At the county fair, Carrie and Sam climbed up on the carousel horses. Around and around they went; the horses also bobbed up and
down. When they got off of the carousel, Carrie told Sam they had been accelerating during their ride. Sam disagreed; they had been
moving at a constant speed. Whose response is fully correct, and why?
A)
Carrie is, because the carousel changed speed when it started and stopped
B)
Sam is, because the horses never moved from their position on the
carousel
Carrie is, because velocity includes speed plus direction, and both changed.
Sam is, they did not accelerate since their speed remained constant for the
ride.

what is the question?

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation: