A straight wire 100 cm long along the X axis has a current of 2A. Let I, j and K be unit vectors on the x, y and z axes, respectively. Magnetic field in uniform space has magnetic induction B = (0.02 T)j find the magnetic force acting on this piece of wire

The objects are acted upon by only one force. gravity. mass times the acceleration of gravity (-9.81meters/second squared).

Sorry i don’t know what to do

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

Answer ( slope);