## What is magnitude of energy in erg?

≡ 1 erg. 1.6×10−7 J.

**What are the typical units for specific energy?**

The SI unit for specific energy is the joule per kilogram (J/kg).

**How much energy is a million joules?**

The megajoule (MJ) is equal to one million (106) joules, or approximately the kinetic energy of a one megagram (tonne) vehicle moving at 161 km/h (100 mph). The energy required to heat 10 L of liquid water at constant pressure from 0 °C (32 °F) to 100 °C (212 °F) is approximately 4.2 MJ.

### Is NM a unit of energy?

One newton-metre is the torque resulting from a force of one newton applied perpendicularly to the end of a moment arm that is one metre long. The unit is also used less commonly as a unit of work, or energy, in which case it is equivalent to the more common and standard SI unit of energy, the joule.

**What is erg a unit of?**

The erg is a unit of energy equal to 10−7 joules (100 nJ). It originated in the centimetre–gram–second (CGS) system of units. It has the symbol erg. The erg is not an SI unit.

**What is the unit of 1 joule?**

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. Named in honour of the English physicist James Prescott Joule, it equals 107 ergs, or approximately 0.7377 foot-pounds.

#### Is kWh a unit of energy?

The kilowatt-hour (symbolized kWh) is a unit of energy equivalent to one kilowatt (1 kW) of power expended for one hour (1 h) of time. 1 kWh = One thousand watt hours.

**What are the 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 is EJ unit?**

(metrology) Symbol for exajoule, an SI unit of work or energy equal to 1018 joules.

## What are the units of Joules?

One joule equals the work done (or energy expended) by a force of one newton (N) acting over a distance of one meter (m). One newton equals a force that produces an acceleration of one meter per second (s) per second on a one kilogram (kg) mass. Therefore, one joule equals one newton•meter.

**What is the SI unit of energy density?**

J/m3

Energy density | |
---|---|

SI unit | J/m3 |

Other units | J/L, W⋅h/L |

In SI base units | m−1⋅kg⋅s−2 |

Derivations from other quantities | U = E/V |