The ___________ are theories that unify the electromagnetic, weak, and strong forces at extremely high energies
Fill in the blank(s) with correct word
grand unified theories
GUTs
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A 15-?F air-filled capacitor is connected to a 50-V voltage source and becomes fully charged. The voltage source is then removed and a slab of dielectric that completely fills the space between the plates is inserted
The dielectric has a dielectric constant of 5.0. (a) What is the capacitance of the capacitor after the slab has been inserted? (b) What is the potential difference across the plates of the capacitor after the slab has been inserted? What will be an ideal response?
A horizontal 100-N force exerted against a 1000-N block causes the block to slide on a level surface with constant velocity. The friction force on the block must be
1) zero. 2) 100 N. 3) 1000 N. 4) greater than 1000 N. In this case the pushing force and the friction force are 5) equal but oppositely directed. 6) an action-reaction pair. 7) both of these. 8) none of these.
A 9.0 cm object is placed in from of a mirror and the image formed is upright, behind the mirror, and 3.0 cm in size. Which of the following statements is true and the most inclusive?
A. the magnification is 1/3 B. the magnification is -1/3 C. the image is virtual D. the magnification is 1/3 and the image is virtual E. the magnification is -1/3 and the image is virtual
A high power line carrying 1000 A generates what magnetic field at the ground, 10 m away?
A) 3.2 × 10-6 T B) 4.7 × 10-6 T C) 6.4 × 10-6 T D) 2.0 × 10-5 T E) 5.6 × 10-5 T