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if u have time cn u solve currents so i cn match my answer and cn u see my other post of magnetic field? i really need help with that
u helped me so much:-)
omg! u helped me so much:-)
if u have time cn you solve all the currents so i cn match my answer....
thanks once again u r awesome
thanks!
yes i do :-(
God Bless you for taking out time and sharing your knowledge:-)
hmm smart!
your explanation really helps can you solve one loop equation for me, so i would know i am on right track or not
answer is in letters
I figured 4 loops too!...going clockwise
thanks! it sure does helped me....
also can you help me Set up the loop and node equations using Kirkhoffs Laws....i will really appericiate it!
yes! I forgot to erase the lines.....there are no lines !
Identify the number and location of each of the items below. Assume that the resistances and source voltage are known.
Use the gray highlighted letters. Identify voltage drops across resistor Ri as Vi.
- How many nodes are there in this circuit? Where? ________________________
- How many loops possible? Where? ________________________
- How many current variables are there? ________________________
- Is this system solvable? (i.e., can you solve ________________________
for all of the currents?) Why?
b.) Set up the loop and node equations using Kirkhoffs Laws (but do not solve them). Clearly identify the node or loop, including all directions, associated with each equation.
DRAW EACH CURRENT ON THE DIAGRAM ABOVE, CLEARLY SHOWING ITS DIRECTION!
Use the gray highlighted letters. Identify voltage drops across resistor Ri as Vi. (For example, the voltage drop across R1 is V1.)
c.) What is the algebraic method used for solving this system? (name?)
let me know if figure is not clear
thanks I appericiate your help!
please cn u help me with my other problem too
A slide wire (resistance R) travels without friction along the track shown below. It starts from position x0 (non-zero) and velocity v0 , to the right as shown. Assume that the v shaped rails meet at an angle of q. Use the coordinate system shown.
The magnitude of the external magnetic field is constant. The direction of the external magnetic field is also constant (into the page).
a.) State the principle that describes how to calculate the magnitude of the motional electromotive force (this can be an equation).
b.) State the principle that describes how to compute the direction of the current associated with the electromotive force. (words)
c.) Write the equation of the area enclosed in terms of x only. (Hint: What is the equation of the slanted line? Write the slope in terms of q.)
d.) Find the induced electromotive force. This will be a function of both x(t) and v(t).
e.) What is v(t)? (Algebraic equation for v(t).)
yes! it means two variables are multiplying
I have setup the integral , I = 2 pi A∫ r . e^-(r/R) dr
this is first part, I coudn't figure the rest
the current density, the amount of current passing through the
circle at the described radius?...true
A = 2pi. r and e is just an expotenial
A slide wire (resistance R) travels without friction along the track shown below. It starts from position x0 (non-zero) and velocity v0 , to the right as shown. Assume that the v shaped rails meet at an angle of . Use the coordinate system shown.
The magnitude of the external magnetic field is constant. The direction of the external magnetic field is also constant (into the page).
a.) State the principle that describes how to calculate the magnitude of the motional electromotive force (this can be an equation).
b.) State the principle that describes how to compute the direction of the current associated with the electromotive force. (words)
c.) Write the equation of the area enclosed in terms of x only. (Hint: What is the equation of the slanted line? Write the slope in terms of .)
d.) Find the induced electromotive force. This will be a function of both x(t) and v(t).
e.) What is v(t)? (Algebraic equation for v(t).)
A cylindrical conductor (radius R) has current flowing in the direction of its axis.
a.) The current density is J(r) = Ae-(r/R). Find A in terms of the total current, I0. (Use the definition of J.) Hint: xexdx = xex - ex
b.) What is the magnetic field within the conductor, 0<r<R?
c.) What is the magnetic field outside of the conductor, r>R?
d.) What is the principle (law) used in these calculations?
An ideal gas undergoes the process shown in the diagram. Express all results in terms of the values at point a, Pa, Va, and at b, Pb.
a.) Fill in the table below. Express all results in terms of the values at point a, Pa, Va, and at b, Pb.
point Pressure Volume Temperature
a Pa Va ___________
b Pb ___________ ___________
c ___________ ___________ ___________
d ___________ ___________ ___________
b.) Calculate the heat loss or gain along path a->b.
c.) Calculate the entropy loss or gain along the path a->b.
d.) Explain how you would know if this process reversible.
A ball is thrown upwards with speed v0. The ball has net charge Q and travels in the presence of an electric field whose potential function is v = (k/2) y2. Positive y is taken as vertically up. Do not neglect gravity.
a.) Compute the electric field components.
b.) Compute the net force on the ball.
c.) How high does the ball go?
Hint: Use energy conservation.
Note: Assume y0 = 0 and vy (0) = v0y.
Attach detailed calculations.
A high efficiency window is made from two pieces of glass with equal cross section (A) and thickness (LG). The gap between the glass plates is filled with argon. The distance between these plates is LAr. Designate the thermal conductivities as kG and kAr. The temperatures are as shown in the diagram. Assume TIN > TJ1 > TJ2 > TOUT
a.) What type of heat flow occurs?
b.) Set up the heat flow equation (H) for the boundaries corresponding to temperatures TIN and TJ1.
c.) Set up the heat flow equation (H) for the boundaries corresponding to temperatures TOUT and TJ2.
d.) Use the results from parts b.) and c.) to calculate TJ1 (algebraic result).
e.) Use the results from parts b.), c.) and d.) to calculate TJ2 (algebraic result).
f.) Assume that LAr = 5LG. The thermal conductivities are kG = 0.8 J/kg-K and kAr= 1.6x10-2 J/kg-K. What is TJ1? (result in terms of TIN and TOUT and numbers only).
fIND LAPLACE
1. f(t)= tcost
2. f(t)=te4t
I don't need solution I need complete explanation how to solve it