Sounds with frequencies higher than the human ear can detect are in the ______________ range
Fill in the blank(s) with correct word
ultrasonic
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A car is traveling at 26.0 m/s when the driver suddenly applies the brakes, causing the car to slow down with constant acceleration. The car comes to a stop in a distance of 120 m
How fast was the car moving when it was 60.0 m past the point where the brakes were applied? A) 15.0 m/s B) 12.1 m/s C) 18.4 m/s D) 22.5 m/s E) 9.20 m/s
You have a choice between two lenses of focal lengths fa and fb, where fb = 2fa, to use as the objective lens in building a compound microscope. If the magnification you obtain using lens a is Ma, what will be the magnification when using lens b?
A) Mb = 2 Ma B) Mb = 4 Ma C) Mb = 8 Ma D) Mb = Ma/4 E) Mb = Ma/2
The image of an object beneath the surface of a medium of refractive index n> 1 is seen in air by a person looking down on the surface. This image, formed by light rays leaving the flat refractive surface, is
A. real and closer to the viewer than the object. B. virtual and closer to the viewer than the object. C. real and farther from the viewer than the object. D. virtual and farther from the viewer than the object. E. virtual and the same distance from the viewer as the object.
Estimate the heat transfer from an object at 100ºF to a surface at 40ºF through a heat conducting media having thermal conductivity of 5 Btu/hr?ft?ºF if the shape factor is 1.0 ft.
What will be an ideal response?