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。
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.
Well this is an interesting explanation of joule conversions. I can now finally quantify the impact of my solitude. As a quiet person, I emit 100 joules of energy every second! I am not sure if that’s a big or a high number, but I’ll bet that it’s on the low side since you...
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 ...
Mathematically, 1 joule = 1 Newton ⋅ meter. However, writing it as Newton ⋅ meter is discouraged since it can be easily confused with the unit of torque. Particle physics experiments deal with large amounts of energies. That is why it is also known as high energy physics. If you li...
Obviously, the total amount of energy remains the same, and energy cannot be lost or generated. This is the principle of energy conservation in an isolated system.Answer and Explanation: In the SI unit system, Joule (J) is considered as the largest unit of energy. 1 Joule is the amount ...
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...
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 ...
What is Joule's law? Thermodynamics: Thermodynamics refers to the study of the relationship between heat and the different forms of energy such as mechanical, electrical, and chemical energy. Energy in the form of heat is transferred from thermodynamic systems through several processes such as work...
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 ...