Van der Waals bonding is due to
A) the transfer of electrons between atoms.
B) atoms bonding to hydrogen molecules.
C) unequal charge distribution around neutral molecules.
D) the sharing of electrons between atoms.
C
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How is a luminosity class assigned to a star?
a. By combining the apparent magnitude with the star's parallax. b. By measuring the period of variability in the star's apparent magnitude. c. By studying the absorption line width in the spectrum of the star. d. By observing the angular size of the star's image in a photograph or digital image.
Visible light from a distant star can be spread into a spectrum by using a glass prism or ________
A) a telescope B) a flat glass mirror C) a diffraction grating D) adaptive optics
A nuclear reactor could explode like an atomic bomb
a. True b. False Indicate whether the statement is true or false
An object that is 3.4 mm tall is placed 25 cm from the vertex of a convex spherical mirror. The radius of curvature of the mirror has magnitude 73 cm. (a) How far is the image from the vertex of the mirror? (b) What is the height of the image?
What will be an ideal response?