Answer:
Atomic mass is the weighted average mass of an atom of an element based on the relative natural abundance of that element's isotopes. The mass number is a count of the total number of protons and neutrons in an atom's nucleus.
Answer:
The law of conservation of energy applies to eating your favorite food in that the energy contained in the food is being converted to energy usable for the body system after the final digestion(Glucose or simple sugar, amino acid, etc)
Examples of transformation of energy include
(1) Transformation from Chemical energy in battery to light energy in bulb
(2) Transformation of Electrical energy to thermal/Heat energy in electric stove.
Explanation:
The law of conservation of energy states that energy can neither be created or distroy. It can only by converted from one form to another.
Answer:
Explanation:
Initial velocity u = 1 m /s
final velocity v = .25 m /s
mass of the mug m = .85
initial kinetic energy
= 1/2 x .85 x 1 x 1
= .425 J
final kinetic energy
= 1/2 x .85 x .25 x .25
= .0265 J
Loss of kinetic energy
= .425 - .0265 J
= .3985 J
Work done by friction
= - .3985 J ( loss of kinetic energy is due to negative work by friction )
Answer:
Water scarcity (water stress or water crisis) is the lack of fresh water resources to meet the standard water demand. Humanity is facing a water crisis, due to unequal distribution (exacerbated by climate change) resulting in some very wet and some very dry geographic locations, plus a sharp rise in global freshwater demand in recent decades driven by industry. Water scarcity can also be caused by droughts, lack of rainfall, or pollution. This was listed in 2019 by the World Economic Forum as one of the largest global risks in terms of potential impact over the next decade.[1] It is manifested by partial or no satisfaction of expressed demand, economic competition for water quantity or quality, disputes between users, irreversible depletion of groundwater, and negative impacts on the environment.[2] Two-thirds of the global population (4 billion people) live under conditions of severe water scarcity at least 1 month of the year.[3][4][5][6] Half a billion people in the world face severe water scarcity all year round.[3] Half of the world's largest cities experience water scarcity.[5]
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