Questions Asked on
March 26, 2010

gen 105
what are some ways in which you may make use of web based information and guard against plagiarism.
asked by lucy 
trig
verify the identity: tan^2x(1+cot^2x)=1/1sin^2x Verify the Id: tanx + cotx/ tanxcotx = (1/sin^2xcos^2x)
asked by stacey graham 
PreCal(Please help)
Give the domain of the function and identify any vertical or horizontal asymptotes. h(x) = 1 / x  3 + 1 I had x = 0 and y = 3. Would the domain be all numbers except 1?
asked by Hannah 
trig
verify the identity: sec(beta)+ tan (beta)= cos(beta)/ 1sin(beta)
asked by stacey graham 
trig
verify the identity: sin(x+y)sin(xy)=2cosx siny
asked by stacey graham 
trig
find the angle (theta) using cofunction identites sin(3theta17degrees)=cos(theta+43degrees)
asked by stacey graham 
trig
find the exact value given that cosA=(1/3) in quad I, sin B=(1/2) in quad 4, and sin C=(1/4) in quad 2 sin(AB)?
asked by stacey graham 
trig
tan(theta)=(7/24), sin(theta)
asked by stacey graham 
chemistry
how many grams of oxygen are formed when 500gof dinitrogen monoxide decomposes?
asked by aminat 
physics help
A 1100 kg automobile is at rest at a traffic signal. At the instant the light turns green, the automobile starts to move with a constant acceleration of 3.0 m/s2. At the same instant a 2800 kg truck, traveling at a constant speed of 8.0 m/s, overtakes and
asked by beav 
hsm 270
Identify where the program planning and evaluation process can provide opportunities for program improvement. Explain the how program evaluation can improve a program. Consider both the manager and funder perspectives as you look for program improvement
asked by ttnl 
math
sigma 1 to infinity 2/k(ln(3k))^2 coverges or diverges
asked by Anonymous 
Math
For the graph of (3x)/(5x+2)^3: is the following information right? xintercept: (3,0) yintercept: (0,0.375) vertical asymptote: x= 0.4 horizontal asymptote: y=0 increasing: (4.7, infinity) decreasing: (infinity, 0.4) (0.4, 4.7) concave up: (0.4,
asked by Tim 
physics help!!!
In February 1955, a paratrooper fell 365 m from an airplane without being able to open his chute but happened to land in snow, suffering only minor injuries. Assume that his speed at impact was 60 m/s (terminal speed), that his mass (including gear) was 90
asked by dave 
math
Two automobile dealers, A and B, had the same car which was listed at $18,000. Dealer A offered a $1200 rebate and would negotiate a further 8% discount after rebate. Dealer B offered an 8% discount and would negotiate a further $1200 rebate. (a) Which
asked by Kirk 
math
Sheryl correctly answered 85% of the questions on her 200question biology final. Fernando scored a 90% on his 180question chemistry final. (a) Who answered more questions correctly? ____________________ (b) Who answered more questions incorrectly?
asked by Kirk 
Chemistry
A 20.0mL sample of 0.20M sodium acetate is titrated with 0.11M HCl(aq). What is the pH after the addition of 50.0mL HCl(aq)? (Kb of CH3CO2 = 5.6x10^10)
asked by Sean 
CHEMISTRY
WHAT FACTORS ARE CONSIDERED TO BE STRESSES ON AN EQUILIBRIUM SYSTEM
asked by ANDREW 
Chemistry
Mercury vapour is used in as the dominant species which is excited in a traditional fluorescent light. The first and second excited states of Mercury occur at 254 and 185 nm. (a) Calculate the energies of each of these transitions.
asked by Mary 
Chemistry
Mercury vapour is used in as the dominant species which is excited in a traditional fluorescent light. The first and second excited states of Mercury occur at 254 and 185 nm. 1. In what region of the electromagnetic spectrum do these transitions occur? 2.
asked by Mary 
chemistry
Hi Can sombody please help me with this problem If a soil sample contains 0.5g of iron (Fe3+) per 100g. The iron is precipitated when soil becomes alkaline as shown by equation Fe3+ + 3OH + (x1)H2O ? FeOOH.xH2O(s) The soil is sprayed with 50 wt% urea
asked by Mary 
Physics
An odometer in a car has a reading of 50 km at the beginning of a trip and a reading of 125 km half an hour later. What is the average speed of the car? Textbook ans: 150km/h Please can someone help me solve this problem? I don't know how to solve it. Can
asked by John 
government
In a Federal System of Government, where does the power and authority come from?
asked by Salome 
6th grade
Assume that the average speed of a moving object at 1 m was initial velocity and average spped of your cvart 5 m was its final velocity. calculate the change in velocity of your cart from 1 m to 5m. Show your work
asked by Brittany 
Carribean
I have to think of 4 kinds of cultural experiences that tourists might have in the Carribean, then I have to describe the direct and indirect benefits from each experience. I've already thought of one, and it's the Carnival Parade in Trinidad.
asked by AL 87 
vocab
I waana English vocablry ( story or Essay )
asked by Majd 
4th grade English
Please check the following, thanks. First Syllable Accented Cancel Chamber Gather Tender Damage action Second Syllable Accented Frosty Mustang Convince Belief Behave Certain Remind Confuse Contain
asked by Claire 
Geology
Can someone give me a good resource from the usgs.gov site on the Flordia Everglades? I need information about the rocks and volcanic activity within the Everglades. I have the answers to the questions, but I do not understand the site and how to find
asked by Sarah 
trig
verify the identity (tanx+cotx) (1) __________ = ______________ (tanxcotx) (sin^2xcos^2x)
asked by stacey graham 
trig
(1) tan^2x(1+cot^2x)= _____________ (1sin^2x)
asked by stacey graham 
trig
find the exact value given that cosA=(1/3) in quad I, sin B=(1/2) in quad 4, and sin C=(1/4) in quad 2 tan(B+C)
asked by stacey graham 
trig
{tan^2x+cotx divided by tanxcotx} is equal to {1 divided by sin^2xcos^2x}
asked by stacey graham 
trig
{tan^2x(1+cot^2x)} is equal to{1 divided by 1sin^2x}
asked by stacey graham 
trig
given that cos(theta)= (3/5) and sin (theta)
asked by stacey graham 
trig
Evaluate cos (2 arcsin (1/4))
asked by stacey graham 
trig
solve the equation 3 sin^2(theta) sin(theta)4=0
asked by stacey graham 
Science
If the sun is in the center of the constellation Sagittarius on January 10, what time would the sun rise and what time would it set? Need an answer!!!!!
asked by Jenny 
Science
If the sun is in the center of the constellation Sagittarius on January 10, what time would the sun rise and what time would it set? Need an answer!!!!!
asked by Jenny 
english
if i have to write a passage using rhetorical devices on a person or an ideology.. what would be the best thing for me to write on and how can i got about it.
asked by pat 
physics: escape velocity
You are on Pluto and would like to send a probe into space so that it does not fall back to the surface. What minimum launch speed do you need? (The mass of Pluto is 1.3x^22 kg and the radius of Pluto is 1.18x10^6 m). Answer in km/s. I have used the
asked by Laramie 
math
I need help finding the center and latus rectum of the equation: 3y^2  2y + x + 1 = 0
asked by dcw 
Math!
A credit Union pays 8.25% comppunded annually on 5year compoundinterest GICs. It wants to set the rates on its semiannulaly and monthly compounded GICs of the same maturity so that investors will earnt eh same total interest. What should be the rates on
asked by Thara! 
us history
during the american revolution, the _______ remained loyal to england.
asked by sarah 
Compound Interest!
Mr. and Mrs.Eng's property taxes,accounting to $2450, are due on July 1. What amount should the City accept if the taxes are paid 8 months in advance and the City can earn 6% compounded monthly on surplus funds?
asked by Thara! 
Compound Interest!
Florence can pay her golf membership dues with a single payment of $1500 at the beginning of the year or by paying $770 at the beginning of the year and $810 six months later. What option is to her advantage if she can earn 7% compounded queaterly on
asked by Thara! 
Compound Interest!
Two payments of $10,000 and $12,000 must be made 1 year and 4 years from now. If money can earn 9% compounded monthly, what single payment 2 years from now would be equivalent to the two scheduled payments?
asked by Thara! 
math
How do i find the transformed equation of the hyperbola xy = 4 when rotated 45 degrees? I don't understand at all. my choices are: A  (x')²(y')² = 4 B  (x')²  (y')² = 4 C  (x')²  (y')² = 8
asked by dcw 
Pre calculus
4x^225y^28x100y196=0 how do i find the conic section to find the center?
asked by bbb 
math
What is the major axis and the domain of the equation 9x^2 + 16y^2  36x + 96y + 36 = 0 ?
asked by dcw 
math
Finding the domain of G(X)=4/43X So would the domain be 3 then?
asked by KiKi 
physics help
particle 1 of mass m1 = 0.29 kg slides rightward along an x axis on a frictionless floor with a speed of 1.8 m/s. When it reaches x = 0, it undergoes a onedimensional elastic collision with stationary particle 2 of mass m2 = 0.40 kg. When particle 2 then
asked by mike 
physics
A flywheel with an axle 1.0cm in diameter is mounted in frictionless bearings and set in motion by applying a steady tension of 2N to a thin thread wound tightly round the axle. The moment of inertia of the system about its axis of rotation is 5.0 x 10^4
asked by Edwin 
pre calculus
x^2+y ^2+ 4x + 6y  12 = 0 how do i find the domain?
asked by mmm 
bio
if antibiotics seem effective against a human illness, then this illness is probably caused by
asked by Anonymous 
math/hurry
Round each of the following numbers as specified. (a) 508.576 to the nearest hundredth ________________ (b) 508.576 to the nearest tenth ________________ (c) 508.576 to the nearest hundred
asked by Kirk 
pre calculus
9x^2 + 16y^2  36x + 96y + 36 = 0 how do i find the domain to this problem?
asked by ppp 
pre calculus
9x^2 + 16y^2  36x + 96y + 36 = 0 How do i find the major axis?
asked by mike 
math
Wheel’s Bicycle shop advertised a bicycle for 15% off for a savings of $36. The bicycle did not sell so it was offered at a new 20% discount off the sale price. (a) What did the bicycle sell for regularly? ______________ (b) What is the amount of the new
asked by Kirk 
physics
The static pressure in a horizontal pipeline is 4.3 x 10^4 Pa, the total pressure is 4.7 x 10^4 Pa, and the area of crosssection is 20cm^2. The fluid may be considered to be incompressible and nonviscous and has a density of 10^3 kg/m^3. Calculate (i)
asked by Edwin 
algebra
(a+b)(a2b)
asked by justin 
Additional mathematics
Given that y=2x62+px+16 and that y
asked by Sean 
physics
A plane progressive wave is represented by the equation: y= 0.1sin(200pi(t)20pi(x/17) where y is the displacement in millimetres, t is in seconds and x is the distance from a fixed origin O in metres. Find (i) the frequency of the wave, (ii) its
asked by Edwin 
Chemistry
A 2.00g sample of a gas SX6 has a volume of 329.5 cm3 at 1.00 atm and 20 celcius. What element is X?
asked by Meg 
Physics
An Atwood machine is constructed using a disk of mass 2 kg and radius 20.1 cm. 2.3 m= distance between weights 1.53 kg= weight 1 1.18 kg=weight 2 What is the acceleration of the system? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s2.
asked by Caryn 
Physics
A 16 kg mass is attached to a cord that is wrapped around a wheel with a radius of 10.9cm. The acceleration of the mass down the frictionless incline is measured to be 1.4 m/s2.The angle of incline is 36 degrees. Assume the axle of the wheel to be
asked by Caryn 
algebra
what are extraneous solutions of an equation? Why do they sometimes occur in the process of solving rational equations? examples
asked by sid 
Physics
A 190 g basketball has a 37.3 cm diameter and may be approximated as a thin spherical shell. Starting from rest, how long will it take a basketball to roll without slipping 2.48 m down an incline that makes an angle of 46◦ with the horizontal? The moment
asked by Caryn 
Physics
A horizontal 873 N merrygoround of radius 1.11 m is started from rest by a constant horizontal force of 70.6 N applied tangentially to the merrygoround. Find the kinetic energy of the merrygoround after 3.59 s. The acceleration of gravity is 9.8 m/s2
asked by Caryn 
physic
he current in a 100 watt lightbulb is 0.840 A. The filament inside the bulb is 0.140 mm in diameter. a) What is the current density in the filament? b) What is the electron current in the filament?
asked by elena 
poetry
sojourner's vision of god is an example of an
asked by Anonymous 
physics
Two point charges 1.5 cm apart have an electric potential energy 150 mu J. The total charge is 34 nC. what are q_1 and q_2?
asked by mandy 
physics help please!!!
The tires of a car make 63 revolutions as the car reduces its speed uniformly from 94.0 km/h to 58.0 km/h. The tires have a diameter of 0.88 m. What was the angular acceleration of each tire? And If the car continues to decelerate at this rate, how much
asked by Anonymous 
com. 140
What kind of unwanted reactions might you encounter when trying to convince the business committee to except your proposal for a new service?
asked by Precious 
PreCal
Give the domain of the function and identify any vertical or horizontal asymptotes. h(x) = 1 / (x  3) + 1 I had x = 0 and y = 3. Would the domain be all numbers except 1?
asked by Hannah 
physics help
a 3.5 kg dog stands on a 21 kg flatboat at distance D = 6.1 m from the shore. It walks 2.3 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find how far the dog is then from the shore. I thought i have the
asked by mike 
physics
Suppose a 69 kg person stands at the edge of a 7.8 m diameter merrygoround turntable that is mounted on frictionless bearings and has a moment of inertia of 1600 kg*m^2. The turntable is at rest initially, but when the person begins running at a speed of
asked by Anonymous 
10th Grade Honors Chemistry
volume of 8.00 grams of hydrogen gas at 32.0 degrees celcius and 1.50 atm
asked by Theresa 
world history
How did seamstress dress during Medieval times?
asked by Danielle 
PreCal
use a graphing calculator to obtain the graph of the function. What do you observe about its asymptotes? g(x) = 4 [x2] / x + 1 My answer was there are two horizontal asymptotes but it was wrong.
asked by Hannah 
CHM 152
Consider the following equilibrium: PCl5 = PCl3+ Cl2 5.0 moles of are placed in a 10.0 L flask at 200 C and allowed to come to equilibrium. Analysis shows that 1.0 mole of is present in the equilibrium mixture. How many moles of are present at equilibrium.
asked by AMI 
CHM 152
For the system 2A (g) + B( g) = 2C (g), if the initial concentration of pure C is 1.00 M, the equilibrium concentration is 0.40 M. What is the value of Kc? Choose one answer. a. 5.0 b. 0.45 c. 0.67 d. 2.2 e. 1.5
asked by AMI 
CHM 152
Consider the following equilibrium: PCl3 + Cl2 = PCl5 Kc=26 @ 250 degree Celcius 1.0 mol of PCl3 , 1.0 mol of Cl2 , and 5.0 mol of PCl5 are placed in a 10.0L flask at 250 C and allowed to come to equilibrium. What is the concentration, in M, of at
asked by AMI 
Physics
A Jeweler working with a heated 47g gold ring must lower the ring's temperature to make it safe to handle. If the ring is initially at 99 degrees Celsius, what mass of water at 25 degrees Celsius is needed to lower the ring's temperature to 38 degrees
asked by Demi 
physics
A small source O of electromagnetic waves is placed some distance from a plane metal reflector M. A receiver R, moving between O and M along the line normal to the reflector, detects successive maximum and minimum readings on the meter joined to it. (a)
asked by Edwin 
physics
Water flows steadily along a uniform flow tube of crosssection 30cm^2. The static pressure is 1.20 x 10^5 Pa and the total pressure is 1.28 x 10^5 Pa. Calculate the flow velocity and the mass of water per second flowing past a section of the tube.
asked by Edwin 
Physics
I appreciate any help! Thank you!! How much energy must be added to a bowl of 125 popcorn kernels in order for them to reach a popping temperature of 175 degrees Celsius? Assume that their initial temperature is 21 degrees Celsius, that the specific heat
asked by Demi 
physics
A flywheel of moment of inertia 0.32 kgm^2 is rotated steadily at 120rad/s by a 50 W electric motor. (i)find the kinetic energy and angular momentum of the flywheel. (ii) calculate the value of frictional couple opposing the rotation. (iii)find the time
asked by Edwin 
Physics
I'm understanding most of this physics, but here is one last question I would appreciate help on. Thank you! Okay, so the question involves a figure. A link to the question and the picture with it is below can be found by googling the question along with
asked by Demi 
Medical Terminology
A patient visits the doctor's office with abdominal pain of two days' duration. Medical history is significant for tonsillectomy and hypertension. The patient denies alcohol and drug abuse. The rectal examination confirms hemenegative stool. Impression:
asked by Brenda 
Medical Terminology
Gastrectomy is listed as the principle procedure on the surgical report. You know that (ectomy) means excision or surgical removal. What part of the medical word does "ectomy" represent? A. Root B. Suffix C. Prefix D. Combining form
asked by Brenda 
MATH
Determine all the absolute extreme values for the function f(x, y) = sin x sin y sin(x + y) on the square 0
asked by GRAVITY 
Medical Terminology
The Histology report showed adenocarcinoma. What type of information appears in this report? A. Tissue structure B. Presence of cancer in an organ C. Condition of a particular organ D. Condition of the heart
asked by Brenda 
chemistry 121
Microwave ovens use microwave radiation to heat food. The microwaves are absorbed by moisture in the food, which is transferred to other components of the food. As the water becomes hotter, so does the food. Suppose that the microwave radiation has a
asked by andrea 
physical geography
why doea a rising parcel of unsaturated air cool more rapidly than a rising parcel of saturated air??
asked by ellie 
gr 12 chem
if some light is absorbed by an electron, what happens to the electron?
asked by amy 
Medical Terminology
You're asked to change plural medical words to the singular form. Which of the following combinations represents the correct conversion? A. Criterion, criteria B. Bacteria, bacterium C. Lumen, lumina D. Ganglion, ganglia
asked by Brenda 
History
How important is it for the people of a nation to have approved their constitution?
asked by christopher 
Medical Terminology
A 15year old female patient has experienced daily nausea for the past two months. The patient states that she feels like "I've eaten something that has upset my stomach.: She denies vomiting and weight loss. The patient has noticed a weight gain of 10 lb
asked by Brenda 
physics
If the amplitudes of the two waves are 3 units and 1 unit respectively, show by the principle of superposition that the ratio of the amplitudes of the stationary wave at an antinode and node respectively 2:1
asked by Edwin 
physics
water flows along a horizontal pipe of crosssectional area 48cm^2 which has a constriction of crosssectional area 12cm^2 at one place. If the speed of the water at the constriction is 4 m/s, calculate the speed in the wider section. The pressure in the
asked by Edwin 
physics
Show that a force acting along a given line can always be replaced by a force of the same magnitude acting along a parallel line, together with a couple.
asked by Edwin 
physical science
i need to draw an example of a combined pulley
asked by carrie smith 
Medical Terminology
The lateral ports were removed. Where would these ports be located? A. Toward the back B. Toward the head C. Farthest from the median D. Toward the front
asked by Brenda 
Medical Terminology
A 65yearold patient has a murmur over the apex of the heart. What does the term apex represent? A. Tip B. Nearest the middle C. Front D. Back
asked by Brenda 
Medical Terminology
The patient reports smoking three packs of cigarettes per month. She denies drug and alcohol use. This statement is an example of A. social history B. family history C. physical examination D. chief complaint
asked by Brenda 
Medical Terminology
The patient went into cardiac arrest. The (ac) portion of the word is a/an A. noun suffix B. plural suffix C. combining form D. adjective suffix
asked by Brenda 
Medical Terminology
A 16yearold patient is having problems with a swollen gland on the left side of her neck. The physician is most likely to use __________ to determine if the gland has any atypical characteristics. A. auscultation B. percussion C. palpation D.
asked by Brenda 
Global History
How did the location of axis powers in Europe contribute to their defeat?
asked by Gaby 
Global History
what factors besides enfing the war in the pacific might have contributed to president Harry Truman's decision to drop the atomic bomb?
asked by Gaby 
Medical Terminology
During surgery 1 cm of subcutaneous fat is revealed. What does the prefix in the word subcutaneous mean? A. Across B. Under C. Around D. Within
asked by Brenda 
physcis
a 16990kg airplane lands with a speed of 91m/s on a stationary aircraft carrier deck that is 115m. find workk done by nonconservative forces in stopping the plan.
asked by brittney 
Chem
Argon makes up 0.93% by volumee of air. Calculate its solubility (mol/L) in water at 20C and 1.0 atm. Henry's law constant for Argon under these conditions is 1.5 x 10^3 mol/L*atm.
asked by Staci 
Chem
A household bleach solution contains 5.25% (by mass) NaClO. How many moles of NaClO are needed to make 1000L of the solution? (density = 1.07g/mL)
asked by Staci 
physical science08
regarding the Adiabatic Process.... why is their a dry adiabatic rate and a saturated adiabatic rate?
asked by ellie 
Math
Find an equation of the line containing the given pair of points. (5,2) and (3,1). The equation of the line in slopeintercept form is y=. Here is what I came up wiyh: y=1/2x1/2. Is this correct? I am confused on this problem. Could someone please
asked by B.B. 
trig
an airplane leaves the airport and flies due west 150 miles and then 240 miles in the direction 200°40'. Assuming the earth is flat, how far is the plane from the airport at this time( to the nearest mile)?
asked by kat 
physics
A progressive and a stationary simple harmonic wave each have the same frequency of 250Hz and the same velocity of 30m/s. Calculate (i) the phase difference between two vibrating points on the progressive wave which are 10cm apart. (ii) the distance
asked by Edwin 
Math
Graph using the slope and the yintercept. x+5y=20. Here is what I came up with: 5y=x(0)+20 5(0)= x+20 5y/5=20/5 x=20 (20,0) y=4 (0,4) The graph does not have a 20 on it. On the y axis it goes up to 10 and down to 10. On the xaxis it goes from 10 to 10
asked by B.B. 
Chemistry
A solution is made by dissolving 0.100 mol of NaCl in 5.35 mol of water. What is the mass % of NaCl? So far, I have determined molecular weight of NaCl (58.44 g/mol) multiplied by 0.100 mol = 5.844g NaCl, and mw of H2O (18 g/mol) = 96g H20. I thought mass
asked by Jon 
PreCal
use a graphing calculator to obtain the graph of the function. What do you observe about its asymptotes? g(x) = 4 [x2] / x + 1 My answer was there are two horizontal asymptotes. My teacher said that there are two asymptotes but she wants me to find the
asked by Hannah 
physical geography
Regarding to the adiabatic Process.. Why is there a DRY ADIABATIC RATE and a SATURATED ADIABATIC RATE?
asked by ellie 
Attn: DrBob
A household bleach solution contains 5.25% (by mass) NaClO. How many moles of NaClO are needed to make 1000 L of the solution? (density = 1.07g/mL) This is the complete question on my assignment. It's 1000 L.
asked by Staci 
Math
Write an equation of the line containing the given point and perpendicular to the given line. (8,6); 3x+5y=8. The equation of the line is y= Here is what I have: 3x+5y=8 5y=3x+8 y= 3/5(x)+8/5 y=5/3(x)=b 5=5/3(5)+b 5=25/3+b 15=25+3b 40=3b b= 40/3=
asked by B.B. 
math
In Quadratics Grade Ten:How do you find the coordinates of the vertex? What is the Optimum value mean? What are the zeros of the relation? How do you know if the parbola is Maximum or Minimum?
asked by confused 
Chemistry 2
In a study designed to prepare new gasoline resistant coatings, a polymer chemist dissolves 6.053g of poly in enough water to make 100.0 mL of solution. At 25C, the osmotic pressure of this solution is 0.272 atm. What is the molar mass of the polymer
asked by Mike 
social studies
How has early memory research concerning the growth of cognitive perspectives in psychology changed over the course ofthe 20th century?
asked by sandra 
math
you currently have 12 bottles on you shelf.and you want to keep a min of 6 bottles on you shelf.you average sales is 2 per day what is the min you would order for enough bottles for 7 days
asked by kaila 
Chemistry problem
Hi I'm stuck on these questions can you please help me A soil sample contains 0.2234 g of Fe3+ per 100g. Fe3+ is precipitated when the soil becomes alkaline as shown in the equation below. Fe3+ + 3OH + (x1)H2O „_ FeOOH.xH2O(s) This soil is sprayed with
asked by Sarah 
Chemistry
Hi I just need help with question (ii) and (iii), i know how to work out (i) A solution is prepared by dissolving 0.2222 (±0.0002) g of KIO3 in 50.00 (±0.05) mL (i) Calculate the molar mass of KIO3 with its associated uncertainty to the correct number of
asked by Jenny 
psy270
People with different personalities can be given the same diagnosis why is that need help cant not find the answer i am lookig for or how to word it .
asked by trudy 
CHEM
The first excited state of the hydrogen atom is separated from the ground state by 10.2 eV. (a) At what wavelength does this occur and what is the energy difference in kJ mol1
asked by ABBY 
CHEMISTRY
Hey 1)how do you estimate the line widths (full width half maximum) of the peaks arising from: (a) The emission of a hollow cathode lamp (b) The absorption peak of caffeine in the UV –visible spectrum (c) The dd transition observed for Ni2+ in aqueous
asked by Kelly 
chemistry
A copper wire weighing 5.463g was dissolved in excess nitric acid, precipitated as copper(2)carbonate with excess sodium carbonate, and then converted tooo copper(2) sulfate pentahydrate using excess sulfuric acid. A student carrying out these reactions
asked by 496935sd 
STATS/CHEM
I get how to use the method of least squares to determine slope, intercept, uncertainties in slope and intercept of your graph and but am confused how to determine the error of mole percent stated in (ii) The following are peak areas for chromatograms of
asked by Ashley 
physics
A rocket is fired straight up through the atmosphere from the South Pole, burning out at an altitude of 208 km when traveling at 5.8 km/s. (a) What maximum distance from Earth's surface does it travel before falling back to Earth?
asked by nate 
math
the perimeter of a rectangle is 228 inches. the length exceeds the width by 76 inches. find the length and the width.
asked by Queeny 
Biology
True or False?: The random segregation of chromosomes during meiosis explains Mendel's observation that genes for different traits are inherited independently of each other.
asked by I Need Help 
algebra
25a2  30a + 9
asked by Anonymous 
math
At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 17 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per
asked by bob dylan 
physics
A mountain climber friend with a mass of 80kg ponders the idea of attaching a heliumfilled balloon to himself to effectively reduce his weight by 25% when he climbs. He wonders what the approximate size of such baloon would be.
asked by Gail 
his 135
was nixon's presidency a success? i feel it was because he had the foreign policy and draft ? anything else i can add? can be great besides the watergate scandal was he a success/
asked by bobbi 
Algebra
Retail Sales. Paint Town sold 45 paintbrushes, one kind at $8.50 each and another at $9.75 each. In all, $398.75 was taken in for the brushes. How many of each kind were sold?
asked by Rodri 
physics help
particle 1 of mass m1 = 0.29 kg slides rightward along an x axis on a frictionless floor with a speed of 1.8 m/s. When it reaches x = 0, it undergoes a onedimensional elastic collision with stationary particle 2 of mass m2 = 0.40 kg. When particle 2 then
asked by beav 
Dobson
a)The element with the greatest density is osmium, which has a density of 22.6g/cm3. Calculate the mass of 32.1 cm3 of osmium. b)A team of students determined the density of a sample of wood to be 0.52 g/cm3. A handbook of chemistry reported the density of
asked by Anonymous 
world history
why are farmers today not as tightly bound by geography and climate as they were in the past
asked by jane 
Spanish
What is the 12 calzones?
asked by Jenny 
physics
A 14.5 metal wire is cut into three equal pieces that are then connected side by side to form a new wire the length of which is equal to onethird the original length. What is the resistance of this new wire? Answer in units of .
asked by Anonymous 
physics
A 14.5 metal wire is cut into three equal pieces that are then connected side by side to form a new wire the length of which is equal to onethird the original length. What is the resistance of this new wire? Answer in units of .
asked by Anonymous 
physical science
find the net force produced by a 40 Newton force and a 50 Newton force in each of the following cases: Both forces act in the same direction. Both forces act in opposite directions.
asked by natasha 
chm152
PCl3 + Cl2 = PCl5 Kc=26 @ 250 degree Celcius 1.0 mol of PCl3 , 1.0 mol of Cl2 , and 5.0 mol of PCl5 are placed in a 10.0L flask at 250 C and allowed to come to equilibrium. What is the concentration, in M,of cl2 of at equilibrium? Choose one answer. a. 3.4
asked by ami 
Chemistry
0.12 g of rock salt(NaCl and impurities) was dissolved in water and titrated with 0.1 M silver nitrate. 19.7 mL was required to titrate all the chloride ion. How many moles of sodium chloride were in the original sample and what percent of the sample are
asked by Mary 
Chemistry
Alcohol levels in blood can be determined by a redox titration with potassium dichromate according to the balanced equation: C2H5OH(aq) + 2Cr2O7(2) (aq) + 16H+(aq)> 2CO2 (g) + 4 Cr3(+)(aq) + 11H2O (l) What is the blood alcohol level in mass perecent if
asked by Mary 
Math(Please help)
divide by long division. divide x^3 + 4x^2  3x  12 by x^2  3
asked by Abbey 
math/hurry
The ratio of boys to girls in Mr. Joiner’s class is 5 to 7. If there are 15 boys in the class, how many total students are in the class?
asked by Kirk 
math/hurry
A plumber needs four sections of pipe 2 7/8 feet long. Can this be cut from a 12 foot section? If so, how much pipe will be left over? If not, why not?
asked by Kirk 
chemistry (quatatative analysis)
How many grams of Ba(IO3)2 can be dissolved in 500 mL of a 0.100 M KIO3 solution at 25 oC? Use activities for this calculation. The solubility product constant for Ba(IO3)2 is 1.57×109 at 25 oC.
asked by Annabelle 
math
If you have a grade average at 50% and you score 89% percent on a test what does your grade equal out to?
asked by tarra 
statistics
Suppose that large dogs weights are normally distributed with a mean of 100 pounds and a standard deviation of 10 pounds. If one of these dogs is picked random: a) what is the probability that the dog will weigh over 110 pounds? b) what is the probability
asked by Anonymous 
statistics
Compare the two sets and describe what you discover. 57,61,57,57,58,57,61 61,52,69,64,46,54,47,
asked by shelly 
statistics
Find the standard deviation using the rule of thumb for each of the data sets 57,61,57,57,58,57,61 61,52,69,64,46,54,47
asked by shelly 
Physics
The smallest object visible to the unaided eye is of 100 microns. If you use a microscope of m=1000, what is the size of the smallest object you can now see? (So=25cm) The answer is apparently 100nm. I am still confused as to why. Please help!
asked by Jane 
Math  Trig
Given that a measures 25.1 mm, x measures 51.2 mm and angle b measures 82°, find the length of y 
asked by TT 
college trig
From a point on the ground a person notices that a 110ft tree on top of a hill subtends an angle of 3°. If the angle of elevation to the bottom of the tree, represented by angle A in the figure below, measures 37°, find the height h of the hill
asked by smith 
Earth Science
What is the primary basis for differentiating the Eras?
asked by Abbey 
math . . .
To measure the height of an inaccessible cliff on the opposite side of a river, a surveyor makes the measurements shown in the figure ( one angle is 33.1 & the other i 69.4) . If distance d = 202 meters and Ð b = 50.0°, find the height of the cliff. the
asked by Thank You For The Help 
physics
A beam of electromagnetic waves of a wavelength 3.0cm is directed normally at a grid of metal rods, parallel to each other and arranged vertically about 2.0cm apart. Behind the grid is a receiver to detect the waves. It is found that when the grid is in
asked by Edwin 
physics
water flows along a horizontal pipe of crosssectional area 48cm^2 which has a constriction of crosssectional area 12cm^2 at one place. If the speed of the water at the constriction is 4 m/s, calculate the speed in the wider section. The pressure in the
asked by Edwin 
physics
Show that a force acting along a given line can always be replaced by a force of the same magnitude acting along a parallel line, together with a couple.
asked by Edwin 
Earth Science
which geologic era had the shorest time span and the longest time span? 1) Longest = paleozoic 20 shortest = cenozoic Is this correct?
asked by Abbey 
Physics
A small fish is inside a spherical bowl filled with water (n=1.33). The bowl has a diameter of 30cm and the fish is at a distance of 5cm from the surface that separates water and air (ignore the effects of the glass of the bowl). The image of the fish is
asked by Sandra 
Earth Science
What is the major source of free oxygen in the atmosphere? Would it be trees?
asked by Abbey 
Financial Management in Health Care Organizations
$5,000 compounded semiannually at 6% for 5 years
asked by Virginia 
Physics
The refractive index of a material is different for different wavelengths and colours of light. For most materials in the visible range of the electromagnetic spectrum, shorter wavelengths have larger refractive index compared to longer wavelengths. The
asked by Sandra 
physics
If the relative humidity is 66.8% in the middle of a spring day in auckland when the temperature is 15 degrees celsius, What will the relative humidity be in the evening when the temperature falls to 10 degrees celius (Assume the partial pressure of water
asked by Steve 
Physical Science
Wave amplitude is related to A)wave velocity B)frequency C)energy D)wavelength
asked by Kim Love 
Ivy Tech
The source of magnetism is A)polarization B)magnetic monopoles C)electrons D)protons
asked by Kim Love