Joule is the unit of energy used by the International Standard of Units (SI). It is defined as the amount of work done on a body by a one Newton force that moves the body over a distance of one meter. Wait a minute … is it a unit of energy or a unit of work? Actually, it ...
A joule is the SI unit of energy, representing the amount of work done when a force of one newton is applied over a meter, while an erg is a much smaller unit, used in the CGS system, equal to 10^-7 joules.
A joule is defined as the amount of energy transferred to an object when a force of one newton acts on the object in the direction of its motion through a distance of one meter (1 newton meter or Nm). It can also be defined as energy dissipated as heat when an electric current of ...
Power is the rate at which work is done. What is the unit of power? A. joule B. watt C. newton D. kilogram 相关知识点: 试题来源: 解析 B。A 选项 joule 是焦耳,是能量的单位;C 选项 newton 是牛顿,是力的单位;D 选项 kilogram 是千克,是质量的单位;B 选项 watt 是瓦特,是功率的单位。
To get an idea of how much energy a joule actually is, it helps to look at some everyday examples. A joule is the amount of energy needed to raise the temperature of 1 gram of cool, dry air by 1.8°F (1.0°C). An average person sitting quietly produces 100 J of heat every secon...
When we push a box, we are applying a force. What is the unit of force? A. joule B. watt C. pascal D. newton 相关知识点: 试题来源: 解析 D。A 选项 joule 是焦耳,是能量的单位;B 选项 watt 是瓦特,是功率的单位;C 选项 pascal 是帕斯卡,是压强的单位;D 选项 newton 是牛顿,是力的...
Kilowatt (kW):A kilowatt is a measure of power, indicating the rate at which energy is used or produced. It’s equivalent to 1,000 watts. For instance, a 1kW heater uses energy at a rate of 1,000 watts when it’s on. Hour:This represents the duration or the amount of time the ...
The potential energy is the work required to move a positive charge in the presence of an electric field. This potential energy per unit test charge is defined as the voltage. The voltage is also known as the potential difference between the two points. The potential energy is one form of ...
The joule (symbol: J) is the basicSI unitofenergy. A joule is equal to thekinetic energyof a kilogrammassmovingat the speedof one meter per second (one joule is a kg⋅m2⋅s−2). Alternatively, it is the amount of work done on an object when a force of onenewtonacts in the...
解析 International System of Units of measurement in which the fundamental units are standardised.Examples include:metre,kilometre,ampere,gray,joule,Sievert,Becquerel.Origin:Fr.Le Systeme International d'U...结果一 题目 What is the SI unit for energy? SI 是什么单位?是什么能的单位? 答案 ...