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1. ### Varying Resistors in Bridge Circuits?

no I've just been taught about it and I am just wondering what happens to the system.
2. ### Varying Resistors in Bridge Circuits?

What happens to the system response if all four resistors are equal. One of the resistors is an RTD.
3. ### Estimating Henrys Law constant C02

I think i have to do the log of the graph then use quadratics and polynomials to compare and conclude. Does anyone know how i can use polynomial treadlined graphs to calculate the henry's constant which is in the x axis.
4. ### Estimating Henrys Law constant C02

I was given the table below all i want to do is estimate the Henry's constant at -10 and 60 degrees. Just wondering the best way to go about this. Would it be to take the log of the graph and add a treadline? HENRY’S LAW CONSTANT FOR CO2 TEMPERATURE (0C) HENRY’S LAW CONSTANT (Kh/10,000...
5. ### Identify Component Used in 9300 Circuit - Plz Help

Format Converter/RGBProcessor

Homework Statement To draw the velocity diagram. All information is in the attachment. i don't actually have any measuremnets, as they will be given in the lab, but I am struggling with one link. Homework Equations no needed The Attempt at a Solution in the attachment, i know its not...
7. ### Free Vibration with Vicous Damping

Aleph i actually got the vaule for the heavy postion 2 it is actually 1.062 which makes the overall damping about 3 which is about 50% off of the light. im not sure why its not working.
8. ### Free Vibration with Vicous Damping

Thank you very much Aleph
9. ### Free Vibration with Vicous Damping

thanks for the help much appreciated
10. ### Free Vibration with Vicous Damping

T1 and T2 is the time periods of two successive peaks taking from my graphs that show the oscillation to get the Td period of the damped oscillation. The spring stiffness wasn't needed to calculate the damping constant
11. ### Free Vibration with Vicous Damping

When i calculate (L2/L)2 for damper position 2 18.3cm i get 0.062 which means that when i divde that with the equivalent damping coefficient i get a bigger damping (c)
12. ### Free Vibration with Vicous Damping

Thanks for the reply here's my sample calculation Position 1 – 50.5 cm Damper Setting – Light Offset on graph is 1.979mm The offset of the graphs have to be added to the peaks Xm = 0.751 + 1.979 = 2.73 mm Xm+1 = 0.379 + 1.979 = 2.358 mm Xm / Xm+1 = 2.73/2.358 = 1.156...
13. ### Free Vibration with Vicous Damping

i was going to but the table of my results kept duffing up
14. ### Free Vibration with Vicous Damping

Hi, I am currently doing an experiment to determine the the viscous damping coefficient (c) of a dashpot. Where you move the position of the damper to determine the effect of the damping but my results show that when the damper is closer to the pivot the damping increases but i thought the...
15. ### Non Flow Energy Equation

Homework Statement 1 kg of air at a pressure of 100 kPa occupying a volume of 0.025 m3 is compressed to a pressure of 150 kPa according to the law pv1.3 = constant. Determine: (i) Work done on or by the gas; (6) (ii) Change in internal energy of the gas; (6) (iii) Heat received or...
16. ### Macaulay's beam deflection

yeah i know but I am just getting confused cause there's more than one load
17. ### Macaulay's beam deflection

Hi, quick question Ive been using the beam deflection forumla EIV=... and I am getting answers of 1.9mm for example does this mean that the deflection is in the south direction or north? Cheers
18. ### Calculate Maximum Torque

hey, thanks for replying so do i even need to bother with the 0.4 x the yield when i can just use the formula you gave to find the stress
19. ### Calculate Maximum Torque

but it says in the handout that i got that the maximum allowabale shear stress is equal to 0.4 * the yield stress ive included the handout in an attachment thanks for the help by the way, but how do i find the shear stress then. cheers
20. ### Calculate Maximum Torque

This is what i have done but the answer is still not the same Od = 0.03340m Id = 0.02664m Shear modulus = 27GPa yield stress = 172Mpa Max allowable shear stress = 0.4 * yield stress Max Angle 15 degrees lentgh = 2.4m T = (Stress/r)*J (172MPa * 0.4 /0.0167)*...
21. ### How to calculate sample stiffness

hi i need to calculate the torsional stiffness of a sample, the data is in the excel file. To work it out it = 1/samplek= 1/totalk - 1/machinek the machine k was given as 42800NM/radian the total k is the slope of the line which comes to y=658x what i don't get is what am i meant to...
22. ### Calculate Mass Of Shaft and Hollow Shaft

Hi, i have a shaft with OD = 33.40mm Wall Thickness = 3.38 mm length = 2.4m Density of shaft = 2750 The weight per unit length that is given is 0.8555 kg/m My question is how did they get it as I am...
23. ### Calculate Maximum Torque

A 2.4 m long structural aluminium pipe (series 6063-T6) is used as part of a roof structure. As part of the design process it is required to assess the suitability of different sizes of pipe. Calculate the maximum torque that can be applied to the shaft if the maximum allowable yield stress...
24. ### Hydrostatic force on submerged curved surface

oh sorry it example 11-2 on page 494 and its the weight of fluid block per m length that i don't get
25. ### Hydrostatic force on submerged curved surface

Hi its question 11-19, i triedto put it on word but it didnt let me upload. And I've got the solutions to the problem. and so when it says to calculate the weight it says rowg * (R^2 - Pie * (R^2)/4 * 1
26. ### Hydrostatic force on submerged curved surface

Homework Statement Hi i know how to do these problems but its calculating the weight of the fluid, which you have to do to minus it from the vertical force. But in the solutions to the problem is say that the volume is R^2 - Pie *(R^2)/4 *1 The only thing i want to know is why is that...
27. ### Calculating Acceleration of Buoyancy Balloon Carrying 140kg

so should i calculate the weight of the air using - row(density of air) * 9.81 * volume of balloon then do the buoyancy force minus the weight of air and the weight of the people(m*g) but if this is correct I am not sure why my buoyancy force is lower than the weight as the weight of...
28. ### Calculating Acceleration of Buoyancy Balloon Carrying 140kg

yeah, i thought i should take away the weight of the balloon and the people from the buoyancy force and that would leave me the force pushing it up and accelerating it. is this wrong. does the buoyancy force=weight
29. ### Calculating Acceleration of Buoyancy Balloon Carrying 140kg

Surely someone can help me?
30. ### Calculating Acceleration of Buoyancy Balloon Carrying 140kg

Hi i have this question: A balloon is filled with helium gas which weighs approximately one-seventh of what air weighs under identical conditions. The balloon has a diameter of 10 m and carries two people, each weighing 70 kg. Assume the density of air is 1.16 kg/m3 and neglect the weight of...

yeah i know what you mean i actually used the 220C in the equation but the final answer was coming smaller than the actual answer so i tried the 100C

i'm not really sure to be honest, how did you get 219