The Greeks rejected the notion that the Earth orbits the Sun. Why?
A) They could not measure how big the Earth was.
B) They weren't as smart as we are.
C) They could not measure a change in stars' positions on the sky.
D) They believed that the Sun is a God.
C
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If a reaction is exothermic and produces large quantities of heat reaching equilibrium, its equilibrium constant will be
A) negative, because it is an exothermic reaction. B) zero, because the reaction will not have an equilibrium constant. C) small (less than. D) large.
Two life preservers have identical volumes, one filled with Styrofoam and the other filled with sand. When both are fully submerged, the buoyant force is greater on the one filled with
A) Styrofoam. B) sand. C) same on each if volumes remain the same.
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 held at 30° below the horizontal?
A. 22 N ? m B. 2.2 N ? m C. 4.4 N ? m D. 13 N ? m E. 37 N ? m
Normal atmospheric pressure is about __________
Fill in the blank(s) with correct word