Thursday
April 24, 2014

Posts by Sarah


Total # Posts: 3,755

Physics
A bucket of mass M = 5.47 kg is attached to a second bucket of mass m = 3:52 kg by an ideal string. The string is hung over an ideal pulley as shown in the gure. Mass M is started with an initial downward speed of 2.13 m/s. What then is the speed (m/s) of mass M after it has m...

Physics
A crate of mass 0.812 kg is placed on a rough incline of angle 35.3 degrees. Near the base of the incline is a spring of spring constant 1140 N/m. The mass is pressed against the spring a distance x and released. It moves up the slope 0.154 meters from the compressed position ...

Calculus
I'm doing test corrections, and it's been a few weeks since we did this, so I'm a little fuzzy. I'm supposed to find the zeros, relative extrema, and inflection points of f(x) = x^3 - 6x^2 + 3x + 10. The zeros would be -1, 2, and 5 right? Then I would take the ...

Physics
A ball is falling through the air. It has just two forces acting on it, its weight and air resistance. Which of the following statements is true? a. There are only conservative forces acting on the ball. b. There are only nonconservative forces acting on the ball. c. There are...

Math
Jared, the bank teller, has a total of 124 bills in fives and tens. The total value of the money is $840. How many of each kind does he have?

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 spri...

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?...

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?

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?

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?

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?

US History
What three parts make up the supreme law of the land?

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?

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?

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

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

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

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?

early chilhood development class or edu
lord cause I looked in the book and nothing but I think B.

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 coo...

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

cook
Appropriate cooking methods are cost-efficient because:

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

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

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 ...

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 ...

Algebra
"Did you hear about..." Its 12 words btw

chemistry
Acid dissociation constant for HNO3+H2O-H3O+ +NO3= I have [H3O+][NO1-3]/[HNO3] Do I have this right?

chemistry
Conjugate base of acid H3PO4= I have H2PO-4 Is this correct?

chemistry
Acid, base, or salt? I have H2SO4= Acid, KOH= Salt, MgCl2= Salt, and NH3= Base Are these correct?

trigonometry
Evaluate and round your answer to the nearest hundredth. csc(-120o)

chemistry
I got 17.14= 17.1M. Is this correct? Thank you

chemistry
6.00M HCl

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?

chemistry
I went through the equation three times. I got 0.125 M NaOH. Is this correct? Thank you

chemistry
What is molarity of solution made by combining 10.0g of NaOH with enough water to reach a total volume of 2.00L?

chemistry
Thank you so much, i really appreciate it!

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?????

chemistry
How many moles of ammonium chloride could be found in 100g of water at 70 degrees celsius?

chemistry
How many grams of ammonia can dissolve in 100g of water at 22 degrees celsius?

Chemistry
the mass is 225 lb

Chemistry
How do you convert 25.0 mg/mL to cc?

ALGEBRA
40+10+50

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?

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...

Algebra
-5x*-4 -5*-4 +8x = 20x+ 20+ 8x = 28x+ 20

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 ...

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...

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

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

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

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)

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?

Math
Okay thanks:)

Math
Is this right? 1,054 dollars.

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?

Reading
nvm disregard my answer - i looked at it in different line formatting, go with Ms. Sue

Reading
I would say AABB me and disagree rhyme & true and chew rhyme

Reading
you should include some lines from Great Glorious Gobs - so someone can help you detect the rhyming scheme

Art
What are the essential pillars of Neo-Classicism? Why is emotion important to the Romantic painters? Why did they use bright vibrant colors?

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?

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?

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)

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 = ??

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 ...

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?

Art History
How is "Liberty Leading the People" similar to "Coronation of Napoleon"? How do they differ?

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

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

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?

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

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?

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.)

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 me...

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?

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

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...

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.

health
9. Human blood, which has a pH of approximately 7.4, is a/an _______ substance.

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 ...

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

economic
pls show me the chart for production possibility curve

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 wh...

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 ...

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?

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 ...

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?

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?

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.)

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...

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 awa...

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 pot...

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...

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.

geometry
ray xy bisects angle axb?

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

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 stude...

drama
The best in this kind are but shadows" is

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?

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?

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