The thermoplastic polymer with the highest melting point is _________.
Fill in the blank(s) with the appropriate word(s).
PEEK
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Which of the following is true of Mercury?
A) It has polar caps of solid water. B) It is 95 percent the size of Earth. C) It has negligible atmosphere. D) It is the fourth largest planet of the Solar System.
A spring-powered dart gun is un-stretched and has a spring constant 10.0 N/m. The spring is compressed by 8.00 cm and a 5.00 gram projectile is placed in the gun. The kinetic energy of the projectile when it is shot from the gun is
A. 0.020 J. B. 0.032 J. C. 0.060 J. D. 0.100 J. E. 0.120 J.
What direct evidence do we have that the weak and electromagnetic forces were once unified as a single electroweak force?
A) The most advanced telescopes are able to see back to this era in the universe. B) Detectors on Earth have received photons and high-energy particles from this era. C) Temperatures in the center of the Sun can reproduce the conditions during this era. D) Particle accelerators on Earth can recreate the conditions of this era and have produced particles predicted by the electroweak theory. E) We have no direct evidence of the electroweak force.
Sand spits are formed from sand
A) carried along the coast by longshore transport. B) swept up from the seafloor and heaped up along the shore by wave action. C) swept up from the continental rise. D) swept into a heap by tidal currents.