The megajoule is approximately the kinetic energy of a one megagram (tonne) vehicle moving at 161 km/h (100 mph). [ citation needed ] 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 .

2023年11月17日 · The megajoule (MJ) is a unit of energy commonly utilized in scientific and engineering fields. It denotes one million joules, the measure of the energy required to produce heat or perform work. As the prefix mega implies, the megajoule is ideal for measuring and quantifying large amounts of energy for diverse applications.

MJ是一个热值单位，即兆焦耳（mega joule，MJ）。1焦耳是指用1牛顿（N）力把物体移动1m所需要的能量。 1000J等于1千焦耳（kilo joule，KJ）；1000KJ等于1兆焦耳。

A megajoule is a unit of energy in the International System of Units. The symbol for megajoule is MJ. The base unit for a megajoule is joule and the prefix is mega. The prefix mega is derived from the Greek megas meaning great and is symbolized as M. Mega denotes a factor of a million which means that there are 1,000,000 joules in a megajoule.

英文名称：Megajoule 根据重力势能公式：, 那么 1兆焦 （MJ） 的能量（功）足足可以把 一吨 的重物提到 100m 高处。 根据动能公式：E=1/2 MV^2 , 通常当一辆轿车（ 1.5吨 计）以 时速 130 公里 行驶时，它所具有的动能为 1兆焦 。

兆焦耳（Megajoule，MJ）同样是一个能量单位，等于10^6焦耳（J）。 兆焦耳在日常生活中较为常见，如食品能量、家庭电器的能耗等。 兆焦耳的前缀“兆”（Mega）代表一百万，因此1 MJ等于1,000,000焦耳。

A megajoule is a unit used to measure energy. The megajoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "mega" is the prefix for millions, or 10 6. Megajoules can be abbreviated as MJ; for example, 1 megajoule can be written as 1 MJ. How Much Is a Megajoule?

megajoule，英语单词，主要用作名词，作名词时译为“兆焦（米千克秒单位制功或能的单位）”。

The megajoule is a multiple of the unit joule (J) for energy. The International System of Units (SI) defines the prefix mega (M) as a factor of one million or 10⁶ or 1000000. Per this definition, one megajoule is 10⁶ joules.

A Megajoule (MJ) is a unit of energy equal to one million joules. How is a Megajoule used in daily life? It measures the energy in food, fuels, and electrical power usage.