15. An electron is trapped within an infinite potential well of length 0.1nm. What is the ground state energy? (mₑ = 9.11×10⁻³¹ kg; h = 6.63×10⁻³⁴ J·s) (A) 3.4 eV (B) 13.6 eV (C) 37.7 eV (D) 151 eV (E) 339 eV

2. The first stage of a Saturn V space vehicle consumes fuel and oxidizer at the rate of 1.50 × 10⁴ kg/s, with an exhaust speed of 2.60 × 10³ m/s. What is the acceleration of the vehicle just as it vertically lifts off the launch pad on the Earth if the vehicle's initial mass is 3.00 × 10⁶ kg? (A) 7.40 m/s² (B) 5.37 m/s² (C) 3.20 m/s² (D) 1.48 m/s² (E) None of the above is correct.

15. An electron is trapped within an infinite potential well of length 0.1nm. What is the ground state energy? (mₑ = 9.11×10⁻³¹ kg; h = 6.63×10⁻³⁴ J·s)
(A) 3.4 eV
(B) 13.6 eV
(C) 37.7 eV
(D) 151 eV
(E) 339 eV

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