25 points for good bad ones will be ! give examples on how each of the following can be used, how it affects things, or examples of them. (scientific/ physics answers) 1. energy 2. normal force 3. efficiency 4. performance 5. simple machines 6. mechanical advantage 7. ratio

1 The electric power sector generates most of the electricity in the United States, and the other four sectors consume most of that electricity. ... For example, petroleum provides about 92% of the energy used for transportation, but only 1% of the energy used to generate electricity.

2 In a simple case such as an object resting upon a table, the normal force on the object is equal but in opposite direction to the gravitational force applied on the object (or the weight of the object), that is, , where m is mass, and g is the gravitational field strength (about 9.81 m/s2 on Earth).

3 Efficient energy use, sometimes simply called energy efficiency, is the goal to reduce the amount of energy required to provide products and services. For example, insulating a home allows a building to use less heating and cooling energy to achieve and maintain a comfortable temperature.

4 A performance appraisal is a formal process used to assess an employee's effectiveness and productivity and serves both administrative and developmental purposes. Administratively, it helps guide decision-making regarding employment actions, personnel planning and training and development.

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6 Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever.

7Ratio analysis is used to evaluate various aspects of a company's operating and financial performance such as its efficiency, liquidity, profitability and solvency.