Atechnician is studying the power stroke of a four-stroke engine and determines the following: as the piston is forced down, the mixture of combustion products and air undergoes an adiabatic expansion. the engine is running at 3,200 cycles/min. the gauge pressure immediately before the expansion is 27.0 atm. the volumes of the mixture immediately before and after the expansion are 50.0 cm3 and 400 cm3, respectively (figure below). the time interval for the expansion is one-fourth the period of the cycle. the mixture behaves like an ideal diatomic gas with a specific heat ratio of 1.40. determine the average power (in kw) generated during the power stroke.

8. why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis? (hint: what did the article say about the advantages of digital signals? )

1.in one challenge on the titan games, competitors have to lift 200 pounds up a long ramp. angel is able to move the weight in 42 seconds. anthony gets it done in only 38 seconds. which statement is true? angel has more power than anthony. angel does more work than anthony. anthony does more work than angel. anthony has more power than angel. 2.a mountain climber exerts 41,000 j of work to climb a cliff. how much power does the climber need if she wants to finish in only 500 seconds? power = work / time 20,500,000 watts 82 watts 0.0122 watts 41,500 watts 3.your family is moving to a new apartment. while lifting a box 83 joules of work is done to put the box on a truck, you exert an upward force of 75 n for 3 s. how much power is required to do this? (hint: you only need two of the 3 numbers given! ) power = work / time 249 watts 25 watts 2075 watts 27.7 watts

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?