A convex lens always produces a virtual image
Indicate whether the statement is true or false
FALSE
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The following quantities relate to the rate of change of position. Which pair will always have the same magnitude?
A. Average speed and average velocity B. Average velocity and instantaneous velocity C. Instantaneous speed and instantaneous velocity D. Average speed and instantaneous speed
Stars support their weight by generating ____
a. magnetic fields throughout the star b. magnetic fields throughout the star c. energy in their centers d. magnetic-plasmas at their core e. energy-plasmas at their core
Carbon dioxide dominates the atmospheres of Venus and Mars, but on Earth most of it lies underground as ________
Fill in the blank(s) with correct word
What produces a type-I supernova?
A) the collapse of the core of a massive star B) the helium flash blows apart a giant's core C) mass transfer onto a white dwarf pushing it over 1.4 solar masses D) a nova igniting a helium flash in its red giant companion E) the radioactive decay of nickel 56 into cobalt 56 into iron 56