Questions Asked on
March 8, 2010

AP Chemistry
Assume that 30.0 mL of a 0.10 M solution of a weak base B that accepts one proton is titrated with a 0.10 M solution of a monoprotic strong acid HX. (a) How many moles of HX have been added at the equivalence point? (b) What is the predominant form of B at
asked by Sally Perez 
uah
Assume you are performing the calibration step of Experiment 8 and you begin with 70 g of water at 20 oC and 70 g of water at 80 oC. After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment,
asked by dee 
Physics
Pulling the string on a bow back with a force of 28.7lbs, an archer prepares to shoot an arrow. If the archer pulls in the center of the string, and the angle between the two halves is 138 degrees, what is the tension in the string?
asked by Jim 
Chemistry
when heated, sodium bicarbonate, NaHCO3, decomposes into sodium carbonate, Na2CO3, water, and carbon dioxide. If 5.00 g of NaHCO3 decomposes what is the mass of the carbon dioxide produced?
asked by stocihs hard 
HUMAN LIFE
I have to do a project about the human life cylce dose anyone know any good websites or any good information about the seven stages of life or the human life span???? PLZZ HELP ME IT IS DUE THIS WEDNESDAY CAN SOMEONE PLZZZ HELP ME PLZZZZ
asked by Rachael.gardner 
Intro Chemistry
What is the name of NH4CNO? is it ammonium something? Thank you
asked by emath 
Math
A small factory employs 7 experienced and 5 inexperienced workers. The mean monthly wage of these 12 workers is $700. Given that the mean monthly wage of 5 inexperienced workers is $602, calculate the mean wage of the 7 experienced workers.
asked by MJ 
Accounting
On January 1, 2009, Sweetwater Furniture Company leased office space under a 21year operating lease agreement. The contract calls for annual rent payments on December 31 of each year. The payments are $11,000 the first year and increase by $600 per year.
asked by Anoymous 
Chemistry
If 15.0 kJ are released when 1.40 g of F2 reacts with an excess of SiH4, complete the thermochemical equation below. SiH4(g) + 2 F2(g) SiF4(g) + 4 HF(g) ÄHrxn=?kJ
asked by Rach 
Physics
The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 1023 are released from rest, with m1 at a height of 0.91 m above the floor. When m1 hits the ground its speed is 1.5 m/s. Assume that the pulley is a uniform disk with a
asked by Jon 
Math
The mean height of 20 boys and 14 girls is 161 cm. If the mean height of the 14 girls is 151 cm, calculate the mean height of the 20 boys.
asked by MJ 
chemistry
Suppose a solution containing 3.50g of Na3PO4 is mixed with an excess of Ba(NO3)2. how many grams of Ba2(PO4)2 can be formed. 2Na3PO4 +3Ba3(NO3)2= 1Ba3(PO4)2 + 6NaNO3.(Balanced equation)
asked by Kerry 
Chemistry
Given the concentration of either hydrogen ion or hydroxide ion, use the ion product constant of water to calculate the concentration of the other ion at 298K A. [H+]= 1.0*10^4 B. [OH]=1.3*10^2 for A do you subtract 1.0*10^14? and for B do you divide
asked by Laverne 
Math
1. Write the balanced chemical equation for the reaction NaOH + HCI > NaCI + H20 2. Extract the relevant information from the qustion: NaOH v= 30mL, M=0.10 HCI v= 25.0 mL, M=? 3. Convert to Liters NaOH v= 0.03 L, M= 0.10M HCI v=0.025L, M=? 4. Calculate
asked by Maria 
algebra
You deposit $500 in an account that pays 3% annual interest. Find the balance after 2 years if the interst is compounded with the given frequency. a) annually b) quarterly c) daily
asked by Kayla 
Chemistry
Lead(II) nitrate reacts with potassium iodine to produce lead(II) iodide and Potassium nitrate. If 1.23 mg of lead nitrate are consumed, what is the mass of the potassium nitrate produced?
asked by stocihs hard 
Chemistry
Calculate the pH at 298K of solutions having the following ion concentrations? A. [H+]=1.0 x 10^4M B. [H+]=5.8 X 10^11M for A do you subtract 1.0 X 10^14 from H+]=1.0 x 10^4M
asked by Anonymous 
PHYSICS
Two 2.5cmdiameter electrodes with a 0.10mmthick sheet of Teflon between them are attached to a 9.0V battery. Without disconnecting the battery, the Teflon is removed. a) What is the charge before the Teflon is removed? Q= C b) What is the potential
asked by JOTHEY 
physics
in a daring rescue by helicopter, two men with a combined mass of 172 kg are lifted to safety. a)If the helicopter lifts the menstraight up with constant acceleration, is the tension in the rescue cablegreater than, less than, or equalto the combined
asked by Jim 
Chemistry
Why does changing the volume of the reaction vessel have no effect on this equilibrium? CO(g) + Fe3O4(s) CO2(g) + 3FeO(s)
asked by Sammy 
intermediate algebra
A farmer with 3000 feet of fencing wants to enclose a rectangular plot that borders on a straight highway. If the farmer does not fence the side along the highway, what is the largest area that can be enclosed?
asked by irma 
Math
Suppose a brewery has a filling machine that fills 12 ounce bottles of beer. It is known that the amount of beer poured by this filling machine follows a normal distribution with a mean of and a standard deviation of 0.04 ounce. Find the probability that a
asked by Anonymous 
Chemistry
If 15.0 kJ are released when 1.40 g of F2 reacts with an excess of SiH4, complete the thermochemical equation below. SiH4(g) + 2 F2(g) SiF4(g) + 4 HF(g) ÄHrxn = ?kJ
asked by Megan 
chemistry
Most natural gas consists of about 90% methane, CH4. Assume that the solubility of natural gas at 20 C and 1 atm gas pressure is about the same as that of CH4, 0.02 g/kg water. If a sample of natural gas under a pressure of 20 atm is kept in contact with
asked by david 
Chem again
The solubility of Acetanilide in hot and cold water is: Temperature.........Solubility in 100ml H20 100C....................5.5g 0C........................0.53g What is the maximum recovery if 5.0g of acetanilide is recrystallized from 100mL of water? My
asked by Natasha 
physics  PLEASE HELP
A person whose eyes are H = 1.62 m above the floor stands L =2.24m in front of a vertical plane mirror whose bottom edge is 43 cm above the floor. What is the horizontal distance x to the base of the wall supporting the mirror of the nearest point on the
asked by DJ 
ScienceChem
Sucrose, C12H22O11, is burned to produce carbon dioxide and water. What is the balanced formula and reaction type?
asked by Jacob 
physics
How many coulombs of positive charge are in 3.8 mol of O2 gas?
asked by deb 
Psychology
Andy, a high school sophomore, lacks selfdiscipline, fails to plan ahead, and is excessively anxious. He is quickly frustrated by challenging tasks and frequently becomes overly critical of others. Use the psychoanalytic and socialcognitive perspectives
asked by Amy 
Physics
A 50.0kg person takes a nap in a backyard hammock. Both ropes supporting the hammock are at an angle of 15.0degrees above the horizontal. Find the tention of the ropes.
asked by Jim 
Physics
Pulling up on a rope, you lift a 4.35kg bucket of water from a well with an acceleration of 1.78m/s^2. What is the tension in the rope?
asked by Steve 
College Chem.
If 20.0 mL of glacial acetic acid (pure HC2H3O2) is diluted to 1.30 L with water, what is the pH of the resulting solution? The density of glacial acetic acid is 1.05 g/mL.
asked by Katherine 
7th grade
how did some people hope to solve the problem of california's isolation from the rest of the country
asked by marcus 
Math
Suppose a brewery has a filling machine that fills 12 ounce bottles of beer. It is known that the amount of beer poured by this filling machine follows a normal distribution with a mean of 12.41 ounces and a standard deviation of 0.04 ounce. Find the
asked by Anonymous 
physics
In a daring rescue by helicopter, two men with a combined mass of 172kg are lifted to safety. (a) If the helicopter lifts the men straight up with constant acceleration, is the tension in the rescue cable greater than, less than, or equal to the combined
asked by Matt 
Chemistry
Calculate the pH of .100M of HClO2.
asked by Robert 
Physics
The magnification of a convex mirror is +0.65X for objects 2.8 m from the mirror. What is the focal length of this mirror?
asked by Anonymous 
intermediate algebra
A farmer with 3000 feet wants to enclose a rectangular plot that borders on a straight highway. If the farmer does not fence the side along the highway, what is the largest area that can be enclosed?
asked by irma 
Math 208
stan invested $5,000, part at 8% and part at 17%. intrest at the end of the year is $490, how much did he invest at 8%
asked by Tiffany 
Chemistry
Calculate the pOH and pH at 298K of solutions having the following ion concentrations A.[OH] = 1.0 X 10^12 B.[OH] = 1.3 X 10^2
asked by Anonymous 
English
Type the prepositional phrases in the boxes. In 1647 the first taxsupported schools were established by law in the United States. i think it (taxsupported)(by law)in the (united states)
asked by nicky 
chemistry
How much heat (in Joules) is gained by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 15C?
asked by debra 
Physics
When a ceiling fan rotating with an angular speed of 1.65 rad/s is turned off, a frictional torque of 0.263 N·m slows it to a stop in 4.75 s. What is the moment of inertia of the fan?
asked by Tory 
college chem
How much heat (in Joules) is gained by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 15C?
asked by debra 
geometry
State a conclusion that seems reasonable. Donald is older than Jeanette; Donald is older than Ethel. Donald is older than Allen. Conclusion:
asked by amy s 
Enhancing childrend selfesteem
It's important to help children develop positive selfesteem because
asked by Anonymous 
Physics
A ski trail makes a vertical descent of 78.0 m (as shown in the figure below ). A novice skier, unable to control his speed, skis down this trail and is lucky enough not to hit any trees. If the skier is moving at 12.1 m/s at the bottom of the trail,
asked by Sarah 
MATH
13. A tree casts a shadow of 17 ft. The angle of elevation from the tip of the shadow to the top of the tree is 68°. To the nearest foot, what is the height of the tree? 14. The angle of depression of a diver from the boat is 34°, and the diver is 367 ft
asked by Karla 
organic chemistry
how do you increase the yield of triphenylmethanol in a grignard reaction?
asked by Rachel 
Physics
A cyclist starts from rest and pedals so that the wheels make 7.7 revolutions in the first 5.1 s. What is the angular acceleration of the wheels (assumed constant)?
asked by Max 
Chemistry
Determine the pH of 0.18M NH4Cl.
asked by Katelynn 
Physics 1111: Orbitals and Distance
A planet has two satellite moons. Moon X has an orbital period of 2.27 days. Moon Y has an orbital period of about 3.40 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.
asked by Sar 
organic chemistry
how do you increase the yield of triphenylmethanol in a grignard reaction?
asked by Rachel 
Chemistry
Consider the gasphase equilibrium A ⇌ B. In a series of experiments, different initial amounts of A and B are mixed together, and the mixture in each case is allowed to come to equilibrium. Which one of these experiments would yield values for the
asked by Val 
Chemistry
when heated, sodium bicarbonate, NaHCO3, decomposes into sodium carbonate, Na2CO3, water, and carbon dioxide. If 5.00 g of NaHCO3 decomposes what is the mass of the carbon dioxide produced?
asked by stocihs hard 
Chemistry
when heated, sodium bicarbonate, NaHCO3, decomposes into sodium carbonate, Na2CO3, water, and carbon dioxide. If 5.00 g of NaHCO3 decomposes what is the mass of the carbon dioxide produced?
asked by Kay 
Chemistry
What are the independent and dependent variables when determining the percentage water in hydrated copper sulfate salts, while designing the experiment? The question states 'Select sensible amounts to make the independent variable the limiting reagent and
asked by Veronica 
Chemistry
Consider the gasphase equilibrium A ⇌ B. In a series of experiments, different initial amounts of A and B are mixed together, and the mixture in each case is allowed to come to equilibrium. Which one of these experiments would yield values for the
asked by Val 
chemistry
A gas that occupies a volume of 6.75L at 89.0atm will occupy what volume at 68.55mm Hg if the temperature remains constant? (89.0atm/0.09atm)*6.75=6,680 V2=6680 Is this right??
asked by Shannon 
CHEMISTRY
In some solid calcium carbonate samples, calcium bicarbonate, Ca(HCO3)2, is also present. Write a balanced euation for its reaction with hydrochloric acid.
asked by jEFFREY 
social studies
what effect did california's rapid population growth have on californios and native americans
asked by marcus 
physics
A current I = 16 A is directed along the positive xaxis and perpendicular to a magnetic field. A magnetic force per unit length of 0.15 N/m acts on the conductor in the negative ydirection. Calculate the magnitude and direction of the magnetic field in
asked by Raul 
chemistry 1
A ^H corresponds to an process is it negative, endothermic
asked by jeanette 
geometry
G lies on the perpendicular bisector of segment AB, AG = x2 + 4x, and BG = x + 18. Find AG
asked by nadia 
Chemistry
A 5.80 g sample of SiH4 and an excess of oxygen were placed in a reaction container surrounded by 3.40 kg of water. The initial temperature of the water was 14.10°C. At the end of the reaction, the temperature of the water was 48.90°C. Assume the heat
asked by Megan 
geometry 10
State a conclusion that seems reasonable. 6 + 0 = 6, 8 + 0 = 8, 9 + 0 = 9, 100 + 0 = 100. Conclusion:
asked by yelena 
Physics
Pulling the string on a bow back with a force of 28.7 lb, an archer prepares to shoot an arrow. If the archer pulls in the center of the string, and the angle between the two halves is 138*, what is the tension in the string?
asked by Chels 
4th grade
Finding angles in a circle
asked by Anonymous 
Physics
The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 1023 are released from rest, with m1 at a height of 0.87 m above the floor. When m1 hits the ground its speed is 1.4 m/s. Assume that the pulley is a uniform disk with a
asked by Mary 
Global Studies
Need to develop a thesis statement for an essay on the Israeli/Palestinian conflict. Any ideas possibly involving a 2 state solution, or nonviolence at the borders.
asked by CD 
chemistry
What volume of O2 gas, measured at 297K, is needed to completely burn all the methane (CH4) in a 3.00L container at the same T and P?
asked by Shannon 
English
Type the prepositional phrase in the box. The Grand Canyon is in Arizona. i put (in) an i got it wroung and then i put (the) and got that wroung THEN i put (is in)
asked by nicky 
Chem
What characteristics define a system at equilibrium?
asked by Saul 
4gr math
an adult cheetah weighs about 130 pounds. an adult mountain lion weighs about 170 pounda. a student estimates that a mountain lion weighs about twice as much as a cheetah. is the estimate reasonable? explain why or why not
asked by jojo 
Chemistry
118 g of a metal at 82.0°C are added to 50.0 g of water at 31.1°C. When the system reaches constant temperature, the temperature is 40.0°C. What is the specific heat of the metal? The specific heat of water is 4.184 J/g·°C.
asked by Tiffany 
College Chemistry II
Determine the pH for .16M of NaC2H3O2. Determine the pH for .18M of NaCl.
asked by Ashley 
Chemistry
Determine the pH of 0.18M NH4Cl.
asked by Katelynn 
Biology
1. Sponges a. are nonsymmetrical and have oscula b. lack organization into tissues and organs but have specialized cells c. possess cells that are capable of recognizing other sponge cells and have a simple digestive system d. both a and b I'm so confused
asked by mysterychicken 
English
1. He is not our age. 2. He is not of our age. (Does #1 come from #2? Is 'of' omitted in Sentence 1?) 3. Who is a math genius? 4. Hana is. 5. Hana is a math genius. 6. It is Hana. 7. She is Hana. (Which ones are the answers to the question, #3?)
asked by rfvv 
psychology
Which is an appropriate way for subordinate to begin a message to her supervisor letting him know what that company has been fined due to safety violations in their department? a) Something horrible has happened! b)We received notice today that we are
asked by vedrana 
sicence
Almost all maps have these four things: A)scale, legend, title, and compass B)rock units, legend, symbols, and scales C)contour lines, scale, legend, and compass D)rock types, legend, compass, and scale
asked by nicky 
math
Simplify the given equation. 17x  6 + 3x  5 = x + 11 + 4x A)20x  11 = 5x + 11 B)20x + 1 = 5x + 11 C)9x = 16x
asked by nicky 
Algebra II
An appliance store manager is ordering chest and upright freezers. one chest freezers costs $250 and delivers a $40 profit. One upright freezer costs $400 and delivers a $60 profit. Based on previous sales, the manager expects to sell at least 100
asked by Sara K. 
Chemistry
Determine the pH of 0.18M NH4Cl.
asked by Katelynn 
Math
Wright two differnt word phrases fo the expression t/30
asked by Cameron 
math
Find the time for two people working together to complete a task if it takes them 4.5 hrs and 6 hrs working individually.
asked by bernette 
ChemistryTitration
Acid (Unknown) Solution: HCL Molar Ratio: 1:1 Volume:20 ml Concentration:? Base(Known) Solution: NaOH Molar Ratio 1:1 Volume 26 ml Concentration:0.1
asked by Karla 
P. Chemistry
A solution of HNO2 is at equilibrium: HNO2(aq) + H2O(l) ⇔ H3O+(aq) + NO2(aq) Water is added. After the water is added, is there any shift in the equilibrium?
asked by Tommy 
ALGEBRA
1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by C = __6,000__ (all supposed to be underlined) 3003x a. What is the cost to remove 75% of the pollutant? b. What is the cost to remove 90% of the pollutant? c. What is the
asked by GGIFT 
chemistry
How many grams of NaN3 are required to produce 17.4 ft3 of nitrogen gas?
asked by Kerry 
chemistry
A gas that occupies a volume of 6.75L at 89.0atm will occupy what volume at 68.55mm Hg if the temperature remains constant?
asked by Shannon 
Chemistry
Determine the pH of 0.18M NH4Cl.
asked by Katelynn 
History on WW1
How did President Wilson use Russia's democratic revolution to gain support for the war?
asked by Helga 
Physical science
A man drinks a bottle of beer and proposes to work off it's 460 kj by exercising with a 20kg barbell. If each lift of the barbell from chest height to over his head is through 60 cm and the efficiceny of his body is 10 percent under these circumstances,
asked by Cindy 
physics
a basketball of mass 0.5 kg is dropped from restfrom a height of 1.34m.it rebounds to a height of 0.6m. how much mechanicalenergy was lost during the collision with the floor?
asked by emma 
English
What is the difference between 'female friend' and 'girlfriend'? Does 'girlfriend' have any negative connotation?
asked by rfvv 
6th grade
For every 25 mm of rain falling on the avarage home, 5000 L runs off the roof. Some people use barrels to collect this rain water. Cecila's town usually has 2625mm of rain each year. How many litres of water can be collected by using barrels?
asked by Kelsey 
8th grade math
do you have anything on linear equations or categories on FCAT because I need to study. :)
asked by caroline 
Algebra
The sides of a square are onethird as long as the sides of an equilateral triangle. The difference between their perimeters is 20 centimeters. How long is each side of the triangle? Define your variables. Thx
asked by Renee 
math214
A box contains four red marbles, seven white marbles and five blue marbles. If one marble is drawn at random, find the probability for each of the following: (a) A blue marble drawn. _____________ (b) A red or a blue marble is drawn. _____________ (c)
asked by alicia 
Calculus
Please help me with this problem: Find the number c that satisfies the conclusion of the Mean Value Theorem. f(x) = x/(x + 4) [1, 8] i got to f'(x)= 4/(x+4)^2=(1/60).
asked by Sarah 
Geometry
Suppose you are studying bacteria in biology class the table shows the number of bacteria after n doubling periods n(periods)[0 1 2 3 4 5] billions of bacteria [3 6 12 24 48 96] your teacher asks you to predict the number of bacteria after 8 doubling
asked by Anonymous 
Chemistry
Calculate the pOH and pH at 298K of soloutions having the following ion concentrations A.[OH] = 1.0 X 10^12 B.[OH] = 1.3 X 10^2
asked by Anonymous 
Chemistry
How do I distinguish between the limiting reactant and excess reactant in a chemical equation?
asked by Ana 
English
My new friends are all great. 1. How do you like them? 2. What do you think about them? 3. How do you feel about them? 4. What do you think of them? 5. How do you feel of them? 6. How do you think about them? (What is not correct and not the same as #1? I
asked by rfvv 
science
what is lava
asked by nayaan 
college chem
How much heat is absorbed by the calorimeter if the temperature change is 8 C and the calorimeter constant (Heat Capacity) is 3.3 J/K? Your Answer:
asked by debra 
Health Care
Create a list of 15 different medical terms contained within the article. Define each term; then, break each term down into its prefix, suffix, and word combining form, provide a definition of each word part
asked by Sunshine262 
calculus
alice is flying a kite. Her hand is three feet above ground level and is holding the end of a 300footlong kite, which makes an angle of 57 degrees with the horizontal. How high is the kite above the ground?
asked by lisa 
college
1.You want children to walk in the hallway.If they begin to run,the best thing to say to redirect them is:a."Stop running" b."Walk in the hallway" c."Running is for outside" d."We don't run"
asked by vanessa 
math
a shaded portion of a rectangle is 2/5 of the total area....How much of the total area is not shaded...A.5/2 B.3/5 c.5/3 d.3/10.
asked by michelle 
Algebra II
Find the complex zeros of the polynomial function: x4+5x2+4
asked by I Need Help 
Chemistry
Determine the pH of 0.18M NH4Cl.
asked by Katelynn 
Chemistry
4.54 g of hydrazoic acid ( HN3 ) is added to water to make a final solution of 504 ml. What is the pH of the solution ? Use Ka = 1.90 × 10−5
asked by Chelsea 
chemistry
How many grams of AgBr are produced from 2.50g of cobalt II bromide? Using this chemical reaction: AgNO3+CoBr>CoNO3
asked by Anonymous 
math
simplify 3/4 + 5/8 over 3/4  1/2
asked by Anonymous 
education
A major goal of a child's transition to a new program is to: a.meet new people b.learn new skills c.meet new teachers d.transfer skills
asked by jay 
trig
Solve the following for x, where 0 < x < 2 pi. 2 cos^2 x + cos x = 1
asked by Sandy 
psychology
It is the case that good communicators advance more quickly in the company.Which of the following would be the best revision of this sentence? a) "Good communicators advance more quickly in the company." b) "It is true that good communicators advance more
asked by vedrana 
Earth Science
Judging from the sizes of the beforeandafter craters atop Mount St. Helens (Figs. 4.8 and 4.9 of the Lab book), which volcanic event appears to have been the more explosive, the last one before 1980, or that which occurred in 1980
asked by Anonymous 
POS/110
I need some help. I am doing a one day journal on how the federal and state bureaucracy affects my daily life. Can someone please give me several examples? I have a few things in mind, like the food I eat and how it is inspected by the FDA. Any suggestions
asked by Sarah 
Business Management
Your management team has been retained by a senior manager who is concerned about the effectiveness of his managers and their teams. He would like your team (the team of employees writing the guide) to develop a training guide on delegation. The training
asked by Sherry 
English
1. She was very slow at the beginning, but she didn't give up. (What is the opposite of 'at the beginning'? Is it 'at the end, in the end or by the end'?) 2. Wilma tried very hard to be able to walk again. (What is the function of 'to be able to walk
asked by rfvv 
statistics
what does 9E4 mean? It came up as an answer to a problem i went through on my calculator
asked by steve 
English
There are many women in this world that display exclusively positive traits and behaviors. Those traits can be :caring, helpful, understanding, encouraging, respectful, lovable, thoughtful, etc. My question is : What ideas about women are reinforced by
asked by Sara 
psychology
During a group meeting when they are each reading a draft of their normal report,Madiha and Anne realize that sometimes they have used the word "there" correctly and sometimes the word should be "their".They use their word processor's "find" feature to
asked by vedrana 
Biology
I have a question: Name the differences in muscles between a weightlifter and long distance runner? A long distance runner has lean muscles but would you say weightlifters have bulk for muscles? I can't find a web site to help me. Any ideas. Thanks
asked by Sue 
ALGEBRA
please help me explain this in 50 words.. Explain why the equation 6(x + 3) = 6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.
asked by SAMANTHA 
Physics
A solid disk rolls along the floor with a constant linear speed v. (a) Find the fraction of its total kinetic energy that is in the form of rotational kinetic energy about the center of the ball. Krot/Ktotal = ?
asked by Ace 
Chemistry
46.9 g of a substance at 90.8°C is added to 51.8 g of water at 24.8°C. The final temperature of the water and substance is 40.5°C. The specific heat of water is 4.184 J/g·°C. What is the specific heat of the substance? I think the equation that I need
asked by Tiffany 
Physics
A rectangular piece of gold is 3.1 cm long and 3 cm wide. Resistivity of gold is 2.4*10^8. How deep is the piece when it displays a resistance of R = 1.65 μω for a current that flows along the depthdirection? I used R=(p*l)/A and solved for l. I got
asked by Lily 
English
I have a prompt for an English essay and it says, "In a well developed composition, identify the character, describe what the character questions about society, and explain why the character's questioning is important to the meaning of literature." It's
asked by Ana 
English
Type the prepositional phrases in the boxes. Kentucky bluegrass was brought to America from Europe. ____?____ _____?_____ i put (to) and (from) then i put (from) (europe)
asked by nicky 
chemistry
How much heat is absorbed by the calorimeter if the temperature change is 8 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?
asked by debra 
precal
verify: tanx secx = 2tanx
asked by john2 
Math
a circular track runs around a park. there is a sidewalk that connects two points on the track that runs through the center of the park. the sidewalk is 100 ft. long. How long is the track to the nearest half foot?
asked by Chris 
Math
One of the world's fastest roller coasters is located in a theme park in Valencia, California. Riders go from 0 to 100 miles per hour in 7 seconds. Find the acceleration of the roller coaster during this time interval in miles per second squared.
asked by Monica 
math
a sample that is not representative of the entire population
asked by taylor 
Chemistry
I am reading through material for a recrystallization experiment, and I had a few things I wasn't sure about;  Why once filtered, should the recrystallization solution be allowed to cool slowly, undisturbed, rather than quickly? and What makes a good
asked by Natasha 
Pre Calculus
complete the identity: sin^4 xcos^4 x
asked by moi 
math
What is the answer to t=100(n+3)? Solving for N.
asked by matt 
Spanish
We are learning Indirect object pronouns and I need help with the following questions. Traduce las frases al espanol. 11. He asked her for more money. 12. I gave you your present. 13. She bought you a new dress. 14. He prepared dinner for us. 15. Musicals
asked by Kelsey 
Physics
A 15 μA current starts flowing in a circuit with a 3.0 μF capacitor of area 40 cm^2 at t = 0 s.(a) How fast is the voltage across the capacitor plates changing at t = 0 s? (b) Use the result of (a) to calculate the following at t = 0 s.(i) dφB/dt in
asked by Sandhya 
survey of accounting
1. A corporation issues $18,000,000 of 6% bonds to yield an effective interest rate of 7%. a) was the amount of cash received from the sale of the bonds more or less than $18,000,000? b) identify the following amounts related to the bond issue: 1) face
asked by ravi 
business research
The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this year’s students significantly different from the longrun average? At what alpha level would it be significant
asked by joi 
Math
Solve the inequality. Other than , graph the solution set on a number line. 12x  3 > 3(3x  9)
asked by DK 
physics
Calculate the magnetic field at the center of a wire square that consists of 120 loops and has sides of length 5 cm and carries a current of 0.7 A.
asked by Sandhya 
Ashworth
If it took 5 seconds to lift the crate,using a machine,what was the power rating of the machine.
asked by Daquindre 
Accounting
Assume a $4000 investment and the following cash flows for two alternatives. Under the payback method, which of the following would be concluded? a. Investment X should be selected b. Investment Y should be selected c. Investment X and Y provide the same
asked by Anonymous 
education
1.Transition planning for children with special needs should focus primarily on: a.maintaining continuity of services b.getting the child ready for school c.the family's needs d.the child's needs. My answer is d.the child's needs. Will someone please check
asked by vanessa 
English
Rewrite this fluently into 2 or 3 sentences. Don't use 'and' more than once and avoid using 'then'. I awoke in the darkness. I was in great pain. I was tied up. I heard the roaring of water. I heard thunder. I also heard sailors shouting. The whole world
asked by Sara 
ETH
What roles have politicians, Muslim groups, Christian groups, and others played in the development of this image?
asked by Anonymous 
ALGEBRA
Post your 50word response to the following: Explain why the equation 6(x + 3) = 6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.
asked by SAMANTHA 
education
A major goal of a child's transition to a new program is to: a.meet new people b.learn new skills c.meet new teachers d.transfer skills
asked by vanessa 
History
According to L. M. Bowers, what are some of the complaints made by the workers at the Colorado Fuel and Iron Company, and how does he claim they have addressed those complaints?
asked by Taylour 
social studies
I need help on these questions: 1.) What is the name of someone who sold wares and spread news in Colonial Times? 2.) What did children ages six to eight attend in the Colonial Times? 3.) Windows were made by soaking cloth in WHAT oil? 4.) What is the game
asked by Brookelle 
Physic
Ok so this question was posted before but I'm confused by the answer. The problem is: The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 1023 are released from rest, with m1 at a height of 0.87 m above the floor. When m1
asked by Kelsey 
English
There are many women in this world that display exclusively positive traits and behaviors. Those traits can be :caring, helpful, understanding, encouraging, respectful, lovable, thoughtful, etc. My question is : What ideas about women are reinforced by
asked by Sara 
Geometry
The perimeter of a rectangle is 76 feet. If the width is doubled and the length is halved, the new rectangle will have a perimeter of 62 feet. Find the dimensions of the original rectangle. Define your variables.
asked by Albert 
Chem
Is there an easy way to rewrite PV=nRT so that it equates density with molar mass?
asked by Peter 
Chemistry
Could someone explain the reasoning for this? 6) Which of the following is a false statement about ALL reactions in equilibrium? a) Increasing temperature shifts the reaction toward the products in an endothermic reaction b) Temperature effects on the
asked by Val 
English
Some people can have really bad traits such as being dishonest, mean, strict, bossy, dirty, etc. What stereotypes about men are reinforced about these images? These types of people could easily tarnish their own reputations. Men with these types of
asked by Sara 
Chemistry
Copper has a specific heat of 0.387 J/g·°C. How much energy is required to raise the temperature of 140. g of copper from 17.5°C to 154.0°C?
asked by Megan 
Chemistry
What is the specific heat of a substance if 35.5 kJ are required to raise the temperature of 345 g of the substance from 69.0°C to 150.0°C?
asked by Megan 
Chemistry
94.0 g of a metal at 88.0°C are added to 55.0 g of water at 26.0°C. When the system reaches constant temperature, the temperature is 39.3°C. What is the specific heat of the metal? The specific heat of water is 4.184 J/g·°C.
asked by Megan 
Psychology/Statistics
Do students at various universities differ in how sociable they are? Twentyfive students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other students.
asked by Charles 
Organic Chemistry
Can you tell me what the systematic name for a compound which has a carbon attached to a phenyl, a double bonded oxygen, and a single bonded oxygen and then a 3 carbon chain is attached to the single bonded oxygen?
asked by Max 
precal
find the exact value of the expression: csc (tan^1 ã3/3)
asked by adam2 
ALGEBRA
When solving a rational equation, why is it necessary to perform a check?
asked by GGIFT 
precal
use a right triangle to write the expression as an algebraic expression. assume that x is positive and in the domain of the given inverse trigonometric function. sin(sec^1 ãx^2+ 25/(x))
asked by adam2 
business
Which of the following selections contains a fragment? If none of the selections contains a fragment, select "Correct." (Points: 5) To prepare for the 10K race. Eric eliminated greasy foods from his diet and began eating fresh fruits and vegetables. He
asked by lea 
science
what is lava q2 what r the three resource of nature
asked by nayaan 
PreCal(Please help)
1) Use the halfangle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67 degrees 30'
asked by Abbey 
math
A)Round 7.86 up to the next integer. B) Round 0.04837 to the nearest hundredth. C)Round 437 down to the preceding ten. D)Estimate 64.2789 + 37.7825 to the nearest integer.
asked by Anonymous 
precalculus
find the exact value: cos^1 (square root of 2 divided by 2)
asked by john 2020 
English
Can you check these sentences for me, please? Thank you very much in advance. 1) Beowulf and the Dragon wrestle amid sheets of fire. As the flames billow, Beowulf's companions rush away in terror. 2) Only one, Wiglaf, feels enough loyalty to come to the
asked by Franco 
Phiysics
Pulling up on a rope, you lift a 4.35kg bucket of water from a well with an acceleration of 1.78 m/s2. What is the tension in the rope?
asked by Jim 
Chemistry
where does the n come from in a compound such as nbutane?
asked by Val 
6th grade
what does an introduntion paragraph consist of
asked by Anonymous 
Math
Factor by introducing an appropriate substitution. 5y10  31y5  28
asked by DK 
social studies
a study of the causes of american revolution of 1776,the french revolution of 1789,and the Russian Revolution of 1917 best supports the generalization that revolution is most likely to occur when
asked by kathy 
librarianship
what kind of services the 21 century library can provide.
asked by aliyu 
psychology
You are in a group that feels very cohesive,so cohesive that it seems to agree readily at every step of project,without any lengthy discussion or conflicy.Sometimes you don't agree with decisions,but you do not say anything.Which of the following is the
asked by vedrana 
chemistry
how do I convert 17.4 cubic ft into liters?
asked by Shannon 
librarianship
what are those organisation that donate grant to libraries
asked by aliyu 
spanish
tu gran gusta en las cama mean?
asked by melitussa 
Us after 1877
Why would the Knights of Labor oppose child labor beyond the obvious reason that children should not be forced to work? What about their opposition to convict labor?
asked by Lacy 
education
Transition planning for children with special needs should focus primarily on: a.maintaining continuity of services b.getting the child ready for school c.the family's needs d.the child's needs
asked by vanessa 
math
do 5 + x and x + 5 represent the same expression? explain.
asked by Cameron 
algebra
How do you solve the expotential notation equation 1206^2/4x8?
asked by Jane 
ALGEBRA
Beagleboy how do I explain that in 50 words? Post your 50word response to the following: Explain why the equation 6(x + 3) = 6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.
asked by SAMANTHA 
English
I forgot to include the following questions for you to check. Thank you very much. 7) The interviewee got together with two friends of him and they dressed up like a seventies pop group in Afro wigs and dark glasses. 8) His girlfriend had also arranged for
asked by Franco 
psychology
"Investors and their wives" is considered sexiest because: a)investors may be female b)not all investors are married c)"investors" refers only to woman d)business document should not mention people's lives outside work I doubt between A and B?Can you help
asked by vedrana 
statistics
what is an example of a statistical abuse in the media during the past week?
asked by cortez 
language arts
what are sentences for Sulkily, Certainty, Indifferent, Undoubtedly, Heartily, protruded, & Loathe?
asked by priscilla 
math
In how many different ways can 8 riders be matched up to 8 horses? Explain answer please.
asked by Mitchell 
language arts
what are sentences for Indifferent, Undoubtedly, Heartily, Protruded, & Loathe?
asked by priscilla 
CRT205
(I did not get some answers correct on this categorizing fallacies assignment. It was graded but not with the correct answers. Can someone help me by telling me which type of fallacies the below statements are please so I can understand better. Thank you!)
asked by Zoe 
economics
Gasoline and beer are monopolistic competition. But why the prices of gasoline always changes while beer's price is constant?
asked by uno 
language arts
Whats a sentences for indifferent?
asked by priscilla perez 
precal
simplify: csc²x secx
asked by john2 
language arts
do you know a sentence for undoubtedly
asked by priscilla p. 
CRT/205
what is the premises and the conclusion of this argument? since it is the very nature of terrorism not only to cause immediatw damage but also to strike fear in the hearts of the population under attack, on might say that the terrorists were extraordinary
asked by keshia 
9th grade
What are the similarities of ozone depletion and uv light
asked by adriana 
Biology
What are two different ways that genes are identified in prokaryotic versus eukaryotic genomes.
asked by Jess 
Temple College
had some Psychology homework resereching a female Psychiatrist named Viola Brody. but when i reaserch her online through all the major search engines i come up empty. all i've found so far is that she wrote a book witch i already knew. can you help me with
asked by Joshua 
math
how did you get that answer from the question renee posted
asked by josh 
SOCIAL STUDIES
In the 1800's, what was being used o pull the canal boats?
asked by Happy Face 
science
a thick,sharedged gray cloud is probably made of ? not?
asked by desjanna 
4gr math
how many degrees cooler is a temperature of 34.f to a temperature of 47.f
asked by jojo 
EXCEL
I need New Perspectives on Microsoft Office 2007, First Course , Premium Video Edition's In Excel Part Tutorial 2 Exercomp Sales Report Review X410 Case 1 Frosti case 2 GrillRite
asked by MP 
8th grade
what were two goals of american diplomacy in the 1930s?
asked by molly 
math214
There were seven nominees for president and four nominees for vice president. In how many ways can the state be chosen?
asked by alicia 
math214
a) Find 28° 29’ 46”  16° 48’ 59’’ (b) Express 5.4° in terms of  degrees  minutes  seconds
asked by alicia 
Chemistry
How do I distinguish between the limiting reactant and excess reactant in a chemical equation?
asked by Ana 
sicence
Select all of the answers that apply. A map _____. 1)is a representation of the earth's surface 2)is a portable document describing an area 3)can provide data such as migration trends, directions, and rock composition 4)provides all of the information
asked by george 
biology
when decomposers are unable to break down industrial wastes,they become more concentrated as they move through the food chain.this process is called biological ? can anyone please help me.
asked by me 
GEOGRAPHY
1)The branches of rivers within a delta are called:(a)tributaries(b)confluences(c)distributaries(d)meanders 2)All of the following are conditions that m,ust be met so that deltas may form except:(a)steep drop in the sea floor(b)area protected from strong
asked by Devaughn 
math
ya but where did you get the 4x? SORRY!
asked by josh 
math
What is the solution set of the given equation? 4y  6y + 9y = 2 A){2/11} B){2/7} C){2/7} D){2/11}
asked by nicky 
precal
complete the identity: sin^4xcos^4x
asked by adam2 
Environmental Protection
Looking for some links to articles on the Environmental Protection so that I can develop a policy statement  Basic Policy Statement Justification for the policy Those to whom the policy applies
asked by Norma 
2nd grade english
What is the hidden word in these letters. tiningtesre Thanks.
asked by MONA 
math
OH,,, well i found out what i needed.. THANKS FOR YOUR HELP SO FAR!!!! :)
asked by josh 
environmental science
what is a example of mutualistic symbiosis between the organisms of fungus and a photosynthetic alga?
asked by jess 
English
I am working on questions from the book "To Kill a Mockingbird" and i need help with this question: 1. Using Jem's description of Boo, how does Harper Lee makes it clear that we are looking through a child's eyes?
asked by Donut 
computer science
I need help with c++ on the codeblocks. when i run the program with lines of code, i get this warning. warning: command line option "Wmain" is valid for C/ObjC but not for C++ can anyone tell me what this mean???
asked by jaylin 
Algebra
how to do a common monomial factor?
asked by CMF 
English
In your opinion, does the Fairness Doctrine violate freedom of the press or freedom of speech? Why or Why not?
asked by Betty 
statistical applications
when is random sampling not the best approach to sample selection?
asked by anette 
statistics
survey revealed two percent of students did not select stat. for biz. suppose we select a sample of 10 students. what is the probability that 3 students selected stat. for biz? how many students would you expect to select stat.for biz?
asked by nora 
math
Evaluate 96 96___ 96
asked by Janae 
logic
3. Translate the following argument into symbolic for, and determine whether it's logically correct by constructing a truth table. If the team wins, then the team remains in the playoffs. If the team stays in the playoffs, then the championship is within
asked by bill 
trigonometry
2. two look out situations, which are 25 miles apart along the coast on a northsouth shoreline, spot an approaching yacht. One lookout station measures the direction to the yacht at N33 degrees E, and the other station measures the direction of the yacht
asked by bill 
science
okay after the diver jumps foward from the diving board,the force of gravity will accelerate the diver PARALLEL to the direction of motion , is the uppercase true or false?
asked by jack 
Marine Science
I've searched and read so many things but i have yet to find the answer that my teacher is looking for. What percentage of energy is transferred from a producer to a: (A) secondary consumer, (B) tertiary consumer, (C) quaternary consumer?
asked by Christin 
early childhood education
1.A child's noncompliance is often due to all of the following EXCEPT: a.too many rules b.not enough choices c.poor ability to understand d.a bad personality
asked by vanessa 
math
i don't get this circle a has a diameternof 10 feet. rounded to the tenths place, the are of circle a is what?
asked by Deanna 
Physics Tough question!
A pond has the shape of an ice cream cone with the tip slices off and has a depth of 5.00m. The atmospheric pressure above the pond is 1.01 *10^5 Pa. The circular top surface (radius = R2) and circular bottum (radis = R1) of the pond are both parrallel to
asked by ALan