Question

Item 1 Part A Where does the electric energy from windmills ultimately come from? Submit Request Answer Provide Feedback Reflect in ePortfolio mastering chemistry.com/myct/itemView7assignment Problemi 1245710

Answer 1

1. The electrical energy in the windmill comes from the kinetic energy of wind. Wind rotates the blades of the windmill resulting in generation of mechanical energy used to do various activities like pumping water, generating electricity.

2. All the options for aquifer are true

3. The process is called as eutrophication

4. Atmosphere has mass of approximately 5*10¹⁸  kg . So it is false.

Hydrogen do not make atmosphere flammable so false statement.

True stratosphere oxygen act as shield. So true statement.

False nitrogen is non flammable gas. Hence false statement.

Troposphere is lowest layer of atmosphere spanning 11km approximately. Hence true statement.

The overall composition of atmosphere changes with change in components like methane carbon dioxide etc