The cause of electrical shock is predominantly
A) excess current.
B) excess voltage.
C) reduced resistance.
D) none of the above
Answer: B
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Which statement best describes a theory?
a. A group of ideas about how something should be done, made, or thought about b. A specific statement about nature that needs further testing c. An idea considered so obviously true that the idea does not need to be questioned d. A fundamental principle in which scientists have great confidence e. A general description of some aspect of nature that has been thoroughly tested and widely accepted
A 5.0-liter gas tank holds 1.7 moles of monatomic helium (He) and 1.10 mole of diatomic oxygen (O2), at a temperature of 260 K
The ATOMIC masses of helium and oxygen are 4.0 g/mol and 16.0 g/mol, respectively. What is the ratio of the root-mean-square (thermal) speed of helium to that of oxygen? A) 1.4 B) 2.0 C) 2.8 D) 4.0 E) 5.6
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What will be an ideal response?
The property of response to the environment appears to be
A) a necessary condition, but not a sufficient condition for life B) a sufficient condition, but not a necessary condition for life C) both a necessary condition and a sufficient condition for life D) neither a necessary condition nor a sufficient condition for life