An astronaut is in an all-metal chamber outside the space station when a solar storm results in the deposit of a large positive charge on the station. Which statement is correct?
a. The astronaut must abandon the chamber immediately to avoid being electrocuted. b. The astronaut will be safe only if she is wearing a spacesuit made of non-conducting materials.
c. The astronaut does not need to worry: the charge will remain on the outside surface. d. The astronaut must abandon the chamber if the electric field on the outside surface becomes greater than the breakdown field of air.
e. The astronaut must abandon the chamber immediately because the electric field inside the chamber is non-uniform.
C
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In what way is Venus most similar to Earth?
A) Both planets are nearly the same size. B) Both planets have similar atmospheres. C) Both planets have similar surface geology. D) Both planets have warm days and cool nights.
You do 174 J of work while pulling your sister back on a swing, whose chain is 5.10 m long
You start with the swing hanging vertically and pull it until the chain makes an angle of 32.0° with the vertical with your sister is at rest. What is your sister's mass, assuming negligible friction? A) 22.9 kg B) 19.5 kg C) 26.3 kg D) 28.4 kg
Your friend says that the heavyweight champion of the world cannot exert a force of 50 N on an isolated piece of tissue paper with his best punch. You
A) agree that it can't be done. B) have reservations about this assertion. C) disagree, for a good punch easily delivers this much force.
If Q = 400 ?C and the potential difference VA ? VB = ?10 V in the circuit segment shown below, what is the current in the resistor?
a.
1.0 mA right to left
b.
1.0 mA left to right
c.
3.5 mA right to left
d.
3.5 mA left to right
e.
None of the above