Recent content by dblanche

I can't seem to get this one, I just don't know how to calculate the effective resistance, what is the difference between effective resistance and normal resistance?? Here is the question: A car battery has a source voltage of 12.00 V and an internal resistance of 0.015 Ω. When the...

Can someone give us a hand in explaining a little about this question?? Gas in a cylinder expands and does 150 joulesof work moving a piston. The Internal energy of the gas changes from 310J to 100J during the expansion. During this process the change in heat is best described as: (a)...

No the allowable load would not be 5 times the maximum load, you divide this maximum load by 5 to give the maximum working load, which is 472.5 kg or 4724.96 Newtons........ Thanks for your help

I have used every formula that I can think of, I've used the following equations: Stress= Force / Area 470 x 10E06 = force / 5.03 x 10E-05 Force = 23624.78 N then multiply 23624.78 by the factor of safety being 5 = 118123.9 Newtons? Don't really know how to do it, could you...

The Ultimate tensile strength of steel is 470MPa. Assuming a factor of safety of 5 the maximum working load an 8.00mm diameter round steel bar should support against gravity is?