Wednesday
February 10, 2016

# Posts by sophie

Total # Posts: 425

Calculus
The problem I have is a summation from 1 to infinity for (-1)^n/n. I have to find a partial sum that is in 0.001 of the infinite sum, my teacher says the fourth partial sum approximates the infinite sum, which is -7/12. I think to get within 0.001 of the infinite sum, do I ...
May 5, 2009

french
merci!
May 4, 2009

french
Le train arrive et les voyageurs montent _____. a. sur la voie b. en voiture c. devant la gare d. au kiosque I know it isn't d.... not sure though! Le train arrive Presque toujours _____. a. en retard b. a l'heure c. le matin d. l'horaire is it b....?
May 4, 2009

French
Je descends _____. a. au kiosque b despuis 45 minutes c. au prochain arrete d. a la boucherie I think it is c or b?
May 4, 2009

french
merci!
May 4, 2009

french
Choose the correct noun that matches the stated verb below. Choisir a. la fin b. un choix c. la vue d. un atterrissage Is it b? Voir a. la fin b. un choix c. la vue d. une croyance Is it C?
May 4, 2009

French 1
yes very true! Merci!
May 4, 2009

French 1
So 1 is A and 2 is A?
May 4, 2009

French 1
C'est _____ voie? a. quelle b. quelles c. quel d. quele Is it C? Tu voyages avec ______ compagnie aerienne? a. quelle b. quelles c. quel d. quele Is it B?
May 4, 2009

French 1
merci beaucoup!
May 3, 2009

French 1
Ils regardent les vetements pour hommes dans ______ de la boutique. a. la caisse b. les soldes c. al vitrine d. au rayon I am thinking that it is c or b??? La Martinique est dans la mer _____ Antilles. a. de b. des c. de l' d. de la is it b?
May 3, 2009

Chemistry
I need help with the following problem: A fabric remnant from a burial site had a 14 C:12 C ratio of 0.838 of the original value. How old is the fabric? (half-life of 14 C = 5370 years)
April 29, 2009

English- Medieval Period
this was the only one I missed. Thanks for all help though! It was C. loyalty.
April 23, 2009

English- Medieval Period
it should say all of the above for D So it is D then?
April 23, 2009

English- Medieval Period
This refers to Sir Gawain and the Green Knight Gawain's actions at the castle reveal that the knight's moral code values: a. strength b. courage c. loyalty d. NONE OF THE ABOVE I put B, I am not sure though.... ???
April 23, 2009

APA is most common to use. For help you can go to easybib. com
April 22, 2009

Physics
A beam of unknown charged particles passes at right angles to the direction of magnetic field of 9.0x10^-2 T. If the speed of the particles is 3.0 x10^4m/s and the force experienced is 8.64x10^-16N, how many electric charges are carried by one particle? my Work: F = qvB q = F/...
April 22, 2009

Physics
yes, 0.45 T thanks for checking!
April 22, 2009

Physics
A current-carrying wire is oriented at right angles to a uniform magnetic field. If the length of the wire is 0.50 m and it experiences a force of 0.90 N while carrying a current of 4.0 A, what is the strength of the magnetic field? I did the work and got: 0.45 ...???
April 22, 2009

physics
thought so, thanks
April 13, 2009

physics
There are four coils of wire being used as electromagnets. They all have the same size and are made up of the same material but have a different number of loops. Which coil will produce a magnetic field with the maximum strength when the same amount of current passes through ...
April 13, 2009

Physics
there are four right hand rules, I will re-read it so the second one is b thanks
April 13, 2009

Physics
The polarity of an electromagnet can be determined using the second right-hand rule. A. True B. False Is it B? Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor. A. True B. False Is ...
April 13, 2009

Physics!!!
When does a magnetic field induce maximum EMF in a wire moving with a constant velocity? A. When the wire is moved at an angle of 60 degrees to the direction of the magnetic field B. When the wire is moved at right angles to the magnetic field C, When the wire is moved ...
April 12, 2009

physics
When does a magnetic field induce maximum EMF in a wire moving with a constant velocity? A. When the wire is moved at an angle of 60 degrees to the direction of the magnetic field B. When the wire is moved at right angles to the magnetic field C, When the wire is moved ...
April 12, 2009

Physics!!
thanks
April 12, 2009

Physics!!
An electromagnetic wave is produced by: A. an accelerating charged particle or changing magnetic fields B. an accelerating uncharged particle and changing magnetic fields C. a stationary charged particle and a magnetic field D. any moving particle and a magnetic field I think ...
April 12, 2009

Physics
An electromagnetic wave has a wavelength of 6.2 x 10^14 m. What is the frequency of the wave? A. 2.0 x 10^6 Hz B. 4.8 x 10^-7 Hz C. 1.8 x 10^24 Hz D. 5.3 x 10^-22 Hz I got B..? When the currents in two parallel metal conductors are in the same direction, the conductors ____ ...
April 11, 2009

Physics
The polarity of an electromagnetic can be determined using the second right-hand rule. A. True B. False Is it false? Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor. A. True B. ...
April 11, 2009

PHYSICS
I know, it's annoying.... I'm just putting A..
April 8, 2009

PHYSICS
When a conducting sphere is charged positively, initially the charge is deposited on the left side. However, due to the sphere's conducting nature, the charge spreads uniformly throughout the surface to the sphere. Charge is uniformly distributed because: A. charged atoms ...
April 8, 2009

physics
okay so it's A, A
April 7, 2009

physics
so 1-a 2- b
April 7, 2009

physics
In a series current, each circuit has the same: A. current B. voltage C. capacitance D. resistance If a resistor is added to a series circuit, the equivalent resistance: A. increases B. decreases C. remains the same D. becomes zero
April 7, 2009

April 7, 2009

physics
I know, I think they left out words or something... I'm just going to put C...
April 7, 2009

physics
A 15.0 resistor and a 20.0 resistor are connected in parallel. A 5.00 resistor is connected across a 1.00 10^2-V battery. What is the current flowing through the 20.0 resistor? A. 1.21 A B. 3.15 A C. 5.00 A D. 6.84 A I don't think it's C....
April 7, 2009

physics
When two bodies are charged, the total charge before and after charging remains the same because of: A. quantization of charges B. conservation of charges C. law of induction D. Coulomb's law it is B? When a conducting sphere is charged positively, intially the charge is ...
April 7, 2009

physics
okay so it is B. positively charged that's a neat website
April 7, 2009

physics
A negatively charged balloon sticks to a wooden door. However, an uncharged balloon does not stick to a wooden door. What is the nature of the charge on the wooden door? A. Electrically neutral B. Positively charged C. Conductor D. Lacking protons I am thinking it is A or B?
April 7, 2009

Physics
thought so, thanks
April 7, 2009

Physics
Which of the following statements is true about electric forces? A. Electric forces cause objects to only attract each other. B. Electric forces cause objects to only repel each other. C. Electric forces cause objects to repel or attract each other. D. Electric forces have no ...
April 7, 2009

french
to have
April 7, 2009

you would subtract 8-2 which equals 6. this would give you 6/8 which is 3/4
April 7, 2009

psychology
The second one is correct. I am not sure about the first one though.
April 7, 2009

A beam of light passes from air to ethanol, with index of refraction of 1.36. If the angle of incidence ( 1) is 30.0 degrees, then calculate the angle of refraction, after light passes through ethanol and enters into air. A. 15.3 degrees B. 21.6 degrees C. 30.0 degrees D. 39.8...
April 6, 2009

physics...
Light passes from air into water at 45.0 degrees to the normal. If the index of refraction of water is 1.33, find the angle of refraction. A. 25.5 degrees B. 32.1 degrees C. 44.0 degrees D. 55.9 degrees I believe it is B? What is the nature of an image formed by a concave ...
April 6, 2009

Check for mistakes plz
no problem (:
April 6, 2009

Check for mistakes plz
In the last sentence, you might want to change it to: The permafrost allows only small bushes to grow. I don't know, something like that. It shouldn't start with "because" though. The rest of it is great!
April 6, 2009

science
photosynthesis... so A
April 6, 2009

Physics...help!
Light passes from air into water at 45.0 degrees to the normal. If the index of refraction of water is 1.33, find the angle of refraction. A. 25.5 degrees B. 32.1 degrees C. 44.0 degrees D. 55.9 degrees I believe it is B? What is the nature of an image formed by a concave ...
April 6, 2009

Physics
it isn't C or D, it's A..
April 6, 2009

Physics
A 5.0 cm real object is placed at a distance of 5.0 cm from a concave mirror of focal length 10 cm. Find the size of the image. A. 5 cm B. 10 cm C. 17 cm D. 20 cm I think it is B? A(n) _______ lens is used to produce a real image. A. convex B. concave C. plane D. diverging Is ...
April 6, 2009

physics
Q=mC(Tf-Ti) heat transfer is equal to the mass of an object time the specific heat of the object times the difference between the final and initial temperatures.
April 6, 2009

physics
A 5.0-cm real object is placed at a distance of 30.0 cm from a concave mirror of focal length 10.0 cm. Find the location of the image. A. 6 cm B. 10 cm C. 15 cm D. 60 cm Is it B. 10 cm? Which of the following objects can set fire to a piece of paper in the presence of sunlight...
April 6, 2009

physics: true or false
yeah, so it is false
April 6, 2009

physics: true or false
A concave mirror of focal length 10 cm forms an upright and diminished image of a real object placed at a distance of 5 cm from the mirror. A. True B. False A convex lens is used to obtain an enlarged virtual image. A. True B. False Not too sure on the first one... the second ...
April 6, 2009

Physics: true or false
A convex mirror forms a virtual, diminished, and upright image for all real objects regardless of the location of the object. A. True B. False Is it true? A convex mirror of focal length 10 cm forms an upright and magnified image of a real object places at a distance of 20 cm ...
April 5, 2009

Physics
What must be the minimum height of a plane mirror so that a boy of height 162 cm can view himself from head to toe? A. 40.5 cm B. 81 cm C. 162 cm D. 324 cm It would be B. 81 cm?
April 5, 2009

physics! help!
nevermind it was B
April 4, 2009

physics! help!
For incomplete cancellation to occur, opposite pulses must have A. equal amplitudes B. different energies C. equal pulses D. equal displacements is it B??
April 4, 2009

Physics!!
thanks!
April 4, 2009

Physics!!
A car moving at 16.0 m/s, passes an observer while its horn is pressed. Find the difference between the frequencies of sound heard when the car approaches and when it recedes from the stationary observer. The velocity of sound is 343 m/s and the frequency of the sound of the ...
April 4, 2009

physics
thanks
April 4, 2009

physics
Shaking a towel up and down would create what type of wave in the towel? A. Transverse <---answer (I think) B. longitudinal C. surface For the medium to remain undisturbed as two pulses pass the same point, they must have A. equal amplitudes B. opposite amplitudes C. ...
April 4, 2009

Physics: true or false
Doubling the amplitude of a wave will double the amount of energy the wave can transfer. A. True B. False <---answer (not sure) The medium determines the speed through which most mechanical waves will travel. A. True <---answer (not sure) B. False
April 4, 2009

Geometry
a- 176 is the mean not sure on the rest, sorry
April 4, 2009

Physics: waves
You are creating a transverse wave in a rope by shaking your hand from side to side. Without changing the distance that your hand moves, you begin to shake it slower and slower. What happens to the frequency? What happens to the amplitude? What happens to the wavelength? A. it...
April 3, 2009

science
no problem! (:
April 3, 2009

science
Disonformity is a type of uncomformity so I don't think so
April 3, 2009

science
they are similar and can be compared
April 3, 2009

math
Oops, I messed up on the math.... haha! I meant, 9/16
April 3, 2009

math
For example, 3/4 divided by 4/3 you would flip 4/3 to 3/4 and multiply them, so it would be: 3/4 times 3/4 = 9/36 or 1/4
April 3, 2009

physics
carol and bruno drag a box of mass 58.0 kg along a frictionless floor. Carol pushes the box with a force of 11.4 N at an angle of 40.0 downward from the horizontal. Bruno pulls the box from the other side with a force of 11.0 N at an angle of 40.0 above the horizontal. What is...
April 3, 2009

Physics
The melting point of a solid is 90.0 degrees C. What is the heat required to change 2.5 of this solid at 40.0 degrees C to a liquid? The specific heat of the solid is 390 J/kg (K) and its heat of fusion is 4000 J/kg. A. 4.9 10^4 J B. 1.0 10^4 J C. 5.9 10^4 J D. 5.0 10^4 J I am...
April 3, 2009

math
28(.30) \$8.40 is the discount and you subtract this from \$28 so, it will cost the employee \$19.60.
April 3, 2009

Physics help!
I found the answer, never mind
April 3, 2009

Physics help!
Heat is added to an open container of a liquid. The liquid is brought to its boiling point and half the liquid boils away. Which of the following graphs shows how the temperature changes with this time period? Would the graph be just an ascending line?
April 3, 2009

yes, you are correct. B makes sense more than the others.
April 3, 2009

Physics help!
The thermal energy of the particles in a gas is related to the temperature of the gas. A. True B. False This question is a bit tricky, but I think it is true?
April 3, 2009

catering
I would say C, because it's an outing but I'm not sure.
April 3, 2009

Physics: true or false
That is true, it is not only kinetic energy
April 3, 2009

Physics: true or false
1. In a gas kept at a constant temperature, all molecules move with the same speed. A. True B. False 2. A hot object has more thermal energy than a similar cold object only because of greater kinetic energy. A. True B. False 3. The thermal energy of the particles in a gas is ...
April 3, 2009

x^2-10=0 x^2=10 (add 10 to both sides) x= 3.16 (square root of 10)
April 3, 2009

You're right, A is not a complete sentence.
April 3, 2009

Physics
It has to be one answer though... thanks anyways (:
April 3, 2009

Physics
Which of the following physical properties can be used to measure temperature using a thermometer? A. volume B. pressure C. density D. viscosity I think the correct answer is D?
April 3, 2009

art
ok thank-you!
February 18, 2009

art
hello me again! i am now looking at the wounderful painting of "little blue horses" by Franz Marc, dose anyone know any good websites where i can find the background history of this painting! i would be very greatful, an also if anyone konws of any quotes that i ...
February 18, 2009

art
what is franz marcs most famous painting(appart from the yellow cow)
February 17, 2009

art
does anyone know where the yellow cow painting by Franz Marc i displayed?
February 12, 2009

art
thanks
February 12, 2009

art
i am doing a project about franz marc an i need some info on one of his animal paintings this info consists of: name: when it was made: how it was made: what it was about: does it tell a story: what is in it: is it happy sad boreing etc: how you feel: and many more! but i dont...
February 12, 2009

art
i have to write a full A4 page with no pictures about Franz Marc but i can not find enough info i have when he was born where an when he died an some other stuff but i am not sure what else to think of an put in!!!
January 9, 2009

algebra
solve the following equation 5x + 4y = 12 Please show work... Thank You!!!
January 2, 2009

Math
Sove the equation in Rational form -2x - 4 < 10
December 12, 2008

Math
Solve the following by Factoring.. 5t^2 - 10t = 0
December 12, 2008

biology
i really need some help!! i understand the parts of the heart and their names, but i am really confused on the cardiac cycle graph that shows the pressure of the heart at certains stages HELP ME PLEASE!
December 1, 2008

chemistry
haha dunno
December 1, 2008

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