1. Charges acquired by rubbing is called 2.A can save building from lightning stroke.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.

Compare the patterns of the two waves shown in the image. which statement is true about these waves?