What is neccessary for a magnetic field to create electric current in a copper coil?
a. the magnetic field must be moving or changing
b. the magnetic field must not be moving
c. the north pole of the magnetic field must center the coil before the south pole
d. the magnetic field must be in the center of the copper coil

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest.2000 kg car going 5m/s500 kg car going 20 m/s1000 kg car going20m/s500 kg car going10m/s1000 kg car going10/s4000 kg car going 5m/s 0 0 603

Acar traveling at a constant speed of 22.0 m/s passes a trooper hidden behind a billboard. one second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.50 m/s2. how long does it take the trooper to overtake the speeding car? solve this problem by a graphical method. on the same graph, plot position versus time for the car and the trooper.