Recent content by RafaFutbol

1. First Question A car battery is rated at 90 A hr, meaning that it can supply a current of 90 A current for 1 hr before being completely discharged. If you leave your headlights on until the battery is completely dead, how much charge leaves the battery? Can charge be related to the...

I solved the first problem posted, so I deleted it. I still need major help with this one though!

Problem: A microscope is focussed on a black dot. You place a 1cm thick piece of plastic, with an index of refraction of 1.67, over the dot. By how much must you raise the microscope's objective for the dot to be in focus again? Ok, so I'm not sure how to that question at all. Waves and...

Oh, and just to check... did I do part A correcty?

Oh ok, I see. Well thank you so much for the help ^_^ I really appreciate it!

Right, ok. So, since the syring is 6mm wide: (1mL/s) / (pi * (3.0mm)^2) = 0.0354 mm/s are those the proper units to use for the radius?

So I can get it by calculating: dV/dt = flow speed 2.0mL/2s = flow speed flow speed = 1mL/s is it that easy? :S

Ok, for part A I converted it into Pascals 120mm* (1 atm)/760mm*(101.3 kPa)/1atm*(1000 Pa)/(1 kPa)=15994.7 Pa and found the Force to be: p=F/A F=pA F=pπr^2 F=(15994.7 )π〖(0.003)〗^2 F=0.452 N but for part b, what variables would I use? Would I use bernoulli's equation of p + 1/2pv^2 + pgy...

Homework Statement I'll just post the question given: You are at the clinic getting your flu shot. The syringe that is being used to deliver the vaccine has a volume of 2.0 mL, an inner diameter of 6.0 mm, and the needle has an inner diameter of 0.25 mm. The plunger on which the nurse has...

Homework Statement Consider a rope that, unlike those usually studied in mechanics problems, actually has a significant mass "m". The tension at the right end of this rope is T2 and that at the left end is T1. (figure1.0) The rope has an acceleration a_rope to the right. Complete...