400m from Anton.Kevin lives 0.45km from Anton.Jared lives 40 000mm from Anton.who lives closest to Anton?how do you know?make sure to show your work?
February 8, 2016

Precalc
Taxes on a house assessed at \$64,000 are \$1500 a year. If the assessment is raised to 85,000 and the tax rate did not change, how much would the taxes be( round to two decimal places)
February 7, 2016

Maths
A glass is designed in the shape of a cylinder. it has a radius 5cm, and holds 1 litreof liquid, what's the height of the glass
February 4, 2016

Calculus(PLZ HELP)
That website isn't helpful since the problem is a box cross sectional problem. But thank you for trying to help
February 2, 2016

Calculus(PLZ HELP)
A serving bowl has an inside diameter of 12 inches and a depth of 4 inches. The bowl is fashioned from part of a sphere. Find the capacity (volume) of the bowl.
February 2, 2016

Sidney flew in an airplane five times during her vacation.The flights averaged 2 hours 8 minutes long.The lengths of her first four flights were 2 hours 10 minutes,3 hours 20 mins,1 hours 15 minutesand 2hours 40 minutes.What was the length of her last flight
February 1, 2016

Science
What is the centripetal acceleration a satellite is orbiting the Earth at an altitude of 300.22 km?
February 1, 2016

Physics
dont be a dick bob
January 31, 2016

physics
Imagine a parallel universe in which the electric force has the same properties as in our universe but there is no gravity. In this parallel universe, the sun carries charge Q, the earth carries charge −Q, and the electric attraction between them keeps the earth in orbit...
January 31, 2016

physics
An electron is projected with an initial speed of (1.90x10^6 m/s) into the uniform field between two parallel plates. Assume that the field between the plates is uniform and directed vertically downward, and that the field outside the plates is zero. The electron enters the ...
January 31, 2016

Math
Actually, rounding to the nearest whole number is incorrect. For example, 24 4/7 rounds up to 25, not the best number to divide by 4 to get your estimate. What you need to do is to find the nearest number (up or down) that is compatible with 4. So in this case, 24 4/7 would ...
January 23, 2016

Maths
The scale of a map is 1:500. Find the length of a road in real life if it is 6cm long on the map
January 23, 2016

Language arts
based on the text preview as well as research about the background of the novel and the author's life a reader can predict that the novel will most likely be about Deez nuts HA GOT EM
January 20, 2016

Social studies
Hey ms. sue . I went to the link that you put in here but I didn't see what I was looking for? could you pls help me>
January 18, 2016

Math
I need help please. Assume that one dollor is equal to 1.14 euros. If 500 g of an item is selling for 25 euros, what is its price in dollars per kg?
January 14, 2016

Algebra
write equation of given translation of y=|x| 1 unit down 5 units right 10 units left 4 units up 6 units left
January 4, 2016

Math -Algebra
write equation of given translation of y=|x| 1 unit down 5 units 10 units left 4 units up 6 units left
January 4, 2016

MATHS HELP URGENT(TIME AND WORK)
A can do a piece of work in 12 days whereas B can destroy the work in 3 days. A does the work for 10 days and then B destroys the work up to 2 days. In how many days will the work be finished?
January 1, 2016

math
You need 4 more ounces
December 30, 2015

Algebra 2 (Math)
Divide 3x^3 + 3x^2 + 2x – 2 by x + 3 using long division. Check my answer please. 3x^2 – 6x + 20 3x^2 + 12x – 16 3x^2 + 12x – 16, R 58 3x^2 – 6x + 20, R -62 (I think that it's this one)
December 22, 2015

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

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

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

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
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

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