Sunday

August 28, 2016
Total # Posts: 322

**physics**

A bowling ball weighing 71.2 is attached to the ceiling by a 3.90 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, the speed of the bowling ball is measured at 4.20 .
*June 15, 2010*

**science**

a balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa?
*May 20, 2010*

**math**

From the information you've given, the only thing i can come up with is that the animals cost one dollar each since it's 100 dollars for 100 animals
*May 18, 2010*

**physics **

when you connect an unknown resistor across the terminals of a 1.50 V AAA battery having a negligible internal resistance, you measure a current of 18.0 mA flowing through it .A)what is the resistance of the resistor. B) if you now place the resistor across the terminals of a ...
*May 11, 2010*

**physics **

a 40.0 ohm resistor and a 90.0 ohm resistor are connected in parallel, and the combination is connected across a 120 V dc line. A)what is the resistance of the parallel combination. B)what is the total current through the parallel combination. C)what is the current through ...
*May 11, 2010*

**physics**

a piece of wire has a resistance of R , it is cut into three pieces of equal length,and the pieces are twisted together parallel to each other. what is the resistance of the resulting wire in terms of R
*May 11, 2010*

**physics **

a 500.0 ohm resistor is connected in a series with a capacitor.what must be the capacitance of the capacitor to produce a time constant of 2.00 s
*May 11, 2010*

**physics **

a 1.5 kg box moves back and forth on a horizontal frictionless surface between two different springs. the box is initially pressed against the stronger spring compressing it 4.0 cm , and then is released from rest,A) by how much will the box compress the weaker spring,B) what ...
*April 27, 2010*

**chemistry**

what is the molar concentration of an aqueous NaOH solution when 45.0 grams are dissolved in water to make 100mL of solution
*April 27, 2010*

**chemistry**

Write a net equation for the reaction between aqueous solutions of Na2HPO4 and H2CO3.
*April 26, 2010*

**Algebra**

Without writing them all out, what is the number of subsets of set A = {tongue, ear, mouth, eye, nose, cheek, forehead, neck, shoulder}?
*April 15, 2010*

**physics**

Bumpers on cars are not of much use in a collision. To see why, calculate the average force a bumper would have to exert if it brought a 1200 kg car (a so-called "compact" model) to a rest in 15 cm when the car had an initial speed of 2 m/s (about 4.5 mph). Bumpers ...
*April 14, 2010*

**Physical Chemistry**

For part A, I'm plugging into the Arrhenius equation, ignoring A, and then dividing the 2 rates for each activation energy. I'm getting 1.027 for my particular set of numbers (Ea = 120 & 56) @ 293K. This isn't correct though.
*April 1, 2010*

**geometry**

What is the volume of a cone with a radius of 3 and a height of 19?
*March 16, 2010*

**trig**

how do you simplify "[sin(x)+tan(x)]/[1+sec(X)]"
*March 15, 2010*

**Physics**

An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at release, and maximum ...
*February 22, 2010*

**physics**

Also, I found horizontal velocity = 25m/s, but I don't know where to go from there.
*February 22, 2010*

**physics**

An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at release, and maximum ...
*February 22, 2010*

**Chemistry**

5,17
*February 20, 2010*

**survey math**

11110 base 2 = (?) base 10
*February 19, 2010*

**Math**

What do you mean?
*February 5, 2010*

**Math**

Solve each literal equation for the indicated variable 2x-3y=4 for x The answer is suppose to be x=3/2y+2 I don't understand how you do this problem?
*February 5, 2010*

**Math**

Solve each literal equation for the indicated variable. 4x-5y=10 for y (the answer is y=4/5x-2) How do you solve this?
*February 5, 2010*

**Physics II**

A block begins to slide down a ramp after being elevated to an angle of 55 degrees. What is the coefficient of static friction?
*February 2, 2010*

**10th grade english**

how the tone and purpose of each essay is different?
*December 21, 2009*

**10th grade english**

Write an essay comparing Baldwin's account of the Titanic with Rosenthal's account of his visit to Auschwitz.In your paragraph, explain how the tone and purpose of each essay is different. Support your argument with at least one example from each essay.
*December 21, 2009*

**calculus**

find the general solution x^2-2(e^y)dy/dx = y^3+e(x^2) iam getting the y^3 dx when i do seperation of variables how do i deal with this.
*December 16, 2009*

**calculus**

find the general solution x^2-2(e^y)dy/dx = y^3+e(x^2) iam getting the y^3 dx when i do seperation of variables how do i deal with this.
*December 16, 2009*

**math**

I'm thinking of TWO numbers between 1 and 4 and so are you, what are the odds that we will have ATLEAST 1 number in common?
*December 13, 2009*

**7th grade science**

heterozygous dominant
*December 13, 2009*

**7th grade science**

dominant
*December 13, 2009*

**Calc**

Express the integral as a limit of Riemann sums. Do not evaluate the limit. ∫_1^3 x/(2+x^5) Ans: lim(n→∞)∑_(i=1)^n ?
*December 12, 2009*

**spanish 2**

doblar- to turn conducir- to drive derecho-right izquierdo-left la esquina- corner la calle- street el coche/carro-car la ciudad- city el pueblo- town pasar-to pass parar- to stop el cinturon de seguridad- seatbelt la tienda-store el supermercado- supermarket la iglesia- ...
*December 4, 2009*

**math**

add 5/4x and 1/8x then u get 11/8=11/8+x subtract 11/8 to the other side which leaves 0=x
*November 17, 2009*

**Economics**

Suppose that a movie theater owner faces the demand curve given by P=10-.001Q where P is the price of a ticket in dollars and Q is the number of tickets sold per week. Suppose that all the cost associated with the theater other than film costs do not vary with the number of ...
*November 14, 2009*

**spanish**

despues de las clases= after the classes me gusta= i like
*November 12, 2009*

**math**

how do use approximation to tell which fraction is greater
*November 11, 2009*

**law ethics in medicine**

I work in a hospital and have to be trained in HIPAA. Every employee in a hospital that has access to patient info has to be trained since HIPAA has to do with patient confidentiality
*November 7, 2009*

**Creative Writing**

you want something thats going to grab the readers attention. That the point of it. Think of a sentence that defines your topic and grabs my attention
*October 12, 2009*

**Geography**

haha colten wrong answer
*October 11, 2009*

**physics**

thanks! I forgot the formula >.<
*October 7, 2009*

**physics**

How does one go about solving this? A skateboard rider starts from rest and accelerates at a constant +.50 m/s^2 for 8.4s. What is the riders displacement?
*October 7, 2009*

**Calculus**

Basically its x+3=3x-5 so subtract x from 3 which gives u 2x then add 5 to the other 3 to balance it out which leaves u 2x=8. Divide each side by 2 and ur g is 4
*September 28, 2009*

**Physiology**

the mechanisms responsible for triggering cardiac hypertrophy are still a mystery. Hypothesize about possible signals and the steps that might be involved to cause postprandial cardiac hypertrophy in pythons.
*June 24, 2009*

**Physiology**

The amount of DNA (measured in ng per mg ventricle) decreased. One nucleus is present in each vertebrate myocardial cell (each cell is mononucleated). Explain how it is possible that a decrease in mass-specific DNA concentration indicates growth of ventricular tissue.
*June 24, 2009*

**Physiology**

Of what physiological advantage would increased stroke volume (and its related effect on cardiac output) be to an animal that just ate a meal?
*June 24, 2009*

**Math**

I need to find the vertex and make a graph using quadratics. y=xsquared+11x+10
*May 5, 2009*

**chemistry**

i just have a question about le chatelier's principle lets say you have: A(g) + B(s) --> C(g) + D(g) does adding more of B which is a solid shift it to the right? or will it have no effect because it is a solid? thanks
*April 19, 2009*

**To: Reiny**

I don't understand how there would be 48 cards left if you took out 3 cards, wouldn't you have 49 cards?
*April 11, 2009*

**MATH**

what is the probability of getting 3 of a kind in poker? 3 of a kind is: Any three cards of the same rank with two other different cards. I know the answer it suppose to be 54912/2598960 But how do you get that?
*April 11, 2009*

**MATH**

what is the probability of getting a royal flush in poker? I realize it is 4/C(52,5), but what are the combinations for the numerator?
*April 10, 2009*

**polymers**

is polymethylpentene monomer's toxic?
*April 6, 2009*

**Polymers**

What is the molecular formula for polymethylpentene?
*April 5, 2009*

**Polymers**

I have tried looking at those sites before, but it still doesn't mention what I'm looking for.
*April 4, 2009*

**Polymers**

Is polymethylpentene flammable? Does this chemical effect our health in anyway?
*April 4, 2009*

**CHEMISTRY: polymers**

Polymethylpentene are there any safety concerns, toxicity concerns about the polymer? any environmently concerns? is the monomer toxic, is the polymer toxic?
*April 4, 2009*

**MATH:Solving with 3 variables**

03p-0.25r-03q=0 0.8p-0.6r-0.05q=0 0.9p-0.15r-0.65q=0 I don't know if this help but i think p+q=1.
*March 31, 2009*

**scientific notation**

Express the answer in scientific notation to two decimals unless requested otherwise. A company produced 2,600,000 small appliances in one year and made a profit of $6,690,000. What was the profit on each appliance?
*March 20, 2009*

**MATH!!!**

If the odds in favour of Neil beating Joe in a checker game are 5 to 4. What is the probability that Joe will win an upset victory in a best-of-five checker tournment?
*March 10, 2009*

**Chemistry**

Why are carboxylic acids and phenols acidic?
*February 28, 2009*

**Science**

because life's organisms also live in water and everything has to survive with water in order that there blood may flow, the cells may live, and things function
*February 14, 2009*

**Physics**

A tsunami, a great ocean wave, travels a distance of 7.2x10^6m in 2.88x10^4 what is the average speed of tsunami?
*January 27, 2009*

**Chem**

If 390 mL of 0.0410 M aqueous NaI(aq) and 1.36 g of liquid Br2 are reacted stoichiometrically according to the equation, what mass (g) of NaI(aq) remained? 2 NaI(aq) + Br2(l) ¨ 2 NaBr(aq) + I2(s) Molar Mass (g) NaI(aq) 149.89 Br2 159.81 Molar Volume (L) 22.400 at ...
*January 13, 2009*

**chemistry**

1) So since we are just filling it up to 200ml the volume does not change so it has the SAME concentration? 2) so if we add more water which increases the volume making it (mol / L <-- increased) resulting in a LOWER concentration?
*January 12, 2009*

**chemistry**

1) To prepare a 200 mL of aqueous stock solution X, you transferred 50 mL of a known concentration solution into a 200 mL volumetric flask. If you realize that the volumetric flask was contaminated with water droplets after you cleanly transferred the known concentration ...
*January 12, 2009*

**government**

What would be a good grabber for a DBQ on the federalists and anti-federalists
*January 11, 2009*

**managerial economics**

As a manager, how might your pricing strategy differ if you are operating in a perfectly competitive market versus a monopoly market?
*December 11, 2008*

**science**

How does density affect the speed of sound?
*December 10, 2008*

**physics**

Haha ok i will for sure remember that
*November 4, 2008*

**physics**

thank you so much
*November 4, 2008*

**physics**

a person in a car traveling at 18meters/s drops a cherry pit out of the window 1meter above the ground. A. how far horrizontal will the pit hit hit ground from the initial dropping point ? B. if the car continues to travel at the same speed where will the car be in relation to...
*November 4, 2008*

**intro to statistics**

Use Norminv in excel(%, cup size, stanard dev ) then round to the 2nd decimal hope this helpful
*October 29, 2008*

**algebra**

you have four plates that have a radias of 60 cm. if you break the plates how much area will there be?
*October 24, 2008*

**math**

4/21 divided by 3 1/2
*October 23, 2008*

**math**

4*6*9*5*8*7*5*5*6*5*4*5*4*5*4*/123456.667- "the square root of 74"
*October 22, 2008*

**Algebra**

A rectangular fence has a perimeter of 1080 feet. The length is 3 feet more than twice the width. I need to know the dimensions and how to figure it out.
*October 21, 2008*

**Algebra**

A rectangular fence has a perimeter of 1080 feet. The length is 3 feet more than twice the width. What are the dimensions?
*October 21, 2008*

**math**

Teresa has 4 flower pots in 4 different designs. She likes to display her flower pots in different positions on her window sill. How many different ways can she place her flower pots.
*October 9, 2008*

**math question**

t=rv so you would replace the t with a 4 and the v with an 8 so it would equal out to 4=r(8)divide by 4 on both sides and u get r=2 W=xyz so replace.... W=2x3x6, 6x6, then ur answer is w=36 C=ab, C=(.65)(1.9), multiply and u get C=1.235 u just have to replace/substitute the ...
*October 6, 2008*

**Science**

fire is not a living organism. It has means of life except it burns faster with more oxygen. Fire does not support any lifestyle functions. It is only an element brad
*September 15, 2008*

**History**

Please help me revise my History essay. The Inevitable Decision: America’s Entry into WWI Words are cheap. The infamous maxim has survived throughout history and its value has been demonstrated on a multitude of occasions. One situation that is particularly fitting is ...
*May 27, 2008*

**Bio**

anyone else have any ideas. that is not working well either
*April 10, 2008*

**Bio**

I was doing some work on the Fluid Mosaic Model. I need to list the parts and functions. I have the following parts; glycolipid, glycoprotein, carbohydrate chain, phospholipid bilayer, integral protein, cholesterol, peripheral protein, and filaments of the cytoskeleton. I can ...
*April 10, 2008*

**Brain Teaser**

this is 2 years late but maybe one day someone will find this handy. It is circles under the eyes
*March 19, 2008*

**Brain Teaser**

looking for the same one
*March 19, 2008*

**microeconomics**

biuuhi ujghu_ig
*February 29, 2008*

**spanish sra mcguin**

4. prefiere 5. Puede 6. Pueden
*February 20, 2008*

**spanish sra mcguin**

yes it is, i checked in the dictionary
*February 20, 2008*

**spanish sra mcguin**

Hey! I'm in spanish 3, i can help you. 1. Querremos 2. Quieres 3. Pienso 7. Prefieren 8. Almuerza 9. Pensamos I realy didnt mean to give out the answers, but its hard to explain. You just really have to watch the AR/ER/IR verb endings and your stem changes like e to i or o...
*February 20, 2008*

**Chemistry-Dr. Bob**

Thank-you for your help. I did it the second way. The mistake I did make was that I divided when I should have multiplied. I appreciate your help in helping me find my error.
*February 20, 2008*

**Chemistry-Dr. Bob**

Does this help? Calculate the molarity of the HCl from the volumes of acid and base and the molarity of the NaOH. L HCl=0.025 L NaOH=0.06705 NaOH M=0.015000
*February 20, 2008*

**Chemistry**

Calculate the molarity of the HCl from the volumes of acid and base at equivalence point and the molarity of the NaOH. L HCl=0.025 L NaOH=0.06705 NaOH moles M=0.015000
*February 20, 2008*

**Chemistry**

Can someone please tell me if I did this correctly? Calculate the molarity of the HCl from the volumes of acid and base and the molarity of the NaOH. Use the following equation: (molarity of acid)x(volume of acid)=(molarity of base)x(volume of added base) equivalance point=...
*February 20, 2008*

**Chemistry**

Calculate the molarity of the HCl from the volumes of acid and base and the molarity of the NaOH. Use the following equation: (molarity of acid)x(volume of acid)=(molarity of base)x(volume of added base) equivalance point=number of mL of base to an acid 1mL=0.001L HCl volume=...
*February 20, 2008*

**chemistry**

Calculate the molarity of the HCl from the volumes of acid and base and the molarity of the NaOH. Use the following equation: (molarity of acid)x(volume of acid)=(molarity of base)x(volume of added base) equivalance point=number of mL of base to an acid 1mL=0.001L HCl volume=...
*February 19, 2008*

**chemistry**

My problem is calculate the molarity of HCl and NaOH. (molarity of acid)x(volume of acid)=(molarity of base)+(volume of added base) HCl=acid NaOH=base HCl volume = 25mL=0.025L NaOH=67.05mL=0.06705 molarity = moles of solute Liters of a solution M=0.015000 moles of NaOH 0....
*February 19, 2008*

**Chemistry**

I would say CH3OH too because it has oxygen and oxygen produces heat i think but I'm no chemist brad
*February 16, 2008*

**Physics**

two narrow slits 0.12 mm apart. Light of wavelength 550n illuminates the slits, causeing an interference pattern on a screen 1.0 m away. Light from each slit travels to the m = 1 maximum on the right side of the central maximum. How much farther did the light from the left ...
*February 10, 2008*

**Chemistry**

Can someone tell me if this makes any sense or if I need to start over. I am not sure if it even answers the question. Why is the benzene molecule represented as “a flat cyclohexane with a ring inside?” The benzene molecule is represented as “a flat cyclohexane ...
*February 10, 2008*

**US History**

Looks good to me. Writing this same essay right now.
*January 22, 2008*