Sunday
November 23, 2014

Posts by Maria


Total # Posts: 1,550

Physics Pre-Ap
014 (part 1 of 2) You drop a stone from a position of rest. How far will it fall vertically in the first 2 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m 015 (part 2 of 2) If you instead toss it horizontally at 2.7 m/s, how far will it fall vertically...
September 21, 2012

physical scienece
Does every moving body possess kinetic energy? Does every stationary body possess potential energy?
September 21, 2012

physical sciencei
ke=1/2 (mass)(velocity) ke=1/2mv^2 ke= 1/2m(10^2-0^2) ke=1/2m(20^2-10^2) ke=1/2m(100) ke=1/2m(400-100) ratio is 300/100 or 3/1
September 19, 2012

chemistry -- radioactive decay
suppose you have a 150 gram sample of radioactive decay god-191 which has a half- life of 3.4 hours. how many grams of gold will ramain after 10hrs ? after 24 hrs? answer : 10 hrs :10/3.4= 2.94 times 150*(1/2)^2.94 = 18.75 grams 24 hrs: 24/3.4 = 7.06 150*(1/2)^7.06= 1.12 right...
September 18, 2012

Chemistry - radioactive decay .
list 2 reason why this isotope of gold- 191 would not be a good substitute for making jewelry?
September 18, 2012

Pre-Ap Algebra 2
if the graph of the equation 3x+by=2 is perpendicular to the graph of 2x-3y=-4 determine the value of b
September 18, 2012

History
I don't have a history book!
September 17, 2012

History
How did Pilgrims live? Who were the Purtains?
September 17, 2012

History
What type of settlement did the Pilgrims build?
September 17, 2012

History
What did the Mayflower passengers create when they wrote "civil body politick"?
September 17, 2012

History
How did the Mayflower Compact create representative government?
September 17, 2012

physics
A passenger on a moving train tosses a coin with an initial velocity of (-2.25 m/s) + 4.68 m/s) (from the point of view of the passenger). The train's velocity relative to the ground is (11.5 m/s). (a) What is the minimum speed of the coin relative to the ground during its...
September 16, 2012

math
1,000,200; 1,000,300 each time add 100
September 16, 2012

US history
Thank you so much!!!!
September 15, 2012

US history
What were the essential elements of the settlement of Jamestown that allowed it to survive?
September 15, 2012

Physical science
If you put a 9th grade student in a bathtub and he foisted with most of his head and upper chest above water, how much water would spill out? Additional Information: Bathtub was full of the brim Student is male, and has a normal male IQ (85) Student weights 80kg Student has a ...
September 15, 2012

Physical science
And yes, would you please explain Thanks
September 15, 2012

Physical science
Will a ship loaded with beach balls weight more, less, or the same, as the ship empty?
September 15, 2012

physical sicence
how fast must a ball be thrown upward to reach a height of 12 m?
September 14, 2012

physical science
The 200.g head of a golf club moves at 40 m/s in a circular ARC of 1.2 m radius. How much force must the player exert on the handle of the club to prevent it from flying out of her hands at the bottom of the swing? Ignore the mass of the club's shaft.
September 14, 2012

Math
What is the rule for: Domain: 1, 3, 5, 7 Range: 1, 2, 3, 4 Thanks!
September 13, 2012

Chemistry --- chemistry ---
what is the difference between an atom and an ion ???
September 13, 2012

history
Which of the following is true of President G. W. Bush? A. He vowed to punish all countries sponsoring terrorism. B. He rejected unilateralism. C. He accepted the United States' role in the International Criminal Court. D. He reluctantly endorsed the Kyoto Protocol.
September 13, 2012

hate school
I don't even care
September 12, 2012

statistics
What are the sample median and the mode for males? The sample mean mark of the 50 male students is 8.30. If the sample mean for the entire sample is 8.42, what is the sample mean for the 75 female students?
September 12, 2012

statistics
What are the sample median and the mode for males? The sample mean mark of the 50 male students is 8.30. If the sample mean for the entire sample is 8.42, what is the sample mean for the 75 female students?
September 12, 2012

chemistry ( chemistry lab)
-'Gasoline engine' what are the waste products form this engine ? what element must gasoline be composed of ? -'fuel cell'what are the waste products from this cell ? what is the fuel used in the fuel cell? MY ANSWERs : - C02 , h20 and heat energy are waste ...
September 10, 2012

chemistry ---chenistry ---
If it is assumed that a candle reacts with O2 ,in the air and the only products are energy , CO2 ,H20 ,what 2 elements must be present int he composition of the candle wax???
September 10, 2012

History
Who were the first sea explorers? Why did they explore the oceans? What resulted from their exploration? What did their exploration teach us about the world? What were the result of columbian Exchange?
September 10, 2012

History Christopher Columbus
Thank you Can please answer my other history question!
September 10, 2012

History Christopher Columbus
How did people first come to the Americas?
September 10, 2012

Math
29 I think... based on the order of operations.
September 10, 2012

physics
A popular entertainment at some carnivals is the blanket toss. (a) If a person is thrown to a maximum height of 26.0 ft above the blanket, how long does she spend in the air? (b) Is the amount of time the person is below a height of 13.0 ft more than, less than, or equal to ...
September 10, 2012

chemistry (lab)
how or where does the hat energy produced by the candle come from ?? help me!
September 10, 2012

History
Ok, thank you for answering my other history question :)
September 9, 2012

History
What are the new understanding of the population of the Americas before Eropian contact?
September 9, 2012

History
Thank you Can you please answer my other history question Please.....!!!!!
September 9, 2012

History
What are three ways in which the Americas might have been populated?
September 9, 2012

History
Thank you so much
September 9, 2012

History
How did geography of North America help or hinder our nation's development?
September 9, 2012

Algebra
If m angle BGC =16x-4 and m angle CGD = 2x+13,Find the value of x so that angle BGD is a right angle.
September 9, 2012

Algebra
If m angle FGE =5x+10, Find the value of x so that line FC is perpendicular to Line AE. Line AE is a striaght line
September 9, 2012

Geometry
Line MN is perpendicular to line NP. Point R is in the interior of the angle MNP. If angle MNR = 5x+12 and angle PNR =6x+23. Find both angle measures
September 9, 2012

Geometry
An angle is 15 less than four times its supplement. Find both angle measures.
September 9, 2012

Geometry
Two angles are complementary. One angle is ten less than three times the other angle. Find the measure of both angles.
September 8, 2012

Geometry
The m angle A is 30 more than twice angle B. If angle A and angle B form a linear pair, find the measure of both angles.
September 8, 2012

Geometry
Line AB is perpendicular to line BC. Point E is in the interior of angle ABC. If angle ABE = 2x+3 and angle EBC = 4x-9, find x. Then find the measure of both angles.
September 8, 2012

chemistry
chemical formulae which ends with ite,ate and ide
September 2, 2012

chemistry
many formulae which ends with ite,ate ide
September 2, 2012

math
ann wrote a three digit number. the digit inthe hendreds place is 4 less than the digit in the ones place. the digit in the tens place is two more than the digit in the ones place.the sum of the three digits is 16. what is the three digit number?
August 27, 2012

math
Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $120 for 3 days and 300 miles, while Mary was charged $210 for 5 days and 600 miles. What does Best Rental charge per day and per mile?
August 27, 2012

chemistry
An electronic balance shows the number 2.705 grams ; which digits is/ are the uncertain digit and which are the significant digit?
August 26, 2012

chemistry
does the number 340 have the same meaning as the number 340.0??
August 26, 2012

physics
How far to the nearest meter can a sprinter running at 9 m/s, travel in the time it takes a rock to fall 65 meters?
August 26, 2012

chemistry
2180 nanometer =?meter
August 24, 2012

chemistry
description of the procedure , step by step ,that was used to find the densities.... help me ...!!!
August 23, 2012

chemistry
Using the idea of atoms write a desciption of the difference between an element with a low density and an element with a hight density ???
August 23, 2012

math
Each year a growing tree adds a new ring to its section some years the ring is thicker than others why do you suppose this happens? Suppose the average thickness of growth rings in the Flintstones national forest is 0.5cm about how old is old Fred a famous tree in the forest ...
August 23, 2012

math
What's the circumference of a bicycle wheel with a 27 inch diameter?
August 23, 2012

Algebra
B. y=-2x+3 because: 2x+4y+2=3y+5 2x+4y-3y+2=3y-3y +5 2x-2x+ y+2=-2x+5 y+2-2=-2x+5-2 y=-2x+3
August 22, 2012

algebra 1
-5x-10=2-(x+4)=>5x-10=2-1(x+4) -5x-10=2-x-4 -5x+x-10=2-x+x-4 -4x-10=2-4 -4x-10+10=2-4+10 -4x=8 =>x=?
August 22, 2012

algebra
(-x-1)(-4x^2-2x+2) = 4x^3+2x^2-2x+4x^2+2x-2 =4x^3+6x^2-2
August 22, 2012

chemistry
water has a density of 1g/cm3 ; if 2 different pieces of the wood are put into water which will float and which will sink ? Wood 'a' has a density of 1.19g cm3 Wood "b" has a density of .67 g/cm3 Explain your answer?
August 19, 2012

social studies
how long does it take from Taipei, Taiwan to Miami,FL?? This is not a homework! i just wanna know it by myself cus my friend is going to visit me dis summer. i can't get the info from google or yah
August 17, 2012

business and finance
Ray Long wants to retire in Arizona when he is 70 years of age. Ray is now 50. He believes he will need $130,000 to retire comfortably. To date, Ray has set aside no retirement money. Assume Ray gets 14% interest compounded semiannually. How much must Ray invest today to meet ...
August 13, 2012

business and finance
Mobilee Oil Company accepted a $10,000, 120-day note, dated March 3, at 8.5% to settle a past due accounts receivable. Mobilee Oil discounted the note to raise cash on May 10 at a discounted rate of 9%. What proceeds did Mobilee Oil receive?
August 13, 2012

business and finance
Mel’s Furniture received an invoice dated September 27 for five bedroom sets at $3,000 each. The invoice indicated a trade discount of 5/8/3. The seller of the furniture prepaid the freight of $200. Terms were 2/10 EOM. Assuming Mel pays on November 2, what amount would ...
August 13, 2012

business and finance
Peter Mabel sold a total of 400 Oatmeal ($1.50) and Wheat ($2) breads during the Labor Day weekend. How many of each did Pete sell if total sales were $700?
August 13, 2012

business and finance
Earl Miller plans to buy a boat for $19,500 with an interest charge of $2,500. Earl figures he can afford a monthly payment of $650. If Earl has to pay 36 equal monthly payments, by how much can he afford the boat per month?
August 13, 2012

business and finance
The property of Al’s garage is worth $300,000. Al has a fire insurance policy of $180,000 that contains an 80% coinsurance clause. What will the insurance company pay on a fire that causes $210,000 damage? If Al met the coinsurance requirement, how much would the ...
August 13, 2012

business and finance
Use this information to calculate the following: Sales returns $ 700 Rent expense 1,288 Sales discounts 950 Depreciation expense 600 Cost of merchandise sold 7,600 Gross sales 20,900 Advertising expense 1,650 Salary expense 2,900 Heat expense 900 A. Net sales B. Gross profit C...
August 13, 2012

history
Please help me with my essay titled energy crisis: then and today...thanks
August 1, 2012

readings in world civilization
Kindly please check my answers. Thanks 1. As expressed in your readings, which of these statements best expresses the crucial paradox of the twentieth century? A. Human life is disregarded as nations seek global security. B. War in the name of liberty leads to tyranny. C. ...
July 26, 2012

SCIENCE
DO YOU THINK ENOGH STEPS HAVE BEEN TAKEN TO REDUCE ERRORS IN MEDICAL ABBREVIATION USAGE?
July 14, 2012

algebra
write in algebraic expressions: a number x increased by three times y
July 9, 2012

math
If I bought a jacket for $280.00 and it was 70% off how much would the jacket be?
July 6, 2012

statistics
The authors state that the heights of women in North America are normally distibuted with a mean of 65.0 and a standard deviation of 3.5 inches. I am 64.5 inches. Using the parameters above, what percent of women in North America are shorter than I am?
July 2, 2012

pre cal
7tan^2(pheta)-2=3
June 28, 2012

offices finances
A. Incorrect because, why would you need an officer sign something they have no concern over. B. Incorrect because, why would you pay money for a lawyer to sign a document. Hint: Collection reminders should be typed as if individually composed for that client. They’re ...
June 28, 2012

Science
1. What are some of the evidence that led Wegener to propose his theory, why it met with hostility and why the theory was revived in the 1950’s?
June 28, 2012

College Chemistry
It worked! Thank you so much :)
June 23, 2012

College Chemistry
What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370 V? Given: A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25degrees C . The initial concentrations of Pb2+ and Cu2+ are 5.30×10−2 M and 1.60 M, ...
June 23, 2012

history of modern china
was the expectation of chinese rulers during the taiping rebellion unrealistic?
June 22, 2012

Science
can anyone please give me an example of a numbered key (classification) for these organisms about their structural features? squirrel,turtle, emu, goldfish and mouse. i need to make three but i need one example... thank you
June 21, 2012

Physics
Never mind, I figured this out.
June 19, 2012

Physics
A solid ball and a hollow ball, each with a mass of 2 kg and radius of 0.1 m, start from rest and roll down a ramp of length 3 m at an incline of 44°. An ice cube of the same mass slides without friction down the same ramp. What is the speed of the ice cube at the bottom ...
June 19, 2012

Physics
Thank you!
June 18, 2012

Physics
A 23-kg boy stands 3 m from the center of a frictionless playground merry-go-round, which has a moment of inertia of 180 kg m2. The boy begins to run in a circular path with a speed of 0.6 m/s relative to the ground. (a) Calculate the angular velocity of the merry-go-round in ...
June 18, 2012

Grammar
Thank you PsyDAG!
June 9, 2012

Grammar
What is the prefix, root and suffix of the word "subscribe"? My Answer: prefix - sub root - scrib suffix - e Can the suffix be a single letter? What about the word "misused"? Please help!? Am I right?
June 9, 2012

Please Answer: Geography
Describe the geography of Southern South America and how this geography influences economic activity? My Answer: Southern South America consists of 3 nations, Paraguay, Uruguay and Argentina. The Rio de la Plata is great river system that consists of 4 rivers that are also the...
June 5, 2012

geometry
The vertices of pentagon LMPQR are at L(4, -2), M(5, -2), P(8, -5), Q(6, -7), R(2, -4). The coordinates of the pentagon after two translations are L'(-5, -1), M'(-4, -1), P'(-1, -4), Q'(-3, -6), R'(-7, -3). How was LMPQR translated to create L'M'P...
June 4, 2012

geography
Taken as a whole, what would you say is the single most pressing problem found in Latin America or South America? What possible solutions can you develop? My Answer: In my opinion, the most pressing problem would have to be the management of poverty. South America is a huge ...
June 4, 2012

Geometry Math
If point M is the center of a sphere with the coordinates (-1,3,2) and point T is a point on the surface of the sphere with the coordinates (0,5,1), what is the radius of the sphere?
June 4, 2012

Geometry Math
Lines y= 2x/3+3&y=5 cut the ring formed by circles (x-3)2+(y-5)2=64 and (x-3)2+(y-5)2=25 into four parts. Find the area of each of the four parts.
June 4, 2012

Math
Find both the circumference area of the circle whose equation is (x-2)2+(y-3)2=64.
June 4, 2012

maths
4 3 - =8 2
May 31, 2012

maths
sorry the question was, show clearly that, 4 3 -- =8 2
May 31, 2012

maths
show clearly that 4 3 ---=8 2 solve the equation 5x2+14x-24=0
May 31, 2012

Math
x + (x + 17) = 45
May 31, 2012

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members