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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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
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.
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
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?