Atest charge of -1.4 × 10^-7 coulombs experiences a force of 5.4 × 10^-1 newtons. calculate the magnitude of the electric field created by the negative test charge. a. 1.4 × 10^6 newtons/coulomb b. 1.9 × 10^6 newtons/coulomb c. 5.4 × 10^-1 newtons/coulomb d. 3.6 × 10^6 newtons/coulomb

The “death throes” of stars are amongst the most complex phenomena in all of astronomy, and the “corpses” of stars amongst the most energetic and exotic objects in existence. beginning at the end of the core helium fusion stage in a star’s life, describe in detail the post-main sequence development of both (a) a 1.0 solar mass star, and (b) a 25.0 solar mass star. in what significant ways do they differ? what role does each of these types of stars play in the "star-gas-star" cycle and the evolution of chemical elements in our galaxy?

Apassenger walks toward the rear of a moving train. describe her motion as seen from a reference point on the train. then describe it from a reference point on the ground

Which of the following represents an upright image? a. -do b. +m c. -m d. +do