Compared with falling on a wooden floor, a wine glass may not break when it falls on a carpeted floor because of
A) lesser impulse in stopping.
B) longer time to stop.
C) both of these
D) none of the above
Answer: B
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Fluid Flow: Ideal incompressible fluid flows through a 4.0-cm-diameter pipe at 1.0 m/s. There is a 2.0 cm diameter constriction in the line. What is the speed of the fluid in this constriction?
A. 0.25 m/s B. 0.50 m/s C. 2.0 m/s D. 4.0 m/s
A source emits sound at a fixed constant frequency f.If the source moves away from you, the frequency you hear is lower than f
a. True b. False Indicate whether the statement is true or false
An object 3.4 mm tall is placed 25 cm from the vertex of a convex spherical mirror. The radius of curvature of the mirror has a magnitude of 52 cm. (a) How far is the image from the vertex of the mirror? (b) What is the height of the image?
What will be an ideal response?
When a wave crosses from one medium into another in which the wave speed is lower, the frequency is unchanged. The wavelength
A. decreases. B. stays the same. C. increases.