Sunday

July 5, 2015

July 5, 2015

Total # Posts: 67

**chemistry**

Thank You
*April 26, 2015*

**chemistry**

methylene blue
*April 26, 2015*

**chemistry**

If 5.0 mL of 0.12 mmol dm-3 MB solution is diluted by adding 20.0 mL of 0.2 mol dm-3 HCl to it, what is the new MB concentration?
*April 26, 2015*

**Physics**

A certain automobile engine delivers 2.24 ✕ 10^4 W (30.0 hp) to its wheels when moving at a constant speed of 31.0 m/s ( 69 mi/h). What is the resistive force acting on the automobile at that speed?
*September 29, 2014*

**mathes**

how do calculate this 55 divided by 3500
*April 18, 2014*

**Earth Science**

need help plzz .... I did some but I would like someone to double check them too 1. How did planetesmals form planets? (1 point) A. They broke apart into smaller chunks. B. They collided and stuck together. C. They cooled and pulled ice together. D. They began to rotate. 2. ...
*November 8, 2013*

**English**

@Ms.Sue Please check 1.B 2.D 3.A
*October 21, 2013*

**English**

is 3 A
*October 21, 2013*

**English**

Well then lol could you help me?
*October 21, 2013*

**English**

1. Which of the following is not a type of folktale? (1 point) A. cautionary tale B. mystery** C. legend D. myth Read the following sentence: Some friends from my dance class went to the museum's ballet exhibit. Which of the following is an adjectival phrase? A. went to ...
*October 21, 2013*

**math (6 grade)**

What are objects that are between 5 centimeters to 8 centimeters long?
*January 20, 2013*

**Art Please check answers**

Ok were they all right or not very important
*December 3, 2012*

**physics**

A shell is ﬁred from the ground with an initial speed of 1.70 × 10 3 m/s (approximately ﬁve times the speed of sound) at an initial angle of 70.0 ◦ to the horizontal. The acceleration of gravity is 9.81 m/s 2 . a) Neglecting air resistance, ﬁnd...
*September 18, 2012*

**physics**

A pelican ﬂying along a horizontal path drops a ﬁsh from a height of 3.1 m. The ﬁsh travels 6.4 m horizontally before it hits the water below. What was the pelican’s initial speed? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s
*September 18, 2012*

**physics**

Janet jumps oﬀ a high diving platform with a horizontal velocity of 1.84 m/s and lands in the water 2.9 s later. How high is the platform? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m
*September 13, 2012*

**math**

order 3/10 from least to greastest
*September 3, 2012*

**question**

oh ok thankyou
*July 24, 2012*

**question**

if you have a chance of 1 out of 60 of your baby having down syndrome is it bad?
*July 24, 2012*

**math**

There were 25 students who completed a survey. There were 11 boys and 14 girls. One survey was picked at random. To the nearest hundredth, what is the probability it was completed by a girl?
*April 9, 2012*

**College math**

Please, help me with this problem: frind the derivative of each function at the given number. 21. f(x)= -4x + 5 at 3 22. f(x)= -4 + 3x at 1 thanks
*October 19, 2011*

**pompei**

what fractions are used for 96 cupcakes
*June 10, 2011*

**Chemistry**

0.198
*April 22, 2011*

**algebra rebus puzzle**

negative slope
*March 27, 2011*

**pyhsics**

I'm actually trying to do this problem right now. I'm a bit stuck on the second part. How do you find the speed of the object at t = 2.0s? Every kinematic equation I've tried to use requires acceleration, and I can't find acceleration with having the final ...
*March 15, 2011*

**8th grade science**

lol i need help so you guys are soooo dumb
*February 20, 2011*

**Physics**

A watch manufacturer claims that its watches gain or lose no more than 8 seconds in a year. How accurate is this watch, expressed as a percentage?
*February 1, 2011*

**algebra**

I need help solving and graphing the equation. y= -7+3
*January 27, 2011*

**physics**

a mass 3 kg is dropped from a 20m high stand how long does it take to reach the ground?
*January 5, 2011*

**physics**

a mass 3 kg is dropped from a 20m high stand how long does it take to reach the ground?
*January 5, 2011*

**4th grade**

Terrance describes the amount of money made based on the number of hours worked by the function rule y=10h. Given this function, how much money does Terrance earn for each hour worked?
*December 1, 2010*

**5th grade**

the lengths of two sides of a triangle are 15 inches each and the third side measures 10 inches what kind of triangle is that
*November 11, 2010*

**Geometry**

Which of the following equals (-4) A(-4) . (1-4) <- That's a fraction B(-4) . (1) C(-4) . (4)
*November 8, 2010*

**10th grade**

How do I answer and graph this problem 4x + 3y = 4
*October 27, 2010*

**English**

I have no idea. I haven't seen the animated cartoon of animal farm.
*July 30, 2010*

**English**

When an animated cartoon was made of Animal Farm, it was given a happy ending. Animals everywhere hear that Napoleon has betrayed the cause of animalism. They join in a second revolution and succeed in overthrowing him. This leads to the establishment of the original ideal ...
*July 30, 2010*

**english**

I surpose you could ask: Why did you become an English teacher? Where did you study to become a teacher? Why did you decide to teach? Is teaching English diffecult? Do you regret you choice to teach? What's your favourite book?
*July 30, 2010*

**History/ Need fast help**

What were some of political issues that was dealt in the Gilded age? What is the current political issues that is faced today? Are they Similar or different? Explain.
*April 14, 2010*

**4th grade**

2578 diveded by4
*March 1, 2010*

**U.S. History**

To what extent would it be accurate to say that New England, Middle, and Southern Colonies had merged to create a single American Society by the end of the French and Indian War?
*September 7, 2009*

**physics**

An electron is accelerated by a 4.7 kV potential difference. How strong a magnetic field must be experienced by the electron if its path is a circle of radius 8.0 cm?
*April 15, 2009*

**physics**

A 16.0 ohm and a 24.0 ohm resistor are connected in parallel. A difference in potential of 32.0 V is applied to the combination. What is the equivalent resistance of the parallel circuit? What is the total current in the circuit?
*February 25, 2009*

**physics**

A 16.0 ohm and a 24.0 ohm resistor are connected in parallel. A difference in potential of 32.0 V is applied to the combination. What is the equivalent resistance of the parallel circuit? What is the total current in the circuit?
*February 25, 2009*

**Physics**

The nucleus of an atom has a charge of 65 protons. (a) What are the direction and magnitude of the electric field at 4.9 x 10^-10 m from the nucleus?
*February 8, 2009*

**physics**

d would be 1/4 * F qA and d would be 6 * F
*January 27, 2009*

**physics**

Two charges, qA and qB, are separated by a distance, d, and exert a force, F, on each other. Analyze Coulomb's law and answer the following questions. What new force will exist if d is cut in half? What new force will exist if qA is tripled and d is doubled?
*January 27, 2009*

**physics**

A positive charge of q = 2.6 µC is pulled on by two negative charges. As shown below, one, −2.0 µC, is 0.050 m to the north and the other, −4.0 µC, is d = 0.029 m to the south. What total force is exerted on the positive charge?
*January 22, 2009*

**Home School. PLEASE HELP ME!!**

2. is c HOW
*January 19, 2009*

**physics**

Two identical positive charges exert a repulsive force of 6.6 multiplied by 10^-9 N when separated by a distance of 5.8 multiplied by 10^-10 m. Calculate the charge of each.
*January 13, 2009*

**Physics**

A student librarian picks up a 2.2 kg book from the floor to a height of 1.10 m. He carries the book 7.9 m to the stacks and places the book on a shelf that is 0.35 m above the floor. How much work does he do on the book?
*December 15, 2008*

**physics**

A force of 291.0 N is used to push a 140 kg mass 30.0 m horizontally in 3.00 s. Calculate the power developed in kW.
*December 14, 2008*

**physics**

A 0.105-kg hockey puck moving at 20 m/s is caught and held by a 77-kg goalie at rest. With what speed does the goalie slide on the ice?
*December 7, 2008*

**physics**

A(n) 840-kg dragster accelerates on a race track from rest to 85 km/h in 0.90 seconds. (a) What is the change in momentum of the dragster? (b) What is the average force exerted on the dragster? (c) What exerts that force?
*December 3, 2008*

**physics**

Small rockets are used to make tiny adjustments in the speeds of satellites. One such rocket has a thrust of 35 N. If it is fired to change the velocity of a 72300 kg spacecraft by 64 cm/s, how long should it be fired?
*December 1, 2008*

**Chemistry**

CuSo4+BaCl
*May 27, 2008*

** novel**

In tale of two cities please answer these questions in chapters 11,12,13: 1-why did darnay decided to go back to paris? 2-"in the name of that sharp female born and called la guillotine why did you come to france" who said these words?to who and when? 3-defarge ...
*February 24, 2008*

**Algebra**

Thanks I didn't even think of that! I am however stuck on these problems, i know theres a lot though, any help would be great, but i can't seem to understand the complex numbers, thankyou! Simplify: 1.SquareRoot(-144) 2.SquareRoot(-64x^4) 3.SquareRoot(-13)*SquareRoot(-...
*February 8, 2008*

**Algebra2**

Complete parts a – c for each quadratic function: a. Find the y-intercept, the equation of the axis of symmetry and the x- coordinate of the vertex. b. Make a table of values that includes the vertex. c. Use this information to graph the function. 1. f(x) = 2x^2 2. f(x...
*February 8, 2008*

**Algebra2**

Simplify: 1.SquareRoot(-144) 2.SquareRoot(-64x^4) 3.SquareRoot(-13)*SquareRoot(-26) 4.(-2i)(-6i)(4i) 5. i^13 6. i3^8 7.(5 – 2i) + (4 + 4i) 8.(3 – 4i) – (1 – 4i) 9.(3 + 4i)(3 – 4i) 10.(6 – 2i)(1 + i) 11. (4i)/(3+i) 12. (10+i)/(4-i) 13. (-5 + 2i)(6...
*February 8, 2008*

**Algebra2**

I accidently posted the wrong thing, i will re-post the right assignment for help thankyou!!!
*February 8, 2008*

**Algebra2**

Complete parts a – c for each quadratic function. a. Find the y-intercept, the equation of the axis of symmetry and the x-coordinate of the vertex. b. Make a table of values that includes the vertex. c. Use this information to graph the function. 1. f(x) = 2x2 2. f(x) = ...
*February 8, 2008*

**Algebra 2**

accidently posted the wrong thing, i will re post the right assignment for help thankyou!!!
*February 8, 2008*

**math**

Thank you for the explanation, it will definetly help me with the other problems.
*September 23, 2007*

**math**

A rectangle has sides of 3x – 4 and 7x + 10. Find the expression that represents its perimeter.
*September 23, 2007*

**English**

"Don't overlook the small things". In other words, without that nail there would be no shoe.
*September 23, 2007*

**Dr.Bob (about finding the ml of ethanol)**

Since the solubility of sulfanilamide at 0 C is 14mg/mL, do I multiply 1.5mL and 14 to get how much sulfa will remain in the mother liquor?
*September 3, 2007*

**Dr.Bob (about finding the ml of ethanol)**

Using the volume 1.5mL of 95% ethyl alcohol that's required to dissolve 0.3g at 78 C, how do i find how much sulfanilamide that will remain in the mother liquor after the mixture is cooled to 0 C?
*September 3, 2007*

**reading**

what is the conflict,rising action,and climax in the face on the milk carton
*August 6, 2007*

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