Recent content by Gorz

Solved, please close.

Homework Statement Calculate the magnitude and sign of i12 which will flow through a capacitor of 10microfarads when: v12 = +50V, and decreasing at a rate of 104V/s Homework Equations Vab=Q/C The Attempt at a Solution No idea where to even begin with this question I am affraid. :(

No one able to help with this? My exam is tommorow morning and I wouldn't mind some closure on my quiery.

Homework Statement Water flows through a venturi meter, with an inlet diameter of 25cm and a throat diameter of 15cm. The pressure difference is measured using a manometer, which displaces the mercury by 12mm on the throat side. Homework Equations Bernoulli's Mass continuity P=rho.g.h...

Thats the Adiabatic process. Calculate the mass of air in the cylinder from pv=mRT Constants for air Cp=1005J/kgK, Cv=718J/kgK R=287J/kgK, calculate gamma from these. Reaarange the equation for an adiabatic process to find T

What would happen if you cut a cake into 12 pieces and remove 2 pieces from the cake? How many degrees would the 2 pieces of cake be worth. 360/12 = 30, 30*2=60 Or in Radians, Pi = 180, so 2pi/12 *2 = pi/3

I would suggest having a browse of this. http://en.wikipedia.org/wiki/Radian_measure

I calculated the average angular velocity to be 1.745x10^-3 rad/s Average acceleration will be 0, assuming that the average angular velocity is constant. Is this what you are after? there are 12 points on a clock face, so (2pi/12)*2 will give you the angle in radians between 12 and 2. Its...

Force is measured in Newtons and is a vector quantity(has magnitude & direction) P is impulse and is measured in kgm/s, so is a measure of mass*velocity per second Kinetic Energy is measure in Joules yes. Im still lost as to what youre trying to find out.

Depends on what you are trying to find. You will more than likely have to use a combination of these.

Homework Statement Just a quick question. I am not entirely sure how to draw an FBD of a pulley with Inertia. Im doing a problem solving excercise for the atwood machine with two masses over a non ideal pulley and need to sketch its FBD. Thanks

I assume you are talking about the 2nd question yes?

I get an equivalent resistance of 2ohms. Working from the Resistor closest to the Op-amp. 2+2 = 4 Ohms in series, 1/4 +1/4 = 0.5 = 2ohms. 2+2 = 4 Ohms in series, 1/4 +1/4 = 0.5 = 2ohms. So the total resistance in the circuit is 20ohm. 20v source, therefore the input is 2v. Where am...

Sunday Afternoon Bump.

What was your answer for x, I got 0.1236m.