Tuesday

May 24, 2016
Total # Posts: 3,623

**PHYSICS - PLEASE HELP**

A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?
*November 28, 2012*

**Phy**

A 17kg child slides down a 2.7m -high playground slide. She starts from rest, and her speed at the bottom is 1.8 m/s. What is the change in the thermal energy of the slide and the seat of her pants?
*November 28, 2012*

**probability**

the one that says sum: and ways: that is what the book says!
*November 27, 2012*

**probability**

two fair six-sided dice are rolled and the sum of the dots on the top faces is recorded. a) complete the table, showing the number of ways each sum can occur sum: 1 2 3 4 5 6 7 8 9 10 11 12 ways:1 2 3 b)use the table to find the probability of the following events. A:the sum ...
*November 27, 2012*

**math**

yancey collects plastic banks. He has three different banks: a pig,a cow and a horse. How many ways can Yancey arrange his banks on a shelf?
*November 27, 2012*

**Physics**

Part A: A cardinal (Richmondena cardinalis) of mass 4.50×10^−2 kg and a baseball of mass 0.142 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude p(c) of momentum to the magnitude p(b) of the baseball's momentum? Part B: A man ...
*November 27, 2012*

**Social Studies**

what are the correct answers?
*November 27, 2012*

**chemistry**

Balance the following equations. Show all work. MnO4- + Zn -> Mn2+ + Zn2+
*November 27, 2012*

**Statistic**

In chi square goodness of fit test, if the expected frequencies, and the observed frequencies were quite different, we could conclude that: A) null hypothesis is false, and we would reject B) chi square distribution is invalid, and use t distribution instead C) alternate ...
*November 27, 2012*

**physics**

12. The ratio of the tensile (or compressive) strength to the density of a material is a measure of how strong the material is “pound for pound.” (a) Compare tendon (tensile strength 80.0 MPa, density 1100 kg/m3) with steel (tensile strength 0.50 GPa, density 7700 ...
*November 26, 2012*

**STATISTICS**

Scores on the LSAT are approximately normally distributed. In fact, published reports indicate that approximately 40 percent of all test takers score at or between 145 and 155, and about 70 percent score at or between 140 and 160. The full range of scores is 60 pts (120–...
*November 26, 2012*

**chem**

the max # of grams of K that can be obtained from 100.grams of KHCO3?
*November 24, 2012*

**chemistry**

At what temperature would you expect dinitrogen pentoxide to sublime? N2O5(s)-->N2O5(g) N2O5(s)= DELTA H -43.1 N2O5(s)= S (J*K1-*MOL1-)= 178.2 N2O5(g)= DELTA H 13.3 N2O5(g)= S (J*K1-*MOL1-)=355.7 where do i start here?
*November 24, 2012*

**chemistry**

Balance this chemical equation. Cr2O7 2-(aq) + Cu(s)---> Cr3+(aq) +Cu2+aq) I don't understand how to do this problem. Where do i begin? thank you.
*November 24, 2012*

**Leading Innovation Global Organization**

define and analyze ways in which innovation at HCL Technologies will likely be influenced by trends shaping global markets.
*November 21, 2012*

**Microsoft Infrastructure**

You remember learning that remote RADIUS server groups offer some benefits to a network with multiple RADIUS servers. Research those benefits and decide if making changes to your network is necessary. Describe the findings of your research concerning the benefits of remote ...
*November 21, 2012*

**Algebra**

6/24 of 1/2 would be 3/12
*November 20, 2012*

**history ASAP**

in what sense did the us seem to be developing into two nations in the 1950 and 1960's . What was really happening ? Did it stop ? why?
*November 18, 2012*

**math**

how many lines can connect 3 coplanar points?
*November 18, 2012*

**intermediate accounting**

purchase of a machine for $2000 was expensed. The machine has a four year life , no residual value , and straight line depreciation is used how to write journal entry?
*November 17, 2012*

**intermediate accounting**

goods in transit, purchased on credit and shipped FOB destination. $10000 . were included in purchases but not in the ending inventory? how would you write this journal entry.( this company uses periodic inventory.
*November 17, 2012*

**Math**

A cubic centimeter is the same as 1 mL. If a humpback whale has more than 1 kL of blood, how many cubic centimeters of blood does the humpback have?
*November 16, 2012*

**chemistry**

what is the total pressure in a gas mixture of 100 mm hg O2, 820 mm hg N2, and 1.5 mm hg CO2?
*November 14, 2012*

**chemistry**

what is the total pressure in a gas mixture of 100 mm hg O2, 820 mm hg N2, and 1.5 mm hg CO2?
*November 14, 2012*

**english**

Is this sentence correct? A sheet lied on the rug to catch paint splatters.
*November 14, 2012*

**Business**

I would like you to explain the implications of the article and apply some aspects of the article in a paragraph, like implicating imformation about the article.
*November 13, 2012*

**Business**

Explain, in several paragraphs (no more than four), the implications of the Malcolm Gladwell article, "How David Beats Goliath." Apply some aspects of the article to your experience and future.
*November 13, 2012*

**Chemistry**

How many grams are in 50.0 mL 2.0 M of HCl? Please help me!!! I think the answer is 3.57g but I am not sure. Thank you :)
*November 13, 2012*

**Windows Infrastructure**

You need to download a large document (100 Mb) from your local network. This document contains the blueprints for a multi-million dollar invention and should not fall into the hands of competing companies. Which should you use to download this document: a dial-up connection or...
*November 13, 2012*

**physics**

an arrow was shot at a suspended clay target. the original KE the arrow was shot with was 2.0 J. the final KE from the arrow-target collision was 0.2 J. What happened to the original KE of the arrow? Give at least four possible ways in which this KE could have been lost. I ...
*November 12, 2012*

**Physics B**

A 89.2 kg ice skater, moving at 16.1 m/s, crashes into a stationary skater of equal mass. After the collision, the two skaters move as a unit at 8.05 m/s. Suppose the average force a skater can experience without breaking a bone is 4296 N. If the impact time is 0.096 s, what ...
*November 12, 2012*

**Physics B**

Part 1 Calculate the magnitude of the linear momentum for each of the following cases: A proton with mass 1.67×10 −27 kg moving with a speed of 5.24 × 10 6 m/s. Answer in units of kg · m/s Part 2 A 15.1 g bullet moving with a speed of 327 m/s. Answer ...
*November 12, 2012*

**trig**

(1 + sinx)(secx - tanx) = cos x
*November 11, 2012*

**trig**

tan^2x/1 + tan^2x = sin ^2 x
*November 11, 2012*

**trig**

cos^2 A/ 1+sin A
*November 11, 2012*

**Precalculus**

The question(s) are as follows: Given: f(x) = 3cos(3x+π) - 4 Find: a) the inverse of F(x) b) the domain and range of F(x) c) the domain and range of F -1(x) I got cos-1[(x-4)/9] - π = y for the inverse, although I'm not sure I did the problem right (I set x to y ...
*November 11, 2012*

**algebra**

The basic formula is rate x time = distance. Since the freight train and the passenger train are traveling the same distance, the rate x time for each train equals the other. Let t = the time for the freight train. Then t-2 would equal the time for the passenger train, since ...
*November 11, 2012*

**Precalculus**

The question(s) were as follows: Given: f(x) = 3cos(3x+π) - 4 (as you thought) Find: a) the inverse of F(x) b) the domain and range of F(x) c) the domain and range of F -1(x) I got cos-1[(x-4)/9] - π =y for the inverse, although I'm not sure I did the problem ...
*November 11, 2012*

**Precalculus**

How would I go about finding the domain and range of 3cos(3x+π) = 4? Thanks
*November 11, 2012*

**social studies**

The Demographic Transition Model
*November 11, 2012*

**maths**

find the whole number solutions to each of these inequalities. q1. 3<2x-1≤17 q2. 5≤g-3≤12 q3. 8<5c≤20
*November 11, 2012*

**Sociology**

This unit we learned about the various social statuses in the U.S. Identify and describe each status. How are they similar and how do they differ? Into which social status do you fit and why do you feel this way
*November 9, 2012*

**Economics**

The slope of the consumption function equals: A. 1-MPS B. 1/(1-MPS) C. 1-MPC D. MPC/MPS E. MPS
*November 9, 2012*

**Economics**

Consider the simple economy of Behr, whose government does not tax its citizens. The consumption function of Behr is given by: C=500+.8Y, where Y is income. the autonomous consumer spending in this economy is: A. $1000 B. $800 C. $500 D. $.80 E. $1800
*November 9, 2012*

**Algebra**

What is the rule?? INPUT OUTPUT ______ 12 9 ______ ______ 6 ______ 16 7 _______
*November 7, 2012*

**Physics B**

Objects with masses of 105 kg and 528 kg are separated by 0.482 m. A 41.1 kg mass is placed midway between them. 0.482 m b b 105 kg 41.1 kg 528 kg Find the magnitude of the net gravitational force exerted by the two larger masses on the 41.1 kg mass. The value of the universal...
*November 6, 2012*

**Science **

A 52kg tricyle left a child's yard at 3m/52. What is its force ?
*November 6, 2012*

**geography**

omg thanks i needed help on that one too! still working on the other parts
*November 4, 2012*

**stats**

if you know the mean and standard deviation, how do you determine the proportion that will and will not be included
*November 4, 2012*

**Physics B**

part 1 A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the coordinate system as follows: a 1.5 kg object at the origin, a 3.4 kg object at (0 m,1.8 m), and a 4.5 kg object at (4.2 m,0 m). THANK YOU!! Find the ...
*November 4, 2012*

**Physics B**

A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the coordinate system as follows: a 1.5 kg object at the origin, a 3.4 kg object at (0 m,1.8 m), and a 4.5 kg object at (4.2 m,0 m). Find the resultant gravitational ...
*November 4, 2012*

**Math**

Jane is x years old today. Her brother Kenny is 4 years older. After seven years their total combined age will be 24 years. Write a linear equation for their total combined age after seven years. Fine James age today.
*November 3, 2012*

**Math**

There are 40 questions on a class test. Six points are given for each correct answer and three points are deducted for each wrong answer. Find the number of correct answers for a test score of 105.
*November 3, 2012*

**chemistry**

Calculate the grams of solute needed to prepare each of the following. 55.0 ml of a 6.50 hcl solution.
*November 2, 2012*

**Physics B**

An air puck of mass 0.289 kg is tied to a string and allowed to revolve in a circle of radius 0.51 m on a horizontal, frictionless table. The other end of the string passes through a hole in the center of the table and a mass of 0.98 kg is tied to it. The suspended mass ...
*November 1, 2012*

**Physics**

An air puck of mass 0.289 kg is tied to a string and allowed to revolve in a circle of radius 0.51 m on a horizontal, frictionless table. The other end of the string passes through a hole in the center of the table and a mass of 0.98 kg is tied to it. The suspended mass ...
*November 1, 2012*

**7th grade math ASAP please**

2 is 43:51 4 is 15 packs for 3.95 10 is NO IDEA!!! Sorry for the last question but I hope I was a help on the first 2!!! :D Good luck on your Maths homework!! :D
*October 30, 2012*

**college algebra**

list the intercepts and test for symmetry. y=-8x/x^2=49
*October 28, 2012*

**financial accounting**

The lake theater opened on april 1.all facilities were completed on march 31. During april,the following events and transactions occured. Apr.2 paid film rental of $800 on first movie. 3 ordered two additional films at $1,000 each. 10 made $2,000 payment on mortgage and $1,000...
*October 27, 2012*

**Physical Science**

Sound travels about 1530 m/s in sea water. How many times faster does sound travel in sea water than in air? (The speed of sound in air at 25°C is about 345 m/s.)
*October 24, 2012*

**chemistry **

onic compounds have names that... (choose all that apply) might contain Roman numerals. might start with ammonium. start with the name of an anion. have prefixes, like di or penta. start with the name of a nonmetal.
*October 22, 2012*

**chemistry **

What is the chemical formula of the compound that forms between lithium (Li) and phosphorus (P)?
*October 22, 2012*

**math**

-2a+2=-14 -2a=-16 a=-16/-2 a=8
*October 22, 2012*

**Accounting**

I am given several hypothetical amounts and interest rates and need to find the amount of the rental payments. (Lessee-Lessor Entries; Sales-Type Lease) On January 1, 2011, Palmer Company leased equipment to Woods Corporation. The following information pertains to this lease. ...
*October 22, 2012*

**math**

Tina'goal this month is to earn$10,000.She earns $13,500 in total. What percentage did she meet her goal
*October 21, 2012*

**business**

why might a buyer want to participate in an industry consortium marketplace instead of setting up their own business
*October 18, 2012*

**business**

describe 3 departments that should be included in a small towns web site
*October 18, 2012*

**Physics**

Thank you!
*October 18, 2012*

**Physics**

would the radius be half of the 0.40m?
*October 18, 2012*

**Physics**

correction the velocity is 0.7 m/s
*October 18, 2012*

**Physics**

Determine the tension in a 40 cm long pendulum when a bob of mass 200g moving at 0.7 m.s is 15 degrees from the vertical?
*October 18, 2012*

**math**

how many feet are in 4 yards
*October 17, 2012*

**science**

Is glucose molecules broken down in both hases of respiration?
*October 17, 2012*

**science**

need help with what are the raw materials of respiration and their products?
*October 17, 2012*

**english**

Is the verb intransitive or transitive in this sentence? Jazz began in New Orleans.
*October 17, 2012*

**GEN 105**

• Describe how each practice activity reinforced or contradicted something about yourself
*October 17, 2012*

**Math**

What is the difference between counting the spaces between whole numbers and counting the tick marks?
*October 16, 2012*

**Statistics**

If you roll two dice what is the probablity of getting one 2? I think the answer is 1/6 but I'm not sure
*October 13, 2012*

**chem**

Yes, your states of matter are wrong. Since they are aqueous solutions, hydrogen and hydroxide should be written as (aq) not (g) since niether are gases.
*October 13, 2012*

**physics**

what device could use th earth's magnetic felds to produce energy and how it would work?
*October 12, 2012*

**Math**

a) Find the product (1/2x2+y2) x-y b) Simplyfy 5/3a2b x (-3/4ab3) x (-4/5a2b2) and find the value for 2= -2 and b= 1. c) Divide x (5x2 - 80 by 5x (x+4). Thanks in anticipation.
*October 8, 2012*

**Math**

what is the written form of .6045?
*October 5, 2012*

**MATH**

DIVIDE 64 BUNDLES OF NEWSPAPERS INTO TWO GROUPS SO THE RATIO IS 3 TO 5
*September 30, 2012*

**algebra**

Thank you
*September 26, 2012*

**algebra**

making linear equation from word problem At low altitudes, the altitude of a parachute and time in the air are linearly related. A jump at 2,880 ft use the US army T-10 parachute system last 120 sec. (A) find a linear model relating altitude a (in feet) and time in the air t (...
*September 26, 2012*

**algebra**

Thank you so much
*September 26, 2012*

**algebra**

making linear equation from word problem An airspeed indicator on aircraft is affected by changes in atmospheric pressure at different altitudes. A pilot can estimate the true airspeed by observing the indicated airspeed and adding it about 2% for every 1,000 feet of altitude...
*September 26, 2012*

**algerbra**

24+61+b+3a+b+3d How do you do this?!
*September 24, 2012*

**culral anthropology**

in anthropology the term culture referes to what
*September 23, 2012*

**analytical chemisty**

Calculate the pH and pOH of a 0.00002M solution of acetic acid.
*September 23, 2012*

**chemistry**

so 1508=18.36*26.37*x?
*September 23, 2012*

**chemistry**

A metal ring with a mass of 18.36 g undergoes a change in temperature of 26.37 oC. The energy change, or heat, required for this change in temperature is 1508 Joules. What is the specific heat of the ring?
*September 23, 2012*

**Trig**

A cylindrical tank, 6 foot in radius, lies on it's side parallel and against the side of a warehouse. A ladder leans against the building, passes over and just touches the tank, and has a slope of -3/4. Find the equation of the ladder and the length of the ladder
*September 23, 2012*

**science 7 grade**

You place 75 mL sea wter in a graduated cylinder with a mass of 55 grams mass of sea water and cylinder together is 140 grams what is the density of the sea water g/mL
*September 23, 2012*

**Math**

I have The Exact same problem I'm trying to Get all my missing work (the homework i dident do) Into the teacher and if your test grades are really low like mine you should probably get tutoring or ask a kid in the class to help you out But since progress reports are coming...
*September 20, 2012*

**math**

A jumbo jet carries 150 passengers, 30 in first class and the remainder in coach. If the average first class ticket is $550 and the average coach ticked is $150, how much will the airplane gross if the plane is full?
*September 20, 2012*

**GEOMETRY**

What is the distance between points (3, 1) and (0, –5)? Round to the nearest tenth.
*September 19, 2012*

**geometry**

Naomi draws a portion of a figure as shown. She wants to construct a line segment through R that makes the same angle with as .
*September 19, 2012*

**Biology/Biotany**

the rise of water in plants is presently most satisfactorily explained by which element: magnesium, sulphur, calcium, phosphorus, or manganese?
*September 16, 2012*