Tuesday

September 16, 2014

September 16, 2014

Total # Posts: 3,875

**history**

Correction* I Got B.
*January 5, 2012*

**history**

How did the crises in the 1970s illustrate the problem of economic interpendence? A. All nations rely on oil and when nations with oil resources underwent political crises production was halted and prices soared creating economic shock waves. B. The dependence of the United ...
*January 5, 2012*

**Physics**

Thank you so much
*January 4, 2012*

**Physics**

I did that including making k=(1/2)mvsqared, and I changed 65mph to mps. I get 8.89 as my answer and the computer says I am wrong and should get 36.5 what am I missing
*January 4, 2012*

**Physics**

A car with bad shocks has a mass of 1500 kg. Before you go for a drive with three of your friends you notice that the car sinks a distance of 6.0 cm when all four of you get in the car. You estimate that the four of you together have a mass of 271 kg. As you are driving down ...
*January 4, 2012*

**Physics**

my computer re sent it sorries, i was only trying ot post it once
*January 4, 2012*

**Physics**

A car with bad shocks has a mass of 1500 kg. Before you go for a drive with three of your friends you notice that the car sinks a distance of 6.0 cm when all four of you get in the car. You estimate that the four of you together have a mass of 271 kg. As you are driving down ...
*January 3, 2012*

**Physics Repost**

A at disk of material has the same mass as the Earth, 5.98E+24 kg, and has a radius of 6.25 E+07 m. Point A is located a distance of 5.8E+06 m above the center of the disk. Point B is located right at the center of the disk. Treat all of the mass as if it were located in the x...
*January 1, 2012*

**Physics**

Right and I have two different masses that need to be multiplied. The my r0 is 6.25 E 7, and R is 5.8 E 6, but using these number i am still getting 1.48 E 9 and not 2.88 E 9, so I am not sure, I have tried it different ways, am I missing something obvious here?
*December 31, 2011*

**Physics**

So I get most of what the website is saying however, it says M squared, but I have two masses and only one radius, so I am still a little confused. Please help
*December 31, 2011*

**Physics**

A at disk of material has the same mass as the Earth, 5.98E+24 kg, and has a radius of 6.25 E+07 m. Point A is located a distance of 5.8E+06 m above the center of the disk. Point B is located right at the center of the disk. Treat all of the mass as if it were located in the x...
*December 31, 2011*

**Maths**

How many points would there be if you needed to draw a 21 lined mystic rose
*December 30, 2011*

**Physics**

3. A particle of mass 0.5 kg has velocity 2 m/s. It is moving at constant velocity along a line that passes 0.5 m away from the origin, as shown in the figure below. Rank the angular momentum of the particle when it is at the points A, B, and C from smallest to greatest. Point...
*December 27, 2011*

**Physics**

2. We have two vectors that line in the x-y plane. If we take the cross-product of those two vectors we know that a. the magnitude of the cross-product will always be equal to the product of the magnitudes of the two vectors. b. the magnitude of the cross-product will always ...
*December 27, 2011*

**Physics**

1. Consider the two vectors P and Q. The definition of P is P = i × (i × j). The definition of Q is Q = (i × i) × j . a. The magnitude of P is equal to the magnitude of Q. b. The magnitude of P...
*December 27, 2011*

**Physics**

I did check E and it is 20NM in the -Z So now I am even more confused.
*December 27, 2011*

**Physics**

the square was is the ^ on top of the i and j vectors. also does that mean 1-3 is correct?
*December 27, 2011*

**Physics**

1. I am thinking A since the vectors are techinqually the same and multiplication is associative 2. I am pretty sure it is E. 3.since the particle is not attached/drawn to the origin i believe it has no angular momentum and therefore B 4. 5 times 2 is 10 so C or D so I am ...
*December 27, 2011*

**Physics**

1. Consider the two vectors P and Q. The definition of P is P = i × (i × j). The definition of Q is Q = (i × i) × j . a. The magnitude of P is equal to the magnitude of Q. b. The magnitude of P...
*December 27, 2011*

**statistics**

Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
*December 19, 2011*

**Physics**

A basketball player, standing near the basket to grab a rebound, jumps 65.6 cm vertically. How much time does the player spend in the top 10.7 cm of his jump
*December 17, 2011*

**English**

true or false 1)true or false, diction, rhythm,phrasing,sentence length,and other features of language make up a writer's style 2)in the story a pair of silk stockings, irony is not important to the theme 3)in the white heron, the white heron means the same things to ...
*December 17, 2011*

**author**

b a b c b a
*December 16, 2011*

**vocab**

8)dialog
*December 16, 2011*

**algebra**

COrrect ! great job
*December 16, 2011*

**physics**

A bullet with mass m = 5.21 g is moving horizontally with a speed v=367 m/s when it strikes a block of hardened steel with mass M = 14.8 kg(initially at rest). The bullet bounces o the block in a perfectly elastic collision. (a) What is the speed (m/s) of the block immediately...
*December 15, 2011*

**Physics**

A 645-kg elevator starts from rest. It moves upward for t = 3.13 s with a constant acceleration until it reaches its constant cruising speed of v = 1.26 m/s. It moved 2.75m during that time. a) What is the average power (W)is delivered by the motor during the initial ...
*December 14, 2011*

**Physics**

Thanks that really helped. You get 3.88 if for vi you plug in the 2.13. Now I got it thanks
*December 14, 2011*

**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. Mass M is started with an intial downward speed of 2.13m/s. What then is the speed of mass (M) after it has moved 2.47m? The answers is ...
*December 14, 2011*

**Physics**

The answer should be 9.35m/s and I keep getting 9.40? What am I doing wrong
*December 14, 2011*

**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. Mass M is started with an intial downward speed of 2.13m/s. What then is the speed of mass (M) after it has moved 2.47m?
*December 14, 2011*

**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 ...
*December 13, 2011*

**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 ...
*December 13, 2011*

**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 ...
*December 13, 2011*

**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...
*December 12, 2011*

**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?
*December 12, 2011*

**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*

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