Wednesday

January 18, 2017
Total # Posts: 846

**physics**

An ice hockey puck slides along the ice at 12m/s. A hockey stick delivers an impulse of 4.0kg*m/s causing the puck to move off in the opposite direction with the same speed. What is mass of puck?

*October 17, 2010*

**Physics**

Weight is a force, and as described by Newton's Second Law, F=ma, where m=mass and a=acceleration. At sea level on Earth, the acceleration is 9.81m/s down, which is the pull of gravity. By taking the object up to the top of a high mountain, it will be less affected by the ...

*October 13, 2010*

**6th grade**

I need to know what is the answer to this __ is a set of beliefs, values, and practicest that a group of people share.

*October 8, 2010*

**Algebra 1**

25% of what is 28?

*October 7, 2010*

**geometry**

A, B, and C are collinear, AB = 5x - 19, and BC = 3x + 4. Find an expression for AC if B is between A and C.

*October 4, 2010*

**6th grade**

WHAT IS THE GREENHOUSE EFFECT???

*October 3, 2010*

**business**

C.

*September 28, 2010*

**sociology**

does diamond hurt the enviroment and do we choose profit over ou enviroment when it comesto diaond mining.

*September 14, 2010*

**home economics**

how are patterns applied to fabric?

*September 7, 2010*

**chemistry**

A hydrogen Atom makes a transition between two energy states and emits a photon with a wavelength of 434.2nm. What is the frequency? Does anyone know how to do this?

*September 3, 2010*

**physics**

Speed is a general answer, velocity is what you're looking for

*August 13, 2010*

**Calculus II**

Determine whether the sequence converges or diverges. If it converges, find the limit. An=((-2)^n)/n!

*July 29, 2010*

**physics**

a. f=(G*m1*m2)/r^2 =(6.67x10^-11*.7*70000)/2.1^2) =7.4*10^-7 N b. f=(G*m1*m2)/r^2 =(6.67*10^-11*.7*70000)/1^2 =3.29*10^-6

*July 16, 2010*

**Physics 121 HW**

0.283

*July 14, 2010*

**3rd grade math**

name one interesting thing you learned aboutyour new techer

*June 6, 2010*

**Science-8th**

How do balance the equation:C5H12 + O2---> CO2 + H2O

*June 5, 2010*

**physics**

An electric iron has a resistance of ohms. How much heat energy is produced in 10 minutes if the current passing through the device is 10 amps?

*May 16, 2010*

**math**

How does a 4th grader draw a picture to support this answer?

*May 13, 2010*

**6th grade science (physics)**

explain and describe Law of Universal Gravitation in relation to force, mass and distance

*April 18, 2010*

**oscillation**

An object with mass 0.250 kg is acted on by an elastic restoring force with force constant 10.8 N/m. The object is set into oscillation with an initial potential energy of 0.150 J and an initial kinetic energy of 6.00×10−2 J. What is the amplitude of oscillation? ...

*April 15, 2010*

**Calculate the oscillation frequency f of the H2 mo**

When displaced from equilibrium by a small amount, the two hydrogen atoms in an \rm H_{2} molecule are acted on by a restoring force F_{x}=-k_1 x with k_1 = 510 N/m. Calculate the oscillation frequency f of the H2 molecule. Use m_eff = m/2 as the "effective mass" of ...

*April 15, 2010*

**Physics**

How do you find the phase constant of the oscillation on a graph.

*April 15, 2010*

**Pre Calculus**

Establish the following identity tan(x+pi/4)=1+tanx/1-tanx

*April 15, 2010*

**Pre Calculus**

Establish the following identity sin 2x/sinx - cos2x/cosx = secx

*April 15, 2010*

**Pre Calculus**

Establish the following identity Sin2x/1+cos2x=tanx

*April 15, 2010*

**math**

Suppose 100 dots are arranged in a square 10 × 10 array, and each dot is colored red or blue. (a) Prove that this array must contain a “monochromatic” rectangle. That is, no matter how the red and blue colors are assigned, there must be either a set of four red...

*April 15, 2010*

**Science**

what are ways plants can conserve water

*March 30, 2010*

**4gr math**

12*12

*March 18, 2010*

**algebra**

what is 3y(7y - 6) + 16y simplified

*March 16, 2010*

**algerbra**

f(X)=(x+1)2 that squared

*March 13, 2010*

**phsycis**

First you need to calculate the PE needed to make the climb. U=mgh U=(62*(2600-3700)*9.8) This value is energy or work denoted as a Joule. A Watt= Joule/Seconds So simply take your joules and divide it by the time the trip took. Convert your 5hr to seconds so... W=(62*(2600-...

*March 2, 2010*

**Chemistry**

What mass of CO2 could be absorbed by 1.34 g of CaO?

*February 28, 2010*

**PHYSICS**

A concert loudspeaker suspended high off the ground emits 35 W of sound power. A small microphone with a 1.0 cm2 area is 50 m from the speaker. (a) What is the sound intensity at the position of the microphone? (b) How much sound energy impinges on the microphone each second?

*February 25, 2010*

**Trigonometry**

1) Find the coordinates of the point (-1,3) after the transformation T (to the -3,2 power) 2) What are the coordinates of point (-3,4) under D (to the 3rd power)? 3) Which of the following transformations could map the point (1,2) onto the point (3,6)? a)T (to the 2,3 power) b...

*February 24, 2010*

**Trigonometry**

1) If P'(2,-6) is the image of point P after the dilation D(to the 2nd power), what are the coordinates of point P? 2) A transformation maps (x,y) onto (x+2, y-1). Find the coordinates of A', the image of point A(-2,6) under the same transformation.

*February 24, 2010*

**Trigonometry**

A translation maps (-6,2) onto (-4,-2). Find the image of (3,5) under the same translation.

*February 24, 2010*

**spanish**

1.¿Va a viajar a Perú tu primo Andrés?

*February 23, 2010*

**Honors 7 grade science**

2 ways that bacteria can change. (harmless to harmfull)

*February 2, 2010*

**probability**

I've got a different answer from the Actuary exam guide. You need to make a Venn Diagram and make x,y, and z into the middle portions of the diagram between AB, AC, and BC. From the question you know that x+y=1/4, x+z=1/3 and y+z=5/12. Adding these equations gives (x+y)+(x...

*February 1, 2010*

**english**

what's a good comparative essay title for catch-22 and slaughterhouse-five?

*January 20, 2010*

**english**

thanks, but i still don't understand

*January 20, 2010*

**english**

I really don't know how Slaughterhouse-five and Catch-22 use similar motifs to convey their anti-war message?? I don't understand how their anti-war message is similar if that makes more sense.

*January 20, 2010*

**Pre-algebra**

I can't figure out how to solve: Question #1: Two number cubes are rolled and a coin is tossed. Find the number of possible outcomes. Question #2: What is the probability of winning a lottery game where the winning number is made up of 6 digits from 0-9 chosen at random.

*December 3, 2009*

**4th grade math**

The first question states that Jeff runs 25 miles a week. He wants to run more than 25 miles. If Jeff runs 3 more miles each week, how many miles will he be running 6 weeks from now?

*November 23, 2009*

**4th grade-math**

Jeff runs 52 miles a week. How many weeks have passed since he was running 25 miles a week?

*November 23, 2009*

**Math problem I need help with**

Combination of coins that can be used; fifty-cent piece, quarters, dimes, nickels, and pennies Q: My 3 types of coins total 37 cents. I have fewer than 4, but more than 1, of each coin. What are the coins?

*November 9, 2009*

**Math**

Is this a quadratic or linear function? Identify the quadratic,linear, and constant terms 3(x-2)^2+12x

*November 3, 2009*

**math dividing**

how do i divide stuff like this 1.06 Divided 0.06

*October 28, 2009*

**Math**

find the vertex, axis of symmetry,y int and third point 3x^2-12x+10 Can someone give me a youtube link for this

*October 25, 2009*

**Math**

determine the dimensions of each matrix product A X B 2X3 3X5 G X C 4X7 7X1

*October 14, 2009*

**Algebra**

Ok, I remember a little bit I should subtract z from both sides so I get u-z=vw+z-z which simplifies to u-z=vw but I can't remember from there.

*October 14, 2009*

**Algebra**

u=vw+z. I need to solve for v. Can this be done? or is the answer just u=vw+z?

*October 14, 2009*

**Algebra**

The formula to compute a person's body mass index is B=703*w/h2 B represents the body mass index, w is the person's weight in pounds and h represents the person's height in inches. I need to: a. solve the formula for w. b. What is the weight to the nearest pound of...

*October 14, 2009*

**Algebra**

If each lap in a swimming pool is 100 meters long how many laps does it take to go a mile. I know there are 1609.344 meters in a mile, but what do I do from there?

*October 14, 2009*

**Math**

Solve using substitution method 2x-7y=-6 x=5y

*October 1, 2009*

**algebra**

density=8.48g/mL mass=1.83 kg volume=

*September 24, 2009*

**math**

7\8,8\10,2\3

*September 22, 2009*

**Chemistry**

An isotonic solution contains 0.88% NaCl by mass per volume. Calculate the percent mass per volume for isotonic solutions containing each of the following solutes at 15 degrees C. Assume a van't Hoff factor of 1.9 for all ionic solutes. KCL NaBr Glucose

*September 17, 2009*

**algebra 1A**

40 more than the product of 177 and n

*September 17, 2009*

**Language**

What part of speech is the word "color" in the sentence: His hair is the color of shimmering gold. I think it is a noun.

*September 15, 2009*

**algebra**

2 4 - - - a b

*September 15, 2009*

**6th grade Math**

whats the divisibility rule for 90

*September 8, 2009*

**Maths**

Eleven people, 7 men and 4 women, successfully completed their study at the School of Astronautics. A team of 6 people needs to be selected from them for the next intergalactic travel. In how many ways can 6 astronauts be selected, if at least 2 women and 3 men must be in the ...

*July 15, 2009*

**math**

thank you so much

*June 16, 2009*

**math**

Oh, it was me who posted the last post as anonymous, i forgot to put my name in!

*June 16, 2009*

**math**

I have the same question as Sally: What is the prime factorization of 225? Or, just how do you find prime factorization??? Thanks.

*June 16, 2009*

**English/Music**

I need to come up with a song that has lyrics that are full of schemes and tropes and it must be school appropriate and a current hit. I have no idea what to pick, any ideas?

*June 3, 2009*

**math**

30 is added to 1/3 of a number. the results is double the number. What is the number?

*May 14, 2009*

**Calculus**

Yeah?

*May 6, 2009*

**Calculus**

Is the function F(x)= the square root of 1-x^2 continuous at x = 1? Give the reason for your answer.

*May 6, 2009*

**Physical Science**

How are energy, work, and power related?

*May 5, 2009*

**6thgrade math**

how many feet are in 3 yards

*April 29, 2009*

**social studies**

why was the roman coliseum built please respond quikly thanks ~tyler

*April 27, 2009*

**math**

Kendis types 150 words in 2 min, how many words does she type in 1 min? And how do you get the answer!..thanks

*April 20, 2009*

**Math**

A piano has 88 keys. Show with numbers the probability of hitting a particular key if you shut your eyes and strike one key.

*April 3, 2009*

**physics**

How much work in joules is done by a person who uses a force of 25 N to move a desk 3 m? Show work and formula.

*March 24, 2009*

**math**

how do you determine whether{(1,4),(2,6),(3,7),(4,4)} is a function????

*March 19, 2009*

**English/Social Studies**

I have to pick a topic that involes oppression in recent times. A lot of other kids picked oppression against homosexuals and racial oppression. I want to stand out from the other kids in my classand I have no clue what to pick. It needs to be attention grabbing and draw the ...

*March 15, 2009*

**6th math**

how to find pie

*March 3, 2009*

**math**

a number between 1 and 100. If it is divided by 3 or 5, remainder is 1. If it is divided by 7, there is no remainder: what is my member?

*February 19, 2009*

**math -please help!! asap**

what is the vertical and horizontal difference between the two eqautions on a graph? Here are the eqautions- y=2x+3 y=2x-4 please help me on this. These two eqautions when graphed are parralell to each other i believe. But im not sure how to calculate the difference in ...

*February 16, 2009*

**math**

what is the vertical and horizontal difference between the two eqautions on a graph? Here are the eqautions- y=2x+3 y=2x-4 please help me on this. These two eqautions when graphed are parralell to each other. But im not sure how to calculate the difference in vertical and ...

*February 16, 2009*

**Chemistry/Dimensional Analysis**

The EPa detection limit for phosphate in water samples is 0.0450 milligrams per liter. Can phosphate be detected if 55.0 nanograms are found in 500.0 mL of solution? Show your calculations and explain.

*February 8, 2009*

**Chemistry/Dimensional Analysis**

The EPa detection limit for phosphate in water samples is 0.0450 milligrams per liter. Can phosphate be detected if 55.0 nanograms are found in 500.0 mL of solution? Show your calculations and explain.

*February 8, 2009*

**Spelling**

analogy flower is to rose as tree is to what?

*January 28, 2009*

**math**

i have 5 coins, penny, nickel,dime,quarter and a loonie. Ho many different amounts of money could i pay using any combinations of these coins?

*January 28, 2009*

**Math word gr 8**

For the month of January, the average afternoon temperature in Calgard is 1/4 the average morning temperature. The average afternoon temperature is -4 C. What is the average morning temperature? a.) If m represents the average morning temperature, what equation models this ...

*January 26, 2009*

**8th grade**

People can be left-handed, right-handed or ambidextrous. The number of boys in Canadian secondary schools who are left handed is about 1/7 the number of boys who are right-handed. About 11% of boys are left-handed. Write and solve an equation to determine what percent of boys ...

*January 26, 2009*

**8th grade - math**

3 = y/-4 Does y = 12? Show the work

*January 26, 2009*

**Science**

i don't care

*January 22, 2009*

**Literature**

From Act I of "Julius Caesar"/ 1) How do the workmen celebrate as the play begins? 2) Who does their celebration annoy Flavius and Marullus? 3) What warning does the soothsayer give to Caesar? 4) What does Caesar's reaction tell you about him?

*January 22, 2009*

**Math intermediate algebra**

how do i find the prediction equation for a given set of data? Final tomorrow plzz help

*January 22, 2009*

**Intermediate Algebra**

how do you find the prediction equation for a given set of data? plz help final tomorrow!!

*January 21, 2009*

**MAtH**

16 gallons. add 175 and 225 together and divide them by 25.

*January 21, 2009*

**math**

200 by 100

*January 21, 2009*

**Math**

are these in correct order from least to greatest 100feet, 10,000inches, 1km, 1 mile

*January 21, 2009*

**Math**

ok so it would be 100ft, than 10,000in than 1 km & 1 mile correct?

*January 21, 2009*

**Math**

put these in order from least to greatest 1 kilometer, 1 mile, 100 feet, 10,000inches. I believe it would be 10,000inches, 100ft, 1km, 1 mile?

*January 21, 2009*

**Math**

A swimming pool is 50 meters long. If I swim 60 lengths of the pool each day for one week (7 days) how many kilometers did I swim? Would the answer be 1050km? 50m * .05km * 60 *7 = 1050km

*January 21, 2009*

**math**

if I have 1/2 liter of while and drink another 750 milliliters of water how many liters of water did I drink in all? I believe it is 1 and 1/4 is this correct?

*January 21, 2009*