Power is the amount of work done in a given time interval.Show how the alternative definition of power can be derived by substituting the definitions of work and speed into the standard definition of power. P = W/∆t; W = Fd; speed = d/∆t thus P = W/∆t = Fd/∆t = Fv; Alternative definition of power: P = Fv.
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What is the alternative formula for power?
P=IV=(V/R)V=V2/R.
What is the best explanation of power?
Power is defined as the ability to act or have influence over others. An example of power is the strength needed to run five miles. An example of power is the authority a local government has to collect taxes. Power means to supply with energy or force.
What is the definition of power P )?
Electric power (P) is simply the product of current times voltage. Power has familiar units of watts. Since the SI unit for potential energy (PE) is the joule, power has units of joules per second, or watts.
Which statement describes how work and power are similar quizlet?
Work and power are similar in that D. You must know time and energy to calculate both. The work done would be the change in the mechanical energy of the system. The power dissipated would be the change in mechanical energy divided by the time taken.
What is the formula for measuring power?
Power is a measure of the amount of work that can be done in a given amount of time. Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s).
How many formulas are there for power?
Power = force multiplied by speed (velocity) P = F × v.
What is meant by power in society?
In social science and politics, power is the capacity of an individual to influence the actions, beliefs, or conduct (behaviour) of others.
What is power definition in science?
power, in science and engineering, time rate of doing work or delivering energy, expressible as the amount of work done W, or energy transferred, divided by the time interval t—or W/t.
Power is an entity’s or individual’s ability to control or direct others, while authority is influence that is predicated on perceived legitimacy. Consequently, power is necessary for authority, but it is possible to have power without authority.
What are powers in math?
The power of a number says how many times to use the number in a multiplication. Powers are also called Exponents or Indices. For example, 8^2 could be called “8 to the power 2” or “8 to the second power”, or simply “8 squared”.
What is work and power in physics?
Work, Energy and Power are fundamental concepts of Physics. Work is the displacement of an object when a force (push or pull) is applied to it. We define the capacity to do the work as energy. Power is the work done per unit of time.
What is power in Brainly?
Brainly User. Explanation: Power is defined as the ability to act or have influence over others.
How is work and power similar?
Work is the energy needed to apply a force to move an object a particular distance, where force is parallel to the displacement. Power is the rate at which that work is done.
What is the definition of power quizlet sociology?
Power. the ability of people or groups to exert their will over others and get their own way.
What is the difference between power and work?
Work is defined as the process of energy transfer to the motion of an object through the application of force. Power is defined as the amount of energy transferred in unit time.The SI unit of power is the watt.
What is power measured in?
Watts
Electricity is measured in units of power called Watts, named to honor James Watt, the inventor of the steam engine. A Watt is the unit of electrical power equal to one ampere under the pressure of one volt. One Watt is a small amount of power.
How do you calculate power energy?
The formula that links energy and power is: Energy = Power x Time. The unit of energy is the joule, the unit of power is the watt, and the unit of time is the second.
What is a power in physics?
In physics, power is the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt, equal to one joule per second.
What is the role of power in everyday life?
The amount of power you hold in your position or career can play a daily role in your life. A manager might be under stress because of his power.Another example of a power relationship in our lives relates to gender roles, which empower certain groups of people, often males, over others.
How is power used in everyday life?
People use electricity for lighting, heating, cooling, and refrigeration and for operating appliances, computers, electronics, machinery, and public transportation systems.