Explanation:
Single displacement reaction is defined as the reaction in which more reactive element displaces a less reactive element from its chemical reaction. The reactivity of metal is determined by a series known as reactivity series. The metals lying above in the series are more reactive than the metals which lie below in the series
Wind turbines generate electricity by following a simple principle. Moving wind transfers energy to the blades of the windmill, which results in spinning of the blades. These blades are connected to an internal shaft which also starts spinning. This spinning of the shaft generates electricity, which is further distributed to electrical substations to provide electricity to homes and businesses.
<h3>What is a wind turbine?</h3>
Wind turbines work by creating kinetic energy when the power of the wind makes their blades spin. This kinetic energy is converted into electrical energy.
Thus, the steps describing how a wind turbine functions are,
Step 1: Wind moves the blades of the turbine.
Step 2: Internal shaft spins
Step 3: Generator produces electricity
Step 4: Distribution lines carry electricity to substation
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C) sound waves do not travel in a vacuum. It's also true
Answer:
c. A doctoral degree.
Explanation:
A doctorate degree refers to an academic degree (certificate) awarded to a post-graduate student by a tertiary institution (university or college) after the completion of his or her educational Programme. This doctorate programme usually takes a minimum of two (2) years to complete, as well as haven fulfilled the obligation of writing an approved theses.
Most tertiary institutions has made it a prerequisite for all applicants who are interested in being a lecturer (teacher) or research inclined positions, to possess a minimum of a doctorate degree.
Hence, a doctoral degree is necessary for individuals interested in researching and teaching positions.
