Answer:
3. µs g /7
Explanation:
The largest Force appear when the maximal friction Force is required.
Second Newton law for the small block:



Second Newton law for the Big Block:



For an atom to achieve a stable electron configuration, it needs 8 valence electrons. Since this atom has 6 valence electrons, it needs 2 more to achieve a stable electron configuration.
8-6=2
Answer:
Nature of Sound Waves Sound is a wave that is created by <u>perturbations</u> and propagated through a <u>medium</u> from one location to another. Type of Wave: <u>longitudinal wave</u><u>.</u> A sound wave consists of a repeating pattern of high-pressure and low-pressure regions moving through a medium Sound needs a <u>medium of propagation</u> and a <u>disturbance.</u> Like any wave, the speed of a sound wave refers to how fast the disturbance is passed from particle to particle. Anatomy of a Wave:
Answer: D.
They examine the spectra of extremely high-redshift galaxies.
Explanation:
Astronomers Measure Redshift and the most accurate way to measure redshift is by using spectroscopy. When a beam of white light strikes a triangular prism it is separated into its various components (ROYGBIV). This is known as a spectrum (plural: spectra).
With an estimated distance of about 32 billion light-years (comoving distance,) or 13.4 GLY (light-travel distance,) astronomers announced it as the mostdistant astronomical galaxy known