Saturday

December 10, 2016
Total # Posts: 837

**Physics , static fluids**

Thank you SO much for all your help!!

*November 26, 2016*

**Physics , static fluids**

last one of the night, I promise. Physics really isn't my thing.

*November 26, 2016*

**Physics , static fluids**

The density of ice is ?(ice) = 920 kg/m3, and the average density of water is ?(water) = 1.00 g/cm3. What fraction of the total volume of a block of ice is exposed when floating in water? what does this even mean?

*November 26, 2016*

**Physics , static fluids**

A particular object weighs 313 N in air and 264 N when immersed in alcohol of density 0.70 g/cm3. What is the volume (in L) and the density (in kg/m3) of the object? I had origionally used the 264N as the force of buoyancy and did the Fb=density*volume*g, then solved for ...

*November 26, 2016*

**Physics , static fluids**

I hadn't seen your answer the first time until after I posted this one, your reply to both helped! thanks so much scott!

*November 26, 2016*

**Physics , static fluids**

hello, I hope you can help... A diver accustomed to standard snorkel tubing of length 25 cm tries a self-made tube of length 8.6 m. During the attempt, what is the pressure difference (in kPa) between the external pressure on the diver's chest and the air pressure in the ...

*November 26, 2016*

**Physics**

Thanks!!

*November 26, 2016*

**Physics**

A diver accustomed to standard snorkel tubing of length 25 cm tries a self-made tube of length 8.6 m. During the attempt, what is the pressure difference (in kPa) between the external pressure on the diver's chest and the air pressure in the diver's lungs? I've ...

*November 26, 2016*

**english books**

-In Fahrenheit 451 What is Motag's numbness when hes at the subway.

*November 20, 2016*

**english books**

Yes, I have but I'm not sure if what I have as my answer is correct, but I said that he shows Montag that the thing he was missing in his life wasn't the actual books but the thing that was once in books.

*November 14, 2016*

**english books**

In the book FAHRENHEIT 451, how does Faber change Montag's view on book?

*November 14, 2016*

**Maths**

The angle of elevation of the top of a tower from a point 42m away from its base on level ground is 36°. Find the height of the tower

*November 12, 2016*

**chemistry**

Copper used in electric wires comes in two flavors (isotopes): 63Cu and 65Cu. 63Cu has an atomic mass of 62.9298 amu and an abundance of 69.09%. The other isotope, 65Cu, has an abundance of 30.91%. The average atomic mass between these two isotopes is 63.546 amu. Calculate the...

*October 31, 2016*

**poetry**

what's the significance of the poet's structure and style choice in the poem Dover Beach?

*October 23, 2016*

**History**

what's the historical significance of the Hotel des Invalides

*October 20, 2016*

**Math **

The sum of the ages of two student is 35. If one students age is a write an expression for the age of the other student in terms of a

*October 15, 2016*

**History**

What does this quote mean"Where they burn book they will also ultimately burn people"

*October 12, 2016*

**History**

think that all the authors had a strong belief of social justice and they encouraged equality such as socialist and communist

*October 12, 2016*

**History**

In the book burnings in Germany what did all the authors of the burned books had in common?

*October 12, 2016*

**History**

why where they called "un-German" books,

*October 12, 2016*

**History **

what was the motivation and the purpose of the book burnings in Germany.

*October 12, 2016*

**Matg**

An equilateral triangle has a perimeter of (33x + 21). What is the length of each side of the triangle?

*October 6, 2016*

**Wold History**

@Ms.sue

*September 22, 2016*

**Wold History**

1. Which statement best describes the period known as the Old Kingdom? It was a time of dynastic uncertainty. It was a time of development. It was a time of great geographic expansion.*** 2. In what way was the Nile both a benefit and a disadvantage for Egypt? It ...

*September 22, 2016*

**Math 6th grade**

Mr.Baker has baked some muffins. If he packs them in boxes of 4, he will have 3 left over. If he packs them in boxes of 5, he will also have 3 left over If he packs them in boxes of 6, he will have only 1 left over. Find the least possible number of muffins Mr.Baker has baked.

*September 19, 2016*

**physics**

A capacitor with a capacitance of C = 25.7 μF is slowly charged by a constant current of I = 45.7 nA. How long does it take to charge the capacitor to a voltage of V = 29.4 V?

*September 19, 2016*

**Math**

Is the value of the second 5 in 450,852,137 one-tenth the value of the first 5 ? Explain

*August 4, 2016*

**Socials Studies**

Métis Bison hunt rules in Northwest Canada in the 1800s

*July 14, 2016*

**Socials Studies**

Why were the rules of the bison hunt so strict? Why might some punishments involve destruction of property? The rules were so strict because it was dangerous and can cause death and serious injuries. Am I right? That's my answer for the first question and I need help on ...

*July 14, 2016*

**Physics**

Two 2.46uC point charges are located on the x axis. One is at x = 1.01m, and the other is at x = -1.01m. Determine the electric field on the y axis at y = 0.455m & Calculate the electric force on a -2.82uC charge placed on the y axis at y = 0.455m I'm using E=kq/r^2 and F=...

*July 12, 2016*

**Socials Studies**

Thank you for the link Ms. Sue

*July 10, 2016*

**Socials Studies**

Greatest risks: - if caught, they will be handed back to their masters - be severely punished - be kidnapped and sold to another master

*July 10, 2016*

**Socials Studies**

What do you think were the three greatest risks a fugitive slave might face on the underground railroad?

*July 10, 2016*

**Physics**

A playground merry-go-round of radius R = 1.92m has a moment of inertia of I = 221kgm^2 and is rotating at 14.0rev/min about a frictionless vertical axle. Facing the axle, a 29.8kg child hops onto the merry-go-round and manages to sit down on its edge. What is the new angular ...

*July 5, 2016*

**Physics**

A ring (hollow cylinder) of mass 2.89kg, inner radius 5.35cm, and outer radius 6.35cm rolls (without slipping) up an inclined plane that makes an angle of θ=35.6°, as shown in the figure below. At the moment the ring is at position x = 1.87m up the plane, its speed is...

*July 5, 2016*

**math**

solve the equation:3(x-2)^2-12=0

*June 12, 2016*

**math**

I'm really struggling with this word problem, please help. Alex is selling tomatoes. last week he bought some at $20 for 50 tomatoes and sold them (except for 30 rotten ones) at 120c each to make $84 profit. how many tomatoes did he buy?

*June 8, 2016*

**Chemistry **

A sample of oxalic acid (H2C2O4, with two acidic protons), of volume 37.09 mL was titrated to the stoichiometric point with 22.41 mL of 0.163 M NaOH(aq). What is the molarity of the oxalic acid? Answer in units of M.

*May 29, 2016*

**Chemistry **

A sample of sodium hydroxide of volume 11 mL was titrated to the stoichiometric point with 24.5 mL of 0.138 M HCl(aq). What is the initial molarity of NaOH in the solution? Answer in units of M.

*May 29, 2016*

**Chemistry **

If the reaction 2H2O2 →2H2O+O2 has a 45% yield, what is the molarity of the H2O2 solution if 2.5 L of this solution pro- duces 150 g of O2?

*May 29, 2016*

**Chemistry **

Suppose that 12.41 mL of 0.169 M NaOH(aq) was required to titrate 0.1579 g of an unknown acid (HX). What is the molar mass of the acid? Answer in units of g/mol.

*May 29, 2016*

**math**

your barangay officials are planning to raise funds to help the public library.they decided to sell 4000.00 draw tickets worth 10 each. one ticket will win the prize worth 3,500.00. five tickets will each win a prize worth 700.00 each and three tickets will each win the prize ...

*April 28, 2016*

**Math**

The walls are rectangles with a height of 6 feet. A pint of paint covers 50 square feet. How much paint do I need to paint the inside walls R=1.54 for three walls?

*April 6, 2016*

**Math**

Karl and his dad are building a playhouse, the floor is a rectangle that is 6 feet by 8 1/2 feet How much carpeting do they need for the floor? P= 6 plus 8.5 *2= 29.0 A= L*W= 6*8.5=51

*April 6, 2016*

**Statistics**

Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial. n=19, x=15 p=.85, find P(15)

*April 2, 2016*

**math**

Karen mixed 1/2 cup of orange juice, 3/4 cup of pineapple juive , and 1/3 cup of grapefruit juice. How many cups of juice did she use?? Please help:)

*April 1, 2016*

**math**

Janice conducted a survey at the local calculator factory. She discovered that 10% of every 80 calculators did not work. Using this survey, what kind of predictions can she make about the next 400 calculators? a-not enough information b-40 will not work c-5 will not work d-8 ...

*March 30, 2016*

**math**

Celia has a large container in which four different kinds of coins are thoroughly mixed. She wants to take a sample of her coins to estimate which kind of coin she has the most. Which of the following methods is the best way for her to select a sample? A]taking coins until she...

*March 30, 2016*

**math**

tyson charges $20 per square foot of rug for a basic design. a client orders one basic rectangular-shaped rug that is 6 feet long and 4 feet wide and one basic rug shaped like a parallelogram that is not a rectangle with a base that is 8 feet long and a height that is 3 feet. ...

*March 23, 2016*

**science**

how are artificial flavors made

*March 9, 2016*

**science**

what is partially hydrogenated soybean oil and how is it made

*March 9, 2016*

**phy 231**

Tall buildings are flexible and undergo simple harmonic motion (SMH) when excited by wind. Suppose the top floor of a skyscraper is in SMH, swaying back and forth with a frequency of 0.181 Hz and an amplitude of 1.5 m. a.What is the maximum speed experienced by top floor ...

*March 8, 2016*

**phy 231**

A block of mass 0.39 kg connected to a spring with spring constant 30 N/m is oscillating on a frictionless horizontal surface. Its speed as it passes through its equilibrium position is 0.5 m/s. What is the total energy of the system in J?

*March 8, 2016*

**Physics**

A slab of ice with parallel surfaces floats on water. What is the angle of refraction of a light ray in water if the light ray is incident on the upper ice surface with an angle of 60° to the normal?

*March 4, 2016*

**grammar**

What's the prefix suffix and root meaning of spouting

*March 1, 2016*

**calculus**

A ship, proceeding southward on a straight course at the rate of 12 miles/hr is, at noon, 40 miles due north of a second ship, which is sailing west at 15 miles/hr. a) How fast are the ships approaching each other 1 hour later? b) Are the ships approaching each other or are ...

*February 27, 2016*

**calculus**

An angler has a fish at the end of his line, which is being reeled in at the rate of 2 feet per second from a bridge 30 feet above the water. At what speed is the fish moving through the water towards the bridge when the amount of line out is 50 feet? (Assume the fish is at ...

*February 27, 2016*

**calculus**

The sales(in millions) of a DVD recording of a hit movie t years from the date of release is given by a) Find the rate of which the sales are changing at time t. b) How fast are the sales changing at the time the DVDs are released? c) How fast are the sales changing two years ...

*February 27, 2016*

**calculus**

Sand is falling into a conical pile so that the radius of the base of the pile is always equal to one half its altitude. If the sand is falling at the rate of 10 cubic feet per minute, how fast is the altitude of the pile increasing when the pile is 5 feet deep?

*February 27, 2016*

**Calculus**

Estimate the area of the plane region bounded by the graph of f(x) = e^x, the x-axis, and the vertical lines x = 0 and x = 8 using the trapezoidal method with trapezoids of equal width. Round your answer to 4 decimal places. I got the answer 6892.7480 but it was incorrect and ...

*February 26, 2016*

**phy 231**

A mass-spring system oscillates with an amplitude of 4.00 cm. If the spring constant is 277 N/m and the mass is 573 g, a.determine the mechanical energy of the system. b.Determine the maximum speed of the object. c.Determine the maximum acceleration.

*February 20, 2016*

**phy 231**

It takes 23 hours 56 minutes and 4 seconds for the earth to make one revolution (mean sidereal day). a.What is the angular speed of the earth? I got 7.292x10^-5 rad/s b.Assume the earth is spherical. Relative to someone on the rotation axis, what is the linear speed of an ...

*February 20, 2016*

**civics**

What was the purpose of the Little rock nine going to the high school?

*February 18, 2016*

**phy 231**

An object of mass m1=3.3 kg moving at 4.7 m/s strikes a stationary second object of unknown mass. After an elastic collision, the first object is observed moving at 3.76 m/s at an angle of -41° with respect to the original line of motion. What is the energy of the second ...

*February 15, 2016*

**phy 231**

A car of mass 860.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 39.6 km/hr (11.0 m/s), the net power which the engine supplies is 5700.0 W (in addition to the extra power required to make up for air resistance and friction). Calculate ...

*February 14, 2016*

**math**

Justin has a total of 50 coins that are all nickels and quarters. He has 10 more nickels than quarters. How many of each coin does Justin have?

*February 10, 2016*

**civics**

what is the difference of the sixth and seventh amendment

*February 10, 2016*

**Math lit,business studies,consumer studies,tourism**

What career part should i follow

*February 10, 2016*

**Math **

I have 6 thousands,12 tens, 9 hundreds, 10 ones and 3 tenths. What number am I? This is a question on my 3rd grade daughters math homework and I'm completely confused. I think it may be 7030.03???

*February 9, 2016*

**PHY 231**

Two masses M1 = 6.30 kg and M2 = 3.30 kg are on a frictionless surface, attached by a thin string. A force of 40.3 N pulls on M2 at an angle of 28.5° from the horizontal as shown in the figure. Calculate the tension T in the string.

*February 1, 2016*

**PHY 231**

Mass m1 = 11.3 kg is on a horizontal surface. Mass m2 = 5.70 kg hangs freely on a rope which is attached to the first mass. The coefficient of static friction between m1 and the horizontal surface is μs = 0.573, while the coefficient of kinetic friction is μk = 0.130...

*January 31, 2016*

**Global History II**

Wow. Thank you for the quick lesson. Appreciate it. Have a good night.

*December 29, 2015*

**Global History II**

Russia wanted the waterway? Russia had a stronger army than Turkey. Sorry, got this question for homework and I can't find the answer in my notes or text, and don't remember talking about it in class, been struggling so I turned here

*December 29, 2015*

**Global History II**

Oh - so Turkey controlled an important waterway? Then why was Russia threat to them?

*December 29, 2015*

**Global History II**

I have no idea. I've been stuck on this one question for two days. I think it's B but I can't find any info to confirm it

*December 29, 2015*

**Global History II**

Throughout history, Russia has been a threat to Turkey because Turkey a) ha large supplies of minerals b) shared Russia's religious beliefs c) controlled an important waterway d) was the leader of the Arab states

*December 29, 2015*

**Chemistry**

What is the total number of joules of hear needed to change 200g of ice to water at O degree Celcius?

*November 21, 2015*

**Mechanical behavior**

5 uN

*November 8, 2015*

**algebra**

From a point on a straight road, 2 cars are driven in opposite direction. One care at 69 miles per hour and the other at 27 miles per hour. How many hours will they be 480 miles apart?

*November 7, 2015*

**science**

why is it important for a cell to grow before it replicates its DNA?

*November 1, 2015*

**Math**

Socks are on sale 4 Pairs for $5. How much would you pay for 8 Pairs of socks?

*October 20, 2015*

**physic**

In compressed state, a spring 3.00 meters long hanging from the ceiling has a potential energy of 2.0 joules. If the entire potential energy is used to release a ball of mass 1.2 kilograms vertically downward, then what is the kinetic energy of the ball when it reaches the ...

*October 16, 2015*

**Solving Linear Equations (Math)**

The length of a rectangle is 5m shorter than three times the width. The perimeter is 46m. Find the length of each side.

*September 24, 2015*

**IPC**

A motorcyclist changes the velocity of his bike from 20.0 meters/second to 35.0 meters/second under a constant acceleration of 4.00 meters/second2. How long does it take the bike to reach the final velocity?

*September 23, 2015*

**math - age problem**

3 years ago, Vin’s age is 3 times the age of Paul. At the present, Vin’s age is twice the age of Paul. What would be their age 3 years from now if the sum of their present age is 18?

*September 13, 2015*

**math**

1.) 3 years ago, Vin’s age is 3 times the age of Paul. At the present, Vin’s age is twice the age of Paul. What would be their age 3 years from now if the sum of their present age is 18? 2.) Willie bought a jacket for 26.86 pesos. The jacket’s price had been ...

*September 13, 2015*

**algeb**

help please :) 1.) 3 years ago, Vin’s age is 3 times the age of Paul. At the present, Vin’s age is twice the age of Paul. What would be their age 3 years from now if the sum of their present age is 18? 2.) Willie bought a jacket for 26.86 pesos. The jacket’s ...

*September 13, 2015*

**math**

Insert parentheses to make the statement true; 6 x 5 - 2^2 = 45

*September 9, 2015*

**History**

It is A. Increase in tres in exploration.

*September 2, 2015*

**math **

Which rate of speed is higher. A car completing a 500-mi race in 3 1/3 hours or a car completing a 300-hours in about 2 1/2 hours

*September 1, 2015*

**Life Science**

determing whether expired air contains CO2. 1.Formulate hypothesis 2.Aim 3. a) idependent V, dependent and controlled variables 4. methods step by step 5. observation

*August 20, 2015*

**Chemistry**

How many moles of Ag2CrO4 will be produced from 6 moles of AgNO3?

*August 1, 2015*

**HCCC**

7/3+1/3y=3y-3

*June 27, 2015*

**algebra**

That's wrong. ^

*June 22, 2015*

**Science**

some countries

*June 19, 2015*

**Geometry**

Find the circumference of a circle with a radius of 6 in. A:6in B:12in C:6 pi in D: 12 pi in

*June 1, 2015*

**Geometry**

In a 30,60,90 triangle 1: If b=12, find c 2: If b=3,find a Letter a is on the 90° side, b is on the bottom near 60° and c is near 30°. Could anyone explain how to do this? It's hard to understand from my textbook.

*May 19, 2015*

**Language Arts**

By the looks of it it looks like Yep. is correct =) Hope that makes everyone happy xD

*May 16, 2015*

**Geometry**

Cross multiplication 20+x = 6 ----- - x 5 Idk how to solve this with 2 x's

*May 13, 2015*

**Geometry**

Yes it's a 90, 45 45 triangle. And the letters go like this. A C B

*May 12, 2015*