Quantum field theory arises out of the combination of
A) quantum theory and nuclear physics.
B) the general theory of relativity and quantum theory.
C) the special theory of relativity and the theory of electromagnetism.
D) the special theory of relativity and quantum theory.
E) quantum theory and the big bang theory of the creation of the universe.
D
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What problem is adaptive optics designed to correct?
A) the opacity of the Earth's atmosphere B) defects in the optical figuring, such as with the adaptive optics on HST C) slight tracking errors in trying to compensate for our unsteady rotation D) the effects of atmospheric turbulence E) the absorption of ultraviolet by the ozone layer
At a depth of about 1030. m in the sea the pressure has increased by 100. atmospheres (to about 107 N/m2). By how much has 1 m3 of water been compressed by this pressure? The bulk modulus of water is 2.3 × 109 N/m2
What will be an ideal response?
If the atoms are in irregular arrangements, the material is ______________.
Fill in the blank(s) with the appropriate word(s).
A 1.5m long dowel is pivoted about the end so that it is a pendulum of sorts - it can freely swing in a vertical plane. At the other end of the dowel is a brass weight having mass 1.5kg. (The center of the brass weight is 1.5m from the pivot point. When the rod is positioned in its swing such that its angle with the vertical is 22.5 degrees, what is the torque on the rod about the pivot due to the presence of the brass weight?
A. 8.4Nm B. 22 Nm C. 20 Nm D. 9.1 Nm