Characteristic peaks occur in an x-ray spectrum of an atom because electrons in the atom make transitions to lower energy levels after being bombarded with high energy electrons
a. True
b. False
Indicate whether the statement is true or false
True
Physics & Space Science
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A direct current
a) often changes direction as it flows through a conductor. b) may change in magnitude but always flows in the same direction in a conductor. c) must always remain constant in magnitude but can travel in any direction through a conductor. d) can be used in a circuit with a transformer to change the voltage in that circuit.
Physics & Space Science
What is ?1 expressed as a phase factor?
A. 
B. 
C. 
D. 
E. Something else (specify)
Physics & Space Science
________ attraction holds the electron in orbit around the nucleus of the hydrogen atom.
A. Gravitational B. Electrical C. Nuclear D. Centrifugal
Physics & Space Science
When water boils, its temperature
a. increases. b. decreases. c. stays constant. d. cannot be determined.
Physics & Space Science