A sound wave in a metal bar is an example of a longitudinal wave
a. True
b. False
Indicate whether the statement is true or false
True
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The youngest stars in the Orion Nebula and other star-forming regions also show
a. circumstellar disks. b. jets. c. circumstellar disks and jets.
A certain part of the electromagnetic spectrum ranges from 200 nm to 400 nm. What is the highest frequency associated with this portion of the spectrum?
A) 1.50 × 1014 Hz B) 7.50 × 1013 Hz C) 7.50 × 1014 Hz D) 7.50 × 1015 Hz E) 1.50 × 1015 Hz
A neutral atom has electron configuration 1s22s22p63s23p2. What element is this?
A) carbon B) iron C) nitrogen D) silicon E) germanium
Classically, the concept of "tunneling" is impossible. Why?
a. The kinetic energy of the particle would be negative. b. The velocity of the particle would be negative. c. The total energy of a particle is equal to the kinetic and potential energies. d. The kinetic energy must be equal to the potential energy. e. The total energy for the particle would be negative.