Suppose you measured the bathymetry off the Oregon coast with an echo-sounder and came up with a few measurements that gave two average values of the return time: 4 seconds and 8 seconds. Of these two values, which implies the deeper depth, or are they the same?

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.