# Question: What Is Minimum Power?

## What is the minimum energy?

The principle of minimum energy is essentially a restatement of the second law of thermodynamics.

It states that for a closed system, with constant external parameters and entropy, the internal energy will decrease and approach a minimum value at equilibrium.

An isolated system has a fixed total energy and mass..

## How do you calculate power in thermodynamics?

If we consider the equation for power, P = Δ E / Δ t P = \Delta E / \Delta t P=ΔE/ΔtP, equals, delta, E, slash, delta, t, then this is the measurement we get when Δ t \Delta t Δt is extremely small.

## What is the 5 rule in physics?

The purpose of the 5% Rule is to give you the option of eliminating a vertical axis intercept. When you have a vertical axis intercept that you believe exists only because of error in your data, the 5% Rule can be invoked (if all conditions are met) and the intercept may be dropped from you mathematical equation.

## How do you find work physics?

Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m). One joule equals the amount of work that is done when 1 N of force moves an object over a distance of 1 m.

## Which phase of water has the most energy?

gasThe gas form water vapor has the highest internal energy per gram of water, followed by liquid water, and then ice.

## Can power be negative?

The sign of power is just a matter of definition. Energy can increase or decrease, but the energy itself cannot be negative. … As you said, power is just the time rate of change of energy, so it can be negative. But energy is only positive.

## How can I fix my electric bill?

To calculate your electric bill, you’ll need to figure the energy usage of each of the appliances and electronic devices in your home….How to Calculate Your Electric BillMultiply the device’s wattage by the number of hours the appliance is used per day.Divide by 1000.Multiply by your kWh rate.

## How do you find power using work and time?

Determine the time in which the work will be done. Here, we can take t = 60 s . Power is equal to work divided by time. In this example, P = 9000 J /60 s = 150 W .

## What is output power?

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. … The output power of a motor is the product of the torque that the motor generates and the angular velocity of its output shaft.

## How do you find minimum power?

Use the formula for power: Power = Voltage x Current, or P = VI. If you are trying to calculate the minimum load and you happen to only know the power and voltage ratings of your power supply, you can use the formula P = V2/R, which can become R = V2/P.

## Which state produces highest thermal power?

Top five states in India with highest installed electricity generation capacityTypeMaharashtraAndhra PradeshTotal Thermal23,41511,981Nuclear690276Hydro3,3323,735RES*4,4971,1844 more rows

## Which matter has the least energy?

Solid particlesSolid particles have the least amount of energy, and gas particles have the greatest amount of energy.

## What is the formula of power?

Power Formula 2 – Mechanical power equation: Power P = E ⁄ t where power P is in watts, Power P = work / time (W ⁄ t). Energy E is in joules, and time t is in seconds.

## Which state has minimum amount of energy?

solidMatter in its solid state has the lowest amount of thermal energy (for that type of matter).

## How do you find 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). Power may be measured in a unit called the horsepower.