A 7000kg truck of 125 km. h-1 is moving north and collide with a 7000g car which moves with 19.m. s-1 south. after collision the truck moves with 98km. h-1.calculate velocity of the car after collision ​

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.