Sunday
July 24, 2016

Posts by Brad

Total # Posts: 319

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

Social Studies
I need an idea for making a craft project that has to do with the Cherokee Indian Tribe. Thank you!
January 13, 2008

Algebra 2
What happens to the signs in an inequality when you multiply or divide on both sides by a negative?
January 9, 2008

English Hamlet
I am writing an essay based on Act 1 wheather Hamlet is really a hero. What heroic qualities or lack of make Hamlet a hero or not?
January 7, 2008

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