Sunday
April 20, 2014

Posts by Rachel


Total # Posts: 1,164

Physics
A rope attached to an engine pulls a 240 Newton crate up an 14.7 degree ramp at a constant speed. The coefficient of kinetic friction for the surfaces of the crate and ramp is .32. What is the magnitude of the force that the rope exerts on the crate parallel to the ramp? (grav...

math
problem> mystery numbers: Bob is thinking of 2 numbers their sum is 26. their product is 165. what numbers is bob thinking about?

Geology
What is the defining characteristic of the troposphere? (Straight forward answers please & thank you)

Geology
A thunderstorm tends to be more severe and have a longer duration if the axis of the storm is: tilted, perpendicular to the ground, or it makes no difference. (Straight forward answers, if possible use the answer choices provided please & thank you)

Geology
How is a mid-latitude cyclone formed: thunderstorms on the west side of an occluded front, frontal systems in association with the Jet Stream, a lot of hot air, or cyclonic circulation around a sub-tropical high? (Straight forward answers, if possible use the answer choices pr...

Geology
which 2 would create a low pressure at the surface? warm temp., cold temp., air moving through a terrain constriction, or air moving out of a terrain constriction. What is the main reason hail is not associated with tropical thunderstorms: lack of sufficient moisture in the tr...

Geology
How is a mid-latitude cyclone formed

Geology
When will a thunderstorm tend to be more severe and have a longer duration in reference to the axis of a storm.

Geology
Winds blow whenever there are: cold temperatures, pressure inequalities in the atmosphere, or the earth rotates on its axis

Geology
When a hurricane approches a costal area the damage from the storm surge is greater if it occurs: low tide, high tide, tide makes no difference? The dew point of a prcel of air refers to: its elevation above the surface, the temp. at which condesation will occur, the pressure ...

Geology
why do fall winds always warm as they descend the lee side of a mountain

redwine
what measures does patrick henry say the colonists have already tried in their dealings with england?

Science
I have 2 questions. 1.) Is there a powder that just contains insoluble fiber. I know that Benifiber and many other products contain soluble fiber or both soluble and insoluble fiber. But for the experament I have put together i need an insoluble fiber powder ONLY! I have not f...

Math
Find dy/dx by implicit differentiation. cot(y) = 4x − 6y

calculus
Let P= (V^2)R / (R+r)^2 Calculate dP/dr, assuming that r is variable and R is constant.

Chemistry
Which of the following statements are false regarding using a solid drying agent? (select all that apply) a) Water can be present due to isolation and/or purification conditions b) A good drying agent must be soluble in organic solvent c) One type of drying agent is sodium sul...

Chemistry
Which of the following statements are true regarding suction filtration? (select all that apply) a) Product should always be rinsed with cold water b) The filter flask can be held in place with your hand c) When filtering is complete you should remove the suction hose and then...

physics
A certain car is capable of accelerating at a uniform rate of .94m/s^2. What is the magnitude of the car's displacement as it accelerates uniformly from a speed of 87km/h to one of 97km/h? Answer in units of m.

physics
need help with the following question. if earth has a mass of 6.0*10^24 kg and a radius 6.4*10^6 m: a) find the change in gravitational potential energy of a meteorite of mass 150 kg as it moves from an infinite distance to the earth's surface. b) with what speed does the ...

math
so what is the opposite of a professional eater

math
so what is the opposite of a professional eater

chemistryyy
Answer the following two questions about the equivalence point for the titration of 27.8 mL of 0.235 M hypobromous acid (pKa = 8.64) with 0.214 M KOH. 1)Predict if the solution will be acidic, basic or neutral at the equivalence point. 2)Calculate the pH of the solution at the...

chemistryyy
Answer the following two questions about the equivalence point for the titration of 27.8 mL of 0.235 M hypobromous acid (pKa = 8.64) with 0.214 M KOH. 1)Predict if the solution will be acidic, basic or neutral at the equivalence point. 2)Calculate the pH of the solution at the...

CHEMISTRY
A buffer that is 0.271 M in acid, HA, and 0.150 M in the potassium salt of its conjugate base, KA, has a pH of 2.85. What is the pH of the buffer after 130. mL of 0.155 M LiOH is added to 0.650 L of this buffer? Assume that the volumes are additive.

CHEMISTRY
A buffer that is 0.271 M in acid, HA, and 0.150 M in the potassium salt of its conjugate base, KA, has a pH of 2.85. What is the pH of the buffer after 130. mL of 0.155 M LiOH is added to 0.650 L of this buffer? Assume that the volumes are additive.

Math: Different Forms of Linear Functions
y< x/2 -6 How do I make this into a table and then into ordered pairs?

Math: Different Forms of Linear Functions
The output is 6 less than one-half of the input

chemistry
What is Delta H rxn for the following chemical reaction? H2O(l) + CCl4(l)-> COCl2(g) + 2HCl(g)

math
cos(2x)

math
solve for sinx=cos2x (between 0 and 2pi)

calculus
find cosx and sinx if tanx = 4

Math
You'ree Welcomee 2nd Graderss![:

Math
7th* Hahaha The answer is onee![:

Math
Highest number minus the lowest. Which would be 5-4 You're Welcome!(; Btw I'm like a 7h graderr.:P

calculus
The side of a square is measured to be 12 inches with a possible error of ±0.02 inch in that measurement. If x is the exact length of the side of the square, express this difference as an absolute value inequality and solve. Then find the interval expressing the range o...

Bio
What is it called when b=d and r=0? A. iteroarity B. semelparity C. zero population growth D. cohort E. a survivorship curve I think it is E but I would greatly appreciate a teacher's input!

Chemistry
an atom is to an element as a compound is to a?

physical science
305

English
Thank you! It's really nice that you do this whole homework help for free. A lot of websites charge for stuff like that! I appreciate it immensely:) I'll be keeping this website in mind when I have Algebra 3-4 to keep up with:P

English
What tools are in a "writing toolbox"?

Medical Terminology
Need help identifying 15 medical terms that would be unfamiliar to non-medical persons. Also providing singular and plural forms of selected medical terms. This is a 47-year-old male who was in his usual state of health until early this evening when he developed an acute episo...

Trigenometry
VERY URGENT! PLEASE HELP SOLVE! tan(x)+1=sqrt(3)+sqrt(3)cot(x)as well as sin(2x)= 2 cos^(x) 4cos2(x) = 8sin(x)cos(X)

algebra
4000

intermediate icd 9 cm coding
What are the codes for Intrauterine pregnancy, spontaneous delivery, single live born?

Med terms
dysphnea=dyspnea.....oops

Med terms
afonia=pneumonia eupnia=apnea dysphnea=dyspnes DOT=DOB ventolator=ventilator

Med terms
I am having troubles finding all 10 mistakes and need some help. Inpatient Progress Report Attending Physician: Moreover, Cindy Patient: Stephen R. Peters DOT: 03/01/19XX CHIEF COMPLAINT: This 53-year-old man visited the outpatient clinic for dyspnea and recurrent coughing. HI...

physics
Physics: maximum force that can be applied to move an object? What is the maximum force F which can be exerted? Given: The friction between the block with mass 14 kg and the wedge with mass 16 kg is 0.19 . The surface between the wedge with mass 16 kg and the horizontal plane ...

Life science
True or false, the healthiest position to sleep on for the baby while you're pregnant is on your back

Life science
How many teeth does a child have and how many teeth do adults have?

Math puzzle
2•2=4, 7•3=21, 4•3=12, 3•2=6 ... 4+21=25, 25+12= 37, 37+3= 40, 40+4=44, 44+6= 50... I'm no math genius but I hope that I helped, the answer is 50.

propability
there are 40 tags numbered 1 through 40 in a bag. what is the probability that Glenn will randomly pick a multiple of 5 and than a multiple of 9 without replacing the first one?

Physics (Fill in the Blanks)
1. The last stage of a giant star is ____ 2. The path of a satellite is called ____ 3. The size of the Sun is the result of the "tug of war" between two opposing processes, nuclear fusion and ____ contraction Thanks :)

Physics
Two students are on a balcony 20.5 m above the street. One student throws a ball (ball 1) vertically downward at 11.1 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the balcony on the way down...

Chem
Calculate the standard cell voltage, Eo, for the following reactions. Include the sign of the voltage in your answers. (a) Fe2+(aq) + Pb(s) --> Pb2+(aq) + Fe(s)

Chemistry
2 Ag+(aq) + Fe(s) --> 2 Ag(s) + Fe2+(aq) Which electrode is the anode, and which is the cathode. and In which directions do the cations and anions migrate through the solution? cations thanks

business law
Mary and Celia open a boutique, they hire independent contractors. When they are not selling Mary and Celia want the I.C's to do inventory and clean up the boutique. Mary and Celia also set the working hourse.. does these factors affect theri status as independent contract...

chemistry
In the reaction 2SO2 (g) + O2 (g) 2SO3 (g), which change would cause the greatest increase in the concentration of SO3?

Brief Calculus
its supposed to be 1/v^7

Brief Calculus
Evaluate the integral. HINT [See Example 2 and 4.] (Remember to use ln |u| where appropriate.) (1/v7 + 5/v) dv

Calc
Find f(x) if f(1) = −1 and the tangent line at (x, f(x)) has slope7ex + 6. F(x)=

Calculus
no it is just as the denominator is one with the variable 4x^5 and 2x^7 not 1/25 raised to the 6th or 1/2 raised to the 7th

Calculus
Use fundamental theorem of calculus: Int(pi/2_pi) of e^(sin(q))*cos(q)dq

Chemistry
In the following reaction, how many grams of ammonia (NH3) will produce 300 grams of N2? 4NH3 + 6NO d 5N2 + 6H2O

Algebra
Explain the difference in answers between the following exponential expressions. Include the solutions? 7^2, -7^2,(-7)^2, and 7^-2

English (Grade 5)
Well I've got 8,2,9,3,1,6,10,4,7,5. Do you think this is correct?

English (Grade 5)
This is not in order. Please put the story about "The wishing well in order" 1. Today is a particularly busy day at the well. 2. This wishing well is very popular 3.It is New Years Day 4.Other People make wishes about their families. 5. For this reason the park will ...

Religion and Spirituality
What do you think is the moral of the story Tao of Forgiveness? Thank you :)

Math
determine one value of c that allows the trinomial cy^2 + 36y - 18 to be factored over the integers

Math
oh and the other rectangle is 1 by 5 ft

Math
1 by 8 is the dimensions I drew them both and divided the perimeters and then substitued starting from 1 and it worked the first time, but yeah the answer is 8

Geometry
how to you solve: the radius of circle Z is 13.5 units long. Find the length of each arc for the given angle measure. if the angle measure is 120 degrees?

Calculus
Hey, we covered limits at the beginning of the year, but I cannot remember how to do them at all. >>>what is the limit, as x approaches 2, of ((1/x )-(1/2))/(x-2)? Please go step by step!

math
a cross section of a hollow circular pipe shows that its inner diameter is 2 1/10inches and that the pipe is 3/5inch thick. what is the outside diameter

economics
Jerry will receive the following payments: 946 in year 3, 929 in year 5 and 958 in year 9. What is the purchasing power of the present value of these payments if the market interest rate is 17% per year and the inflation rate is 6% per year?

economics
Tom plans to gamble each year for the next 20 years, starting at at the end of year 1. If he loses 4.47 dollars in odd years (i.e., years 1, 3, 5, etc) and wins 7.46 dollars in even years (i.e., years 2,4, 6 etc), what will be Tom's (internal) rate of return per year from ...

economics
Consider a project with a positive rate of return. Suppose the discount factor solutions to the equation which determines the internal rate of return (ROR) of the project are given by 0.8502, 2.0207, -0.1767. What is the project's ROR?

Chem (repost)
Hydrogen and carbon dioxide react at a high temperature to give water and carbon monoxide. H2(g) + CO2(g) --> H2O(g) + CO(g) (b) Suppose 0.052 mol each of H2 and CO2 are placed in a 1.5 L container. When equilibrium is achieved at 986°C, what amounts of CO(g) and H2O(g)...

Chemistry(check my work)?
An equilibrium mixture of the following reaction was found to have [COF2] = 0.255 M and [CF4] = 0.118 M at 1000°C. What is the concentration of CO2? 2 COF2(g) ---> CO2(g) + CF4(g) Keq = 2.00 at 1000°C I know I need to put the numbers in the equation so this is what ...

How many sig figs?
Thanks:)

How many sig figs?
An equilibrium mixture of the following reaction was found to have [H2] = 0.020 M and [I2] = 0.020 M at 340°C. What is the concentration of HI? H2(g) + I2(g)--> 2 HI(g) Keq = 69 at 340°C I got .166 but it said check number of sig figs so im guessing its 2 sig figs b...

chem
Sorry I am soo confussed right now O.O. is there anyway u can explain this in simplier form?

chem
ok so I did (x)(x)/(.03466)(.03466)= 1.6. I solved for x and got .0438. Do I have to do anything with this number to get the correct answer? Can you check my work? Thanks:)

chem
thanks Would you get the same answer for both parts of b?

chem
Hydrogen and carbon dioxide react at a high temperature to give water and carbon monoxide. H2(g) + CO2(g) --> H2O(g) + CO(g) (a) Laboratory measurements at 986°C show that there are 0.11 mol each of CO and H2O vapor and 0.087 mol each of H2 and CO2 at equilibrium in a 1...

Chemistry
Nevermind I got it:)

Chemistry
An equilibrium mixture of SO2, O2, and SO3 at 1000 K contains the gases at the following concentrations: [SO2] = 3.77 10-3 mol/L, [O2] = 4.30 10-3 mol/L, and [SO3] = 4.13 10-3 mol/L. Calculate the equilibrium constant, K, for the following reaction. 2 SO2(g) + O2(g) ---> 2 ...

Math
the loan arranger

science
I am really confused on this too. I'm pretty sure you come from Connections Academy. What I did was gon on google and search saturated and unsaturated. It should help a bit?

Chemistry (repost)
Which of the following pairs of substances, when mixed in any proportion you wish, can be used to prepare a buffer solution? 1)NaCN and NaOH 2) HCl and NaOH 3) HCN and NaOH 4)HCl and NaCN 5) NaCN and HCN is the answer 1 and 5?? chem - DrBob222, Sunday, April 10, 2011 at 1:28am...

chem
I tried those and it was wrong

chem
Which of the following pairs of substances, when mixed in any proportion you wish, can be used to prepare a buffer solution? 1)NaCN and NaOH 2) HCl and NaOH 3) HCN and NaOH 4)HCl and NaCN 5) NaCN and HCN is the answer 1 and 5??

physics
Two very long, straight, parallel wires carry currents that are directed perpendicular. Wire 1 carries a current I1 into the page (in the -z direction) and passes through the x axis at x = +a. Wire 2 passes through the x axis at x = -2a and carries an unknown current I2. The t...

physics
A Hall-effect probe operates with a 120 -mA current. When the probe is placed in a uniform magnetic field of magnitude 0.0840 T, it produces a Hall voltage of 0.660 µV. The thickness of the probe in the direction of B is 2.00 mm. Find the density of the charge carriers, ...

physics
oh alright sir thank you!

physics
An accelerating voltage of 2.46 * 10^3 V is applied to an electron gun, producing a beam of electrons originally traveling horizontally north in vacuum toward the center of a viewing screen 34.0 cm away. What is the magnitude of the deflection on the screen caused by the verti...

Physics
Thank you for your help. I am still unsure on the formulas I am meant to be using and when I am meant to be converting from mmHg to Pa.

Physics
I have been given this question and with very little knowledge of physics and a book and flex studies that I am not finding very explanitory. I am not sure I am on the correct path as the vlaues I have seem very large. I would appreciate any help/assistance anyone could give. ...

physics
A Hall-effect probe operates with a 120 -mA current. When the probe is placed in a uniform magnetic field of magnitude 0.0840 T, it produces a Hall voltage of 0.660 µV. The thickness of the probe in the direction of B is 2.00 mm. Find the density of the charge carriers, ...

physics
An accelerating voltage of 2.46 * 10^3 V is applied to an electron gun, producing a beam of electrons originally traveling horizontally north in vacuum toward the center of a viewing screen 34.0 cm away. What is the magnitude of the deflection on the screen caused by the Earth...

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | Next>>

Search
Members