1ST CORRECT ANSWER GETS BRAINLIEST ASAP Will can jog/walk the mile in 12 minutes and 40 seconds. He is motivated to improve his time by 25%. When he succeeds with this fitness goal he will be able to run the mile in what length of time?

9 minutes and 30 seconds

9 minutes and 50 seconds

10 minutes and 20 seconds

10 minutes and 30 seconds

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.