Thursday

January 19, 2017
Total # Posts: 104,082

**Physical Science**

Question: Suppose you have sunlight shining on two clear containers of water on a table. Light waves refract through one of the containers but diffract around the other container. Describe how the two containers are different. (I have to write three lines, it's not a lot...

*January 12, 2017*

***English**

Sorry hit enter before i was done. ... comparing Oedipus Rex,Hamlet, King Lear and Death of a Sales men I say they are the same. a tragedy for a rich person is no different compared to a poor person except the fact that for a rich person it affects more people. However, i am ...

*January 12, 2017*

**Engli**

How is the tragedy of a rich and powerful person different than that of a poor and powerless person?

*January 12, 2017*

**Math**

Kaya pasted 3 rows of photos on each of 5 pages of her scrapbook. She put 2 photos in each row. How many photos are in Kaya's scrapbook?

*January 12, 2017*

**Calculus**

Find the derivative of the function to the velocity function, and plug in 2 for t.

*January 12, 2017*

**Physical science **

two forces of 5N and 12N respectively act on the same point.show how you would determine the magnitude of the resultant by using the tail to head and tail to tail methods and Pythagoras theorem

*January 12, 2017*

**SS**

Hint: the main words behind the ruling were "separate but equal."

*January 12, 2017*

**Physics**

For part two, I think they are referring to the energy it takes to convert liquid water from 100 degrees to boiling water at 100 degrees (latent heat). I understand the first part now.

*January 12, 2017*

**Physics**

You and another person go to the museum and decide to take a look at an exhibit that has a bike with an attached heating coil/generator. The coil is placed in a tank of water at 20 deg C. Peddling makes the coil increase the energy of the water. The goal is to make the water ...

*January 12, 2017*

**sdsdd**

box contains 100 bolts of which 9 are defective. Find the probability that a bolt chosen at random is not defective.

*January 12, 2017*

**4th grade math**

Rhonda bakes p pies Mary bakes 3p pies If together they bake 20 pies, how many pies does Mary bake

*January 12, 2017*

**Physics**

An object is 10 mters long and has a weight of 125N. The weight of the object is determined by the expression, 250N= a10m+B kg/m. What are the units of a and B

*January 11, 2017*

**Physics **

What is the period of a wave that travels through a spring at 2.5 m/s and has a wavelength of 1.3 meters?

*January 11, 2017*

**Math, Algebra, **

Help! I can't understand or find out the answer, I tried but I keep getting lost! George rides a cab to work 3 days a week. He pays $3.50 for the cab to pick him up. He pays an additional fee for each mile driven. In one week, George paid $35.25. If he rides 11 miles each ...

*January 11, 2017*

**Math**

In a triangle ABC,AB=5cm,BC=12cm,angle ABC=90Â°calculate 1)the length of AC. 2)the area of the triangle 3)the length of the perpendicular from B to AC

*January 11, 2017*

**Math, Algebra**

Can you please help me! I solved it, but I'm not sure if I'm right. ------------------------------ Paulo pays $45.99 per month for unlimited calls, with additional charges for text messages. His bill for 4 months is $207.96. If he sends 100 texts each month, how much ...

*January 11, 2017*

**math**

Hoshi walks10 meters in 3 seconds.what is her rate.

*January 11, 2017*

**JUST PLAIN EASY**

JNISGKDHTA IHS ANWHEMSHOGMTE ANM IG WJRNOGNUG Rule: every other letter start at the beginning at each word

*January 11, 2017*

**Social Studies**

ABD is right

*January 11, 2017*

**math**

1. In the middle of the page, draw two vertical lines an inch long, an inch apart, and that are parallel to each other. 2. About a half inch below the lines, draw a half-inch horizontal line that is centered between the lines. 3. Draw a line from the bottom of the left ...

*January 11, 2017*

**math**

A number X is 3 times greater than the number Y, and Y is 3 times greater than Z. If the sum of Y and Z is equal to 50, what is the value of X? Please show working out, thanks.

*January 11, 2017*

**math;););)**

Apply the 57-degree counterclockwise rotation about the origin to the vectors [1, 0] and [0,1], then use the image vectors (written as columns) to form the coe cient matrix M for the rotation. Test M by calculating the products M[1] [0] and M[0] [1 ]. Where does this rotation ...

*January 11, 2017*

**Math;);)**

Use the vector form of the Law of Cosines to show that |u + v|^2 ? (|u| + |v|)^2 holds for any vectors u and v. What does this prove?

*January 11, 2017*

**Math**

2.75 times 2 .5 times 11

*January 10, 2017*

**math**

A teacher from Anderson Middle School printed k nametags in preparation for the science fair. Half of the nametags were given out to students and 100 nametags were given out to parents. Three-fifths of the remaining nametags were given out to teachers and contests judges. How ...

*January 10, 2017*

**Earth science **

Most of the sand that makes up the sandstone found in New York State was originally deposited in which type of layers?

*January 10, 2017*

**math;);)**

wait actually is it divide by 7 or 8? shouldn't it be 7?

*January 10, 2017*

**math;);)**

ok thx

*January 10, 2017*

**math;);)**

During one term in Math 310, Min Lee took seven tests, the last of which carried twice the weight of each of the others when averages were computed. Min’s test-score vector for the term was [84,78,91,80,72,88,83]. Show that Min’s final average, a weighted average, ...

*January 10, 2017*

**Math**

The area of a playground is 50 yd^2. The width of the playground is 5 yd longer than its length. Find the length and width of the playground.

*January 10, 2017*

**Chemistry**

why is a solution of copper sulfate and sulfuric acid required in corrosion testing? Won't the protons and the positive ions adhere to the metals surface and contaminant it?? Just a curious q. Thanks!

*January 10, 2017*

**Science**

What's pyramid of biomass?

*January 10, 2017*

**Algebra**

Find the sum of the odd integers from 1 through 49.

*January 10, 2017*

**language arts**

This semester you read several memoirs, including pieces by Ernesto Galarza and Russell Baker. Return to “Barrio Boy” and “No Gumption” now. How are these two memoirs similar? How are they different? In what ways are the authors’ choices and depictions...

*January 10, 2017*

**EmberShy**

1. What is the product of (-6.8)^2? Is the answer 46.24?

*January 10, 2017*

**Physics**

An airplane travelling north at 400 m/s is accelerated due east at a rate of 50m/s^2 for 6 seconds. If the effects of air resistance and gravity are ignored, what is the final speed of the plane? My working: v=vo+at where a=50m/s Vo = 400 m/s t = 6s thus: Vo=400+50(6) =700m/s ...

*January 10, 2017*

**geometry**

42 ka vargmul kya hota hai

*January 10, 2017*

**math**

Christin's age is equal to three times her age in 3 years' time minus three times her age 3 years ago. What is her age now? Please explain how you got the answer as well, thanks.

*January 10, 2017*

**math**

Patel, Quoc and Ron live near each other along the same straight road. Patel lives 0.6km from Quoc. Ron lives 0.4km from Patel. How far apart do Quoc and Ron live? A) They must live 0.2km apart. B) They must live 1.0km apart. C) They could live 0.2km or 1.0km apart. D) They ...

*January 10, 2017*

**physics`**

actually never mind I asked a different website and they responded quicker so I got my answer

*January 10, 2017*

**physics`**

which has more momentum: a snail moving at .001m/s or a 2-ton boulder resting on the ground? why?

*January 10, 2017*

**Math science etc**

Construct a triangle in which BC=5.2 AB-AC=1.2cm and B=60° Also write the construction

*January 10, 2017*

**northwester**

Write 608,000 in expanded form.

*January 9, 2017*

**math**

A farmer collected some eggs from his farm and found b eggs broken. He packed the remaining eggs in c egg cartons. Each egg carton can hold a dozen eggs and no eggs were leftover. Write an algebraic expression for the number of eggs he collected initially in terms of b and c.

*January 9, 2017*

**Science, Chemistry**

A 1050.0 mL solution of NaOH is neutralized by 0.25 L of 2.00M Nitric Acid using Bromothymol Blue as an indicator. The concentration of the NaOH solution is 0.48M. True or False

*January 9, 2017*

**math**

The weight of 2 science fiction books and 1 autobiography is 5/6w pounds. What is the total weight of 4 of these science fiction books and 2 of these autobiographies?

*January 9, 2017*

**math**

if the average daily sales amount for the past 5 days was (2.3q + 1.4) dollars, write an algebraic expression for the total sales amount for the past 5 days.

*January 9, 2017*

**math**

40% of k liters 0.40*kL 0.60*wL 0.40kL + 0.60wL = 1wL is this the correct answer

*January 9, 2017*

**math**

40% of k liters of acid are added to 60% of w liters of water. Write an algebraic expression for the total volume of the solution.

*January 9, 2017*

**Geography**

What geography blocks monsoons?

*January 9, 2017*

**Friend**

Buenos Dias mis amigos hoy está bien frío aquí en Florida! Hoy mi esposo y yo cumplimos 46 años de casados! Translate to English

*January 9, 2017*

**maths**

16 are girls and 1/2 are girls

*January 9, 2017*

**Physics**

the orbital period of the moon is 27.32 days. The international space station has an orbital period of 90 minutes. What is the mean distance between the center of the earth and the center of the international space station? moons orbital radius: 25,201

*January 9, 2017*

**all**

For highschool what percentages correspond with grade letters. like is a 91% an A, A-, or A+

*January 9, 2017*

**health**

I never said I was suicidal

*January 9, 2017*

**health**

I already reported it

*January 9, 2017*

**health**

Why do schools not teach childeren about sexual abuse. If i was taught that no one is alowed to touch my private parts when I was in kindergarten then i would have been able to tell that my father was raping me.

*January 9, 2017*

**Math**

AB ∥ CD

*January 9, 2017*

**Math**

AB ? CD

*January 9, 2017*

**Math**

AB ☍ CD

*January 9, 2017*

**Physics**

mgH=mv²/2 v=sqrt(2gH) F=?p/?t= ?(mv)/ ?t=m ?(v)/?t= =m[sqrt(2gH)-0]/?t= m[sqrt(2gH)]/ ?t

*January 9, 2017*

**mosab bin omair**

The answer is 0.038. Substituting into the equilibrium expression, you have K = (0.013*0.0001)/(0.000034)

*January 9, 2017*

**Algebra - Solving Systems by Elmination**

3x + 8y = -5 -2x + 2y = 18

*January 9, 2017*

**math**

Please help with this test, I was out of school for awhile due to my dad passing away from heart and kidney failure. I'm trying to catch up on missing work and get good grades to make my mom happy and every time I ask my teachers for help with this test they really don'...

*January 9, 2017*

**Social Studies Abolitionism Quiz**

Who was the publisher of The Liberator?

*January 9, 2017*

**Social Studies Abolitionism Quiz**

Based on this early illustration of the town, what is one reason why Francis Lowell's partners might have chosen this area to build the factory town of Lowell?

*January 9, 2017*

**CHEMISTRY URGENT**

1. You have been given a sample of unknown molarity. Calculate the molarity of a solution which has been prepared by dissolving 8.75 moles of sodium chloride in enough water to produce a solution of 6.22l. 2. You have a sample which consists of 428g sodium hydroxide (NaOH) ...

*January 9, 2017*

**math**

Uncle Bill is 6 times as old as John and he will be 4 times as old as John in 4 years' time. If Uncle Bill is less than 60 years of age, how old will he be in 6 years' time? Please show working out as well, thanks.

*January 9, 2017*

**math**

A 2m wide path is built around a 20m square swimming pool. The distance around the outside of the path will be: A) 96m B) 48m C) 92m D) 56m Also, please explain how you got the answer, thanks.

*January 9, 2017*

**math**

Oh, ok, thanks.

*January 9, 2017*

**math**

Lee bought 8 T-shirts for $2.32 each and sold them for $5.18 each. How much money did she make?

*January 9, 2017*

**Math**

Which pair of ratios does not form a true proportion? A 8:14â€“20:35 B 6 to 10 and 15 to 25 C 9/5 equals 27/15 D 12:15 and 30:50

*January 8, 2017*

**physics**

oh! ok thanks

*January 8, 2017*

**physics**

But that doesn't make sense because an apple can't make the earth move, even a little.

*January 8, 2017*

**physics**

when an apple falls from a tree, and strikes the ground without bouncing, what happens to its momentum?

*January 8, 2017*

**Science **

Wolves: Moose: 6 10 3.Calculate the average of moose killed by one wolf in each territory. So, would I divide the number of moose by wolves, or wolves by moose?

*January 8, 2017*

**math**

A scientist observes two colonies of bacteria. The first grows at a rate of 2.2 x 10^6 bacteria per hour. The other grows at a rate of 6.3 x 10^5 bacteria per hour. Which grows faster? How do you know?

*January 8, 2017*

**Math**

At one afterschool event, of the students were 8th graders and the rest were 7th graders. Of the students who were in 7th grade, the ratio of boys to girls was 3:5. What percent of all the students at the afterschool event were boys who are in the 7th grade? Help plz

*January 8, 2017*

**physics **

when temperature increases from t to # t and the moment of inertia is increase from I to #I. the coefficent of linear expansion is alpha .THE RATIO OF #I\I IS

*January 8, 2017*

**Maths**

PQRS is a rectangle, whose diagnols PR =2x + QS=3x+1.Find the value of x

*January 8, 2017*

**Account _trial bal**

Goods return from debtors come in which account debit or credit

*January 8, 2017*

**English **

Help me write a hyperbole poem

*January 7, 2017*

**Physical science**

What was Jack's speed from 5 sec to 10 sec

*January 7, 2017*

**math**

With 300 dollars one will have to buy total 30 items. If price of a exercise book is 30 dollars, price of pen is 24 dollars and price of a pencil is 6 dollars, and if that person is bound to buy at least one of each item, how many exercise books, how many pens and how many ...

*January 7, 2017*

**stiochemetry**

what mass of silver nitrate is needed to prepare 100cm3 of silver nitrate solution, concentration 0.2mol/dm3? the mass of one mole of silver nitrate is 170g

*January 7, 2017*

**accounting**

Revenue is traditionally recognized in the accounting records when A. cash is received. B. services are rendered. C. itâ€™s incurred. D. None of the above

*January 6, 2017*

**Math**

Need to build a rectangular garden on an area of 8,000 sf. What are the dimensions?

*January 6, 2017*

**Physics**

Find the specific heat of an unknown metal given this data: Mass of the metal = 120 g Temp of the metal = 220 degrees Mass of the water = 30 g Initial Temp of the water = 20 degrees Final Temp of the water = 85.6 degrees Specific Heat of the water = 4.186 J/gram C I get 0.51 J...

*January 6, 2017*

**American Government**

For Q3, it might help to look up a graph for public debt over the years.

*January 6, 2017*

**Math**

One third of a number divided by itself gives 1/3. Find the number.

*January 6, 2017*

**Stem**

Calculate the pH of the solution resulting from the addition of 20.0 mL of 0.100 M NaOH to 30.0 mL of 0.100 M HNO3. (a) 1.35 (b) 1.70 (c) 1.95 (d) 2.52

*January 6, 2017*

**Math**

The average of third number is 29 if the average of two number is27 .find the third number ?

*January 6, 2017*

**chemistry**

Metal carbonates => Metal Oxides + Non-metal oxides Ammonium Carbonates => Ammonia (gas) + Water (gas) + Carbon Dioxide (gas)

*January 5, 2017*

**Chemistry**

Single Replacement Oxidation Reduction Rxn Zn(s) + 2HCl(aq) => ZnCl2(aq) + H2(g)

*January 5, 2017*

**Chemistry**

Without aluminum, zero moles. You also need to include molarity of sulfuric acid.

*January 5, 2017*

**calculus**

f'(-2) if F(x)=g(h(x))

*January 5, 2017*

**Math **

If a boy run at the rate of 10km/h then whow long will he take to cover a distance of 450 m

*January 5, 2017*

**Math**

I am a polygon. The sum of my angles equals 180. I have two sidesthat are congruent. What am I?

*January 5, 2017*

**math**

51 is the product of Rhonda's age and 3.

*January 5, 2017*

**Math**

One of the largest pumpkins ever grown weighted 4/5 ton. About how much did the pumpkin weight.

*January 5, 2017*