Answer:
23 mi
Explanation:
Let us first record all the values we have
acceleration = 4 ft/s
max speed = 90 mi/hr * 1 hr/3600s * 5280 ft/1 mi = 132 ft/s
We can use the equation of linear motion since acceleration is constant
distance covered = distance during acceleration + distance during costant
velocity
distance in miles = 120 978 ft * 1 mi/5280 ft = 22.9125 mi ≈ 23 mi
Well most of the earth's oxygen resides in mineral oxides of the crust. a small fraction resides in the atmosphere and an even smaller fraction resides in the biosphere. still the biosphere is crucial to understanding the atmospheric oxygen budget as it controls short term exchanges between sediments and the atmosphere.
Answer:
An atom which had neither gained any extra electron nor had lost any of its own electron is a Neutral Atom.
If an atom loses or gains one or more electron it becomes charged ie it becomes ion.
eg
Na is neutral atom with no charge
Ca+2 is an atom which has lost two electrons to become positively charged ion
O-2 is an atom which has gained two electrons to become negatively charged ion
