Thursday

January 29, 2015

January 29, 2015

Total # Posts: 588

**Chemistry**

Explain why the FeCl3-KCI-HCl solution was used as a reference solution. Suggest a procedure you could follow to determine whether it was necessary to use this solution as a reference or whether distilled water would have been just as satisfactory.
*July 10, 2013*

**socials 11**

explain how the clothing women wore during the 1920s was indicative of their changing role.
*July 9, 2013*

**socials 11**

what event in europe inspired the formation of some canadians trade unions?
*July 8, 2013*

**socials 11**

what event in europe inspired the formation of some canadians trade unions?
*July 8, 2013*

**socials 11**

world war 1 !
*July 7, 2013*

**socials 11**

what war-related issue affected French and English relations in Canada for years to come?
*July 7, 2013*

**socials 11**

explain why the issue of conscription helped to further divide English and French relations in Canada.
*July 7, 2013*

**math**

ok! thanks a lot.
*July 4, 2013*

**math**

but the answer should be $ 26. 65 !
*July 4, 2013*

**math **

The markup on a restaurant mean is 250%. A meal costs $7.25 to produce. How much will the customer be charged, after markup and 5% GST are applied?
*July 4, 2013*

**socials 11**

although the German troops met with success against the invading Russian troops, in what way did these battles hurt the Germans?
*July 4, 2013*

**socials 11**

what would happen if troops managed to capture the enemy's front line?
*July 4, 2013*

**socials 11**

Why did entering no mans land come to mean almost certain death?
*July 4, 2013*

**Government**

Homework Help Powers that are shared by both the National Government and the States are called... A) reserved powers B) enumerated powers C) inherent powers D) implied powers E) concurrent powers The Supreme Court carries out most of the country's procedures for persons ...
*June 26, 2013*

**Math**

In math we're doing a review sheet and i dont get any of it so can someone please help!! What is the simplest form of the expression Radical 28 + radical 175 - radical 7
*May 30, 2013*

**math**

thank you ms.sue
*May 22, 2013*

**math**

a jet travels at 435.6 miles per hour. how far will it travel in 6.75 hours?
*May 22, 2013*

**4 grade math**

Find two mixed numbers so that the sum is 15 3/10 and the difference is 8 5/10
*May 21, 2013*

**4th grade math**

Find two mixed numbers so that the sum is 8 4/8 and the difference is 2 2/8
*May 21, 2013*

**Writing skills 1**

The answer for the number 20 is wrong. I just took a quiz and I picked that one and it turned out to be wrong.
*May 9, 2013*

**Chemistry**

What concentration of SO32– is in equilibrium with Ag2SO3(s) and 3.60 × 10-3 M Ag ? The Ksp is 8.46×10–12.
*April 25, 2013*

**Literature ?! Check my answers?**

C C B trust me i just took it
*April 17, 2013*

**physics**

A 35,000 kg locomotive is moving at a velocity of 11 m/s east. What is the magnitude of the locomotive's momentum?
*April 7, 2013*

**Math**

Jeremy and Cynthia leave at the same time to travel 75 miles to an area. Jeremy drives 15 miles in 12 minutes. Cynthia drives 26 minutes in 20 minutes. If they continue at the same rates, who will arrive at the area first?
*April 2, 2013*

**8th grade math **

In the original design for the livingroom genivie ve planned to have a 6ft by 8ft floor rug made after looking at the budget however she discovers she only had enough money to make a .75 times the size of the original how much fringe must she purchase to outline the new rug.
*March 25, 2013*

**social studies**

what nation is home to the gonges and indus river
*March 20, 2013*

**World Geography**

For good crops, Syrian farmers are still largely dependent on what?
*March 19, 2013*

**Geometry**

A 20 foot ladder is leaning aagainst a wall the base of the ladder is 7 feet away from the.wall hkw high up the wall will the ladder reacb
*March 11, 2013*

**Geometry**

A 20 foot ladder is leaning aagainst a wall the base of the ladder is 7 feet away from the.wall hkw high up the wall will the ladder reacb
*March 11, 2013*

**Physics**

So just for the record, the answer for A is right. For B, when calculating the resistance R, I messed up in regards to the radii. For the length i needed to use r=.034m and for the area r=4.5e-4m. What a silly mistake. Cheers! and thanks for responding! :)
*February 17, 2013*

**Physics**

I don't understand what you just did for A. I used emf=change in flux/change in time flux = magnetic field*area according to my book, the answer for A is right. Please explain!
*February 17, 2013*

**Physics**

A circular conducting coil with radius 3.40 cm is placed in a uniform magnetic field of 1.090 T with the plane of the coil perpendicular to the magnetic field. The coil is rotated 180° about the axis in 0.222 s. (a) What is the average induced emf in the coil during this ...
*February 17, 2013*

**Chemistry**

What is the final temperature after a 11.9 g piece of ice is placed into a Styrofoam cup containing 110 g of hot water at 73.3 degrees Celsius?
*February 15, 2013*

**math**

Charles mixed pineapple juice and orange juice to make a fruit punch. He made a total of 5 1/2 cups of the mixture and used 2 more cups of orange juice than pineapple juice. How much did he use of each type of juice?
*February 12, 2013*

**Chemistry**

Part A answer was number two and Part B was number one
*February 5, 2013*

**math average!**

My average is a 74 right now. My grades are 70( which counts as 60% as my grade and i have 2 more major test coming up) 94, 60 (which counts as 25% and i have about 5 more of this coming up) 90,100,83,91,71( i have about 3 more of these and they count as 15%) This was an ...
*February 4, 2013*

**math**

I have a 76 average right now, what grades do I need to get if i have 5 more tests and need to get an 85 average?
*February 4, 2013*

**Math**

Gina cut a piece of ribbon into 3 equal pieces. Then she cut off 2 inches off one piece to make it 3 inches. How long was the original piece of ribbon?
*January 30, 2013*

**Algebra**

LCD of x/x2+3x , 2x/x2-3x
*January 27, 2013*

**Physics**

Vf=Vi+at Vf=20 m/s+ 7m/s^2*3s Vf=41 m/s
*January 15, 2013*

**Physics**

Three point charges are on the x axis: −6 µC at −3 m, 7 µC at the origin, and −5 µC at 3 m. Find the force on the ﬁrst charge. The value of the Coulomb constant is 8.98755 × 10^9 N · m^2/C^2.
*January 15, 2013*

**physics**

A point charge of +1 µC is located at x = −2 cm and a second point charge of −8 µC is located at x = 6 cm. Where should a third charge of +1 µC be placed so that the electric ﬁeld at x = 0 cm is zero?
*January 15, 2013*

**social studies**

General Grant's army came closest to defeat in the West as a result of a surprise Confederate attack at the Battle of A. Fort Henry. B. Shiloh. C. Vicksburg. D. Manassas
*January 9, 2013*

**Art**

his art style was romanticism, and im not sure if he was apaprt of any movement.
*January 8, 2013*

**physics**

the muzzle velocity of a 50.0g shell leaving a 3.00kg rifle is 400 m/s what is the recoil velocity of the rifle
*December 16, 2012*

**statistics**

Scores on the ACT college entrance exam are Normally distributed with a mean µ = 20 and standard deviation σ = 5. An SRS of 25 ACT scores is selected, construct a 95% Confidence Interval for the sample mean (X-Bar) and interpret your result.
*December 3, 2012*

**math**

3x+3y+3z
*November 27, 2012*

**physics**

A solid sphere of radius 23 cm is positioned at the top of an incline that makes 23 degree angle with the horizontal. This initial position of the sphere is a vertical distance 3 m above its position when at the bottom of the incline. The sphere is released and moves down the ...
*November 27, 2012*

**physics**

A cylindrical 7.25 kg pulley with a radius of 0.864 m is used to lower a 7.13 kg bucket into a well. The bucket starts from rest and falls for 4.51 s. What is the linear acceleration of the falling bucket? The acceleration of gravity is 9.81 m/s^2.
*November 27, 2012*

**physics**

A 346 kg merry-go-round in the shape of a horizontal disk with a radius of 1.7 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. How large a torque would have to be exerted to bring the merry-go-round from rest to an angular speed of 4.7 ...
*November 27, 2012*

**geography**

Which continent have the oldest fossils been found?
*November 15, 2012*

**physics**

The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 2.9 rev/s in 8.5 s. At this point the person doing the laundry opens the lid, and a safety switch turns oﬀ the washer. The tub slows to rest in 11.6 s. Through how many...
*November 13, 2012*

**physics**

A remote-controlled car’s wheel accelerates at 22.7 rad/s. If the wheel begins with an angular speed of 11.0 rad/s, what is the wheel’s angular speed after exactly twenty full turns?
*November 13, 2012*

**physics**

A remote-controlled car’s wheel accelerates at 22.7 rad/s. If the wheel begins with an angular speed of 11.0 rad/s, what is the wheel’s angular speed after exactly twenty full turns?
*November 13, 2012*

**Pre Calc**

how much money should i invest at 8.2% compounded continuously if i wish to have $100,000 in 5 years?
*November 8, 2012*

**physics**

The planetMars requires 2.35 years to orbit the sun, which has a mass of 2 × 1030 kg, in an almost circular trajectory. Find the radius of the orbit of Mars as it circles the sun. The gravitational constant is 6.672 × 10−11 N · m2/kg2 . Answer in units...
*November 8, 2012*

**fractions from least to greatest**

1/6 4/24 16/96
*November 7, 2012*

**Chemistry**

H2P4: PHOTON EMISSION An electron in Li2+ falls from n = 2 to the ground state. Calculate the wavenumber, (νˉ), of the emitted photon.
*November 3, 2012*

**physics**

A wagon is pulled by a handle making an upward angle of 25° with a force of 25 N. What is the horizontal force pulling the wagon foward? What is the force lifting the wagon off the road?
*November 3, 2012*

**physics**

A 0.104 kg rock is attached to a 1.92 m long string and swung in a horizontal circle at a speed of 29.7 m/s. Find the tension in the string. Neglect the effect of gravity.
*October 31, 2012*

**physics**

A wagon is pulled by a handle making an upward angle of 25° with a force of 25 N. What is the horizontal force pulling the wagon foward? What is the force lifting the wagon off the road?
*October 31, 2012*

**Physics **

A student pushes stright along the handles of a mower with a force of 200 N. The handles make a angle of 20°, with respect to the horizontal. The frictional force for the 25 kg mower is 100 N. What is the normal force on the mower, and what is the acceleration of the mower?
*October 31, 2012*

**Thermodynamics**

Design Problem- A steam boiler may be thought of as a heat exchanger. The combustion gases may be modeled as a streram of air because their thermodynamic properties are close to those of air. Using this model, consider a boiler that is to convert saturated liquid water at 500 ...
*October 31, 2012*

**Thermodynamics**

Design Problem- A steam boiler may be thought of as a heat exchanger. The combustion gases may be modeled as a streram of air because their thermodynamic properties are close to those of air. Using this model, consider a boiler that is to convert saturated liquid water at 500 ...
*October 31, 2012*

**english**

what is the order of imortance? whoever answers this gets to meet my mom the mayor!!!!!!!!!!!!!!!!!!!!
*October 23, 2012*

**Physics**

A m1 = 4.20-kg block on a smooth tabletop is attached by a string to a hanging block of mass m2 = 2.70 kg, as shown in the figure. The blocks are released from rest and allowed to move freely. a) Find the acceleration of the blocks. ___m/s^2 b) Find the tension in the string. ...
*October 16, 2012*

**Physics**

When you take your 1300-kg car out for a spin, you go around a corner of radius 57.8 m with a speed of 15.2 m/s. The coefficient of static friction between the car and the road is 0.82. Assuming your car doesn't skid, what is the force exerted on it by static friction? ...
*October 16, 2012*

**English-Ms. Sue please**

IDK
*October 11, 2012*

**Math**

Yep
*October 1, 2012*

**science**

Why might a seed that falls on the ground in November wait until next April to germinate?
*September 27, 2012*

**Biology (PLZ HELP)**

Researchers discovered that zooplankton in Narragansett Bay now graze on floating algae more actively through the winter than they ever did before. What effect do you think this might have on the annual late-winter "bloom" of algae that occurs in the water?
*September 25, 2012*

**Math 8R - Help!!!!!!!!**

1/2+1/2+1/2+1/2+1/2+1/2+1/2= 3 1/2 The answer is 7.
*September 25, 2012*

**Biology**

Researchers discovered that zooplankton in Narragansett Bay now graze on floating algae more actively through the winter than they ever did before. What effect do you think this might have on the annual late-winter "bloom" of algae that occurs in the water?
*September 25, 2012*

**Biology**

How are decomposers like a city's recycling center?
*September 25, 2012*

**math**

In a study of the change of insect population,there was about 170 insects four weeks after the study began and about 320 after two more weeks. Assume an exponential model of growth. a.Find an equation relation the population to the time in weeks. b.estimate initial number of ...
*September 24, 2012*

**Physics**

At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.1 m until, at t = 1.52 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. (b) Find the change in its ...
*September 23, 2012*

**Physics**

Tricky little problem makers. You don't need the coefficients after all. I got it!
*September 23, 2012*

**Physics**

A crate of potatoes of mass 23.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.78 and μk = 0.35. Find the frictional force (magnitude and direction) on the crate if the crate is at rest. I don't ...
*September 23, 2012*

**chemistry**

When 47.5J of heat are added to 13.2 g of liquid, its temperature rises by 1.72 degrees C. What is the heat capacity of the liquid? A cook wants to heat 1.35kg of water from 32.0 degrees C to 100 degrees C. If he uses combustion of natural gas to heat the water, hou much ...
*September 21, 2012*

**chemitry**

A block of aluminum with a volume of 98.5 cm3 absorbs 67.4 J of heat. If its initial temperature was 32.5°C, what is its final temperature? (density of aluminum = 2.70g/cm3)
*September 21, 2012*

**science**

answer is 269.8m or 270 in significant figures if you are curious.
*September 14, 2012*

**science**

A 49 kg person drinks 270. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 16% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake? [Hint: The work done in ascending ...
*September 14, 2012*

**Algebra**

Wow chase, a, b, c, d. Very creative. It's not that.
*September 12, 2012*

**College Physics**

7.1 m/s *if only using 2 sig. figs. actual answer = 7.06666667
*August 26, 2012*

**PLEASE HELP CHEM DR BOB :O**

Sort the pairs of related compounds by their carbonyl stretching frequencies in cm–1. (There will be three compounds per bin.) Bin # 1: Slightly higher Bin #2: Slightly lower Compounds: -butanol -but-2-enal -heptan-3-one -hept-4-en-3-one -cinnamaldehyde -3 phenylpropanal
*August 26, 2012*

**Dr. Bob please help :)**

Sort the pairs of related compounds by their carbonyl stretching frequencies in cm–1. (There will be three compounds per bin.) Bin # 1: Slightly higher Bin #2: Slightly lower Compounds: -butanol -but-2-enal -heptan-3-one -hept-4-en-3-one -cinnamaldehyde -3 phenylpropanal
*August 25, 2012*

**Chem**

Sort the pairs of related compounds by their carbonyl stretching frequencies in cm–1. (There will be three compounds per bin.) Bin # 1: Slightly higher Bin #2: Slightly lower Compounds: -butanol -but-2-enal -heptan-3-one -hept-4-en-3-one -cinnamaldehyde -3 phenylpropanal
*August 25, 2012*

**7th grade math **

solve for k -4k-8k+7=-53 Please explain how you found your answer!! Please help!!
*August 8, 2012*

**measurments**

To Ms. sue sorry late reply, no its just a typo but i still need help
*August 7, 2012*

**measurments**

which has the least value? 3130 L+38126 cl+ 3403 ml 394 kl+ 1425 Kl+ 490L please show work!
*August 7, 2012*

**7th grade math**

nevermind i figured it out
*July 26, 2012*

**7th grade math**

1. Substitute: Ms.Kubagwa is six years younger than Ms. Vea. The sum of there ages is 52 years. I HAVE NO CLUE WHAT TO DO HERE!! 2.Ms.starbrowski has four more pens than Mr.Dukeman. Together they have 34 pens. How many pens does Ms.Starbrowski have? *Please explain how you ...
*July 26, 2012*

**Math**

a farmer wants to fence in part of her land so that her chickens will have thier own little area. if she only has 28 feet of fence, what is the area of the largest pen that she can build?
*June 7, 2012*

**Social Studies**

the answer is not oregon because i got it wrong on my test...
*May 31, 2012*

**physics ( DENSITY )**

Assume that the density of a human is 1.13 g/cm3. What is the volume of a 51.5 kg person?
*May 31, 2012*

**Algebra 1A**

The temp dropped 17 degrees. What you do to solve it is 0-17. Though it's already a negative 17 so the equation would look like this: 0-(-17)=17. So the temp has dropped 17 degrees.
*May 20, 2012*

**chemistry**

A bond between two sugar molecules is formed by which of the following types of reactions? oxidation-reduction condensation single-replacement double-replacement
*May 16, 2012*

**statistics**

you have requirement that men must be at least 74 in tall and women must be at least 70 in tall. the men height is 69 in +/-2.8 and women mean height is 63.6 +/-2.5. If the requirement s changed so that the tallest 4% of men and women are eligible, what would be the new ...
*May 14, 2012*

**Math**

24 inches is perimeter but what about the ratio (its been a long time since we went over this in school and I have forgoten a lot)
*April 9, 2012*

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