Thursday

January 29, 2015

January 29, 2015

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*

**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*