In a turbine blade with grain boundaries parallel to the blade axis, the shear stress on the grain boundaries of a rotating turbine blade is equal to _________.
Fill in the blank(s) with the appropriate word(s).
zero
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Ohm's Law: The graph shown in the figure shows the results of measurements of the dc current through a circuit device for various potential differences across it. Assume that all the numbers shown are accurate to two significant figures. What is the resistance of this device?
Fill in the blank(s) with the appropriate word(s).
When Jean standing on slippery ice catches her leaping dog Daisy, the momentum of both Jean and Daisy after the catch is
A) greater than their combined momentum before the catch. B) equal to their combined momentum before the catch. C) somewhat less than their combined momentum before the catch.
What is the magnitude of the approximate magnification of a compound microscope with objective and eyepiece focal lengths of 0.90 cm and 3.6 cm, respectively, and a separation between lenses of 20 cm?
a. 460 c. 20 b. 12 d. 150
The center of gravity for each truck is marked X. Which truck(s) will tip over?
1) Truck 1 2) Truck 2 3) Truck 3 4) All will tip. This is because 5) its center of gravity is highest. 6) its center of gravity is lowest. 7) its center of gravity lies beyond a point of support. 8) all the centers of gravity lie above the wheelbases.