Answer:
A wind turbine transforms the mechanical energy of wind into electrical energy. A turbine takes the kinetic energy of a moving fluid, air in this case, and converts it to a rotary motion.
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# Cary on learning
Answer:
B
Explanation:
the equal of the shell is b
Answer:
There is a direct relationship between pH and concentration. I.e
pH= -log[H+]
Explanation:
As the concentration of a solution changes, the H+ concentration changes hence from the relationship pH= -log[H+] the pH also changes
The amount of substance present in a certain object with a given half-life in terms of h can be expressed through the equation,
A(t) = (A(o))(0.5)^(t/h)
where A(t) is the amount of substance after t years and A(o) is the original amount. In this item we are given that A(t)/A(o) is equal to 0.89. Substituting the known values,
0.89 = (0.5)(t / 5730 years)
The value of t from the equation is 963.34 years.
<em>Answer: 963 years</em>
