Total ~Energy = **1 2 m v 2 + 1 2 k x 2 = 1 2 k x f 2 = constant** . From the energy conservation, we can estimate that, by the time the block reaches x=0 position, its speed will be v(x=0)=√kmxf v ( x = 0 ) = k m x f .

Also, What is the formula to calculate work done?

FAQs on Formula for Work

Mathematically, the concept of work done W equals the force f times the distance (d), that is **W = f.** **d** and if the force is exerted at an angle θ to the displacement, then work done is calculated as W = f .

Hereof, How do you calculate total energy used?

As every engineer knows, energy calculation is straightforward. The unit of electrical energy is the kilowatt-hour (kWh), found by multiplying the power use (in kilowatts, kW) by the number of hours during which the power is consumed. **Multiply that value by the cost per kWh**, and you have the total energy cost.

Also to know How do I calculate power? **Power is equal to work divided by time**. In this example, P = 9000 J /60 s = 150 W .

What is current formula?

The relationship between current and resistance in an electric circuit. Current is usually denoted by the symbol I. Ohm’s law relates the current flowing through a conductor to the voltage V and resistance R; that is, V = IR. An alternative statement of Ohm’s law is **I = V/R.**

**20 Related Questions Answers Found**

Table of Contents

**What is the efficiency formula?**

Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula **r=P/C**, where P is the amount of useful output (“product”) produced per the amount C (“cost”) of resources consumed.

**What is the formula to calculate kWh?**

Here’s the Formula for Calculating Watts Into Kilowatt-Hours: **kWh = (watts × hrs) ÷ 1,000**.

**How do we calculate efficiency?**

The work efficiency formula is **efficiency = output / input**, and you can multiply the result by 100 to get work efficiency as a percentage.

**What is power write its formula?**

**P = W / t**. The standard metric unit of power is the Watt. As is implied by the equation for power, a unit of power is equivalent to a unit of work divided by a unit of time. Thus, a Watt is equivalent to a Joule/second.

**What is voltage drop formula?**

Voltage drop of the circuit conductors can be determined by multiplying the current of the circuit by the total resistance of the circuit conductors: **VD = I x R.**

**How do you calculate current bill?**

1 Unit = 1kWh. So the Total kWh = 1000 Watts x 24 Hrs x 30 Days = 720000 … Watts / hour. We want to convert it into electric units, Where 1 Unit = 1kWh.

…

Power Consumption of Typical Home Appliances in Watts.

Electrical Appliance | Power Wattage in Watts “W” |
---|---|

Clothes Iron | 1400 |

Dishwasher | 1300 |

Electric Kettle | 1700 |

**What is the formula for resistance in physics?**

Resistance has units of ohms (Ω), related to volts and amperes by **1 Ω = 1 V/A**. There is a voltage or IR drop across a resistor, caused by the current flowing through it, given by V = IR.

**What are examples of efficiency?**

Efficiency is defined as the ability to produce something with a minimum amount of effort. An example of efficiency is **a reduction in the number of workers needed to make a car**. The ratio of the effective or useful output to the total input in any system. Efficiency apartment.

**How do you measure work efficiency?**

Measuring Efficiency

**Divide the standard labor hours by the actual amount of time worked and multiply by 100**. The closer the final number is to 100, the more effective your employees are. For example, let’s say the standard labor hours for a certain project is 80 and the actual amount of time worked is 92.

**What are the efficiency ratio?**

An efficiency ratio **measures a company’s ability to use its assets to generate income**. … Some common efficiency ratios are accounts receivable turnover, fixed asset turnover, sales to inventory, sales to net working capital, accounts payable to sales and stock turnover ratio.

**How do I calculate my monthly kWh usage?**

100 watts x 4 hours = 400 watt‐hours = .

Add them together, and you’ll have your total daily kWh usage. Then multiply that **daily usage number by the number of days in the month** to calculate your monthly usage.

**How do you calculate monthly kWh?**

To calculate your kWH per month or per year, **just multiply by the number of days in that period**. Example: Over the course of a 30-day month, your fan would use (1.25 kWh / day) x (30 days / month) = 37.5 kWh per month.

**How do I calculate unit?**

So a 100-Watt bulb if kept on for 10 hours will consume: 100 x 10 = 1000 Watt-Hour = 1 Kilowatt-Hour (**kWH**) = 1 units (on your meter).

**What is efficiency and how is it calculated?**

The **efficiency** formula is: (Work output ÷ Work input) x 100% = **Efficiency**. The work output in this definition is considered to be the useful amount of work output – that is, all scrap, spoilage, and waste is excluded from the numerator.

**What is power example?**

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. … The definition of power is operating electrically or having strength or force.

**Is power equal to force times velocity?**

Calculating Power

Since work is force times displacement (W=F*d), and velocity is displacement over time (v=d/t), power equals force times velocity: **P = F*v**. More power is seen when the system is both strong in force and fast in velocity.

**How do I calculate wire size?**

Wire Sizing Chart and Formula

- Calculate the Voltage Drop Index (VDI) using the following formula:
- VDI = AMPS x FEET ÷ (% VOLT DROP x VOLTAGE)
- Determine the appropriate wire size from the chart below.

**What is the current formula?**

The current is the ratio of the potential difference and the resistance. It is represented as (I). The current formula is given as **I = V/R**. The SI unit of current is Ampere (Amp).

**What size wire do I need to run 300 feet?**

At 300 feet I would suggest going with the aluminum. The **#2 should** work just fine. With a full load of 60 amps, the voltage drop is the same as the #4 copper Ray quoted.