Part c
it's time to make the ice pieces. for ice piece 1, place 2 teaspoons of water into one of the spaces in the ice cube tray. to
make ice piece 2, place 2 teaspoons of water into the sealable plastic bag. carefully squeeze as much of the air out of the
bag as possible without spilling any water. then seal the bag. place the sealed bag on a flat surface in the freezer. place
the ice cube tray in the freezer at the same time. leave both in the freezer for four hours. record the start time and the
time when you can remove the ice.

As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.

The california mussel (mytilus californianus) attaches itself to a rock or other solid surface with a bundle of filaments known as the byssus. imagine that 15.0 j of work is done to stretch the distal end of the byssus. it releases 10.8 j of thermal energy as it relaxes. what is the resilience of the distal end of the byssus?

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow