Recent content by misterc

I'm a high school physics teacher and this was a question posed to my Honors Physics class. [Simplified] A light wave travels from water to air. Which of the following variables does NOT change between the mediums?" A. speed B. wavelength C. amplitude D. frequency I intended the answer to be...

Would the electron be attracted to a positive plate or a negative plate? Which plate (positive or negative) would have a higher potential? Conservation of Energy: All the electric potential will be converted to kinetic.

Homework Statement A 45 kg boy stands on 30 kg platform suspended by a rope passing over a stationary pulley that is free to rotate. The other end of the rope is held by the boy. The masses of the rope and pulley are negligible. Ignore the friction in the pulley. a) If the rope and the...

Since you got part a), I'll assume you can convert between series, parallel and total capacitance. So, in your problem, we can model the circuit as three capacitors in series. Correct? Let's call the three capacitors C1, C2, C3 where C1 = 8.6 uF, C2 = 4.8 uF, and C3 = 7.5 uF. Correct...

Another equation that I would add to your list is Q = CV (Charge = Capacitance x voltage). I will give you a hint in the form of two questions: 1) How are the charges in a series capacitor circuit related? 2) How does the charge on one of the capacitors in a series capacitor circuit...