A table has the same temperature as the air above it. That means that the molecules in the air and in the table have
A. the same average velocity
B. the same average energy
C. the same average acceleration
D. the same average mass
Answer: B. the same average energy
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Potential: A proton that is initially at rest is accelerated through an electric potential difference of magnitude 500 V. How much kinetic energy does it gain? (e = 1.60 × 10-19 C)
A. 500 J B. 8.0 × 10-17 J C. 1.6 × 10-19 J D. 800 J
Which of the above illustrations shows a neutral aqueous solution?
A) A B) B C) C D) All of the above are neutral solutions. E) none of the above
Since its density is similar to ours, we think that Venus too has a core of ________
Fill in the blank(s) with correct word
An individual oxygen atom has 16 times the weight of an individual hydrogen atom. What is the weight ratio of oxygen to hydrogen in water?
A) 1 part oxygen to 16 parts hydrogen B) 1 part oxygen to 2 parts hydrogen C) 1 part oxygen to 8 parts hydrogen D) 8 parts oxygen to 1 part hydrogen E) 16 parts oxygen to 1 part hydrogen