A bicyclist is riding at an initial velocity of 12 m/s, then stops pedaling and slows down at a constant rate of acceleration of -0.8 m/s2. How many seconds does it take the bicyclist to coast to a final velocity of 0m/s? A.15s
B.9.6s
C.12s
D.6.0s

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Phase changes are chemical changes. true or false

The movement of electrons between atoms is called an

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.