Ohm's Law: What potential difference is required to cause 4.00 A to flow through a resistance of 330 ??
A. 12.1 V
B. 82.5 V
C. 334 V
D. 1320 V
Answer: D
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The diameter of an atom is 1.4 × 10-10 m and the diameter of its nucleus is 1.0 × 10-14 m. What fraction of the atom's volume is occupied by its nucleus?
A) 3.6 × 10-13 B) 7.1 × 10-5 C) 5.1 × 10-9 D) 2.6 × 10-17
The time required for one-half of a radioactive material to decay is called the
A) absolute age. B) half-life. C) date age. D) true-life.
In his special theory of relativity, Einstein stated that the laws of physics are
A) different in different situations. B) common sense applied to microscopic and macroscopic things. C) the same in all frames of reference. D) the same in all uniformly moving frames of reference.
If I0 = 10?12 W/m2 is the threshold of hearing, a sound with intensity I1 = 10?11 W/m2 will give a certain decibel level. Suppose a new sound has an intensity I2 = 2I12/I0 . What is the new decibel level?
a. 2.3 dB b. 23 dB c. 100 dB d. it will square the decibel level e. 1.0 dB