An atomic nucleus has a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the center of the nucleus?
(k = 1/4??0 = 8.99 × 109 N ? m2/C2, e = 1.60 × 10-19 C)
A) 5.4 × 10-8 N/C
B) 5.6 × 10-8 N/C
C) 5.8 × 10-8 N/C
D) 6.0 × 10-8 N/C
E) 6.2 × 10-8 N/C
C
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Ideal Gas Law: A 5.3 L flask of ideal neon gas (which is monatomic) is at a pressure of 6.0 atm and a temperature of 290 K. The atomic mass of neon is 20.2 g/mol. What is the mass of the neon gas in the flask. (R = 8.31 J/mol ? K, 1 atm = 101 kPa, NA = 6.022 × 1023 molecules/mol)
A. 2.7 × 10-2 B. 1.6 × 10-2 C. 1.3 × 101 D. 2.7 × 101 E. 2.7 × 103
The spectrum of Star A has an absorption line of hydrogen at 660.0 nm. The spectrum of Star B has an absorption line at 666 nm. The wavelength of this transition in the laboratory is 656 nm. What can I say about Star A and Star B?
A) Both stars are moving away from me, Star A is faster than Star B. B) Both stars are moving toward me, Star A is faster than Star B. C) Both stars are moving toward me, Star B is faster than Star A D) Both stars are moving away from me, Star B is faster than Star A.
When light illuminates a grating with 7000 lines per centimeter, its second order maximum is at 62.4°. What is the wavelength of the light?
A) 336 nm B) 363 nm C) 452 nm D) 633 nm E) 752 nm
A pulse is described by 
in SI units. What is the velocity of the pulse?
A. 3 m/s in the +x direction B. 2 m/s in the ?x direction C. 2 m/s in the +x direction D. 4 m/s in the ?x direction E. 4 m/s in the +x direction