Saturday

April 19, 2014

April 19, 2014

Total # Posts: 2,499

**Grade 12 University physics**

A 1.2kg block is dropped from 48cm above a spring in equilibrium. The force constant for the spring is 124N/m. Calculate the maximum compression in the spring.

**Maths**

What is the answer for these questions:- 1) Indefinite Integrals gcx) = (8 + 39x ^ 3) / x 2) Indefinite Integrals hcu) = sin ^2 (1/8 u) 3) Evaluate x ( 8 - 5 x ^2) dx Thank you

**Precalculus**

Thanks! That makes sense. One step closer to passing my final exam tomorrow!

**Precalculus**

The letters r and è represent polar coordinates. Write the equation using rectangular coordinates (x,y). r=1+2sinè I know that I have to use something along the lines of x=rcosè and y=rsinè, but I'm stuck when I try to figure it out. Can someone...

**Geometry**

Given ABCD AC=28 and AE=3x-7 find the value of x

**Maths**

what is the answer to this question? Indefinite Integrals fct) = 14 sin (7) + 5e ^ - 15t

**Chem**

how do you find the boiling temp of 2m of c6h12o6

**Geometry**

HELP! Two Chords AB and CD, are equidistant from the center of a circle. AB=3x+7 and CD=27-x. Solve for x and find the lengths of AB and CD

**child care**

thank you very much!

**child care**

A strategy for health promotion among infants, toddlers, and young children focuses on educational programs, physical, fitness, activities and.. A. family panning B Tabacco, alcohol,anddrug use. c. Nutrition D mental health and mental disorders. Im not sure , but I think is B....

**child care**

which of the following taxes must be paid only by the employer? A Federal income B State C Federal unemployment D Fica Thanks

**Physics**

A 1.45 mol sample of an ideal gas (γ = 1.40) is carried through the Carnot cycle described in the figure below. At point A, the pressure is 28.5 atm and the temperature is 600 K. At point C, the pressure is 1.00 atm and the temperature is 400 K. How do I get the pressure ...

**language**

What is the main theme in Death on the Ice by Cassie Brown?

**Random Question**

Posted by Alex on Saturday, June 4, 2011 at 12:55pm. Based on readings from the first 20 chapters of "Invisible Man", what does the narrator mean when he refers to himself as "invisible"? Is it because of all the situations he been in and no one really seei...

**Random Question**

So how would you say one of the examples of the journey to solitude reflect a understanding of his own "invisibility"?

**Random Question**

Based on readings from the first 20 chapters of "Invisible Man", what does the narrator mean when he refers to himself as "invisible"? Is it because of all the situations he been in and no one really seeing him or his feelings? HELP PLEASE

**Physics **

A 5 gram bullet is fired and embeds into a 30 gram block of wood resting on a 2 m tall post. After the collision, the piece of wood lands 15 meters from the base of the post. Find the initial speed of the bullet.

**Physics **

A 5 gram bullet is fired and embeds into a 30 gram block of wood resting on a 2 m tall post. After the collision, the piece of wood lands 15 meters from the base of the post. Find the initial speed of the bullet.

**Math**

A cylindrical tank with radius 6 in. and length 12 in. is placed on its lateral face with bases perpendicular to the ground and then filled with water to a height of 9 in. When the cylinder is rotated to sit on one of its bases, the height of the water will be a+bsqrc --------...

**math**

There are 900 three-digit integers. The number of three-digit integers having at least one repeated digit is also a three-digit number. If that number is represented by abc where each letter is a digit, compute a-b+c (I came up with 252 integers so when I did the computation i...

**chem**

Which metal will react spontaneously with Cu^2+(aq) at 25 degree celcius? between Ag, Au, Mg, and hg?

**chem**

Which metal will react spontaneously with Cu^2+(aq) at 25 degree celcius?

**Math**

A container in the shape of a rectangle solid with the dimensions of 4 X 5 X10 is placed so that its height is 10. Water fills the container to a heaight of 6. The container is then turned so that the base dimensions are 4 X 10. Determine the height of the water in the container.

**Statistics**

Which of the following is NOT sensitive to extreme values? A) the range B) the standard deviation C) the interquartile range D) the coefficient of variation I pick B the standard deviation

**geometry**

If given 2 spheres, if the volume of the first sphere is 3/4 and the volume of the second sphere is 36, which is the relation of the second radius to the first?

**computer sciece**

I have a question, how do we find a Voltage, Current, Power if we use PSpice? I use the software to find all the Values but I don't know how to explain.

**pre cal**

what are the amplitude and period of the sinusoid y=6cosx+7sinx?

**Chemistry**

Stomach acid is 0.02M HCl. A 330mg antacid tablet is 41% magnesium hydroxide and 36.2% sodium Bicarbonate. What is the volume of acid that can be neutralized by one tablet?

**Chemistry**

Stomach acid is 0.02M HCl. A 330mg antacid tablet is 41% magnesium hydroxide and 36.2% sodium Bicarbonate. What is the volume of acid that can be neutralized by one tablet?

**algebra 1**

a landing airplane, moving in a straight line , passes over two points (p and q) which are 300 feet apart. when the airplane is above p, as seen from Q, its angle of elevation is 60 degress, and when above Q, as seen from p, its angle of elevation is 40 degress. at what distan...

**Math**

Find a vector with magnitude 1 that has the same direction as the following vector U= -3i+7j

**Economics**

Appalachian Coal Mining believes that it can increase labor productivity and, there-fore, net revenue by reducing air pollution in its mines. It estimates that the marginal cost function for reducing pollution by installing additional capital equipment is MC 40P where P repres...

**Social Studies**

What is the name of a Seminole home?

**math**

22+15= 37

**chem**

for my last two questions, i had Krypton as the element and 56.96 grams K3PO4. i need something to compare with

**chem**

A scientist wants to make a solution of potassium phosphate, K3PO4 for a lab experiment. How many grams of K3PO4 will be needed to produce 575ml of a solution that has a concentration of K+ ions of 1.4M.

**chem**

an empty container has a mass of 658.57g. It has a mass of 659.45g after it has been filled with nitrogen gas at a pressure of 790 torr and a temperature of 15 deg C. When the container is evacuated and refilled with a certain element at a pressure of 745 torr and a temp of 26...

**chem**

ethane gas, or dicarbon hexahydride, undergoes cmbustion to produce carbon dioxide gas and water vapor. A. What mass of the un named reactant is required to react with 2.2 moles of ethane? B. How amny molecules of the product with the smaller % composition of the non oxide com...

**chemistry**

2nd revision to the question, it is 7.62atm not 7.2atm, its now all correct on the question. sorry again Fluorine and krypton react to form binary compounds when a mixture of the two gases is heated to 500C in a nickel reaction vessel. A 100mL nickel container is filled with f...

**chem**

Now the numbers in the question are correct, (Fluorine = 10.10atm Krypton = 1.24atm). Please help. Fluorine and krypton react to form binary compounds when a mixture of the two gases is heated to 500C in a nickel reaction vessel. A 100mL nickel container is filled with fluorin...

**chem**

don't have the answer but to help those trying to help, it should be 10.10 atm for Fluorine, and 1.24 atm for Krypton.

**Trigonometry**

How would you find the both primary solutions to 3cos(2x) = 2.5

**psychology**

1.Attribution theory 2.Fundamental attribution error 3.Foot-in-the-door phenomenon

**psychology**

please help Create an example for each of the four terms as it applies.

**math**

Find the general term: 4/3, 7/7, 10/11, 13/15,...

**psychology Check My answers please and help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!**

please help!!!!!!!!!!!

**psychology**

please can someone help me!!!!!!!!!!!!!!!

**psychology**

please check my answers...and help me if i got wrong Thanks According to social psychology, what terms are being described in the situations below? Social Facilitation Social Loafing Group Think Deindividuation 1-The newscaster reported that a vehicle carrying cash money was i...

**Math(Probability)**

An environmental survey contained a question asking what respondents thought was the major cause of air pollution in this country, giving the choices “automobiles,” “factories,” and “incinerators.” Two versions of the test, A and B, were used. Let...

**Math(Probability)**

Students took n = 35 samples of water from the east basin of Lake Macatawa and measured the amount of sodium in parts per million. For their data, they calculated notation bar x= 24.11 and s^2= 24.44. Find an approximate 90% confidence interval for μ , the mean of the amo...

**physics**

My question is in the link below: img828.imageshack.us/img828/7386/physicsch3581.png

**psychology**

ok, Thank You...

**psychology**

please check my answer What are the characteristics of the personality disorders? Answer: The characteristics of the personality disorders are the Paranoid, Schizoid, Antisocial, Borderline, Histrionic, Narcissistic, Avoidant, Dependent.

**psychology**

ok, thanks...

**psychology**

please can someone help me? What are the characteristics of the following anxiety disorders? ◦ Generalized Anxiety Disorder ◦ Obsessive-Compulsive Disorder ◦ Phobic Disorder ◦ Specific Phobia Disorder

**world history **

help please.... why was the International Organizations important In history? Whay was the Reconstruction of Europe and Japan important in history?

**world history **

thanks...

**world history **

please can Someone help me on this... What was the causes, what happened, and its final outcome of the Yom Kippur war 1973?

**Math**

Rewrite the given equation using the substitutions x=rcos@ and y=rsin@. (@=theta) Simplify your answer.

**Art History **

thank you Ms.sue (:

**Art History **

Help please... What do you believe the amphitheater in Pompeii reveals about the culture that created it?

**calc **

Find the corresponding rectangular coordinates for the polar point (4, -/6).

**Calc **

Consider the line passing through the points (2, 1) and (-2, 3). Find the parametric equation for y if x = t + 1.

**Art History **

thanks

**Art History **

pompeii colosseum do you have that site please?

**Art History **

I need a site so I can choose one and read about that so I can do my assignemt cause my assignmnet says this now choose your favorite of the architectural site at Pompeii. In 250-300 words, describe details of it and be sure to address the following: ¡What do you b...

**Art History **

In my art history assignmnet it says this now choose your favorite of the architectural site at Pompeii. So please help me to find a pompii site. or give me that wibsite. Thanks

**world history **

ok thanks so much (:

**world history **

so this would be okay?

**world history **

I think I cant use the websit you give me cause my assignment says this Remember to provide proper citations for websites that you use and to stay away from online study guides and encyclopedias.

**world history **

I need help in the Yom kippur war 1973. In one-two paragraphs, explain the event that you chose. Be sure to mention those directly involved in the event, its causes, what happened, and its final outcome. and it says stay away from online study guides and encyclopedias. So I ne...

**Math(Probability)**

The joint p.m.f. of X and Y is f(x, y) = 1/6, 0 ≤ x + y ≤ 2, where x and y are nonnegative integers. (a) Sketch the support of X and Y. (b) Record the marginal p.m.f.’s f1(x) and f2(y) in the “margins.” (c)Compute Cov(X, Y). (d)Determine ρ,the ...

**Math**

A consumer buys n light bulbs, each of which has a lifetime that has a mean of 800 hours, a standard deviation of 100 hours, and a normal distribution. A light bulb is replaced by another as soon as it burns out. Assuming independence of the lifetimes, find the smallest n so ...

**trig**

use a sum or difference identity to find an exact value cos pie/12

**trig identies 5.3 &5.4**

cos pie/12

**trig identies 5.3 &5.4**

use a sum or difference identity to find an exact value pie/12

**chemistry**

how many grams of NH3 are in 250 ml of a 20% (w/v) ammonia solution

**pyschology **

I need an idea to get started please help me Thanks 1.First, choose two personality disorders: I'll choose Paranoid or you can choose one for me please •Schizoid •Paranoid •Antisocial •Borderline •Histrionic •Narcissistic •Avoidant •...

**pschology **

Ok thank you. I'll look it up and other disorders too and see if I can answer the questions but if still don't get them i'll came back.

**pyschology **

I'll choose the Conduct Disorder but I don't know about the characteristics of this disorder.

**pschology **

Just answering the questions for me because I dint know what to do so thanks

**pschology **

Plaes help me with this I need it as soon as possible... Thanks 1.Choose one of the disorders listed below: •Tourette’s Syndrome •Oppositional Defiant Disorder •Conduct Disorder •Anxiety Disorder •Bipolar Disorder You can choose one for me and do ...

**psychology**

ok I'll choose the Paranoid and Schizoid

**Specific heat**

When 1500 joules of energy is lost from 0.12kg object the temperature decreases from 45 to 40 What is the specific heat of this object ? Of what material is the object made?

**math**

The lifetime (In Years) of Manufactured product is Y=5X^0.7, where X has an exponential distribution with mean 1. Find the distribution function of PDF Y.

**Math(Probability)**

Let X be N(0,1) find the p.d.f of Y=|X|, a distribution that is often called the half normal.

**Calculus**

Find the equation of the line tangent to the graph of y=4 e^x at x=2. I always get confused with tangent lines I worked this out to be 4e^x(x-2)+4e^2 but the program i have to submit it to says its wrong.

**Chemistry**

What is the final temperature when 750 J of energy is added to 9.0 g of ice at 0.0 degress C?

**math**

hello i need help with system of equations theres 3 only thank you 2x+3y-17 3x+y=31 2(x-3y)=24 y=3x-2 2(x+4)=24 x+y=17

**math**

hello i need help with system of equations theres 3 only thank you 2x+3y-17 3x+y=31 2(x-3y)=24 y=3x-2 2(x+4)=24 x+y=17

**math **

hello i need help with system of equations theres 3 only thank you 2x+3y-17 3x+y=31 2(x-3y)=24 y=3x-2 2(x+4)=24 x+y=17

**Algebra**

What can you multiply to get 5 and add to get 6 (two numbers both the same numbers)??? Help

**college chemistry**

If the equilibrium constant (Keq) equals 9.12x1012 for the following reaction between strontium and magnesium: Sr(s) + Mg2+(aq)<==> Sr2+(aq) + Mg(s) Calculate Eo for a strontium=magnesium battery.

**Essay conclusion**

Thanks!

**Essay conclusion**

I am trying to write a conclusion for my essay about connecting my author's life to her books. Can anyone give me some tips on how to write a conclusion without simply restating what I said in the introduction? Thank you!

**science**

Never smell the chemical by sticking your nose right over the beaker, instead, you should gently waft the vapors toward your nose.

**college chemistry**

If the equilibrium constant (Keq) equals 9.12x1012 for the following reaction between strontium and magnesium: Sr(s) + Mg2+(aq)<==> Sr2+(aq) + Mg(s) Calculate Eo for a strontium=magnesium battery.

**science**

Choose one yourself, no one is going to do your homework for you. Go ahead and think about it, and we can look at what you come up with. I'm going to give you a hint: there is pretty much no wrong answer to this, it's just whatever you make up.

**math **

Okay, for the first one, just do the (x-3)^2 like you normally do, then multiply everything by -2. with the second one, do (x-4)^2 like you normally do, then multiply by -1. Now, just add 3.

**math **

I was just writing it out, it's the same thing you did when you got x^2, I was just showing multiplying the two x's. And it it three terms when you add like terms together. I'll continue with what I did before. x^2 -3x -3x +9. You basically did the same thing, only...

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