) Estimate how fast an electron is traveling from one dome to the other when this distance is the maximum this VDG can produce sparks. Consider that the VDG is a ~1MV. Do the results make sense? Show work [Hint: conservation of mechanical energy at its best…] Q3b) Do you expect brighter or dimmer sparks if the VDG was in a low-pressure chamber? Explain. How does this relate to the previous question? See one of the experiments I performed with a Tesla coil in UAH’s Propulsion lab here. Q3c) Imagine you approach a candle flame next to a VDG. Do you expect to see something interesting? Q3d) Imagine you try to discharge your VDG inside a tube that is filled with Argon (Ar). What do you think it would happen?

What are the differences and similarities of a compression wave and a transverse wave?

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?

Part f - example: finding two forces (part i) two dimensional dynamics often involves solving for two unknown quantities in two separate equations describing the total force. the block in (figure 1) has a mass m=10kg and is being pulled by a force f on a table with coefficient of static friction îľs=0.3. four forces act on it: the applied force f (directed î¸=30â above the horizontal). the force of gravity fg=mg (directly down, where g=9.8m/s2). the normal force n (directly up). the force of static friction fs (directly left, opposing any potential motion). if we want to find the size of the force necessary to just barely overcome static friction (in which case fs=îľsn), we use the condition that the sum of the forces in both directions must be 0. using some basic trigonometry, we can write this condition out for the forces in both the horizontal and vertical directions, respectively, as: fcosî¸â’îľsn=0 fsinî¸+nâ’mg=0 in order to find the magnitude of force f, we have to solve a system of two equations with both f and the normal force n unknown. use the methods we have learned to find an expression for f in terms of m, g, î¸, and îľs (no n).