Tuesday

February 28, 2017
Total # Posts: 3,797

**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*

**science**

An airplane flies due north at 235 km/h relative to the air. There is a wind blowing at 65 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?

*September 16, 2012*

**algebra**

t= ((square root of x)/4) + (x/1100), t=14, solve for x

*September 15, 2012*

**algebra**

algebra with pizzazz!In music,what does allegro means?

*September 13, 2012*

**Health**

What is bone strengthening? A. Activities that produce a force on the bones that promote bone growth and strength B. Activities that produce greater elasticity of joints C. Activities that heal injuries and diseases associated with the bones D. None of the above I need help ...

*September 13, 2012*

**i don't understand this math**

It is A for number 4 I just had to quiz, I got 75 but I wanted 100...

*September 12, 2012*

**computer**

assuming a disk should never get 85% full and assuming you were generating 200MB of new data per week, at what point would you need to add another hard disk?

*September 12, 2012*

**Math**

Thanks, Steve! They are stand alone questions, so I'll ask my teacher what he means.

*September 11, 2012*

**Math**

Unit circle.... ugh. Probably have to make estimates, if I'm not to use a calculator.

*September 11, 2012*

**Math**

Well, now I'm just over thinking things...

*September 11, 2012*

**Math**

Actually it probably has something to do with trig identities...

*September 11, 2012*

**Math**

Correction, I should have said convert it to radians using a calculator or convert to radians using this conversion thingy: pi/180 degrees

*September 11, 2012*

**Math**

An other question states: "Solve: sin(35)" Again, same idea, how should I take this question? Should I just convert it into radians or should I just enter it into a calculator? The way they word these review questions are confusing to me. They should really be more ...

*September 11, 2012*

**Math**

Hello, I'm doing a review sheet for math and a certain question states: "solve: ln(3/4)" What should I take solve to mean? Do I just change it's form to ln(3/4) = ln3 - ln 4 ? Or, perhaps, I need to actually enter in the value into a calculator. How would you...

*September 11, 2012*

**windows 7**

asssuming a disk should never get 85% full & assuming you were generating 200 MB per week of new data, at what point would you need to add another hard disk?

*September 11, 2012*

**Science**

What would be a good sentence to describe Prime Meridian to a fourth grader?

*September 10, 2012*

**chem(molarity)**

a buffer contains 0.010 mol of lactic acid and 0.050 mol of sodium lactate per liter . How do I find the molarity of the acid and base?

*September 9, 2012*

**childcare**

A child throws a ball with speed and accuracy when he throws a ball to his teacher but his throws are slower and less accurate when plays with a group of friends. This difference is explained by A. classical stage theory B. probility theory C. locomotion-x theory D. Piaget`s ...

*September 8, 2012*

**Theory to Practice**

What fundamental motor patterns do girls tend to have than boys? a. throwing and kicking b. hopping and skipping d. running and jumping

*September 8, 2012*

**Theory to Practice**

Which of the following is an obstacle to learning for a beginning learner? A.Knowledge of what elements of the movement to focus on B. Chronic indifference characteristic between birth and age three C. Shorter time to monitor perceptual input from the visual system D, ...

*September 7, 2012*

**algebra**

answer to 6r-6-3=15

*September 6, 2012*

**social studies(femist)**

Why do some women feel uncomfortable calling themselves feminist?

*September 6, 2012*

**math**

How did you get 237,853.?

*September 6, 2012*

**Human Services**

where can I find examples for these questions? How has the way in which nonprofit organizations acquire funding changed over recent years? What implications do you see this having on the organization you have analyzed above? Consider who is giving to organizations and the ...

*September 5, 2012*

**Elementary Statistics**

Heights of women have a bell-shaped distribution with a mean of 161 cm and a standard deviation of 7 cm. Using Chebyshev’s theorem, what do we know about the percentage of women with heights that are within 2 standard deviations of the mean? What are the minimum and ...

*September 4, 2012*

**math**

A man buys 3 items for $100. Each item is 50% less than the first. Total of all 3 has to be $100. Is this possible?

*September 3, 2012*

**Financial accounting 2**

If a building cost $600,000, has an estimated residual value of $240,000, has an estimated life of 36 years, and is depreciated by the straight-line method: a) What is the annual depreciation? b) what is the book value at the end of the 20th year?

*September 3, 2012*

**math**

Write the first six terms of each of the sequences whose nth term is a)(-3)n { ____, ____, ____, ____ , ____, ____ } b)3 – 4n { ____, ____, ____, ____ , ____, ____ }

*September 1, 2012*

**math**

how many dimes equal the same total amount as 1,000,000,000 pennies?

*August 30, 2012*

**math**

explain how you know the 6 in 364,021 is NOT in the thousands place.

*August 28, 2012*

**physics**

why it is easier to tear a paper off a full roll than a mostly used one? Is it because of Newton's law?

*August 26, 2012*

**math**

Identify the property of integers being illustrated in each of the following: johmmy a. (-2)(3)€ I b. (-4)0=0 c. -2(3+4)= -2(3)+(-2)4 d. (-2)3=3(-2)

*August 24, 2012*