All systems have what 1. output and feedback, 2. process and function, 3. input and process and output, 4. input and output and sensors

Apassenger walks toward the rear of a moving train. describe her motion as seen from a reference point on the train. then describe it from a reference point on the ground

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?