Saturday

August 30, 2014

August 30, 2014

Total # Posts: 3,839

**Physics**

A spring gun is made by compressing a spring in a tube and then latching the spring at the compressed position. A 4.97-g pellet is placed against the compressed and latched spring. The spring latches at a compression of 5 cm, and it takes a force of 9.12 N to compress the ...
*December 11, 2011*

**physics**

A pendulum of length L=26.0 cm and mass m= 168 g is released from rest when the cord makes an angle of 65.2 degrees with the vertical. (a) How far (m) does the mass fall before reaching its lowest point. (b) How much work (J) is done by gravity as it falls to its lowest point...
*December 11, 2011*

**Physics**

14. You throw a 2 kg. Stone straight up into the air with a velocity of 6m/s. What is the max height of the stone and the total time it takes for it to come back down?
*December 7, 2011*

**Physics**

14. You throw a 2 kg. Stone straight up into the air with a velocity of 6m/s. What is the max height of the stone and the total time it takes for it to come back down?
*December 7, 2011*

**Physics**

14. You throw a 2 kg. Stone straight up into the air with a velocity of 6m/s. What is the max height of the stone and the total time it takes for it to come back down?
*December 7, 2011*

**Physics**

14. You throw a 2 kg. Stone straight up into the air with a velocity of 6m/s. What is the max height of the stone and the total time it takes for it to come back down?
*December 7, 2011*

**US History**

What three parts make up the supreme law of the land?
*December 5, 2011*

**Math**

Jamie is a quality control specialist. He is required to check 180 rubber balls out of a shipment of 18,000for defects. He finds that 3 are defective. Of the balls in the bin, he predicts there will be 300 balls defective. What percent if the rubber balls are not defective?
*December 1, 2011*

**Math**

Jamie is a quality control specialist. He is required to check 180 rubber balls out of a shipment of 18,000for defects. He finds that 3 are defective. Of the balls in the bin, he predicts there will be 300 balls defective. What percent if the rubber balls are not defective?
*December 1, 2011*

**Chemistry**

Calculate the pH at the halfway point and at the equivalence point for each of the following titrations.100.0 mL of 0.56 M HCl titrated by 0.28 M NaOH halfway point equivalence point
*November 30, 2011*

**Chemistry**

Calculate the pH at the halfway point and at the equivalence point for each of the following titrations.100.0 mL of 0.56 M HCl titrated by 0.28 M NaOH halfway point equivalence point
*November 30, 2011*

**Chemistry**

Calculate the pH at the halfway point and at the equivalence point for each of the following titrations.100.0 mL of 0.56 M HCl titrated by 0.28 M NaOH halfway point equivalence point
*November 30, 2011*

**Phsyics**

A 110- crate, starting from rest, is pulled across a floor with a constant horizontal force of 380 . For the first 11 the floor is frictionless, and for the next 11 the coefficient of friction is 0.33.What is the final speed of the crate?
*November 28, 2011*

**early chilhood development class or edu**

lord cause I looked in the book and nothing but I think B.
*November 27, 2011*

**early chilhood development class or edu**

A safety factor that is important to successful nutrition education activities is: Answer a. allowing children to cook on burner tops b. preplanning all steps of the activity c. allowing children to taste from cooking pots d. providing boxes for children to stand on while ...
*November 27, 2011*

**cook**

a. nutrients are conserved b. food shrinkage is minimized c. waste due to overcooked and/or burned food is prevented d. all of the above
*November 27, 2011*

**cook**

Appropriate cooking methods are cost-efficient because:
*November 27, 2011*

**algebra**

write down each step of the procedure you used, using the slope-intercept method. For the following equation: 4x + 6y = 48
*November 26, 2011*

**algebra**

write down each step of the procedure you used, using the slope-intercept method. For the following equation: 4x + 6y = 48
*November 26, 2011*

**Physics**

How do I find the binding energy for the nuclei of Lithium 6. The equation I'm using is : B(N,Z)=Z*m(0,1)*c^2+N*(mass of n)*c^2-m(N,Z)*c^2. B(N,Z)=3*(1.00783u*1.66E-27kg)*(3E8 m/s)^2+3*(1.008664u*1.66E-27kg)*(3E8 m/s)^2-(6.015u**1.66E-27kg)*(3E8 m/s)^2 B(N,Z)= 4.84056E-12 ...
*November 26, 2011*

**Calculus - Optimization**

31246
*November 24, 2011*

**physics**

Question Part Points Submissions Used 1 –/1 0/2 Total –/1 A rigid tank contains 1.40 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 21.6 atm to 5.90 atm. Assume the volume of the ...
*November 23, 2011*

**Algebra**

"Did you hear about..." Its 12 words btw
*November 22, 2011*

**chemistry**

Acid dissociation constant for HNO3+H2O-H3O+ +NO3= I have [H3O+][NO1-3]/[HNO3] Do I have this right?
*November 22, 2011*

**chemistry**

Conjugate base of acid H3PO4= I have H2PO-4 Is this correct?
*November 22, 2011*

**chemistry**

Acid, base, or salt? I have H2SO4= Acid, KOH= Salt, MgCl2= Salt, and NH3= Base Are these correct?
*November 22, 2011*

**trigonometry**

Evaluate and round your answer to the nearest hundredth. csc(-120o)
*November 21, 2011*

**chemistry**

I got 17.14= 17.1M. Is this correct? Thank you
*November 21, 2011*

**chemistry**

6.00M HCl
*November 21, 2011*

**chemistry**

You leave a 20.0ml of 6.00m HCl on the counter. If 7.00ml of water evaporates out of container overnight. Whats the new molarity?
*November 21, 2011*

**chemistry**

I went through the equation three times. I got 0.125 M NaOH. Is this correct? Thank you
*November 21, 2011*

**chemistry**

What is molarity of solution made by combining 10.0g of NaOH with enough water to reach a total volume of 2.00L?
*November 21, 2011*

**chemistry**

Thank you so much, i really appreciate it!
*November 21, 2011*

**chemistry**

Calculate the mass percent concentration of a solution made by dissolving 5.00g of NaCl in 25.0g of water? I got 5.00g/25.0g=0.2 x 100= 20% Is this right?????
*November 21, 2011*

**chemistry**

How many moles of ammonium chloride could be found in 100g of water at 70 degrees celsius?
*November 21, 2011*

**chemistry**

How many grams of ammonia can dissolve in 100g of water at 22 degrees celsius?
*November 21, 2011*

**Chemistry**

the mass is 225 lb
*November 21, 2011*

**Chemistry**

How do you convert 25.0 mg/mL to cc?
*November 21, 2011*

**ALGEBRA**

40+10+50
*November 20, 2011*

**math**

the regular price of a Zebra-FX skateboard is $180, but is on sale at a 25% discount A. How much is the discount? B. What is the sale price?
*November 18, 2011*

**physics**

A block of mass m is held against a spring of spring constant k which is compressed a distance Ax. On the shaded region (d = 2 m), there is a coefficient of kinetic friction = 0.3 microcontroller, which then applies the rest of the course takes place without friction. The loop...
*November 17, 2011*

**Algebra **

-5x*-4 -5*-4 +8x = 20x+ 20+ 8x = 28x+ 20
*November 16, 2011*

**physics**

Tarzan, played by Patrick Huard, 60 kg, must cross a stream 5 m wide, and full of hungry crocodiles. To do this, decides to slide along a sloping tree trunk, hollowed and moist so that there is no friction. After the trunk, there is a part of 3 m platform covered in mud, with ...
*November 16, 2011*

**phisics**

plzz help me with my homework!!! Tarzan, played by Patrick Huard, 60 kg, must cross a stream 5 m wide, and full of hungry crocodiles. To do this, decides to slide along a sloping tree trunk, hollowed and moist so that there is no friction. After the trunk, there is a part of 3...
*November 16, 2011*

**math**

In the voting for city council precinct 5 only 1/2 of all eligible voters cast votes. Shelley- 1/10 votes recieved and Daley 2/8 votes recieved. what fraction of all eligible voters voted for shelley? Daley? Who recieved the most votes? Thank you very much
*November 15, 2011*

**chemistry**

Ok so anyway I got CaCO3 <===> Ca + CO3 Ksp = 4.96x 10^-9 = x^2 \/ Sq root = 7.043x10^-5 I am lost on where togo from here IF I am even doing it right
*November 14, 2011*

**chemistry**

If water is saturated with CaCO3, how much of it has to evaporate to deposit .250g of CaCO3. Ksp CaCO3 = 4.96 x 10^-7
*November 14, 2011*

**chemistry**

Looking for Ksp ------- Compound: SrCO3 [Cation] : 2.4 x 10^-5 [Anion] : 2.4 x 10^-5 Ksp ?? Assume all concentrations are equilibrium constant in M, (mol/L)
*November 14, 2011*

**Math**

A store's sign is the shape of an equilateral triangle. One side measures 21 inches. What is the length of each of the other two sides?
*November 14, 2011*

**Math**

Okay thanks:)
*November 14, 2011*

**Math**

Is this right? 1,054 dollars.
*November 14, 2011*

**Math**

Last year,your class held a fundraiser and donated 850 dollars to a local charity.This year,your class's donation increased by 24%.How much did your class donate this year?
*November 14, 2011*

**Reading**

nvm disregard my answer - i looked at it in different line formatting, go with Ms. Sue
*November 14, 2011*

**Reading**

I would say AABB me and disagree rhyme & true and chew rhyme
*November 14, 2011*

**Reading**

you should include some lines from Great Glorious Gobs - so someone can help you detect the rhyming scheme
*November 14, 2011*

**Art**

What are the essential pillars of Neo-Classicism? Why is emotion important to the Romantic painters? Why did they use bright vibrant colors?
*November 14, 2011*

**Calculus- rates**

A man 6ft. tall walks at the rate of 5 ft/sec toward a streelight that is 16 ft. above the ground. At what rate is the length of his shadow changing when he is 10ft. from the base of the light?
*November 13, 2011*

**Calculus- rates**

A tanker is spilling oil into the water resulting in an oil slick that is close to circular. At te time that the slick's diameter is growing at a rate of 8 ft/sec, the diameter is 250 feet. At what rate is the area of the oil sick increasing?
*November 13, 2011*

**calculus**

A rectangle with its base on the x-axis is to be inscribed under the graph of y=2-x^2. Find the height of the rectangle if the area is the largest possible area. (Round to the nearest hundreth)
*November 13, 2011*

**chemistry**

H2 + I2 <====> 2 HI. Looking for Keq: Complete the equation. Assume all concentrations are equilibrium constants in mol/L , M Temp in Celcius = 25 [H2] = .355 [I] = .388 [HI] = .0922 K eq = ??
*November 13, 2011*

**chemistry**

you have the formula Ksp= [Mg] [CO3] and you need to substitute in.25 for CO3... And plug the Ksp in with what they gave you in the problem... algebraic equation getting Mg by itself which involves multiplying both sides by the reciprocating fraction and having a divisor. You ...
*November 12, 2011*

**chemistry**

Most Soluble compound CuS, Ksp = 1.27 x10^-36 PbS, Ksp = 9.04 x 10^-29 AgCl,Ksp = 1.77 X 10^-10 AgI, Ksp = 8.51 x 10^17 My book states that AgCl is insoluble in water and so are MOST phosphates and Sufides, So am I reasonable to say that AgI is the answer on this one?
*November 12, 2011*

**Art History**

How is "Liberty Leading the People" similar to "Coronation of Napoleon"? How do they differ?
*November 12, 2011*

**health**

Which of the following structures are tubes? A. Frontal, maxillary, sphenoidal, ethmoidal B. Eustachian, pharynx, bronchi C. Cilia, adenoids, mucous, epiglottis D. Apex, base, hilum
*November 12, 2011*

**chemistry**

Keq= (.200)(1.76 x 10^-5) / .150 work the math then with that answer, you do the Ph log and will get your answer
*November 11, 2011*

**Organic Chemistry I LAB**

why would 4-methyl-2-pentanone have a lower boiling point that 2-hexanone if they are isomers and their molecular weights are the same?
*November 9, 2011*

**math**

You buy a bottle of juice for $1.00. The juice costs .90 cents more than the empty bottle. How much does the empty bottle cost?? The answer is not 10 cents, or $1.00
*November 8, 2011*

**chemistry**

A reaction produced 55.7 mL of nitrogen gas, which was collected over water at 23oC. The measured barometric pressure was 742 torr. If the vapor pressure of water at 23oC is 21 torr, what was the mole fraction of N2 in the collected gas?
*November 7, 2011*

**Chemistry**

A sealed flask containing water and N2 gas in equilibrium is at a temperature of 25°C. If the concentration of N2 gas in the solution is 1.4 x 10-3 M, what is the partial pressure of N2 gas in the container? (kH for N2 gas in water is 6.1 x 10-4 M/atm at 25°C.)
*November 7, 2011*

**chemistry**

A 10.0 g cube of each of the following metals is heated to 100 °C and dropped (without loss of heat during transfer) into separate but identical beakers containing 100 mL of water at 25 °C. The temperature of the water in the beaker is measured at equilibrium. Which ...
*November 7, 2011*

**Chemistry**

Which one of the following liquids will have the highest freezing point? A. pure H2O B. aqueous glucose (0.050 m) C. aqueous CoI2 (0.030 m) D. aqueous FeCl3 (0.030 m) E. aqueous NaI (0.030 m) Could you please give a step by step process?
*November 7, 2011*

**early childhood education**

*CORRECTION* I meant A for #2! Striking a stationary ball, is a closed skill. sorry, dont know why I put c.
*November 6, 2011*

**early childhood education**

This is for #1: I had such a hard time with this ?. The answer is Spatial Awareness, Definition: "Generally speaking, spatial awareness is the recognition of the distance between objects. More specifically, though, the term "spatial awareness” refers to a person...
*November 6, 2011*

**statistics**

If the standard deviation for waiting times in a line is 5 minutes, the standard deviation for the averages of 30 randomly chosen waiting times is _____ minutes.
*November 6, 2011*

** health**

9. Human blood, which has a pH of approximately 7.4, is a/an _______ substance.
*November 6, 2011*

**Statistics**

Let's pretend the Work variable is normally distributed, with a mean/median/mode value of 22 and a standard deviation of 17. Based on these numbers, we can say that approximately 68 percent of students work between ______ and ______ hours per week. Select the TWO numbers ...
*November 4, 2011*

**statistics**

Let's pretend the Work variable is normally distributed, with a mean/median/mode value of 22 and a standard deviation of 17. Based on these numbers, we can say that approximately 50 percent of SOC 390 students work more than ____ hours per week
*November 4, 2011*

**economic**

pls show me the chart for production possibility curve
*November 4, 2011*

**science**

Ignore what I just said!! The answer just popped into my head after about half an hour of staring blankly at my book. (I'm assuming this is OU S105) I think what you have to do is find the point where the S wave and P wave are 5 mins apart (you should be able to measure ...
*November 4, 2011*

**science**

This answer isn't really helpful. Can somebody give a general explanation as to how you can work out the epicentral angle? I've got the same question and have been provided with a graph of p wave and s wave travel time. I'm assuming you find the place on the graph ...
*November 4, 2011*

**physics**

A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 56.0 m/s and returns the shot with the ball traveling horizontally at 44.0 m/s in the opposite direction. What is the impulse delivered to the ball by the racket?
*November 3, 2011*

**English**

HELP. How do would you annotate this? and answer the questions under the passage..??? But now, fearing death, all eyes fixed on Charybdis now Scylla snatched six men from our hollow ship, the toughest, strongest hands I had, and glancing backward over the decks, searching for ...
*November 3, 2011*

**Physics**

A baseball was hit at 45m/s at an angle of 45 degrees above the horizontal. How long did it remain in the air? How far did it travel horizontally?
*November 2, 2011*

**physics**

A forse of 75 N due north and 105 N due east is acting on a point. What is the magnitude and direction of the resultant force? What is the magnitde and direction of the equilibrant?
*November 2, 2011*

**physics help**

In this experiment you will be asked to plot a graph of mhg versus ac and fit your data to a straight line. What is the slope of the graph equal to in terms of the rotating mass MR? (Use any variable or symbol stated above as necessary.)
*November 2, 2011*

**Physics Lab**

(a) For the rotating mass in the lab setup by what ratio will the velocity change if the period is quadrupled? (b) For the rotating mass in the lab setup by what ratio will the velocity change if the period is decreased by a factor of four? (d) For the rotating mass in the lab...
*November 2, 2011*

**Bepper**

One end of a long 26 foot ladder is on the floor and the other end rests on a verical wall the bottom end of the ladder is pulled away from the wall qt a rate of 4 feet per second. how fast is the angle formed by the ladder and the floor changing when the ladder is 10 feet ...
*November 1, 2011*

**statistics**

The time necessary to assemble a discount store display is normally distributed with μ = 5 minutes and σ = 30 seconds. A large number of potential employees are timed assembling a practice display. How much time (in minutes) should the personnel manager allow the ...
*November 1, 2011*

**Calculus - Math**

Sorry in advance - it's a very wordy, multi part question. The parts with the ..........are the parts that require an answer. I have no idea where to begin or what to do to solve this. We will determine the volume obtained when revolving the solid bound by the curves y = x...
*October 31, 2011*

**math analysis**

A rectangle with its base on the x axis is to be inscribed under the positive portions of the graph of y=8-x^2 . Write an equation for the area of the rectangle which uses only the variable x.
*October 31, 2011*

**geometry**

ray xy bisects angle axb?
*October 29, 2011*

**physics**

a 2500kg truck applies a force of 4000 N to the road to accelerate forward. What is its rate of acceleration?...can someone please help? I got half way and then got really confused what do I do? Thanks
*October 28, 2011*

**statistics**

1. The on-campus housing costs for a semester at a state university are Normally distributed with a mean of $1553 and a standard deviation of $329. (a) What is the distribution of the mean on-campus housing cost for a semester at this university for a random sample of 50 ...
*October 26, 2011*

**drama**

The best in this kind are but shadows" is
*October 25, 2011*

**statistics**

In a clinic, 62% of patients are female. Fifteen patients are selected at random with replacement. What is the probability that at least 1 of the fifteen patients is male?
*October 22, 2011*

**statistics**

In a clinic, 62% of patients are female. Fifteen patients are selected at random with replacement. What is the probability that at least 1 of the fifteen patients is male?
*October 22, 2011*

**Social Studies 9 **

* he DID mess with all the neighboring countries and murdered the Prussians
*October 22, 2011*

**Social Studies 9 **

Thanks :) and i guess the charges might bring against him is that, he used roman laws, and was a tyrant leader ? :/ ima not very sure .
*October 22, 2011*

**Social Studies 9 **

Yes, because with napoleon there was no liberty,equality and brotherhood. He made himself an emperor and made most of his brothers and sisters monarchs of various countries controlled by france . would this be right ?
*October 22, 2011*

**Social Studies 9 **

Thanks for correcting me :P but is this answer right though ?. and i know i havent given my opinion yet. and how would i write one though :P ?
*October 22, 2011*

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