Which of the following processes would be the most likely process for making composite materials for the shafts of golf clubs?
(a) Resin transfer molding
(b) Vacuum bagging
(c) Pultrusion
(d) Filament winding
(c) Pultrusion
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Two speakers are driven exactly out of phase with each other at 256 Hz. If a microphone is placed on the line between the two speakers exactly in the middle of the line, what is possibly the distance between the microphone and each speaker? The speed of sound is 340 m/s.
A. 0.75 m B. 0.38 m C. Can be any distance at all D. 1.50 m E. 0.94 m
A CD has a diameter of 12.0 cm. If the CD is rotating at a constant angular speed of 200 revolutions per minute, then the tangential velocity of a point on the circumference is
A. 1.06 m/s. B. 1.26 m/s. C. 1.39 m/s. D. 1.62 m/s. E. 1.32 m/s.
Imagine hitting a heavy anvil with a hammer. The hammer is in contact with the metal for a short period of time. How do you suppose the time of contact depends upon how hard you hit the anvil (i.e
, does a hard hit remain in contact much longer or shorter than a light tap?) [It is reasonable to assume Hooke's law of elasticity to hold.]
Mercury, Venus, and Earth have similar densities
Indicate whether the statement is true or false