An object's position in meters and motion in meters per second can be described by 2 = -18 – 3+ - +2 during the time interval 0 Which of the following statements is the best description of the object's motion?

A. The acceleration of the object is zero
B. The initial position of the object is -18 meters
C. The objects speed is decreasing
D. The average velocity of the object is -3m/s

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.