Assume an axisymmetric spacecraft with a body- xed principal coordinate system b = {b1; b2; b3} is undergoing torque-free motion. the 3rd axis b3 is the symmetric axis, while izz = 500 kgm2 and ixx = iyy = 300 kgm2. the nutation angle θ between h and b3 is 10 deg. if the body spin rate ! z = 2rad=s, how long does it take for the body to precess a complete revolution about the momentum vector?

In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.

The temperature in gavin's oven is a sinusoidal function of time. gavin sets his oven so that it has a maximum temperature of 280°f and a minimum temperature of 240°. once the temperature hits 280°, it takes 20 minutes before it is 280° again. gavin's cake needs to be in the oven for 30 minutes at temperatures at or above 270°. he puts the cake into the oven when it is at 260° and rising. how long will gavin need to leave the cake in the oven? (round your answer to the nearest minute.)