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Mixing ideal gazes and entropy
I have a question , we we mix 4 ideal gazes, does the entropy change? I though not, because they are -ideal- . But then I started to doubt myself
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I promise this is the last question physics I ask you haha
A 0.670 m long solenoid is formed by wrapping 580 turns of wire around a hollow cylinder with a radius of 0.250 m. At the instant when...
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Here is is again http://imageshack.us/m/819/2563/rxny.jpg
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I found what was wrong with me :)
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For this reaction what are the products that I can get I got already two I'm sure there are another 2, they are alkenes, but I do not know hw to get them.
http://s3.postimage.org/nr4jq7biv/rxn.jpg
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Rectangular loop with sides of length a= 1.30 cm and b= 3.80 cm is placed near a wire that carries a current t?
*** a rectangular loop with sides of length a= 1.30 cm and b= 3.80 cm is placed near a...
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How is that related to solvents .
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Sorry I\m writing with capital letters, I have a problem in the keyboard haha .
Well, in my question is , organic chemistry ,
In sn1 and sn2 , we know that leaving group order is like this ...
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I was asked to draw
(S)-5-heptyn-3amine
I know how to draw it, but , what does the (S), means!
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I got it thanks :)
I was confused because I related it , with the syn and the anti !
Haha I thoght the antimark.. is an addition to some side rather than other side.. something like that..
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What the difference between anti markovnikov rule and markovnikov rule, and when the anti markovnikov happens. Is it only when , there is BH3,THF/H2O2, OH- ?
I can understand if u explain it...
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http://s4.postimage.org/nxozyjlmf/stan.jpg
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Which conformer is more stable of both and why
http://s4.postimage.org/nxozyjlmf/stan.jpg
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A point charge moving in a magnetic field of 1.24 Tesla experiences a force of 0.813·10-11 N. The velocity of the charge is perpendicular to the magnetic field. In this problem, we use the points of...
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Five particles follow the paths shown in the figure as they pass through a magnetic field B, which is indicated by the dots or crosses in the figure. What can you conclude about the charge of each...
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What is the total energy dissipated by the resistor R after the switch is thrown?
Consider the RC circuit in the figure below. The switch was at position a for a long period and it is suddenly...
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Consider the RC circuit in the figure below. The switch was at position a for a long period and it is suddenly switched to position b at time t = 0.
...
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thanks, I need to crorrect , now
I used I= 2epsilon/(R+2r) = 6/(29+0.56*2 ) = 1.99E-1 A
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well I solved all the questions ex[ect of the last one..
I need a help
A battery with an emf of 3.00 V has an internal resistance r. When connected to a resistor R, the terminal voltage is...
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I got it it's 0 N :)
No need to answer it
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A parallel plates capacitor is connected to a battery with emf 13.0 V. The width of the plates is 4.0 cm, the length is 5 cm. And the distance between two plates is 0.005 mm (the distance is much...
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A parallel plates capacitor is connected to a battery with emf 13.0 V. The width of the plates is 4.0 cm, the length is 5 cm. And the distance between two plates is 0.005 mm (the distance is much...
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It means that I got a full answer in the exam ;)))))))))))))))))
Thanksssssssss
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just want to know if I'm correct
lim (x^4)Sin(1/x) / sin^2(X)
x->0
is zero .
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lim x(sqrt(1+4x^2) +2x)
x->-infinity
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what is the integral of |lnx| , between (1/e) to e
I know the integral of lnx = xlnx -x
so what I did was [{(elne-e - (1ln1-1)]} + {(1ln1 -1 ) - 1/e(ln1/e)} ) ].. sadly I got a wrong answer.. ...
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Sorry , no need to answer my question... my anwer is right but there was a problem with the computer
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A 6.28 μC point charge is placed at the center of a cube with a volume of 8.13 m3. Calculate the electric flux through one side of the cube.
here is what I tried to do :
electric flux =...
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OK , but, what is (alpha1, and what is alpha2)
Thanks :)
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Two charges, Q1= 3.60 μC, and Q2= 6.40 μC are located at points (0,-3.00 cm ) and (0,+3.00 cm), as shown in the figure.
What is the magnitude of the electric field at point P, located at (4.50...
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I just want to tell you that in my physics course which is 8 points, I got 99/100, and I want to thank you, for letting me think , and because you never just gave me the answers .
I really worked...
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Vector operations: so I need help to know when one is true or false.
The x-component of a vector can be (+),(-), or zero
A × C = C × A
The scalar (or dot) product of two vectors can be (+),(-),...
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What cells are effected in multiple sclerosis is it the schwann cells or the oligodendrocytes? Or both ?
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A problem in Vermiform appendix, what organs it may can affect ?
Duodenum
Jejunum
Ileum
Transverse colon
Ovaries
Stomach
(I think all of them expect of ovaries right?)
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No need to answer I got it :)
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how to gwt
lim( tanxlnx)
x->0
I tried but , it did not work with me.
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I asked about arcsin x =?
not arcsinhx
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What the difference between them
As well as what the difference bettwen coshx and arccosx
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Pressure Drop
A straight horizontal garden hose 22.0 m long with an interior diameter of 2.50 cm is used to deliver 20oC water at the rate of 0.490 liters/s. Assuming that Poiseuille's Law...
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Terminal Velocity
A sphere r = 1.30 mm and mass = 124.2 mg is dropped into glycerin with density, ρ = 1260.0 kg/m3, and viscosity, η = 1.49 Pa s. Find the terminal velocity of the sphere.
(in...
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Playing Pool A uniform billiard ball with radius R= 7.00 cm rests on a billiard table. At one moment, the b? P?
Playing Pool A uniform billiard ball with radius R= 7.00 cm rests on a billiard table....
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Carrying Drywall
Two builders carry a sheet of drywall up a ramp.
Assume that W = 2.00 m, L = 3.20 m, θ = 25.0°, and that the lead builder carries a (vertical) weight of 155.0 N (34.8 lb). What...
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Playing Pool
A uniform billiard ball with radius R= 7.00 cm rests on a billiard table. At one moment, the ball received a hit from the horizontal direction. Hit point is h above the center of the...
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you really gave me the way to understand the question, I solved it without looking at the last part ; ) haha
thanks
I have a question
about this Kr = (1/2)*I*w^2, here I = (1/2)*m*r^2.. is it...
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Spring Constant
A thin uniform rod has mass M = 0.5 kg and length L= 0.37 m. It has a pivot at one end and is at rest on a compressed spring as shown in (A). The rod is released from an angle...
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Rotating Mass M, a solid cylinder (mass = 1.39 kg, r = 0.100 m) pivots on a thin, fixed, frictionless beari?
Rotating Mass
M, a solid cylinder (mass = 1.39 kg, r = 0.100 m) pivots on a thin, fixed,...
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Spring Constant
A thin uniform rod has mass M = 0.5 kg and length L= 0.37 m. It has a pivot at one end and is at rest on a compressed spring as shown in (A). The rod is released from an angle...
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