Select the correct answer from each drop-down menu. Balloon B is negatively charged.
Balloon A is
charged, and balloon C is
charged. If balloon A approaches balloon C, there’ll be a force of
between them.

Taylor's experiment: 1. accurately measured the speed of light 2. locked together the phases of two light sources so that the interference pattern would not shift 3. showed that man's reaction time was much slower than the speed of light 4. showed that individual photons have wave characteristics

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.