Two displacement vectors have magnitudes of 5 m and 7 m, respectively. When these two vectors are added, the magnitude of the sum
A) is exactly 2 m.
B) could be as small as 2 m, or as large as 12 m.
C) is exactly 12 m.
D) is larger than 12 m.
E) is exactly 6 m.
B
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In a paramagnetic material if a large magnetic filed is first applied and then reduced to zero, the intensity of magnetization is then equal to _________.
Fill in the blank(s) with the appropriate word(s).
Answer the following statement(s) true (T) or false (F)
1. Consider an infinite solenoid. Imagine placing a mirror so that mirror’s plane contains the solenoid’s central axis. Such a mirror would satisfy the conditions of the mirror rule. 2. An infinite solenoid’s magnetic field is uniform everywhere in the solenoid’s hollow interior.
A hydraulic press, like an inclined plane, is capable of increasing energy
A) sometimes true B) always false C) always true D) sometimes false
Making a digital recording of a sound involves
a. analog-to-digital conversion c. electromagnetic waves b. digital-to-analog conversion d. all of the above