The muscles in arm 1 shown below are composed of 80% slow twitch and 20% fast twitch fibers. The muscles in arm 2 are composed of 20% slow twitch and 80% fast twitch fibers. Which arm would be able to perform the most repetitions with the 5 kg-dumbbell, and why?

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)