# Short-Questions

Fast solutions for complex problems

32

## What are 4 units of energy?

Common Units of energy

• Barrel of oil.
• Calorie.
• Horsepower.
• Joule (J)
• Kilowatt-hour (kWh)
• Kilowatt (kW)
• Megajoule (MJ)
• Megawatt (MW)

What are the bigger units of energy?

Hint: Electron volt, erg, joule and calorie all are the units of energy. Convert electron-volt, erg and calorie to joule and find out which of the following has the highest value. Thus, the highest value is 4.18 joule. Thus, the unit that represents the largest amount of energy is calorie.

What is a unit of energy called?

The SI unit of energy/work is the joule (J), named for English physicist James Prescott Joule (1818 – 1889). One joule equals the work done by a force of one newton moving an object one meter (J = N · m).

### Is W SA unit of energy?

A related unit is the Watt, which is a unit of power (energy per unit time). Power units can be converted to energy units through multiplication by seconds [s], hours, [h], or years [yr]. For example, 1 kWh [kilowatt hour] = 3.6 MJ [megaJoule].

What is the smallest unit of energy?

The Planck constant is. J s. Planck’s constant represents the smallest energy unit, which moves at the speed of light; it is a photon.

What are not units of energy?

Joule, Calorie, eV, Kilowatt hour; all are the units of energy. Watt is not the unit of energy. It is the SI unit of electric power.

#### Which is the largest unit in which we live?

Kilometer (Km)is the largest unit of metric measurement.

How do you calculate work?

The formula for work is , work equals force times distance. In this case, there is only one force acting upon the object: the force due to gravity. Plug in our given information for the distance to solve for the work done by gravity.

How do we calculate energy?

In classical mechanics, kinetic energy (KE) is equal to half of an object’s mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

## What is the smallest unit of time?

zeptosecond
Scientists have measured the world’s smallest unit of time, and it’s called the zeptosecond. It was recorded by a group of scientists at Goethe University, in Germany and published in the Science journal.

What is the smallest unit of work?

A work package is a group of related tasks within a project. Because they look like projects themselves, they are often thought of as sub-projects within a larger project. Work packages are the smallest unit of work that a project can be broken down into when creating your Work Breakdown Structure (WBS).

What is meant by 1 joule work?

Joule, unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre. In electrical terms, the joule equals one watt-second—i.e., the energy released in one second by a current of one ampere through a resistance of one ohm.

### Which is the smallest and largest unit of energy?

smallest unit of energy is electron volt (eV) and largest unit of energy is kilowatt-hour (kWh) plz be quickr in the answers !!

How are the units of energy in food measured?

In many regions, food energy is measured in large calories or kilocalories equalling 1000 calories, sometimes written capitalized as Calories. In the European Union, food energy labeling in joules is mandatory, often with calories as supplementary information.

Which is an example of an atomic unit of energy?

An energy unit that is used in atomic physics, particle physics and high energy physics is the electronvolt (eV). One eV is equivalent to 1.60217653×10−19 J. The Hartree (the atomic unit of energy) is commonly used in calculations.

#### Which is an energy unit used in particle physics?

An energy unit that is used in atomic physics, particle physics and high energy physics is the electronvolt (eV). One eV is equivalent to 1.602 176 53 × 10−19 J . In spectroscopy the unit cm −1 = 0.000 123 986 eV is used to represent energy since energy is inversely proportional to wavelength from the equation. E = h ν = h c / λ.