An airplane travels 80 m/s as it makes a horizontal circular turn which has a 0.80-km radius. What is the magnitude of the resultant force on the 75-kg pilot of this airplane?

A. 0.69 kN
B. 0.63 kN
C. 0.66 kN
D. 0.60 kN
E. 0.57 kN


Answer: D

Physics & Space Science

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A) 105 kJ B) 153 kJ C) 57.3 kJ D) 47.7 kJ E) 210 kJ

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Indicate whether the statement is true or false

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A hydrogen atom is in its n = 2 excited state when its electron absorbs a photon of energy . What is the energy of the resulting free electron? The lowest level energy state of hydrogen is -13.6 eV. (h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)

A) 5.1 eV B) 6.6 eV C) 6.9 eV D) 7.7 eV

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