An LED emits light of wavelength 600 nm. What is its band gap?
a. 1.11 eV
b. 1.54 eV
c. 1.99 eV
d. 2.07 eV
e. 2.33 eV
d
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Which of the following can make a string of carbon atoms a living thing?
A) The ability of carbon to act as a living thing independently B) The ability of oxygen to act as a living thing when combined with carbon C) The transmission of information from one carbon molecule to another D) The transfer of electrons from one carbon molecule to another
The complete cycle of lunar phases takes 29.53 days, also known as the Moon's ____________________ period
Fill in the blank(s) with correct word
The innermost satellite of Jupiter orbits the planet with a radius of 422 × 103 km and a period of 1.77 days. What is the mass of Jupiter? (G = 6.67 × 10-11 N ? m2/kg2)
A) 1.33 × 1027 kg B) 1.50 × 1027 kg C) 1.72 × 1027 kg D) 1.89 × 1027 kg E) 3.08 × 1027 kg
When the number of turns in a solenoid and its length are both doubled, the ratio of the magnitude of the new magnetic field inside to the magnitude of the original magnetic field inside is:
a. 0.25 b. 0.50 c. 1 d. 2 e. 4