# Posts by ellie

Total # Posts: 348

Physics
Two 30kg children in a 20 kg cart are stationary at the top of a hill. They start rolling down the 80m tall hill and they are traveling at 30 km h-1 when they reach the bottom. (The cart had brakes!) How much work was done on the cart by friction during its travel down the ...

health
I would say sedentary lifestyle, diet, smoking, drinking, genetics are all challenges to over coming health and wellness. To overcome these you must change your habits, your lifestyle, the food that you eat and the amount of exercise that you do. This is a short version but ...

Math
What is the value of x when the line crosses the x-axis?

Math
The length of the shortest piece is 4.2ft.

math

Religion
i need to write an essay about if anne frank's life is relevant to teenager's today. Please hele me!!

English/History
In Maus, what 3 times does Vladek almost die, but is saved? I feel like there are a ton of times he could have dies (being in the concentration camps alone is life-threatening enough), but I'm not sure what specific times Vladek was really close to death, but was saved? If...

science

science
John folded a wet washcloth in four. Mary spreads hers out. Which washcloth dried the quickest???And please explain.

World History
For a project I'm doing for world history, I have to include 2 "VIP's" for Winston Churchill. Does anyone know of a person who contributed to Churchill's fame or someone who was important to Churchill that I could research to include as one of my VIP'...

Science
help me!!!!

Science
what are two things that you must know to determine speed?

Science
I have that problem and I am solving it and so far I got the amplitude which is 0.2

english 4
Sandy's throw to first base was short. what is the subject and verb etc..

chemistry - science
molarity=moles of solute/volume of whole solution in litres so the mass of Na/molar mass of NaOH all divided by .250Litres 4g/40g divided by .250 litres is .4 M. The answer is .4

chemisty
idk

french
sorry i did not see the one that you have already corrected so i reuploaded it thank you for correcting it

french
for my homework we had to write a paragraph on what we do to help out around the house could you please let me know if there are grammar or spelling mistakes and tell me where i made mistakes and what i should have said instead Pour aider autour de la maison je décharge...

french
for my homework we had to write a paragraph on what we do to help out around the house could you please let me know if there are grammar or spelling mistakes Pour aider autour de la maison décharger le lave-vaisselle quand il doit être fait et j'ai aussi aider...

Physics
A bullet of mass 4.8 g strikes a ballistic pendulum of mass 3.3 kg. The center of mass of the pendulum rises a vertical distance of 9.7 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed. ....I'm getting an answer of ...

french
Hello i made all the corrections you told me too how does this look :) please tell me if there are any morre grammar or spelling mistakes Bonjour, Mathilde Je m’appelle Ellie. J’ai quatorze ans et mon anniverse c’est le sept juillet. J’ai les cheveux longs ...

french
I am Ellie but Ruth is my friend and is in my class for french so we are doing the same work thank you

french
thank you so much for taking so much time into helping me perfect my french essay I have done the corrections you have told me to do and I was wondering if you could go through and make sure the lanuage and grammar are all perfect. And thank you I really appricate it Also, how...

Biology
My teacher asked me this question and I do not know the answer would you be able to tell me and why thank you large bodies loose a smaller percentage of heat to their surroundings than smaller bodies. Why?

french
My homework task is to write an introductory email to my french exchange partener about:yourself, how you get on with your family, what your views on marriage are, a descrition of your best friend(s), what you did yesterday and what your plans for the weekend are? I have ...

French
My homework task is to write an introductory email to my french exchange partener about:yourself, how you get on with your family, what your views on marriage are, a descrition of your best friend(s), what you did yesterday and what your plans for the weekend are? I have ...

French
My homework task is to write an introductory email to my french exchange partener about:yourself, how you get on with your family, what your views on marriage are, a descrition of your best friend(s), what you did yesterday and what your plans for the weekend are? I have ...

physics
Water from a garden hose that is pointed 21° above the horizontal lands directly on a sunbather lying on the ground 4.3 m away in the horizontal direction. If the hose is held 1.4 m above the ground, at what speed does the water leave the nozzle?

NO. it is 269,817, 245, and 821....

science
hi im eleven and i know nothing about acids and alkalis so plz help it sez nothing here about them...

Pre-Calc
The 30fd was under the square root sign-thank you

Chemistry
Given the following heats of combustion. CH3OH(l) + 3/2 O2(g) CO2(g) + 2 H2O(l) ΔH°rxn = -726.4 kJ C(graphite) + O2(g) CO2(g) ΔH°rxn = -393.5 kJ H2(g) + 1/2 O2(g) H2O(l) ΔH°rxn = -285.8 kJ Calculate the enthalpy of formation of methanol (CH3OH) from ...

chemistry
It says that answer is off by a multiple of ten.

chemistry
A 51 kg person drinks 330. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 18% 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 is...

Pre-Calc
Please check answer and help with one of them: 1. check please car in an accident speed of car is the s, d is length of skid=30 feet f is coefficient=0.5 use formula to find s=sqaure root of 30*f*d My answer is 21.21 because I took square root of 30(0.5)(30) 2. this one is ...

Algebra
How many terms are in this sum? 5x-6a+8

Accounting
40,000 / end of year 130,000

English
Thank you Ms. Sue In continuing with the medium question twitter I say I like Paris but email to my boss I like Paris because of the food and scenery. College formal essay I go into depth of why I like Paris. Is that difference?

English
How does the medium in which you are communicating your message influence your writing and editing styles? I think it means medium of writing is what type of writing the person is doing. But I am not sure help please :-) I am a little confused.

calculus
A police car is driving northward, chasing a vehicle which has just taken a right turn at an intersection, and is travelling due west. When the police car is 600 yards south of the intersection, and the car is 800 yards east of the intersection, an aerial speed radar indicates...

music
which one of the following pieces of music would you most expect to be played by a full orchestra

Thank you-

I think I figured it out. It would be Tengo ganas de estudiar. Tengo ganas de correr Tengo ganas de tocar la fluta.

I have to write a sentence saying that I feel like doing some activity say playing baseball of football-it doesn't matter. We are suppose to use the tener form so I'm really confused. Thanks for helping. I thought it would Me gustaria(accent over i) jugar whatever but ...

Physics-Help-I'm Stuck
Thanks for confirming it

I totally forgot about that formula-so then the magnitude would be decreased by a factor of 1/2 raised to the second power- would it be 1/4 or .25

Physics-Help-I'm Stuck
If a balloon is made of Mylar(alumized plastic) instead of rubber, would it stick to a wall if you rubbed the balloon against a wool sweater? If a charged balloon is held a distance "d" above some paper bits they start to move. If the balloon is moved half as close, ...

algebra
199 miles

algebra
20 miles

biology 101
describe ecosystem of temperate rain forest population growth and regulation through community interactions

reserch
Iwould assume color of skin and hair ,sun reacts to darkness-hair is dark suns attracted -if there was heat no sun id remove all hair

math
Decide whether the pair of lines is parallel, perpendicular or neither: 2x+3y=3 2x+3y=10

Physics
Thanks you so much! I just saw that there was a part two in which it says, "what does it sound like when you hear his sentence?" He said, "Hey! Finish your test!" I don't know how to answer this...?

Physics
Superman is a character from the DC Comics universe with superhuman abilities. One day in the city of Metropolis you look to the skies only to see Superman passing directly over your head as he races to save Lois Lane from some imminent threat. Not in too much of a rush, ...

Thank you for all your help-I realy appreciate it

Sorry I sent it with my sister's name-she was asking something earlier Sorry about the confusion

I have a question about how to answer this If something is dulce, one would probably want to drink lemonade or a sour drink with it. I know dulce is sweet in Spanish but I don't get the correlation-or is it if you eat something sweet, you want to offset it with something ...

chemistry
What's the particle diagram of Carbon monoxide? Thank you

science
Are there articles about guinea pig and hamster speed through a maze?

Math
on july 16, 1882, a massive thunderstorm over Dubuque, Iowa, produced huge hailstones. The diameter of some of the hailstones was 17 in. ICe weighs about 0.033 lb/in^3;. Whas is the approximate weightof a 17 in. hailstone?

math
how to solve logarithms symbolically? log17(17)^(x+3)= log7(1) thank you

Math
Jack is standing next to a monument in the city square. His shadow is 18 feet long. The shadow of the monument is 150 feet long. If Jack is 6 feet tall, how tall is the monument

chemistry
what is the standard enthalpy formation of liquid diethylamine (CH3CH2)2 NH? N2O5(g) + 8CH4(g) ==> 2(CH3CH2)2NH(l) +5H2O(l), delta H= -1103kJ

chemistry
a 47.7L sample of a gaseous hydrocarbon, measured at 1.00atm and 25degreesC is burned in excess oxygen, liberating 4.33X10^3 kJ of heat at a constant pressure. what is the identity of the hydrocarbon?

chemistry
a 3.35g sample of solid silver reacted in excess chlorine gass to give a 4.45g sample of pure solid AgCl. the heat given off was 3.95kJ at constant pressure. what is th enthalpy of formation of AgCl?

chemistry
the molar mass of an unknown gas was measured by an effusion experiment. it took 63s for te gas to effuse. where as nitrogen gas took 48sec. what is the molar mass of the gas? 32g/mol 37g/mol 24g/mol 16g/mol 48g/mol

chemistry
what is the oxidizing agent in the equation 8H(aq)+ 6Cl(aq)+ Sn(s)+ 4NO3(aq)yields SnCl6(aq)+ 4NO2(g)+ 4H2O

Chemistry
A precipitate will be formed when an aqueous carbonic acid soution is added to what other aqueous solution? A. ammonium chloride B. calcium hydroxide C. Sodium Chloride D. Potassium carbonate E. Nitrous acid

Chemistry
yes but is SeO3 Soluble? i do not know if it can break apart, it is not on the chart

Chemistry
what is the net ionic equation for NaOH + H2SeO3?

Geometry cheak
Decide whether the pair of lines is parallel, perpendicular or neither: 2x+3y=3 2x+3y=10

physical geography
Regarding to the adiabatic Process.. Why is there a DRY ADIABATIC RATE and a SATURATED ADIABATIC RATE?

physical science08

History
important enough for us to have freedom of speech... as if we the citizens wouldnt of have approved the constitution we would probably be governed under one government; no different political parties, we would do as we are told so from thee great ruler; the president

physical geography
why doea a rising parcel of unsaturated air cool more rapidly than a rising parcel of saturated air??

spanish
1. partido 2. campo 3. recive... mete

spanish
yo ago mi tarea en clase

Chemistry
In a run involving 1.00 mL 2.50 * 10^-3 FE and 1.00 mL of 2.50 * 10^-3 SCN solutions made up to a total volume of 10.0 mL, the concentration of complex formed at equilibrium was found to be 4.44 * 10^-5. What are the equilibrium concentrations of Fe^3+ and SCN^-? I tried m1v1=...

Science
Explaining how ear defenders work using the big idea of energy transfer?

physics
10^5 V/m

deopends me habla un amigo(guy friend) me habla una amiga(female friend) me habla mi mama(mother) me habla mi papa(father) depends

you mean "quien te abla por telefono todo los dias?

History
i have the same assignment and pretty much the same answer :)+

Physics
anyone????

Physics
Useful Constants: 1 Torr = 133.32 Pa; R = 8.3145 J/mol·K You have a thin metal sphere of unknown volume that contains helium gas at low pressure. You put the entire metal sphere into a bath of liquid nitrogen, and a pressure gauge on the sphere indicates a pressure of ...

maths
is the following a function and if so is it inective, surjective or bijective: f: R-->R where f(x)=|x|

Ap Physics
it basically two tubes connected with a line, one to 10 cc has a weight put on top of it the second one 50cc has a force probe put on top of it. the weight changes force in first and causes the force and pressure in second to change. it basically using Pascal's Principal.

Ap Physics
Read the activity 2-1:Force and Pressure in the lab manual (pages 167-168). As described in the manual, consider a 10 cc syringe is connected to a 50 cc syringe. Information of the syringes are as follows: (mass of 10 cc piston) = 16 g (mass of 50 cc piston) = 60.6 g (diameter...

Physics
should not F2=F1*A2/A so F2=646.8*(615.752/169.71) F2=2346.759

Physics
i tried 646.8/169.71=F2/615.752 and tried solving for F but i am getting 2346.759 and it just not right..

Physics
So since i know F/A=F/A I'm just confused on how it affects one another....

Physics
ok so. I solved first part with F/A i got .9239 kPa. second part i solved to i just added the forces. I got 3.811 kPa. The last two i am having difficulty with....

Physics
Read the activity 2-1:Force and Pressure in the lab manual (pages 167-168). As described in the manual, consider a 10 cc syringe is connected to a 50 cc syringe. Information of the syringes are as follows: (mass of 10 cc piston) = 16 g (mass of 50 cc piston) = 60.6 g (diameter...

Help Physics 1 question
i tried .0003493 and -.0003493 but both are wrong where am i messing up exactly?

Help Physics 1 question
Period=1.4 seconds gravitational acceleration=9.8 m/s^2 length of string=.4865m angle is 3 degrees acceleration from that angle is=.5129 m/s^2 change in bobs height from release to bottom of arc=.000667m bobs speed at bottom of arc=.1143 m/s so i done all the questions and ...

Math
u=-3 45/-15

Physics
b i got a=gsin(3)=.5129

Physics
You want to make an old-fashioned pendulum clock, with a period of exactly 1.4 second(s). Use the Earth's gravitational acceleration g = 9.8 m/s2. a) Ignoring the size of the pendulum bob, from what length wire should you hang your pendulum bob? .4865 m b) If you release ...

physics
0.061

Physics
The moment of inertia of an object depends on the shape of the object, location and orientation of the axis of rotation. For a solid disk, when the disk is rotating about an axis that is perpendicular to the disk and passing through the center of the disk, the moment of ...

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