Questions Asked on
July 3, 2012

Physics
What is the force at which a bowling ball when it sticks the pins given the final speed of the bowling ball. Now account for friction and angular rotation of the ball
asked by Ron 
Physics
Two crewmen pull a boat through a lock, as shown in the figure. One crewman pulls with a force of F1 = 145 N at an angle of θ = 32° relative to the forward direction of the raft. The second crewman, on the opposite side of the lock, pulls at an angle of
asked by Anonymous 
Calculus
Find the dot product of (u+v)*w u=1,3 v=2,4 w=2,5 Answer choices: A:37 B:37 C:29 D:33 E:29 F:9
asked by Brock 
Physics
a cross country runner runs 3km due east, 5km due south and 8km south west. what is the runners final displacement?
asked by Tap 
Physics
The third floor of a house is 9 m above the street level. How much work (in kJ) is required to lift a 700kg piano to the thirdstory level?
asked by Bruin 
Math: Rounding off
Round off .6752 to the nearest tenth, hundredth, and thousandth. How do you round this off when there's a decimal?
asked by Losa 
biology
Both the description and the definition of ecology and its significance to you and the society
asked by kim 
math30
The growth of a $40 000 investment is shown in the table. Time (years) Value ($) 0 40 000 1 42 600 2 45 369 3 48 318 4 51 459 5 54 803 Use the exponential regression function on your calculator to get the function. Round a to the nearest dollar and b to
asked by alejandro 
math30
The mass of a radioactive sample is represented in the graph below. The initial mass of 32 mg decays to 8 mg after 21 hours. 1)What is the halflife of the radioactive sample, in minutes? 2)Solve each equation. a. 4 8x1 = 8 b. 3^(2x5) = 1/27x
asked by alejandro 
Algebra
Find the product for these expressions: 1. {(x+3) + y}^3 2. (a^(x+1) + b^(x2))(a^(x+1)  b^(x2)) In number 2, I came up with a^(x+1)^2  b^(x2)^2 but am little apprehensive about this. I hope you can enlighten me on both numbers.
asked by Anonymous 
Statistics
A game at the state fair has a "guesser" guess the month of your birth. You win a prize if he misses your month by more than 2 months (for ex: if you were born in April, and he guesses February, he wins; if he guessed January, you win). For simplicity,
asked by BadatStat 
physics
: a loaded truck with uniform acceleration covers the distance between two points 60m apart in 6 sec.its velocity as it passes the first point is 5 m/s .find the velocity at second point
asked by Anonymous 
Physics
Please answer asap with complete solution thanks a lot. I need the solution to answer other questions much alike to this one. :) Two electrons are 10^15 meters apart. One electron is fixed on its position. The other, originally at rest, is released. How
asked by Jezrell 
physics
How much heat is needed to be supplied to a 3.5 kg cylindrical rod if its volume changes by 1/4 of its original size? Assume that it is initially at 20K and that c = 2 cal/g.C and α = 8x10^2/C
asked by Tom 
math
write a short paragraph on rational nu mber
asked by raj 
Chemistry
What mass of sucrose (C12H22O11) would you combine with 5.28 102 g of water to make a solution with an osmotic pressure of 9.14 atm at 298 K? (Assume a density of 1.0 g/mL for the solution.) I came up with 67.5 but no luck...help please!!
asked by Anonymous 
Chemistry 1046
A metal, M, of atomic mass 91 amu reacts with fluorine to form a salt that can be represented as MFx. In order to determine x and therefore the formula of the salt, a boiling point elevation experiment is performed. A 9.05g sample of the salt is dissolved
asked by Anonymous 
Chemistry 1046
If a sample of Sr90 initially contains 1.1 mmol of Sr90, how many millimoles are left after 25.20 years? any ideas on where to start??
asked by Anonymous 
Chemistry 1046
Geologists can estimate the age of rocks by their uranium238 content. The uranium is incorporated in the rock as it hardens and then decays with firstorder kinetics and a halflife of 4.5 billion years. A rock contains 65.7% of the amount of uranium 238
asked by Anonymous 
chemistry 1046
Calculate the solubility (in grams per 1.00 102 mL of solution) of magnesium hydroxide in a solution buffered at pH = 9 the ksp of Mg(oh)2 = 2.06e13
asked by Anonymous 
chemistry 1046
Solve an equilibrium problem (using an ICE table) to calculate the pH of each solution. a solution that is 0.266 M in CH3NH2 and 0.134 M in CH3NH3Br. Kb = 4.4e4
asked by Anonymous 
chemistry 1046
A.Determine the pH of the solution. a solution that is 1.17% HCl by mass (Assume a density of 1.01 g/mL for the solution.) B. Amphetamine (C9H13N) is a weak base with a pKb of 4.2. Calculate the pH of a solution containing an amphetamine concentration of
asked by Anonymous 
Grammar and composition
on page 807, Exercise B it wants me to amswer the questions and name the reference book I used to find the answer. Question 10 is "What is the number of Buddhists in North America?
asked by Dylan 
physics
A loaded truck is going at a speed of 36 km/hr and a car starts at point 3 km behind the truck with an acceleration of 2 m/s. when will the car overtake the car? What is the distance covered by the car before it overtakes the car?
asked by chan 
Grammas and Composition 11th grade
I PURCHASED A USED BOOK TO COMPLETE A CORRESPONDENCE COURSE. PAGE 291 AND 292 IS MISSSING AND I NEED QUESTIONS 1520. CAN SOMEONE HELP ME?
asked by Dylan 
science
if you ride a bike an average speed of 4km/h and need to travel a total distance of 28km how long will it take you to reach destination. show work
asked by Anonymous 
physics
a wire 4m long carrying current of 5A place at right angle to B of 6web/m2 the force experience by the wire in SI unit is A LONG SPRING IS STRETCHED BY 2Cm and P.E stored in it is U if the string is stretched by 10 cm then the P.E stored would be
asked by palwasha 
math integrations
integral(tanx)dx
asked by bhavana 
physics
the resistance of a certain length wire having diameter 5mm is 10 omega if the diameter is change to 10 mm the new resistance in omega is
asked by palwasha 
physics
the resistance of a certain length wire having diameter 5mm is 10 omega if the diameter is change to 10 mm the new resistance in omega is
asked by palwasha 
Chemistry....help
If 0.500L of dry N2 was bubbles into an inverted flask through water to saturate it at 25.0C, what would be the total volume at the lab atmospheric pressure. Our pressure was : 757.5 mmHg
asked by Ally 
SCIENCE
describe each stage of the flow of information starting with DNA and ending with traits
asked by MS SEALS 
physics
a tire inflated to a gauge pressure of 2 bars has a nail 3mm in diameter embedded in it. what is the force tending to push the nail out of the tire?
asked by russel 
Foreign languages
Can you check if the following passive tenses are possible? Thank you. 1) The roof was being fixed The cathedral is being restored My wallet has been taken The dog is going to be taken for a walk 2) Who was America discovered by? Was this CD bought by
asked by John 
physics
a tire inflated to a gauge pressure of 2 bars has a nail 3mm in diameter embedded in it. what is the force tending to push the nail out of the tire?
asked by russel 
trig
Find the radius of a circle which a 59foot chord subtends an angle of 12degrees at the center. I Just Want To See The Illustration. I Can Handle The Rest. Thank You In Advance =)
asked by Amber 
science
How does this work, I've been asking questions but no one ever answers
asked by Yolanda 
Geometry
Christopher wants to determine how far away a helicopter is from where he is standing. He knows the helicopter is sitting on the edge of a roof of an apartment building that is 400 feet high and 1,050 feet from where he is standing.
asked by Priscila 
Chemistry help!!
Mole percent composition of earths dry atmosphere is 78% N2, 21% O2 and 1.00% Ar. Using the atmospheric pressure you recorded in the lab during this experiment (757.5 mmHg) and an ambient temperature of 25C, calculate partial pressures of these 3 gases.
asked by Ally 
english
how this sentence could be transformed into positive degree and superlative degree : prevention is better than cure
asked by R S Telagathoty 
Sci 230
Are all threat to biodiversity caused by humans? Please explain your answers.
asked by Yolanda 
physical science
what physical quantity does full glass water have over empty glass that cause it to resist change in motion over empty one?
asked by lora 
algebra
Determine the slope of a line passing through the points (2, 9) and (0.66, 9).
asked by Chad 
algebra
A building is 4 feet higher than twice the height of a tree. Define variable expressions for the height of the building and the height of the tree? A companys profit for the third quarter is 22,300 more than the profit for the first quarter. Define
asked by Ariel 
Art
I left out the following sentences. Thank you, Writeacher. 1) "I'll drive you to the train station." (she/agree) She agreed to drive me to the ... 2) "If I were you, I'd run back home." (she/advise). She advised me to run back home. 3) "I won't drive you
asked by John 
Alg I
Domain and Range of 5x3y=6
asked by Ne 
History
in the Treaty of Versailles, which nation’s approach best reflects a sincere desire to prevent another war, the policies of the United States or the policies of France? Why?
asked by Vanessa 
Art
I left out a sentence. Can you help me better express the following instruction? 1) Complete the following sentences with the past simple, past perfect, and past continuous. 1) My friend..... (be) upset because someone.....(steal) ........
asked by John 
Art
I left out these last sentences on grammar.Thank you, Writeacher. 1) If the machine stops, you press this button. Incorrect: if the machine stops, you will press this button. 2) Complete the following sentences with who, which, whose. Write the relative
asked by John 
math
suppose you drive a car with an average gas mileage of 32 miles per gallon.If you plan to take a 2500mile cross country trip,how many gallons of gasoline should you expect to use?
asked by verkesia 
Art
I still have a few other sentences to check. Thank you, Writeacher. 1) " I've spent all my pocket money on that book!" (he/exclaaim) He exclaimed that he had spent all his pocket money on that book. 2) "I'm going on a school trip tomorrow" (he/inform/his
asked by John 
math
78.125gal round to a decimal in gas terms
asked by verkesia 
math
how many cords of wood could you fit in a room that is 3yards long,3 yards wide,,and 2 yards high?
asked by verkesia 
chemistry
a piece of iron reacts with sulfuric acid and produces 250 dm^3 hydrogen gas at 27 degree celsius temperature and 99.99 kPa. Find out the mass of that piece of iron?
asked by tazvi 
Sci 230
I live in Texas, what local ecosystem or any ecosystem could I use for an assignment. I have to include its hierarchy of interactions and its biodiversity. I also have to answer how is the ecosystem dependent on the biodiversity as well as one threat to
asked by Yolanda 
chemistry
a piece of iron reacts with sulfuric acid and produces 250 dm^3 hydrogen gas at 27 degree celsius temperature and 99.99 kPa. Find out the mass of that piece of iron?
asked by tazvi 
History
To what extent does the Treaty of Versailles reflect the importance of taking responsibility for one’s actions?
asked by Vanessa 
math
a decameter is times larger than a meter?
asked by verkesia 
science
Why do we have a leap year every four years?
asked by Anonymous 
Foreign languages
Can you check these two questions, please? 1)Who coined the term Lost Generation? Who were its most representative writers? 2) Can you briefly summarise the plot of Fitzgerald’s Great Gatsby.
asked by Mike 
geometry
In triangle ABC, DE is parallel to AC. Side AD measures 5.3 units, side DB measures 8.0 units, and DE measures 4.8 units. What is the measure of AC?
asked by Karen 
geometry
Quadrilateral ABCD is similar to quadrilateral WXYZ. Side BC is 8.6 units in length, side AD is 23.1 units, and side WZ measures 15.8 units. What is the measure of side XY?
asked by Karen 
chemistry
how many joules of energy must be removed from 325g water at 35 degress celsius to form ice at 0 degress celsius?
asked by tna 
math
the land area of a country is about 5.0million square miles, and the population is about 700 million people.what is the average population density? simplfy answer and round to one decimal place as needed
asked by verkesia 
College Physics
A convergent lens forms a real image 2.41 times the size of the object. The distancebetween object and image is 62.6 cm.Find the distance of the focal point fromthe center of the lens.Answer in units of cm
asked by Molly 
Chemistry  Correction
I just wanted to be sure if my answers make any sense. Thank you; For the reaction of ammonia: N2(g) + 3H2(g) > 2NH3(g) suppose equilibrium has been established. Explain how and why the position of equilibrium will shift in response to the following
asked by Robert 
Calculus..
5. Eliminate the parameter and write the corresponding rectangular equations: x=32sin theta and y=1+5 cos theta
asked by Isabella 
math
Convert 24 quarts to liters?
asked by verkesia 
Chemistry
X=\MX=\MX=\M What is this?
asked by Lee 
physics
An electric field of 264,000 N/C points due west at a certain spot. What are the magnitude and direction of the force that acts on a charge of 6.3 µC at this spot?
asked by Natasha 
math
suppose you drive a car with an average gas mileage of 31 miles per gallon.if you plan to take a 3000 mile cross countrytrip,how many gallons of gasoline should you expect to use?
asked by verkesia 
math
How many cords of wood could you fit in a room that is 5 yards long,5 yards wide,and 2 yards high?
asked by verkesia 
math
The land area of a country is about 5.0million square miles, and the population is about 700 million people.wh
asked by verkesia 
physics
Two charges, 17 and +3.6 µC, are fixed in place and separated by 3.2 m. a) At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge. (Hint: The spot does not necessarily lie between
asked by Natasha 
math
an airplane travels a120 mile in 15 minutes.what is its speed in miles per hour
asked by verkesia 
physics
Please answer asap with complete solution thanks a lot. I need the solution to answer other questions much alike to this one. :) Two electrons are 10^15 meters apart. One electron is fixed on its position. The other, originally at rest, is released. How
asked by Jezrell 
Science
A 500g aluminum pot containing 250mL of water in the pot increases from 13.2 °C to 89.1 °C. Calculated the heat absorbed by the pot and water. I don't know the official approach to this question, somebody help!
asked by Danielle 
spanish
Oraciones Transforma los elementos en oraciones usando el subjuntivo o el indicativo. Modelo algunos animales/ ir a morir/ a menos que / haber / leyes para protegerlos Algunos animales van a morir a menos que haya leyes para protegerlos. la ciudad / ir a
asked by kevin 
Spanish
13.2 The subjunctive with doubt, disbelief, and denial Completar Completa cada oración con la forma correcta del verbo apropiado de la lista. word bank haber ir llegar querer resolver ser 1. No creo que el gobierno el problema de la contaminación
asked by kevin 
Calculus
"Leave the answer as a definite integral, but indicate how it could by evaluated by using the fundamental theorem of calculus." I solved the problem to a definite integral. Proceeding via the fundamental theorem, would involve finding the indefinite
asked by Parker 
Art
Could you please tell me which if the word choice is correct? Thank you, Writeacher!!! 1) He exclaimed that he had spent all his pocket money on that book. 2) "I'm going on a school trip tomorrow" (he/inform/his mum). He informed his mum that he was going
asked by Mike 
Spanish
ESTRUCTURA  13.1 The subjunctive with verbs of emotion Emociones Completa cada oración con la forma correcta del verbo apropiado de la lista. Usa cada palabra sólo una vez The words in () are my guess. I need help with clarification and spelling
asked by kevin 
Business Finance
Neville Corporation, an amusement park, is considering a capital investment in a new exhibit. The exhibit would cost $174,777 and have an estimated useful life of 9 years. It will be sold for $69,200 at that time. (Amusement parks need to rotate exhibits
asked by Francesca 
Art
I left out these last things. Thank you, Writeacher! 1) Can you tell me which is the correct pronunciation of Daisy Buchanan (in the Great Gatsby)? What's the name of the garage owner? (real question) 2) What about the name of the garage owner's wife? Is
asked by Mike 
Spanish
Fill in the blanks with the subjunctive form of the verbs. 1. Me alegro de que el ecoturismo (ser) un buen negocio (business). 2. Es una lástima que tú no (reciclar) el vidrio. 3. No crees que ellos (querer) usar energía solar. 4.Ojalá todos nosotros
asked by Madi 
Spanish
Fill in the blanks with words from the box. estés molesta plástico recicle sea Es posible que reciclar (1) una de las mejores formas de proteger el medio ambiente. Quizás no te das cuenta (you're not aware), pero reciclar vidrio, aluminio y (2) ahorra
asked by Madi 
Calculus
a piece of wire 12 ft. long is cut into two pieces. one piece is made into a circle and the other piece is made into a square. Let the piece of length x be formed into a circle. allow x to equal 0 or 12, so all the wire is used for the square or for the
asked by Tara 
math
What is the diameter of a barrel that is 3.5 ft tall and holds 11 cubic feet of water
asked by Anonymous 
math
Ben rolls a standard number cube (sides labeled with numbers 1 through 6). Find the probability that Ben rolls a number greater than 2 or an even number.
asked by becca 
Your opinion
in your opinion, what does this quote mean "if things do go right, turn left/go leaft" to you? Or how would you explain this quote to someone?
asked by Anonymous 
Physics
PLEASE ANSWER ASAP!!!!!!!!!!!!!!!!!!!!!!! a cross country runner runs 3km due east, 5km due south and 8km south west. what is the runners final displacement?
asked by Tap 
Grammar
What is the Singular possessive of fern.... and WHY?
asked by Losa 
algebra
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x6y=2 8x+6y=26
asked by Ann 
algebra
Solve using the elimination method. Show your work. If the system has not solution or an infinite number of solutions, state this. 2x8y=42 4x+6y=18
asked by Ann 
Math
find the value of the expression 3*45 divide 92 (106) 4 divide 2
asked by Debbie 
Calculus
Find a unit vector in the direction of v = (1,1). Write your answer as a linear combination of the standard unit vectors i and j. Round each component to the nearest hundredth, if necessary. A 0.71i  0.71j B 0i  0j C 1.41i  1.41j D 1i  1j E 2.83i 
asked by Brock 
Physics
A man (80kg) jumps from a 17 storey balcony (51 metres). How long would it take for him reach the ground? ~Sorry for the morbid example, we were just having a chat about it lol
asked by Timmy 
calculus
In the early 1960s, radioactive strontium90 was released during atmospheric testing of nuclear weapons and got into the bones of people alive at the time. If the halflife of strontium90 is 27 years, what fraction of the strontium90 absorbed in 1962
asked by jessica 
History
Do you think investing in the stock market today would be a better or worse idea than it was in the 1920's? Explain why you think so.
asked by Anonymous 
physics
A moving particle encounters an external electric field that decreases its kinetic energy from 9100 eV to 6630 eV as the particle moves from position A to position B. The electric potential at A is 59.5 V, and the electric potential at B is +26.1 V.
asked by Natasha 
Algebra
Solve the following equation or inequality for the unknown variable. Round answer to two decimal places if necessary. 10 – x < 4
asked by Terrance.H