1 <span>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.</span>
2 <span>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).</span>
3 <span>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.</span>
4 <span>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.</span>
5
any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever.
6 <span>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.</span>
7<span>Ratio analysis is used to evaluate various aspects of a company's operating and financial performance such as its efficiency, liquidity, profitability and solvency.</span>
