Which of the following is the shell electron configuration for carbon?
a. 3, 3
b. 6
c. 2, 4
d. 1, 5
c
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A carbon resistor has a resistance of 18 ? at a temperature of 20°C. What is its resistance at a temperature of 120°C? The temperature coefficient of resistivity for carbon is -5.0 × 10-4/C°
A) 16 ? B) 18 ? C) 17 ? D) 15 ?
As a basketball player starts to jump for a rebound, he begins to move upward faster and faster until he leaves the floor. During this time that he is in contact with the floor, the force of the floor on his shoes is:
a. bigger than his weight. b. equal in magnitude and opposite in direction to his weight. c. less than his weight. d. zero.
Which of the following is a transuranium element?
a. Am b. Pa c. Ra d. Tc
A typical white dwarf is
A) as massive as the Sun but only about as large in size as Earth. B) as large in diameter as the Sun but only about as massive as Earth. C) about the same size and mass as the Sun but much hotter. D) as massive as the Sun but only about as large in size as Jupiter.