(a) Explain the working of magnet grippers used for robots. (b) Discuss the applications and working principle of the following sensors. i) Range sensors ii) Acoustic sensors iii) Tactile sensors

Radar devices are used by law enforcement to be sure that individuals are driving safely. they tell the officer how fast the vehicle is traveling at that specific moment in time. the radar device determines the vehicle's a. instantaneous speed. b. acceleration. c. maximum velocity. d. average speed.