Astronomers use theory to determine the temperature of the Sun's core, because they cannot measure the core temperature directly.
Answer the following statement true (T) or false (F)
True
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Conductors: A thin spherical copper shell of radius 9.5 cm carries an excess charge of -4.2 nC. How many excess electrons are on (a) the outer surface of the shell, and (b) the inner surface? (e = 1.60 × 10-19 C)
What will be an ideal response?
Compared to Jupiter and Saturn, Uranus and Neptune
A) are substantially larger B) contain a much higher proportion of hydrogen compounds C) have no ring systems D) are much more massive
Each night you measure your height just before going to bed
When you arise each morning, you measure your height again and consistently find that you are 1 inch taller than you were the night before but only as tall as you were 24 hours ago! Is what happens to your body in this instance best described as a physical change or a chemical change? A) chemical change because it involves your body B) physical change because it readily reverses C) chemical change because it involves changes in your bone structure D) physical change because water expands as it freezes
What generally causes clouds to form?
A) falling relative humidity B) sinking of saturated air C) lifting of air D) addition of water vapor