Which of the following is not a task electricians typically do when maintaining a building’s electrical system? inspect electrical components, like circuit breakers and transformers

replace insulation to help control and maintain the structure’s environment

supervise and train less skilled workers

repair or replace electrical equipment, fixtures, or wiring

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above