Technician A says asbestos can be cleaned off the brake parts by blowing it off with compressed air. Technician B says it can be raised off with a water hose. Who is correct?

Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?

The proportional limit is always greater than the yield strength for a material. a)-trune b)- false

Arigid tank contains 10 kg of air at 137 kpa (abs) and 21°c. more air is added to the tank until the pressure and temperature rise to 242 kpa (abs) and 32°c, respectively. determine the amount of air added to the tank. [r-0.287 kj/kg k]