Sunday
February 14, 2016

Posts by Brad

Total # Posts: 298

Math
If there are 24 books on a shelf and 2/3 are fictional, how do I solve to to find out the number that are fictional
February 10, 2016

physics
Position vector r⃗ has magnitude of 15.0 m and direction angle 250 ∘. Find its components. Find the components, magnitude, and direction of the vector −2r⃗ . Where do I start?
January 27, 2016

Math CALCULUS HELP PLEASE
**RESOLVED** For any future calculus students who get stumped with this (relatively simple) problem: You must have 1150 mL of air in your lungs AT MINIMUM. That means at your local minimum in your cos graph the y-value must be 1150, which makes the last part of your equation (...
January 19, 2016

Math CALCULUS HELP PLEASE
I think it may be: V(t)=1600cos(pi x t)+1150 But a previous tutor said the "+1150" was incorrect on this website so I am not sure.
January 19, 2016

Math CALCULUS HELP PLEASE
Tidal volume is the volume of air displaced in the lungs between inhalation and exhalation (the amount of air in a breath). The residual volume is given by the amount remaining in the lungs even after the deepest exhalation (i.e. the minimum amount of air remaining in the ...
January 19, 2016

Finite Math
An urn contains 8 blue marbles and 7 red marbles. A sample of 6 marbles is chosen from the urn without replacement. What is the probability that the sample contains at least one blue marble?
November 10, 2015

Chemistry
1) A saturated solution of the slightly soluble salt MA3 is 1.4 ×10^–3 M in MA3. What is its Ksp value? 2) A 20.0 mL sample of NaIO3 was treated with an excess of KI and HCl and the iodine produced titrated with 0.05125 M Na2S2O3. 19.35 mL of Na2S2O3 solution were ...
November 9, 2015

Chem
1) A saturated solution of the slightly soluble salt MA3 is 1.4 ×10^–3 M in MA3. What is its Ksp value? 2) A 20.0 mL sample of NaIO3 was treated with an excess of KI and HCl and the iodine produced titrated with 0.05125 M Na2S2O3. 19.35 mL of Na2S2O3 solution were ...
November 8, 2015

thermo
an open container with 10L of water at 1 bar and 20 C is used for cooling electronic parts.Each electronic part has a mass of 01.kg and an average specific heat of 0.14 kJ/kg-K. The electronic parts are initially at 300 degrees Celcius and are required to be cooled to 80 ...
September 29, 2015

Math
If 2/3 pound of candy costs $7 how much does 1 pound of candy cost?
September 23, 2015

Math
There are three times as many chickens than pigs on a farm. All the chickens and pigs have 2400 feet all together. How many more chickens than pigsare there?
September 22, 2015

Geology
rate of change
September 13, 2015

Geology
Look up and review these terms and what a graphical representation or formula would look like fro the relationships to: rate of change
September 13, 2015

Math
What is the midpoint of the line segment whose endpoints are (-8, 12) and (-13, -2)?
April 24, 2015

physics
how to determine the net electric force on q3 q3= + 10 uC distance from q3 to q2 =40 cm distance from q1 to q2 =50 cm distance from q1 to q3 = 30 cm q2 =-80 uC q1=+50 uC
April 19, 2015

chemistry
What is the ph of 0.25 M tartaric acid? Ka=2.5*10^-5M
March 1, 2015

physics
Two masses of 3.25 kg each, connected by a string, slide down a ramp making an angle of 31° with the horizontal. The coefficient of kinetic friction between m1 and the ramp is 0.31. The coefficient of kinetic friction between m2 and the ramp is 0.17. Find the magnitude of ...
February 27, 2015

Physics
Two blocks, stacked one on top of the other, slide on a frictionless horizontal surface. The surface between the two blocks is rough, however, with a coefficient of static friction equal to 0.50. The top block has a mass of 2.6 kg, and the bottom block's mass is 4.0 kg. If...
February 27, 2015

physics
A block with a mass of 4.25 kg is placed at rest on a surface inclined at an angle of 44.8° above the horizontal. The coefficient of static friction between the block and the surface is 0.520, and a force of magnitude $F$ pushes upward on the block, parallel to the ...
February 24, 2015

Physics
Two blocks, stacked one on top of the other, slide on a frictionless horizontal surface. The surface between the two blocks is rough, however, with a coefficient of static friction equal to 0.50. The top block has a mass of 2.6 kg, and the bottom block's mass is 4.0 kg. If...
February 22, 2015

physics
A fire helicopter carries a 664 kg bucket of water at the end of a 24.9 m long cable. Flying back from a fire at a constant speed of 44.2 m/s, the cable makes an angle of 41.6o with respect to the vertical. Determine the force of air resistance on the bucket.
February 17, 2015

physics
When you lift a bowling ball with a force of 60.7 N, the ball accelerates upward with an acceleration a. If you lift with a force of 69.3 N, the ball's acceleration is 1.99a. Calculate the weight of the bowling ball.
February 15, 2015

art
3.Is D.
February 5, 2015

physics
Initially, a particle is moving at 5.45 m/s at an angle of 38.5° above the horizontal. Four seconds later, its velocity is 6.24 m/s at an angle of 54.3° below the horizontal. What was the particle's average acceleration during these 4.00 seconds in the x-direction...
February 4, 2015

Physics
A charge of 8.0 x 10^(-6) is located inside a sphere. What is the flux through the sphere? Im not sure if this would be just the charge over elipson0. it seems to easy...
February 3, 2015

College Algebra
A total of $14,000 is invested in 3 accounts earning 3%, 4%, and 5% annual interest. The combined interest for one year is $539. If the amount invested at 5% is three times the amount at 4%, find the amount invested at 3%.
December 3, 2014

algebra
P = 2L + 2W 34 = 2(W + 7) + 2W
November 27, 2014

Algebra
x+y = 156 x = y+28
November 27, 2014

Physics
Thank you Henry! You did a really nice job and it helped me a lot!! (:
November 26, 2014

Physics
4.82 kJ work is done by a worker pulling a crate across the deck of a ship at a constant speed of 7.82 m/s by a 453 N force. The rope is being pulled at a 37.0 degree angle to the deck. a)How far was it pulled? b)What is the friction force? c)What is the work done against ...
November 26, 2014

science
all alkalies are bases but all bases are not alkalies
October 18, 2014

Chemisty
Brad
September 15, 2014

Math, Physics
A soccer ball is kicked from the ground at an angle of è = 46 degrees with respect to the horizontal. The hang time of the ball is tm = 1.9 s. What is the total horizontal distance traveled by the ball in meters?
September 11, 2014

Physics
What is the magnitude of the electric force between a proton and an electron when they are at a distance of 2.63 Angstrom from each other?
August 29, 2014

Physics Electricity and Magnetism
F=Eq q=F/E q=2.34^-4/6620
August 29, 2014

intro to computers
There is no way to enforce security on a USB
May 31, 2014

math
what integer represents a 500 dollar deposit
May 19, 2014

Algebra 2
Yoko threw a stone upward at a speed of 10m/sec while standing on a cliff 40 m above ground. A. What was the height of the stone after 3 seconds? B. Estimate how long it took for the stone to touch the ground
February 6, 2014

Physics
The speed of light in polythene is 1.99 x 108 m/s What is the index of refraction of polythene
January 20, 2014

physics
An inductor (L = 405 mH), a capacitor (C = 4.43 µF), and a resistor (R = 400 ) are connected in series. A 50.0 Hz AC generator produces a peak current of 250 mA in the circuit. (a) Calculate the required peak voltage ΔVmax. V (b) Determine the phase angle by which ...
December 1, 2013

Intro to computers
The USB stick is formatted with a fat 32
November 14, 2013

Math
Rose has a square garden with an area of 49 square feet. She wants to put a fence around her garden. How much fencing does she need to purchase?
October 12, 2013

CALCULUS
using d^2(h/dt^2=−g+k(dh/dt^2, find an expression for the terminal velocity in terms of k and g? g is the acceleration due to gravity, k is a constant, h(t) is the height of the falling object, dh/dt is its velocity, and d^2(h)dt^2 is its acceleration. And can you ...
October 7, 2013

Calculus
Could you explain as to how you got that answer?
October 7, 2013

Calculus
using d^2(h)/dt^2=−g+k(dh/dt)^2, find an expression for the terminal velocity in terms of k and g? g is the acceleration due to gravity, k is a constant, h(t) is the height of the falling object, dh/dt is its velocity, and d^2(h)/dt^2 is its acceleration.
October 7, 2013

physics
Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 9.7-kg projectile from rest to a speed of 6.5 × 103 m/s. The net force accelerating the projectile is 8.0 × 105 N. ...
June 24, 2013

math
You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to $230,000, and Suite Dreams can borrow money at 13% ordinary interest. How much can be ...
June 22, 2013

math
Varsity Press, a publisher of college textbooks, received a $70,000 promissory note at 12% ordinary interest for 60 days from one of its customers, Reader’s Choice Bookstores. After 20 days, Varsity Press discounted the note at the Grove Isle Bank at a discount rate of 14...
June 22, 2013

math
Euromart Tile Company borrowed $40,000 on April 6 for 66 days. The rate was 14% using the ordinary interest rate method. On day 25 of the loan, Euromart made a partial payment of $15,000, and on day 45 of the loan, Euromart made a second partial payment of $10,000. What was ...
June 22, 2013

English12
I have a thesis started, I kind of decided on my topic, how Lewis has influenced such writers like JK Rowling, Tolkien and helped them write the novels they are so famous for here is the thesis statement so far "Modern interpretive Literature has led the way for some of ...
May 30, 2013

English12
I have read the narnia books, I have another book called "A Life" by Michael White its a biography, the essay is as I said before 1500 word minimum, I am looking at arguing how he was influential and is influential still today in his writings, I am having issues ...
May 30, 2013

English12
Need help on a Research paper, my author is CS Lewis, I am having a major writers block on what to write about, teacher has left it fairly open, need to have an outline and cited works today but he is pretty slack I could have it in tomorrow and be fine, either way stuck on ...
May 30, 2013

Corporate Finance
Your firm is looking at 3 projects, each costing $500,000: A is estimated to save $125,000 per year for 5 years; B is estimated to save $75,000 for 6 years plus generate tax savings of $20,000 per year; C is estimated to save $75,000 per year for 10 years but requires ...
April 28, 2013

Chemistry
3. Using Bohr’s model of the atom, calculate the energy required to move an electron from a ground state of n = 2 to an excited state of n = 3. Express your answer in both J/photon and kJ/mol.
April 23, 2013

science
if u travel 1.5 and the box way 93 she traveled 62 watts I think
April 10, 2013

Geometry
When you use the distance formula, you are building a _____ triangle whose hypotenuse goes between two given points. A.right B.equilateral C.acute D.None of these
March 26, 2013

Life orientation
*Describe ;)
March 26, 2013

Life orientation
*hazards *crisis *globally ;)
March 26, 2013

Biochemistry
In plants, it can be assumed that NADPH like NADH is energetically equivalent to 2.5 ATP. Calculate the number of ATP and ATP equivalents that are needed to synthesize one molecule 0f glucose-6-phosphate from CO2 and photosynthetically produced ATP and NADPH.
March 25, 2013

math
y3K, Inc., has sales of $5,276, total assets of $3,105, and a debt–equity ratio of 1.40. If its return on equity is 15 percent, what is its net income? Can someone help with a formula?
March 18, 2013

Calculus
a ladder 6m long is leaning against a wall. if the top of th ladder is slipping down at th rate of 13 m/s, how fast is the bottom moving away from the wall when it is 5m from the wall? (answer in m/s) Please Help Before 230 pm central time
March 8, 2013

math
A planned community has 300 homes, each with an automatic garage door opener. The door opener has eight switches that a homeowner can set to 0 or 1. For example, a door opener code might be 01100101. Assuming all the homes in the community are sold, what is the probability ...
March 3, 2013

math
A bag contains 44 U.S. quarters and six Canadian quarters. (The coins are identical in size.) If seven quarters are randomly picked from the bag, what is the probability of getting at least one Canadian quarter? (Round your answer to one decimal place.)
March 3, 2013

math
If a person draws two cards from a standard deck (without replacing them), what is the probability that at least one of the cards is a face card? (Round your answer to one decimal place.)
March 3, 2013

calculus
Find the value for W when the limit as x approaches 8 of ((2x^2)-7x + W)/(x-8) = 25
February 26, 2013

calculus
evaluate the following limit... ((1-x)/((1/e)-(e^-x))) as x approaches one
February 26, 2013

calculus
what is the limit of (9x/(9x+5))^(6x) as x approaches infinity?
February 26, 2013

physics
the total potential difference from point A to point B in a circuit is +5 V. The total potential difference from point A to point C in a circuit is -16 V. What must be hte potential difference from point B to point C?
February 20, 2013

7th grade math please help Ms. Sue ASAP
you know Delilah our math teacher looks at this if you are going to connexs
February 13, 2013

chemistry
Molarity = moles of solute/ Liter. 5g O2 * (1 mol O2/ 32 g O2)= x moles O2 convert 250 mL to Liters X moles O2/ Liters = molarity
December 12, 2012

chemistry
When using the van't Hoff factor, I multiply the number of moles of CaCl2 by the factor right? So when finding the mole fraction of CaCl2 in the solution, it would be 3(1.22 mol CaCl2)/[3(1.22) + 12.2] which equals about .231. So then it would be dP = .231 * 239 = 55.2 mm ...
December 12, 2012

chemistry
Okay so I used the equation dP= Xsolute * Psol. I got 32.3 and it was correct. I used the exact same equation for this one, and I got 21.7. For some reason it was incorrect. What am I doing wrong? The vapor pressure of pure water at 70°C is 239 mm Hg. What is the vapor ...
December 12, 2012

chemistry
What's the difference between Psol and Pvap depression? How would I find the Pvap depression?
December 12, 2012

chemistry
The vapor pressure of pure water at 70°C is 231 mm Hg. What is the vapor pressure depression of a solution of 115 g of the antifreeze ethylene glycol, C2H6O2, a nonvolatile compound, in 205 g of water? Use molar masses with at least as many significant figures as the data ...
December 12, 2012

English
i have the words in front of me with the meaning.... so I am lost thats all I can say...
December 6, 2012

English
1. poignant 2. contend 4. conversely 7. prevalent 8. contemporary 9. charisma
December 6, 2012

English
those r my answers
December 6, 2012

English
Many people are surprised to learn how __1__ poverty is __2__ America. Today millions live below the poverty line, and the number seems to escalate daily. Judy and Martin Reed exemplify the old saying, “Opposites attract.” A __3__. Judy chooses work that brings her ...
December 6, 2012

english
then 5 has to be wrong
December 3, 2012

english
4. benefactor 7. speculate 9. alleviate
December 3, 2012

english
Shortly before the Russian Revolution, an eccentric man named Rasputin became ___1___as the "mad monk." Because he dressed like a peasant, drank heavily, and rarely bathed, the nobility often felt __2__during their encounters” with him at the palace. Yet despite...
December 3, 2012

english
Shortly before the Russian Revolution, an eccentric man named Rasputin became ______as the "mad monk." Because he dressed like a peasant, drank heavily, and rarely bathed, the nobility often felt ____during their encounters” with him at the palace. Yet despite ...
December 3, 2012

English
thank you it wouldnt surprise me if u didnt get more from these words..... from other class mates.... once again ty
December 3, 2012

math
solve the logarithmic equation. log(5x+7)=1+log(x-9)
December 2, 2012

math
find the inverse. f(x)=-2+log_4(x-4)
December 2, 2012

math
how do you write that in interval notation?
December 2, 2012

math
solve the following inequality. (x-3)^2/(x^2-4)is greater than or equal to 0.
December 2, 2012

math
find the real solutions using quadratic formula. im sorry.
December 2, 2012

math
8-(1/x)-(6/x^2)
December 2, 2012

math
find the real solutions using the quadratic formula 6-(1/x)-(4/x^2)=0
December 2, 2012

math
find the inverse of f(x)=-5+log(base5)(y-5)
December 2, 2012

algebra
Find the accumulated value of a CD of $20000 for 3 years at an interest of 3.1% if the money is compounded continously.
November 30, 2012

algebra
So, 5.9 to be exact?
November 30, 2012

algebra
How long will it take $1400 to double at 12% annual interest compounded quarterly?
November 30, 2012

Physics HELP!
A simple pendulum consists of a small object of mass 7.40 kg hanging at the end of a 2.10 m long light string that is connected to a pivot point. (a) Calculate the magnitude of the torque (due to the force of gravity) about this pivot point when the string makes a 3.00° ...
November 7, 2012

Chemistry
Find the theoretical pH of .01M and .05M benzoic acid buffer when 2ml of .1MNaOH was added to each buffer.
November 1, 2012

Physics
A ball acquires a horizontal speed of 12m/sec when a force is applied for a distance of .50m. If the ball has a mass of 1.0kg what is the force applied? ANSWER: 144N....I'm not sure what formulas I'd apply. It takes a force of 109N to life a stone straight up. This ...
October 12, 2012

Chemistry
How many times more energy is associ- ated with a 282 nm ultraviolet photon than a 5494 nm microwave photon?
October 10, 2012

Statistics: Regression
The June 1997 issue of Management Accounting gave the following rule for predicting your current salary if you are a managerial accountant. Take $31,865. Next, add $20,811 if you are top management, add $3604 if you are senior management, or subtract $11,419 if you are entry ...
October 10, 2012

math
A population is increasing according to the exponential function defined by y = 2e0.02x, where y is in millions and x is the number of years. How large will the population be in 3 years?
August 1, 2012

  1. Pages:
  2. 1
  3. 2
  4. 3
  5. Next>>