At one instant, a mass (m = 1.5 kg) is at the location ‹ 0.27, -0.23, 0 › m and attached to one end of a spring with a spring stiffness ks = 60 N/m and a relaxed length L0 = 0.22 m. The origin is located where the other end of the spring attaches to the ceiling. Stretched_nolabels (a) Determine the force acting on the mass due to the spring.

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?

Which safety measures should you follow during a thunderstorm? check all that apply. (a) avoid touching anything that conducts electricity. (b) avoid touching a person who has been struck by lightning. (c) go outside. (d) keep your computer turned off. (e) stay out of water. (f) stay inside.

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.