An electron is in an infinite square well (a box) that is 8.9 nm wide. What is the ground state energy of the electron? (h = 6.626 × 10-34 J ? s, mel = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19)
A) 0.0048 eV
B) 0.0057 eV
C) 0.0066 eV
D) 0.0076 eV
E) 0.0085 eV
A
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NASA uses the famous "Vomit Comet," a KC-135 cargo plane, to provide astronauts and scientiest a simulated zero-gravity environment. The plane flies in a parabolic arc, at the top of which a passenger feels "weightless." This is because
A. the acceleration of the passenger is nearly zero at the top of the arc B. the gravitational force exerted by Earth on the passenger is nearly zero at the top of the arc C. the force exerted by the floor of the plane on the passenger is nearly zero at the top of the arc D. a and b
For driving voltage 
, the current through the resistor is
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Absolute zero is ________
A) 0 Kelvin B) 0° Fahrenheit C) 0° Celsius D) 100° Celsius
Why is life difficult to define?
What will be an ideal response?