two technicians are discussing the filling of an air conditioning system, technician a says that to add small amounts of refrigerant slowly into a system, a liquid charging method is recommended. technician b says that on smaller systems, liquid charging is usually done with the unit running. which is correct

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?