Energy Levels: A highly ionized atom with Z = 5 has only one electron left around it, in its ground state. How much more energy is required to finish the job and have a bare nucleus?
A. 340.0 eV
B. 68.0 eV
C. 10.9 eV
D. 13.1 eV
Answer: A
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When an object is inside the focal point of a concave mirror, a(n) ______________ image always results
Fill in the blank(s) with correct word
An incompressible fluid is flowing through a vertical pipe with a constriction. The wide section is 2.00 cm in diameter and is at the top of the pipe. The pressure of the fluid in the wide section at the top is 200 kPa. The velocity of the fluid in the wide section is 4.00 m/s. The narrow section is 1cm in diameter and is located 2.00 m below the wide section. What is the pressure of the fluid in the narrow section? (density of the fluid is 1,000
A. 72 kPa B. 80 kPa C. 95 kPa D. 105 kPa E. 116 kPa
Synchrotron radiation is produced by
a. objects with temperature below 10,000 K. b. high-velocity electrons moving through a magnetic field. c. cold hydrogen atoms in space. d. the collapsing cores of massive stars. e. a helium flash.
Consider a main-sequence star, a white dwarf, a neutron star, and the singularity of a black hole. Which of the following lists them in the correct order of increasing density (low to high)?
A) main sequence star, white dwarf, neutron star, black hole singularity B) main sequence star, neutron star, white dwarf, black hole singularity C) black hole singularity, main sequence star, white dwarf, neutron star D) main sequence star, black hole singularity, neutron star, white dwarf