The time for one complete cycle of a periodic process to take place is called the period
Indicate whether the statement is true or false
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A set of twins, Andrea and Courtney, are initially 10 years old. While Courtney remains on Earth, Andrea rides on a space ship which travels away from Earth at a speed of 0.6c for five years (as measured by Courtney),
then turns around and comes back at 0.6c. When Andrea returns, Courtney is 20 years old. How old is Andrea upon her return? A) 10 years B) 12 years C) 15 years D) 18 years E) 20 years
What happens to the magnitude of the magnetic field inside a long solenoid if the radius is doubled?
1.It becomes four times larger. 2.It becomes twice as large. 3.It is unchanged. 4.It becomes one-half as large. 5.It becomes one-fourth as large.
The "seeing" ability or resolution of radiation is determined by its wavelength. If the size of an atom is approximately 10-10 m, how fast must an electron travel to have a wavelength smaller than that of an atom? (me = 9.11 × 10^-31 kg and h = 6.63 × 10^-34 J×s)
a. 1.0 × 10^6 m/s c. 5.4 × 10^5 m/s b. 7.3 × 10^6 m/s d. 3.4 × 10^6 m/s
An electron in a hydrogen atom makes a transition from the n = 4 to the n = 3 energy state. Determine the energy (in eV) of the emitted photon
a. 0.54 b. 0.66 c. 0.85 d. 1.51 e. 10.2