Ahelium filled balloon of volume v in a car is anchored by a string and is observed to deflect 5 degrees aft towards the back when the car's speed changes. the vertical buoyant force created by the balloon is given by fbuoyant = rhoair vballoon g. what is the car’s forward acceleration in m/s^2?

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero