A pencil has
A. no nuclei in it.
B. no electric charges in it.
C. enough positive charge in the nuclei to balance the negative charge of the electrons.
D. electrons that are not attracted to nuclei.
Answer: C
You might also like to view...
Kinetic Energy: An object hits a wall and bounces back with half of its original speed. What is the ratio of the final kinetic energy to the initial kinetic energy of the object?
A. 1/2 B. 1/4 C. 1/8 D. 1/16
Rank these planets in order of the strength of the greenhouse effect on the planet, from the least to the greatest
A) Mars, Mercury, Earth, Venus B) Mars, Earth, Venus, Mercury C) Mercury, Venus, Earth, Mars D) Mercury, Earth, Mars, Venus E) Mercury, Mars, Earth, Venus
A book is placed on a chair. Then a videocassette is placed on the book. The floor exerts a normal force
a. on all three. b. only on the book. c. only on the chair. d. upwards on the chair and downwards on the book. e. only on the objects that you have defined to be part of the system.
The emissivity of an ideal reflector has which of the following values?
a. 0 c. 100 b. 1 d. infinity