The next few questions refer to the golden great bridge, built on planet tehar in a galaxy far, far away. the bridge-building technology on teacher is not very well developed: the bridge is just a long slab of pure gold with the opposite ends resting on the shores of the river.
in the spring, when the air temperature is 100°c , the length of the bridge is 160.0 m. answer the questions below knowing that the value of α for gold is 1.42 x 10^−5°c^−1. compared to its length in the spring, by what amount delta l winter does the length of the bridge decrease during the teharian winter when the temperature hovers around -150 °c ? and compared to its length in the spring, by what amount delta l summer does the length of the bridge increase during the teharian summer when the temperature hovers around 700°c?

Two horizontal plates with infinite length and width are separated by a distance h in the z direction. the bottom plate is moving at a velocity u. the incompressible fluid trapped between the plates is moving in the positive x-direction with the bottom plate. align gravity with positive z. assume that the flow is fully-developed and laminar. if the systems operates at steady state and the pressure gradient in x-direction can be ignored, do the following: 1. sketch your system 2. identify the coordinate system to be used. 3. show your coordinates and origin point on the sketch. list all your assumptions. 5. apply the continuity equation to your system. nts of navier stokes equations of choice to your system 7. solve the resulting differential equation to obtain the velocity profile within the system make sure to list your boundary conditions. check units of velocity 8. describe the velocity profile you obtain using engineering terminology. sketch that on the same sketch you provided in (1). 9. obtain the equation that describes the volumetric flow rate in the system. check the units.

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?