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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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
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).
A hydraulic press, like an inclined plane, is capable of increasing energy
A) sometimes true B) always false C) always true D) sometimes false
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.