Jeanne

I am doing a extra credit project for social studies. Does anyone have any ideas for the project for the preamble of the u.s. constitution. I need to be able to do it in 1 week Let's look at the Preamble -- "We the People of the United States, in Order to...

18 years ago

How do you diffirentiate between a sample of iron and a sample of iron sulfur by means of a chemical test

16 years ago

How do you separate a mixture of iron and sulphur by means of a phsyical test without using a method

16 years ago

[3-7(1-8)] parentheses first 1-8= -7 -7*-7= 49 3-49= -46 am I correct?

15 years ago

For the "ISOLATION OF CHLOROPHYLL AND CAROTENOID PIGMENTS FROM SPINACH" Lab we have to think about how we can correct the following if they were to occur: a.) When a two-component mixture containing 1-ocetone and 1,4-dimethylbenzene gave only one spot wit...

14 years ago

How do we correct the problem if during TLC development the solvent ran off the plate?

14 years ago

A sample of hexane and octane is injected into a gas chromatograph equipped with a nonpolar column. Predict which one will have the shorter retention time.

14 years ago

An object that floats in water has ___________ in water?

14 years ago

A box with a mass of 7.00 kg is at rest on a ramp that is at an angle of 20 degrees with the horizontal. The coefficient of static friction between the box and the ramp is 0.800. Use g = 9.80 m/s2. You now want to make the box move by applying a force. To...

14 years ago

A box, with a weight of mg = 25 N, is placed at the top of a ramp and released from rest. The ramp measures 4.40 meters horizontally and 3.50 meters vertically. The box accelerates down the incline, attaining a kinetic energy at the bottom of the ramp of...

13 years ago

In this problem, use g = 9.80 m/s2. Bizarro, located at Six Flags New England, in Agawam, MA, is the name of one of the top-rated roller coasters in the country. The first drop on the roller coaster brings you down 67 meters. There are some resistive forc...

13 years ago

Mr. Garcia is going to pain a mural on one wall. There is a rectangular shaped window that is 24 in. wide and 36 in. high on the wall. How many square feet of the wall will be painted?

13 years ago

How many grams of CuSO4 are there in 219 grams of an aqueous solution that is 20.2% by weight CuSO4

13 years ago

The concentration of hydroxide ions in the antacid, milk of magnesia, is 5.2x10^-4 M. Calculate the concentration of hydronium ions at 25 degrees celcius.

12 years ago

What is the mole ratio between all compounds of this reaction:HC2H3O2 + NaHCO3 = NaC2H3O2 + H2O + CO2

12 years ago

A rubber ball is dropped from height h. It bounces 27" (60%). Write an equation you can use to find height h

11 years ago

How many moles of Ca(NO3)2 contain 2.95 x 10^24 oxygen atoms? I set up the conversions like this: 2.95 x 10^24 / 6.022 x 10^23 to get # of moles Oxygen. Then, I divided that answer by 8, the ratio of oxygen needed to 'make' one unit of calcium nitrite. I...

6 years ago

Hi there Please please help me. I'm a mom trying to find the answer for my child. Do not have intenet at home and have been to the library for 3 hours and one th internet at work for 5 hours and still cannot find an answer. I stumbled across the website b...

16 years ago

Thanks sooo much!!!

14 years ago

Can you explain what Hx'+Fgx'=uS(Fgy'-Hy') means? It's hard to elaborate when the variables aren't defined.

14 years ago

same for Fgx'=uS(Fgy'-P)

14 years ago

Yeah I got that, but I was hoping you could explain what you defined as the x' and y' component of each like in terms of cos and sin seeing that we might not be on the same page so i cant check ur answers exactly if i use something different.

14 years ago

thus you assume Fgx' is mgcos20 and Fgy' is mgsin 20?

14 years ago

okay, just making sure

14 years ago

I am trying your equation from for P. I have a feeling it will come out as a negative force and if you apply a perpendicular force it will only increase the contact force and thus not move the box, but let me see.

14 years ago

Yes, your equation is right so if you just plug in your given numbers for P=mgcos20-(mgsin20/uS) you should get the correct answer.

14 years ago

yeahh

14 years ago

I know the work done is W = ì X mgcosè X d and W is Ui+ W= Kf which is 54-(25*3.3)=-33.5 so W = ì X mgcosè X d and so ì= (W/(mgcosè X d)) and mg=25N so what is cosè? and i think d is the hypotenuse?

13 years ago

im sorry it should be cos theta for all of them

13 years ago

and the "i" looking thing is the coefficient of friction

13 years ago

Ohh I see! Thanks a lot!

13 years ago

OK, so lets call the numerator n. The denominator is 7 more than twice the numerator. Put into an equation, it would look like this. n/2n+7 You add 7 to both, and it will look like this: n+7/2n+14 You should be able to solve from here. Cheers! Jeanne

9 years ago

So, lets call this numerator n. If written into a fraction, it wold look something like this. n/n+2 You add one to both n+1/n+3 You should be able to solve from here Cheers. Jeanne

9 years ago