Tuesday

October 13, 2015
Total # Posts: 850

**PHYSICs**

The drawing shows a 29.7-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces are applied to the crate, and it begins to move. The coefficient of kinetic friction between the crate and the floor is k = 0.324. Determine ...
*February 2, 2011*

**Physicss**

Chapter 4, Problem 40 A 94.9-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of 2.30 m/s^2, (b) moving upward at a constant speed, and (c) accelerating downward with an acceleration of 1...
*February 2, 2011*

**Physics **

A person pushes on a 60-kg refrigerator with a horizontal force of -260 N; the minus sign indicates that the force points in the -x direction. The coefficient of static friction is 0.68. (a) If the refrigerator does not move, what are the magnitude and direction of the static ...
*February 2, 2011*

**Geometry Ms. Sue help please?**

you aren't ms.sue!!!!!
*January 24, 2011*

**statistics**

A manufacturer of computer disks has a historical defective rate of .001. What is the probability that in a batch oof 1000 disks, 2 would be defective?
*January 23, 2011*

**science**

why does the water line flatten out after 0 celsius
*January 21, 2011*

**help math ahhhh**

For questions 9–10, solve each system by elimination. 9. 5x + 4y = 1 3x – 4y = 7 (1 point) (–1, –1) (1, –1) (1, 1) 10. x + 2y = 5 3x + y = 10 (1 point) (3, –1) (1, 3) (3, 1)
*January 20, 2011*

**algebra **

The length of a rectangle is 6 cm more than four times the width. If the perimeter of the rectangle is 42 cm, what are its dimensions? a. length = 18 cm; width = 3 cm b. length = 18 cm; width = 9 cm c. length = 6 cm; width = 9 cm d. length = 3 cm; width = 18 cm
*January 20, 2011*

**algebra **

solve the system of equations using substitution. y = 2x + 5 y = 3x a. (–5, –15) b. (5, 15) c. (–15, –5) d. (1, 3)
*January 20, 2011*

**algebra **

solve the system of equations using substitution. y = x + 10 y = 3x a. (5, 15) b. (2.5, 7.5) c. (–15, –5) d. (–5, –15)
*January 20, 2011*

**algebra **

thanks
*January 20, 2011*

**algebra **

solve the system of equations using substitution. y = 3x – 4 y = 2x – 1 (1 point) a. (–2, –9) b. (1, –1) c. (1, 1) d. (3, 5)
*January 20, 2011*

**algebra **

solve the system of equations using substitution. y = 4x + 2 y = 3x + 6 a. (4, 18) b. (–4, –14) c. (–14, –4) d. (–4, –6)
*January 20, 2011*

**algebra**

Choose the compound inequality that repesents the situation. all real numbers at least –6 and at most 3 –6 >=x >= 3 –6 >=x >= 3 –6 < x < 3 –6 <=x <= 3
*January 20, 2011*

**algebra**

Choose the compound inequality that repesents the situation. all real numbers at least –6 and at most 3 –6 >x > 3 –6 >x > 3 –6 < x < 3 –6 <x < 3
*January 20, 2011*

**bio**

Discuss three types of fossils and how they are formed.
*January 20, 2011*

**bio**

Discuss how the external environment of an organism can affect gene function.
*January 20, 2011*

**Biology**

Compare and contrast the terms aerobic process and anaerobic process.
*January 20, 2011*

**Biology**

Explain the importance of carbon's ability to form covalent bonds in straight chains, branched chains, or rings.
*January 20, 2011*

**Bio**

An electromagnet can be made by wrapping insulated wire around an iron nail and connecting the ends of the wire to a 6-volt battery. HYPOTHESIS: Increasing the number of coils of wire wrapped around the nail increases the strength of the electromagnet, as measured by the ...
*January 20, 2011*

**english**

How does " an occurence at owl creek bridge" a reflection of the period of time?
*January 19, 2011*

**asymptotes and graphing, f**

graph and identify the horizontal asymptote y=7(1/4)x
*January 18, 2011*

**English**

Write 5 sentences about the role of education in successful financial planning, in which you correctly use a different verb tense in each. 1. Education "is very" (simple present tense) important in your critical role for financial success. 2. I'm "trying&...
*January 16, 2011*

**Math**

Suppose you earn $7 per hour The number of hours you work (input) determines your pay (output) i need the inputs and outputs
*December 19, 2010*

**Math**

complete the pattern 3 8 13 18 23 what three numbers come next?
*December 16, 2010*

**prob. statistics**

a survey indicates that 41% of women in the us consider reading as their favorite leisure time activity. you randomly select 4 women and ask them if reading is their favorite leisure time activity. find the probability that exactly 2 of them said yes
*December 13, 2010*

**chemistry**

there is 4.5 grams of acetic acid in 100 ml of water. how many moles of acetic acid is that?
*December 13, 2010*

**child care**

thanks bobpursley ok 6 is not b so i think is a? and 20 if its 25-30% its b?
*December 13, 2010*

**Please check answers/ childcare**

thanks bobpursley ok 6 is not b so i think is a? and 20 if its 25-30% its b?
*December 12, 2010*

**Please check answers/ childcare**

thanks bobpursley ok 6 is not b so i think is a? and 20 if its 25-30% its b?
*December 12, 2010*

**Please check answers/ childcare**

hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his teacher checks to see if ...
*December 12, 2010*

**child care**

hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his teacher checks to see if ...
*December 12, 2010*

**Childcare Manegment /please chech answers**

hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his teacher checks to see if ...
*December 11, 2010*

**can you please check my answers**

1) A strategy for health promotion among infants toddlers and young children focuses on educational programs physical fitness activities and a. family planning b.tobacco,alcohol, and drug use. c.Nutrition. d.mental health & menta disorders. 2)The main goal of effective health...
*December 11, 2010*

**chemistry**

After writing a balanced equation for the reaction between magnesium and hydrochloric acid, calculate the mass of magnesium needed to produce 90ml of hydrogen gas @ STP conditions.
*December 9, 2010*

**General Physic**

The time it takes for an object dropped from the top of cliff A to hit the water in the lake below is twice the time it takes for another object dropped from the top of cliff B to reach the lake. If it takes 2.30 s for the object to fall from cliff A to the water, what are the...
*December 5, 2010*

**english (Frederick Douglass)**

Whatis the most important description of Mr. Gore?
*December 4, 2010*

**english (Frederick Douglass)**

Why do you think Douglass says of the killing of slave Demby ‘in an instant poor Demby was no more. His mangled body sank out of sight, and blood and brains marked the water where he stood.”?
*December 4, 2010*

**sociology**

Im in Illinois and Yes its the same book Chapter 12 pg 365... Im so lost and dont know where to start. From Rasmussen as well. LOL
*December 3, 2010*

**history**

How did the settlement house movement differ from earlier attempts to relieve poverty?
*December 2, 2010*

**history**

in the 1800s
*December 2, 2010*

**history**

How did professionalization meet the needs of the developing American economy In the urban life?
*December 2, 2010*

**childcare**

ok thanks
*November 30, 2010*

**childcare**

its for my homework
*November 30, 2010*

**childcare**

exam 00383001 need help withj 5 questions
*November 30, 2010*

**childcare**

thanks :O)
*November 30, 2010*

**English (Grade 6)**

What is the best website to practice direct and indirect speech, adjectives and verbs for free? Thank you
*November 29, 2010*

**physics**

When a woman runs 140 meters north and then 60 meters west, what is the magnitude of her total displacement?
*November 27, 2010*

**Physics**

How does progress today differ from progress thousands of years ago?
*November 24, 2010*

**MATH **

3 OUT OF EVERY 4 STUDENT HAVE A COMPUTER AT HOME IF THERE ARE80 STUDENTS HOW MANY HAVE COMPUTERS AT HOME
*November 22, 2010*

**MATH **

IN A CLASS 3 OUT OF EVERY 7 STUDENT ARE MALES IF THERE ARE 27 MALES HOW MANY STUDENT ARE IN THE CLASS
*November 22, 2010*

**12th Grade Government**

Why was it important to the Founding Fathers to justify their actions by evoking traditional English rights?
*November 22, 2010*

**12th Grade Government**

_____ believed that there should be no limits to the power of the government once the will of the people was determined.
*November 22, 2010*

**physics**

Suppose I have a spring. I add a mass (m = 1.0 kg) and it is displaced by 15 cm. What is the spring constant k in units of (N/m)?
*November 18, 2010*

**Accounting**

Need help with this bank reconciliation...this is actually for a job and I am forgetting everything about accounting because I am nervous. BANK RECONCILATION ============================================== On Aug 14th, One of our Partner's ( Compuville ) cash book showed a ...
*November 17, 2010*

**algebra**

Use muliplying by 1 to find an expression equivalent to 10/13 with a dominator of 39a Please kindly help. I don't understand what to do. Thanks!
*November 14, 2010*

**math116**

-8x-27=-32 1/5 the solution must be in the form as an integer or simplified fraction. Thank you.
*November 12, 2010*

**PHYSICS ---HELP!**

A patient is to be given a blood transfusion. The blood is to flow through a tube from a raised bottle to a needle inserted in the vein . The inside diameter of the 4.8 cm long needle is 0.48 mm, and the required flow rate is 4.9 cm/3 of blood per minute. How high should the ...
*November 12, 2010*

**physics**

Blood from an animal is placed in a bottle 2.0 m above a 3.4 cm long needle, of inside diameter 0.35 mm, from which it flows at a rate of 2.9 cm^3/min. What is the viscosity of this blood? Assume Pblood}=1.05 * 10^3 kg/m^3.
*November 11, 2010*

**chemistry**

a 5% acetic acid solution contains -----grams of acetic acid per ------
*November 11, 2010*

**College Algebra**

USE MULTIPLICATION PRINCIPLE - X/2 = 8 X=_________ I APPRECIATE THE HELP!
*November 8, 2010*

**math**

complete the order triple 8x-y+z=22, 4x+2y-3z=13, x-3y+2x=-6
*November 7, 2010*

**Alg & Trig 2**

find the sum of 1/2, 2/7x, and 5/x
*November 5, 2010*

**Alg & Trig 2**

find the sum of 1/2, 2/7x, and 5/x
*November 5, 2010*

**intro chem HELp please**

Jizz
*November 5, 2010*

**Chemistry**

Calculate the enthalpy change in kJ when 21.6g of H2S is burned. 2H2S(g) + 3O2(g) --> 2SO2(g) + 2H20(g) Change in H=-1036kJ/mol
*October 31, 2010*

**Business**

Which economic system is the best solution to handling a crisis of epic proportion?
*October 29, 2010*

**Physics Help!!**

Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg*m^3 of radius 120 km and height 4.5 km. Make a crude estimate of the ...
*October 26, 2010*

**science**

Which of the following chemical reactions is written to show that mass is conserved? A H2O to H2+O2 B CH4+202 to CO2+2H2O C Mg+HCI to 3MgCI0+H2 D N2+H2 to NH
*October 26, 2010*

**Physics**

A 3.6 m diameter merry-go-round is rotating freely with an angular velocity of 0.78 rad/s. Its total moment of inertia is 1700 kg m^2. Four people standing on the ground, each of mass 62 kg, suddenly step onto the edge of the merry-go-round. What is the angular velocity of the...
*October 26, 2010*

**English**

Idententify the sentence parts - Whose car did the parking attendant tow yesterday?
*October 25, 2010*

**phsics**

for this you just take the inverse tan of .4 and will get theta.
*October 24, 2010*

**consumer math**

$400.OO
*October 20, 2010*

**Finance**

what is the present value of 1000 paid at the end of each of the next 100 years if the interest rate is 7% per year
*October 17, 2010*

**College Algebra and Trig**

a rancher has 12,000 feet of fence to enclose 5 adjacent pens. determine the outer rectangular dimensions that result the maximum enclosed area.
*October 14, 2010*

**math**

Erica took 2 days to drive 1,020 miles. On the first day she drove 10 hours at an average spped of 62 mile per hour. on the second day, her average spped was 57 miles per hour. approx. how long did she drive on the 2nd day?
*October 11, 2010*

**geometry**

A manufacturer wants to make a rectangular storage box with volume 0.75 cubic meters, length 1.5 meters and width 0.4 meters. What is the height of the box?
*October 11, 2010*

**math**

the coordinates of triangle KLM are K(-2,-5), L(0,1), M(6,-2) What type of triangle is KLM? A) obtuse isosceles B) acute scalene C) right isosceles D) right scalene
*October 11, 2010*

**GEOMETRY**

Alicia is 5ft tall. she casts a shadow that measures 6 1/2 feet long at the same time that a sculpture in the park casts a shadow 12 ft long. which of the following is the approximate height of the sculpture? a) 2.0 miles b) 6.6 miles c) 12 miles d) 15.6 miles
*October 11, 2010*

**Ohlone**

6moles
*October 7, 2010*

**math**

how do you find the function of the domaine
*October 5, 2010*

**Chem.**

Suppose that 55 mL of 0.2 M LiOH and 55 mL of 0.3 M HNO2 are mixed. What is the K for the dominant equilibrium in terms of Ka's, Kb's, Kw etc.?
*October 4, 2010*

**Chemistry**

NH4+ OH-=NH3+H20
*October 4, 2010*

**Chemistry**

NH4+ + OH- NH3 + H2O What is the K for the reaction above in terms of Ka's, Kb's, Kw etc.?
*October 4, 2010*

**Psychology**

What different tools of psychology help us with work and everyday life situations?
*October 3, 2010*

**Chemistry**

Calculate the solubility of LaF3 in grams per liter in the following solutions. The Ksp of LaF3 is 2.01 e-19. (a) pure water (b) 0.051 M KF solution (c) 0.065 M LaCl3 solution
*October 1, 2010*

**physics**

Your groceries are in a bag with paper handles. The handles will tear off if a force greater than 59 N is applied to them. (a) What is the greatest mass of groceries that can be lifted safely with this bag, given that the bag is raised with constant speed? kg (b) What if it is...
*September 30, 2010*

**reading**

see Marjorie's personality as shallow
*September 28, 2010*

**math **

-2(-5+2)-3(3-4)-5
*September 25, 2010*

**math **

on a single day the temperature in alaska dropped from a high of -12 f to a low of -50. what os the difference between the high and low temperatures
*September 25, 2010*

**Chemistry**

3H2(g)+N2(g)=2NH3(g) Suppose the equilibrium constant Kp = 0.003337 for the reaction above. If the equilibrium mixture contains partial pressures H2 = 0.400 atm and N2 = 0.350 atm. What is the equilibrium partial pressure of NH3 in atm?
*September 23, 2010*

**physics**

A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an initial speed of 17 m/s. If the brick is in flight for 2.5 s, how tall is the building?
*September 20, 2010*

**Algebra**

how do you factor 4c^3-500 ?
*September 11, 2010*

**art**

please help me pick a favorite harlem Renaissance name of the picture date/time material used. and used for and symbolism
*September 11, 2010*

** college art **

please help me pick a favorite harlem Renaissance name of the picture date/time material used. and used for and symbolism
*September 11, 2010*

**physics**

A truck covers 40.0 m in 8.60 s while smoothly slowing down to a final velocity of 2.00 m/s. (a) Find the truck's original speed. (b) Find its acceleration.
*September 10, 2010*

**Chemistry**

Some physical properties of water are shown below. freezing point 0.00°C boiling point 100.00°C Kf 1.86°C/m Kb 0.512°C/m A 16.0 g sample of a compound known to contain 3 ion species is dissolved in 100. g of water. The boiling point of the solution is 103.6°...
*September 9, 2010*

**Chemistry**

If you are making 430.0 g of 0.41 m Na2SO3, how many grams of the solute should you use? I got 20 grams, but I don't think this is the right answer.
*September 8, 2010*

**math**

There are about 9ft per yard
*September 6, 2010*