Answer the following statement(s) true (T) or false (F)
1. Imagine that in a rectangular region of empty space between the magnetic poles of a large horseshoe magnet, the magnetic field is essentially uniform and points directly downward, but is zero outside the region’s boundary. The four vertical sides of the rectangular region are in empty space. We can easily imagine such a field, but such a field is in fact physically impossible.
1. TRUE
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Simple Pendulum: Two simple pendulums, A and B, are each 3.0 m long, and the period of pendulum A is T. Pendulum A is twice as heavy as pendulum B. What is the period of pendulum B?
A. T/
B. T
C. T
D. 2T
E. T/2
A straight wire that is 0.60 m and carrying a current of 2.0 A is placed at an angle with respect to the magnetic field of strength 0.30 T. If the wire experiences a force of magnitude 0
18 N, what angle does the wire make with respect to the magnetic field? A) 25° B) 35° C) 30° D) 60° E) 20°
A very massive body A and a less massive body B move toward each other under the influence of gravity. Compared to the force on A, the force on B is
1) greater. 2) the same. 3) less. As A and B get closer and closer, each experiences an increase in 4) velocity. 5) acceleration. 6) force. 7) all of these. 8) none of these.
Greek philosophers used religion and astrology to understand the mysteries of the universe
a. True b. False Indicate whether the statement is true or false