The diagram shows a trace of a wave on a cathode-ray oscilloscope. the vertical and horizontal gridlines have a spacing of 1.0cm. the voltage scaling is 4vcm–1 and the time scaling is 5ms cm–1. 1cm1cmwhat are the amplitude and period of the wave? amplitude/v period/ ms a 1.5 4 b 5.0 10 c 6.0 20 d 12.0 20

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 is an advantage of subdividing science into different areas?

The gravitational force between pluto and charon is 3.61 × 1018 n. pluto has a mass of 1.3 × 1022 kg, which is only slightly greater than charon’s mass of 1.6 × 1021 kg. how far apart are pluto and charon? 2.0 × 107 m 2.4 × 1012 m 3.8 × 1014 m 5.8 × 1024 m