In Europe, a large circular walking track with a
diameter of 0.900 km is marked in angular distances in
radians. An American tourist who walks 3.00 mi daily
goes to the track. How many radians should he walk?

Use the table to answer question 22 23 and 24.

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.

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?