Monday

May 30, 2016
Total # Posts: 1,005

**Chem**

How many KJ are released when 75.0g of steam at 100 degree C condenses cools to 0 degree C and freezes at 0 degree C? I set it up like this but it is wrong, What am I doing wrong: 75g x 2260J/1g water x 1Kj/1000J =
*September 10, 2011*

**physics**

could you estimate the mass of the entire earth? How? If we cannot direct measure the earth's mass, how was it determined?
*September 7, 2011*

**college algebra**

10 1/2 of what number is 42.
*September 4, 2011*

**college algebra**

suppose you invest $15,000 in two funds paying 11 1/2%and 14% simple interest. the total annual interest is $1950. how much is invested in each fund?
*September 4, 2011*

**college algebra**

solve for C makeup: S=C+RC
*September 4, 2011*

**physics**

occurs when atomic nuclei decay
*September 1, 2011*

**physics**

flow of electrons in a conductor is called what?
*September 1, 2011*

**Mth95**

how do i figure that out by the info given?
*August 22, 2011*

**Mth95**

A canon placed at the top of a 15-foot rise fires a 16 pound ball with a vertical velocity of 172 feet per second. How far from the canon will the ball land? What is the max height of its trajectory?
*August 22, 2011*

**Math **

Find the area of the sector of the disk of radius r=15 ft and with arc length s=13 ft. When I did it it came out to .8666667, is that right or do I have to do 1/(13)(15) to get 1.15384571.
*August 19, 2011*

**health safety & nutrition**

measurements of height and weight provide useful information about: a.intellegience b.overall health status c.adult shape d.development age
*August 18, 2011*

**3rd grade math**

I like math...and in
*August 16, 2011*

**pre school**

Considering storybooks with electronic features, educators believe that: a. they may be more educative than human read-alouds. b. they are not worth the money. c. they attract but do not hold toddlers attens for long. d. reading with a responsive adult is best.
*August 16, 2011*

**phi 103**

appeal to popularity
*July 31, 2011*

**phy. science**

what normally warms up faster when heat is applied?
*July 29, 2011*

**early childhood literacy**

c. they attract but do not hold toddlers attention for long.
*July 21, 2011*

**american government**

the presidents roles such as chief executive and commander in chief :
*July 18, 2011*

**english**

Need to find 30 corrections in this assignment.
*July 11, 2011*

**american government**

It can be said of regulatory commissions that: A.the commissioners pursue independent and impartial policies, regardless of politcal pressure from democrats or republicans in congress. B. unlike presidential appointees in other areas, regulatory heads choose which civil ...
*July 10, 2011*

**american government**

As distinct from the patronage and executive leadership system, the merit system for managing the bureaucracy A. allows the president to appoint top officials of executive agencies,thus making the bureaucracy more responsive to election outcomes. B. provides for a neutral ...
*July 10, 2011*

**american government**

According to James Madison, the source of most interest groups or factions is
*July 9, 2011*

**government**

judicial review is the power of the american courts to
*July 9, 2011*

**home school and community**

Describe three issues related to role confusion that a teacher may feel or may communicate.
*June 10, 2011*

**english**

What is the verb in the following sentence Her outgoing voice mail message sounds professional?
*June 9, 2011*

**physics**

The magnetic field at point 1 is 0.20 T directed north of east. The north component of this field at point 1 is most nearly (in T): -0.129 -0.153 -0.20 -0.035 0 -0.1 0.173
*June 7, 2011*

**biography**

Hi, im susan. I am currently in english honors and have to do a biography on someone i admire. The person i admire most right now is jeffree star. I have never really wrote a biography on someone. And could use some help. I dont know what to include about him and what to say. ...
*June 3, 2011*

**math**

The full question: The charge (in coul.) on an object increases according to q=(2 coul)e^[(o.05/sec)(t)], where t=time in sec. At how many sec. is the object deficient 1.56x10^20 electrons (from neutral)? A 0 B 12.56 C 21.94 D 28 E 42.21 F 50.5
*May 31, 2011*

**math**

its actually a physics question q=(2 coul)[1.56x10^20]^([0.50/sec][t]) t=time in sec.
*May 31, 2011*

**math**

actually the e is a variable with the value 1.56x10^20 So, I have to find X in [1.56x10^20]^(0.50/X)
*May 31, 2011*

**math**

How do i find X in e^(0.50/x) on a scientific calc? do I use LN, and if so, could you pls tell me how I can plug it in?
*May 31, 2011*

**verbs**

what are the verbs in this sentence? He suffered an injury to his knee and this is causing him pain and discomfort.
*May 27, 2011*

**english**

grdg
*May 24, 2011*

**math 117**

A launched rocket has an altitude in meters, given by the polynomial h+vt-4.9^2, h is the height in meters v is the velocity in meters per second and t is the number of seconds for which it takes the rocket to become airborne. If the rocket is launched from the top of a tower ...
*May 16, 2011*

**Chemistry**

What is the heat required in Joules to raise the temperature of 100.0g ice at -20 degrees C to steam at 120 degrees C?
*May 14, 2011*

**Chemistry**

What is the heat in Joules required to raise the temperature of 100g H20 from 288K to 308K?
*May 14, 2011*

**chemistry**

the density of a piece of wood is 0.638 g/cm3. The dimensions of the block of wood are 40.0 cm by 50.0 cm by 25.0 cm. What is the mass of the block of wood? Show all calculations.
*May 10, 2011*

**algebra**

simplify, and plese show me how you did it. I am stumped. 24 divide 1/2 + 5/8 * 6/7 thank you.
*May 9, 2011*

**macroeconomics**

How much of a change in the economy will result if business increase their level of investment by $8 billion and the MPC in the economy is 4/5? If the MPC is 2/3?
*April 27, 2011*

**Physics**

Glass of water has mass of 240g at room temp (25°C). Add 50g of 0°C ice. What final temp after ice is melted. (at equilibrium).
*April 26, 2011*

**math**

The mean time for running a mile is 450 se4conds with a standard deviation of 40 seconds. What time would you need to beat to be in the top 10%?
*April 23, 2011*

**Statistics**

length of time in minutes required to complete exercises is distributed with a mean of 60 minutes and a std. deviation of 8 minutes. what percent will require between 60 and 76 minutes to complete the exercises? what percent of participants will require more than 72 minutes to...
*April 20, 2011*

**Chemistry**

Which of the following statements are true? Fusion reactions result in nuclei with higher Z. To keep a nuclear power plant going, a chain reaction must be maintained. Nuclear fusion produces no long-lived radioactive by-products. The Sun is a nuclear fusion reactor. I tried ...
*April 19, 2011*

**algebra**

One week, you earned $1350. Let x represent your total sales that week. Write an equation that could be used to find x.
*April 16, 2011*

**survey of economics**

How would you compute changes in Microsoft’s volume of output from one year to the next? How would price changes affect your computations?
*March 23, 2011*

**Algebra II**

are you sure 9 and 2 is right??
*March 22, 2011*

**Algebra II**

Can someone please help me with this problem. Given Matrix Y= 2 -7 4 and -1 1 0 Matrix Z= 3 4 1 4 2 -4 Solve for matrix X. X-2Y=3X+Z HELP PLEASE!!!
*March 22, 2011*

**Chemistry**

Approximately how much water should be added to 10.0 mL of 12.0 M HCl so that it has the same pH as .90 M acetic acid(Ka= 1.8 x 10^-5)?
*March 13, 2011*

**Chemistry**

The blank solution used to calibrate the spectrophotometer is 10.0mL of 0.2M Fe(NO3)3 diluted to 25.0mL with 0.1M HNO3. Why is this solution preferred to simply using de-ionized water for the calibration?
*March 12, 2011*

**economics**

What would happen to unit sales and total revenue for this textbook if the publisher reduced its price?
*March 6, 2011*

**Math**

I want to make a fence with a perimeter of 42 feet and an Area of 58 square feet. Label all sides of the fence.
*March 3, 2011*

**finance**

Anne is planning to attend college when she graduates from high school in 7 years from now. She anticipates that she will need $10,000 at the beginning of each college year to pay for tuition and fees, and have some spending money. Anne has made an arrangement with her father ...
*March 1, 2011*

**software**

Sorry can you explain please
*March 1, 2011*

**software**

<?xml version="1.1"?> <reference> <author/>Compton, R.</author> <year>2010</year> <articletitle>SOA explained</articletitle> <journaltitle>Retail Management</journaltitle> <issue>vol. 14 no. 6, June<...
*March 1, 2011*

**hardware**

Hi i'm just stuck on this question. can please someone help me. Three cortrect ones are: A) A 9-bit word represents twice as many code words as an 8-bit word. B) mp4, mpg and bmp are all examples of video file extensions. C) A data rate of 4 gigabits per second means that ...
*March 1, 2011*

**Math **

Suzanne wants to put a fence around her square garden. If the garden covers an area of 64 ft2, how many feet of fencing does she need?
*February 28, 2011*

**math**

thank you
*February 23, 2011*

**math**

I dont understand the rules for adding and subtracting postive and negative ,can you please explain it to me? im having a test
*February 23, 2011*

**6th grade english**

Can you recommend a site where I can get some examples of prepositional prases?
*February 20, 2011*

**sociology**

This assignment is confusing me, is there anyone that can lead me in the right direction? The assignment is as follows. If appointed to head the U.S. Civil Service Commission, what polices would you propose to reduce radical ethnic strife in the U.S. and why? This assignment ...
*February 19, 2011*

**math**

In the trapezoid above, base R is 16 units and base S is 24 units. The trapezoid has a height of 9 units. What is the area of the trapezoid?
*February 17, 2011*

**chemistry**

write the formulas of the complex ion formed between a) the ligand, Cl-, and the platinum(II) ion with a coordination number of four. b) the ligand, NH3, and the nickel(II( ion with a coordination number of six. c)the ligand, ethylenediamine, and the chromium (III) ion with a ...
*February 17, 2011*

**chemistry HELP PLEASE**

write the formulas of the complex ion formed between a) the ligand, Cl-, and the platinum(II) ion with a coordination number of four. b) the ligand, NH3, and the nickel(II( ion with a coordination number of six. c)the ligand, ethylenediamine, and the chromium (III) ion with a ...
*February 17, 2011*

**early childhood literacy**

not arbitrary symbols
*February 16, 2011*

**Algebra**

5/(6 x)-2/3 = 4-2/x
*February 15, 2011*

**math**

The length of a rectangle is 4 times its width. Express the perimeter, P, of the rectangle as a function of the width, w.
*February 15, 2011*

**math**

You flip a coin and toss a 1-6 number cube what is the probabilty of getting a 5 and tails
*February 13, 2011*

**computer science**

In the TCP/IP model, the best path through the network is determined at the ______________ layer. In the OSI model, the same function is carried out at the ______________ layer. A network access network B network access transport C internet network D internet transport E ...
*February 13, 2011*

**computers**

Can please help me, i'm stuck on thios question:- Q) Select the two true statements from the following list. A)In the OSI model, PDUs at layer 2 are called frames and PDUs at layer 3 are called packets. B)In an IPv4 packet header the Time-to-Live field is 8 bits. This ...
*February 10, 2011*

**Math**

50MB file is compressed using a compression ratio of 10. What is the compressed file size?
*February 10, 2011*

**math**

exmple of porportion and ratios in your daily lives.
*February 9, 2011*

**computer science**

can please help me to fill this: In the TCP/IP model, the best path through the network is determined at the ______________ layer. In the OSI model, the same function is carried out at the ______________ layer.
*February 9, 2011*

**algebra**

35+ 6 x < 20 -2
*February 8, 2011*

**Algebra**

35+ 6x <29-2
*February 8, 2011*

**Math**

Can please someone check my answer: a)385 data loss incidents took place b)110 million people were affected by personal data loss incidents c)3% of all data loss incidents were caused by hard copy theft/loss d)20% of all data loss incidents were caused by portable media theft/...
*February 8, 2011*

**4th grade math**

96
*February 7, 2011*

**Computer science**

can you please explain, i didn't get it. Thanks
*February 7, 2011*

**Computer Science**

Can please someone check my answer: a)385 data loss incidents took place b)110 million people were affected by personal data loss incidents c)3% of all data loss incidents were caused by hard copy theft/loss d)20% of all data loss incidents were caused by portable media theft/...
*February 7, 2011*

**Algebra 2**

Walking at 4km/h, Bruce can make the roundtrip between his campsite and Lookout Point in 2.5 h. Rowing on Crooked River, he can row upstream from the campsite to Lookout Point in 1 h and can row back again in 40 min. Find Bruce’s rate of rowing in still water and the ...
*February 6, 2011*

**lab**

i need 200mL of an 8 molar solution of dilute acid, and my stock cconcentrate is 18 molar, how much of the concentrate, and how much water will i need?
*January 31, 2011*

**chemistry help**

the rate constant (k) for a reaction was measured as a function of temperature. A plot of In k versus 1/T (in K ) is linear and has a slope of -1.01 x 10^4 K. Calculate the activation energy for the reaction. i dont know how to solve it???
*January 31, 2011*

**algebra**

If a pizza is 15.00 and the cost is 55.00 labor is 4.00 what is the equation to determine revenue?
*January 26, 2011*

**social studies**

1) how did the fact that fur trading companieswere econimic imperialists affect the development of westerm Canada? 2) how did the arrival of settlers in the West affect the fur trade? 3) describe the role played by Native peoples in the fur trade. 4) describe the role played ...
*January 19, 2011*

**Computer Science**

a)385 data loss incidents took place b)110 million people were affected by personal data loss incidents c)3% of all data loss incidents were caused by hard copy theft/loss d)20% of all data loss incidents were caused by portable media theft/loss e)15% of data loss incidents ...
*January 16, 2011*

**computer science**

What are the differences between VPN and private network?
*January 16, 2011*

**geometry**

this answer is incorrect .
*January 13, 2011*

**Science/language arts**

I need a poem that I need about lithosphere
*January 11, 2011*

**Geometry**

In a triangle labeled ABC with the following coordinates A(-3,2) B (0,4) C (2,-1) What is the image of each vertex? Give answer as an ordered pair.
*January 11, 2011*

**Geometry**

In a triangle labeled ABC with the following coordinates A(-3,2) B (0,4) C (2,-1) What is the image of each vertex? Give answer as an ordered pair.
*January 10, 2011*

**Algebra 2**

One of the the zeros of the functions F(x)= x^4+2x^3-13x^2-38x-24 is x=-3, find the other zeros of the function.
*January 9, 2011*

**geometry**

this answer is incorrect .
*January 6, 2011*

**precal**

are there solutions to x^3+27i=0 is so what are they?
*December 30, 2010*

**precal help**

Find a Parabola with Vertex (3,1) Focus (4,1) Find the vertex of 4y^2+4y-16x+13=0 Find the center of an ellipse 9x^2+4y^2-36x-24y-36=0 Find an ellipse with minor axis of 8 and vertices at (-9,3),(7,3)
*December 30, 2010*

**PRECAL**

answers please btw steps arent necessary
*December 29, 2010*

**PRECAL**

Find a Parabola with Vertex (3,1) Focus (4,1) Find the vertex of 4y^2+4y-16x+13=0 Find the center of an ellipse 9x^2+4y^2-36x-24y-36=0 Find an ellipse with minor axis of 8 and vertices at (-9,3),(7,3)
*December 29, 2010*

**chemistry**

determine the mass of phosphoric acid that can be produced by the reaction of one thousand tons of phosphate rock and sulfuric acid
*December 20, 2010*

**math 116**

Simplify. -2[38-(-56-50)]=
*December 16, 2010*

**physics**

are you sure? because this is a acceleration in two dimensions problems. the answer is supposed to be in the form of ( , )m/s.
*December 15, 2010*

**physics**

help please. thankyou.
*December 15, 2010*

**physics**

An electron starts at rest. Gravity accelerates the electron in the negative y direction at 9.80 m/s2 while an electric field accelerates it in the positive x direction at 3.80×106 m/s2. Find its velocity 2.45 s after it starts to move.
*December 15, 2010*

**physics**

that is indded correct! can you help me on the other question i had too? its right above this post. it is either the electron or cannon question. thanks so much again!
*December 15, 2010*