Friday
December 19, 2014

Posts by sasha


Total # Posts: 337

Physics
A pond is 12 metres across. The crests of two successive waves are 60.0 cm apart and they each move across the pond in 15 seconds. a)What is the velocity of the waves? b)What is the frequency of the waves? c)What is the period of the waves?
November 23, 2014

chemistry
What is w when 3.37 kg of H2O(l), initially at 25.0oC, is converted into water vapour at 111oC against a constant external pressure of 1.00 atm? Assume that the vapour behaves ideally and that the density of liquid water is 1.00 g/mL. (Remember to include a "+" or &...
November 3, 2014

chemistry
The enthalpy change for the reaction below at 25oC is -2,252 kJ (per mole of C11H24). What is the internal energy change for the reaction at 25oC? 11 CO(g) + 23 H2(g) --> C11H24(l) + 11 H2O(l)
November 3, 2014

chemistry
A 0.009298-mol sample of an organic compound was burned in oxygen in a bomb calorimeter. The temperature of the calorimeter increased from 23.7oC to 27.1oC. If the heat capacity of the calorimeter is 4.84 kJ (oC)-1, then what is the constant volume heat of combustion of this ...
November 3, 2014

PHYSICS
Use dimensional analysis to determine the pressure, P, in the pipe to within a dimen- sionless multiplicative constant of order 1.(Hint: P may depend on another physical variable besides A and R.) Using your result from part (a), reexpress your answer in a form that involves v...
September 21, 2014

physics
Use the formula F=kQ1Q2/r^2. Q1+Q2=200*10^-6 C 200*10^-6 C - Q1=Q2 substitute Q2 into the top formula and solve the equation.
September 1, 2014

Physics-half way fin.
A person was shot vertically upward from a cannon with a mass 52 kg and a speed of 35 m/s. a) what was the height according to conservation of energy and b) what was the person's total energy? (TME never changes!) a) used TMEo=TMEf height= 63 m. b.)Would I use PE=mgh
June 21, 2014

Physics-check plz
If a pitcher throws a fast ball with a speed of 35 m/s. The ball has a mass of 220 grams. a) how much work was done in throwing the ball? b) If the catcher catches the ball by moving his mitt 15 cm. backward what force did he exert? a.) Throwing the ball in a positive ...
June 20, 2014

AlgebraII( Probability)
1)a number less than 35 is chosen. 2)A prime number is chosen. 3) A multiple of 4 is chosen. 4)A perfect cube is chosen. Please help me.
April 27, 2014

Electricity
Refrigerators requires a lot of electricity and uses the most electrical energy in most households. Why do refrigerators require so much energy to be operated?
April 8, 2014

Personal Dimensions of Education
THE ANSWER IS "IS"
February 16, 2014

Math
Grace painted 1/3 of the wall. Sarah painted 2/5 of the wall. How much of the wall have grace and sarah painted ?
January 23, 2014

Algebra 2
Ans: a. the matrix will have the same signs of the coefficients of the equations.
January 9, 2014

arithmetic sequences
the initial game costs 50 cents. ANS= 50 + 25x = 50 + 25(9) = $2.75
January 9, 2014

physical science
45mph*5280ft/mi*1m/3.2808ft*1hr/3600s speed limit= 20.12 m/s the speed limit is less than the speed of the car. yes, the car exceeded the speed limit.
January 9, 2014

math
24
January 9, 2014

Anyone please help(math)
Question 1: ANS: a. 7 Question 2: ANS: a. 4 Question 3: ANS: d. 3
January 9, 2014

Early Childhood Education
b. fit into natural daily routines.
November 16, 2013

Early Childhood Education
When designing IFSP objectives, its useful to parents to think of skills that a. are short and easy. b. fit into natural daily routines. c. are most useful in promoting ambulation. d. are taught in isolation to maximize chances of progress.
November 16, 2013

math
1. The world population in 1992 is 5.42 billion. If its population doubled every a. 41 years, what would its population be in 41 years? b. 41 years, what would its population be in 82 years? c. 82 years, what would its population be in 164 years?
November 12, 2013

math
i got that but i was not sure about b)b. How long do you have before you must act or have your pond covered with the plants?
November 12, 2013

math
The area covered by water lilies in a pond you own doubles in size every day. If allowed to grow the plants would cover the entire pond surface in 30 days. You had decided to do nothing until the pond is ½ covered. a. On what day will the pond be ½ covered? b. ...
November 12, 2013

english-satire
so i am doing a satirical essay , similar to that of swift's modest proposal.I want to talk about obesity, and i have an idea of showing it in a positive way, as in some nations in the past and present being chubby/fat is seen as prosperity and success.What kind of ...
October 29, 2013

sciencee!
What natural zone are each of these cities or areas in? Los Angeles, Palm Springs, Santa Monica Mountains, Catalina, San Francisco, Yosemite --choices are-sierra transitional zone, humid transitional zone,upper sonoran, lower snoran, redwood belt, grasslands,and mountains
October 20, 2013

science.please help!
Would you expect to find the humid transitional zones on the coast or inland? Northern or Southern part of California?
October 20, 2013

Environmental Science
Would you expect to find the humid transitional zones on the coast or inland? Northern or Southern part of California?
October 20, 2013

Physical Science
36.5 lbs
October 15, 2013

Physical science
Vf=Vi+gt Vf= final velocity (what we're solving for) Vi= initial velocity (in our problem, initial velocity is zero because the rock starts from rest) g=gravitational acceleration (9.8m/s/s) t= time (in our case, 3.5s) Vf= 0m/s + (9.8m/s/s)(3.5s) Vf= 34.3m/s downward (you ...
October 8, 2013

Early Childhood Education
Which of the following should not account for rapid gain in overall brain size after birth. a. number of neurons b.swelling due to rapid muscle growth c. The growth of dendrite trees d. myelinization I chose answer a.
September 21, 2013

Early Childhood Education
A needs and services plan is a. written by a pediatrician b. only for infants and toddlers with special needs c.a plan discussed by parents and caregivers upon entry into an infant-toddler program d. a formal plan to serve children that is made by the program and a regulating ...
September 21, 2013

chemistry
A 20.9 g sample of nitrogen gas combines completely with 4.5 g of hydrogen gas to form ammonia. What is the mass of ammonia formed? A 12.7 g sample of X combines with a 24.4 g sample of Y to form the compound XY2. What is the mass of the reactants?
September 15, 2013

math
thank you so much steve
August 25, 2013

math
K is the midpoint of JL JL=4x-2 and JK=7. find x, KL, and JL. Very confused , can you please show steps to working out the problem
August 25, 2013

algebra 2
A rubber ball is thrown 20 feet into the air. If it rebounds 3/5 of the height, how far will it have traveled after the fifth bounce?
May 10, 2013

CONFUSING QUESTION PLEASE HELP
SN
May 9, 2013

Spanish
1: él está jugando a las cartas. 2: Mis amigos juegan fútbol. 3: Tienen prisa 4:Toco la guitara
May 9, 2013

Science
How a lack of nutrients in the soil can affect plant growth?
May 6, 2013

Science
No, liquid manure.
May 6, 2013

calculus
find the derivative of the following: 3x^2 ln(2x) e^2x ln√x+3 please try and show few steps and laws of logarithmics.
April 13, 2013

Biology
Consider this pathway: signaling ligand ¨ G protein-coupled receptor ¨ G protein ¨ adenylyl cyclase ¨ cAMP. Identify the second messenger. Answer: A)G protein B)GTP C)adenylyl cyclase D)cAMP
April 12, 2013

Calculus
Use the Evaluation Theorem to find the exact value of the integral ç^6 2 2x+1dx 1) What is the antiderivative? 2)What is theupper and lower limit? 3) Give final answer.
April 12, 2013

Algebra
Mickey went to Donald Dee's to buy 75 milkshakes for his party. Each milkshake cost the same integer amount of cents. In total, Mickey spent at least $124.00 on milkshakes. What is the smallest possible cost (in cents) of a milkshake?
April 11, 2013

Algebra
Raj and Vikram are two travelers in ancient India, walking along the Silk road. On the first day of travel, Raj travels 5 yojanas, and on each successive day travels 3 yojanas more than the previous day. Vikram started at the same place and travels the same path, but started 5...
April 11, 2013

calculus optimization problem
by cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an open box may be made. if the cardboard is 30 inches long and 14 inches wide find the dimensions of the box that will yield the maximum volume.
April 3, 2013

calculus
4x√(2x^2 + 2x - 1). find first derivative
March 31, 2013

calculus
find the first derivative: 4xsqrt2x^2+2x-1.
March 31, 2013

us history
How much did Coney Island pay to have the escalator?
March 25, 2013

Math
I have 5 friends. I bought three pizzas (all the same size). One was divided into 4 equal parts, the 2nd was divided into 6 equal parts and the 3rd pizza was divided into 8 equal parts. Is there any way I can show how to share these pieces so that each of of us gets the same ...
March 12, 2013

Math
In American roulette where there are 38 numbers, how many possible outcomes can you have if you bet on an odd number?
March 3, 2013

physical
what are the limitations on practical interstellar travel for both manned and unmanned craft and what are some proposed ways to deal with them in the future?
February 26, 2013

Computers
Name three problems that can arise when data becomes mixed up.
February 17, 2013

I.T
How can you protect your computer from fires, dust extreme temperature and power surges?
February 10, 2013

Science
Explanation of the digestion of protein in the human body.
February 8, 2013

Statistics
The intermediate answers from some calculations based on whole number scores are X=4.3467892 and Y=3.3333. We now want to find X(2)+Y(2). After rounding, what values of X and Y do we use?
January 14, 2013

midterm review scavenger hunt funsheet
water moves in bursts
January 13, 2013

statistic
A survey of drivers in the United States found that 15% never use a cell phone while driving. Suppose that drivers arrive at random at an auto inspection station. a. If the inspector checks 10 drivers, what is the probability that at least one driver never uses a cell phone ...
January 5, 2013

math using rule 78
a loan for $400 is to be paid off in 66 months witha payment of $11.62 The borrowee pays it off in 18 months use rule 78 to find the interest saved
December 16, 2012

Mathematics
The correct answer is 48 parts.xD
November 21, 2012

math
If a business borrows $15,000 and repays $20,700 in 4 years, what is the simple interest rate?
November 11, 2012

intrest rates
If the principal P = $500, the interest I = $100, and the rate r = 10%, find the following. (a) What is the time? years (b) What is the future value?
November 11, 2012

Social Studies
Ms Sue I am not getting on to the website.
November 8, 2012

Social Studies
What are some importance and reasons for monuments and forts in guyana?
November 8, 2012

college math
A $8700 personal loan at 5.5% compounded monthly is to be repaid over a 4 year term by equal monthly payments. a) calculate the interest and principle component of the 18th payment b) how much interest will be paid in the third year of the loan?
November 3, 2012

college math
A $8700 personal loan at 5.5% compounded monthly is to be repaid over a 4 year term by equal monthly payments. a) calculate the interest and principle component of the 18th payment b) how much interest will be paid in the third year of the loan?
November 2, 2012

college math
a math student borrowed $9300.00 from his local bank at 7% compounded quarterly to pay for his studies. the loan is to be repaid by equal payments at the end of every quarter over a two year term. a)construct the amortization schedule for the loan. b)calculate the total interest.
October 31, 2012

Math
Thanks Jennifer!!!!!
October 30, 2012

Math
[2a + 3b] [2a - 3b. May you please explain the steps if you can.
October 30, 2012

Science
Name one feed and feeding system in pig rearing.
October 24, 2012

Computers
What are some computer work related disorders?
October 23, 2012

math
yeah
October 4, 2012

PHI 103
construct an argument that supports Mary's decision to steal the food or an argument that shows why Mary should not steal the food.
October 1, 2012

Chemistry
COmbination of nahco3andhcl what is before,after,mixture, and change?
August 9, 2012

English
Thank you Brooke!!!!
July 23, 2012

English
Thanks alot Ms. Sue thanks!!!!
July 23, 2012

English
Give a definition of an uncountable and a countable nouns and examples PLEASE and THANK YOU!
July 23, 2012

English
Thank YOU Ms. Sue
July 23, 2012

Geography
Is everything else ok?
June 4, 2012

Geography
Oh! sorry I was typing fast.....I didn't notice. I'll change it to continent. Thanks :)
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

Math-find roots
1.One root of each equation below is the same for both equations. what is this root? a.3x^4 + 14x^3 + 8x^2=0 b.18x^4 - 50x^2=0 2. Find the other roots of each equation in question 1
May 30, 2012

History
What were the special characteristics of the population of Virginia in the seventeenth century and what accounted for them?
May 22, 2012

cultual studies
Analyze and interpret the following quotation: “Worldwide, non-Western cultures faced fundamental challenges to their cultural identities—not so much a recentering of culture but a decentering of culture” (Sayre, 2010, p.419).
May 20, 2012

factoring math
factor -16sin^2a+81
May 12, 2012

Social Studies
List 2 reasons why people abuse cocaine. Explain 2 consequences of abusing cocaine.
May 5, 2012

math
Ten different numbers are ordered from least to greatest. The median of the numbers is 12. Three additional numbers are added to the group: 8, 15, and 16. What is the resulting effect on the median?
May 2, 2012

Science
What are 2 disadvantages and advantages of a free range or extensive system?
May 1, 2012

Math
write 225% as a decimal?
April 30, 2012

Social Studies
How can minerals as a resource be utilized to contribute to economic development?
April 21, 2012

math
Reading readiness of preschoolers from an impoverished neighborhood (n=20) was measured using a standardized test. Nationally, the mean on this test for preschoolers is 30.9 with SD=2.08. A) Children below the 30th percentile (in the bottom 30%) are in need of special ...
April 12, 2012

Fluids
A pipe of constant diameter d = 10.5 cm carries water up a hill h = 38.1 m high. How much pressure is required at the bottom of the hill if the water is to reach the top? Any help would be great
March 9, 2012

Re post water in tanks problem
Nope, still wrong :(
March 5, 2012

Re post water in tanks problem
you mean tank b?
March 5, 2012

Re post water in tanks problem
A./_\ B.\_/ C.|_| The three tanks shown above are filled with water to an equal depth. All the tanks have an equal height. Tank A has the greatest surface area at the bottom, tank B the least and tank C the middle. (Select T-True, F-False, G-Greater than, L-Less than, E-Equal ...
March 5, 2012

Physics
TFLEE I've looked at a few examples like this but I can't seem to get it.
March 4, 2012

Physics
A./_\ B.\_/ C.|_| The three tanks shown above are filled with water to an equal depth. All the tanks have an equal height. Tank A has the greatest surface area at the bottom, tank B the least and tank C the middle. (Select T-True, F-False, G-Greater than, L-Less than, E-Equal ...
March 4, 2012

Social-Studies
What is the sustainable use of resources?
February 28, 2012

Science
State the two broad classes of wood and describe them.
February 27, 2012

algebra
(48x^6)/(48x^6/12x^2-12y^2)/(4x^5)/(3xy+3y^2)
February 24, 2012

Music
List the elements of music.
February 11, 2012

Art
Give 4 examples of graphic designs.
February 11, 2012

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