Recent content by wushumaster

A 1.0 kg copper rod rests on two horizontal rails 1.0 m apart and carries a current of 50 A from one rail to the other. The coefficient of static friction between rod and rails is 0.60. What are the (a) Magnitude and (b) Angle (relative to the vertical) of the smallest magnetic field that puts...

[b]1. Homework Statement Bainbridge's mass spectrometer, shown in Fig. 28-58 (look to this link for image- http://www.cramster.com/answers-apr-08/physics/solution-posted-correctly-bainbridges-mass-spectrometer-shown-fig-28-58-separat_226944.aspx) , separates ionshaving the same velocity. The...

A 100 pF capacitor is charged to a potential difference of 50 V, and the charging battery is disconnected. The capacitor is then connected in parallel with a second (initially uncharged) capacitor. If the potential difference across the first capacitor drops to 35 V, what is the capacitance...

Is there any way your company can loan one to me or rent it out somewhere in the Denver Metro area for perhaps one time use? I'm in high school and I'm doing a science fair project. It would be extremely valuable- thank you for your help!

So I have the piezo lighter hooked up to a rheostat with one mega ohm resistance, then a 30 kilo ohm resistor and then another resistor of 1 mega ohm. I have an oscilloscope- it's really old though. It's max voltage if you set the axis on the bottom of the screen is about 80 Volts. It's hard to...

So when I have two zeners connected, I should get less voltage than if I had one, but this is NOT the case! Why? I don't understand- two zeners of say 1000 V each- say we have a power source than provides 2500 volts- then we should get only 500 V. With one of these zeners, we should get 1500 V...

But we typically feel at least a small shock, right? So since current dominated what we "feel" are you saying that we would feel 100s of mA? Because I thought that kind of current has the potential to kill us. Electrical muscle stimulation max current is only 64 mA. I'm trying to put in...

Amount of current and voltage in an average "shock" from a door nob? What is the amount of current and voltage in an average "shock" from a door nob/handle? I have looked everywhere and cannot seem to find it! Please help! Thanks

oh! is it just because torque equals r cross f and that means it equals 2/3 L- 1/4 L?

Homework Statement The figure shows a view from above of two objects attached to the end of a rigid massless rod at rest on a frictionless table. Imagine a vertical rod, on the top end is a mass of m, an the bottom is a mass of 2m. The length of the rod is L and L/4 down from m (at top), a...