Polymers have a lower surface energy than metals and ceramics do, because at the polymer surface the _____________ bonds between LCMs are broken.
Fill in the blank(s) with the appropriate word(s).
van der Waals
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Torque: A man in a gym is holding an 8.0-kg weight at arm's length, a distance of 0.55 m from his shoulder joint. What is the torque about his shoulder joint due to the weight if his arm is horizontal?
A. 0.24 N ? m B. 4.4 N ? m C. 43 N ? m D. 15 N ? m E. 0 N ? m
A scientist named ______________ discovered the neutron in 1932
Fill in the blank(s) with correct word
Two spaceships traveling in opposite directions along parallel lines measure their own and the other spaceship's length while passing one another. The crew on spaceship A says that their ship is 1 000 m long and that ship B is 800 m long. The crew on ship B says that their ship is 1 000 m long and that ship A is 800 m long. At what speed does each crew say that the other ship is traveling
relative to their own ship? a. 0.36 c b. 0.60 c c. 0.64 c d. 0.80 c e. 1.25 c
Discuss why astronomers no longer consider Pluto a planet
What will be an ideal response?