C. The metal block absorbs heat and its temperature rises. D. Heat has no E. ffect on the metal block. 相关知识点: 试题来源: 解析 C。本题考查热与金属块的关系。选项 A 金属块温度会变化,所以错误。选项 B 热不会让金属块消失,所以错误。选项 C 金属块吸收热温度会升高,正确。选项 D 热...
In simple terms, heat treatment is the process of heating the metal, holding it at that temperature, and then cooling it back. During the process, the metal part will undergo changes in its mechanical properties. This is because the high temperature alters the microstructure of the metal. And...
Aluminum is considered beneficial for electrical device managers. It is a great metal to be used in the construction of critical power cooling systems. Improvement in extrusion profile technology has made it possible to engineer heat sinks which call for a blend of greater strength and lighter weig...
What is the final temperature if 305 J of heat is added to 86.9 g of this metal initially at 20^oC? What is the specific heat in J/g degree Celsius for a metal sample with a mass of 95.6g which absorbs 841J of energy when i...
Heat pipe is a type of heat transfer element, with a heat transfer efficiency that can reach several tens of times that of metal. It is composed of three main components: a sealed shell, working fluid, and capillary structure. The working fluid absorbs heat and vaporizes from the higher tem...
What is A Heatsink?You are here: Home What is a heatsink? A heat sink is used in electronic devices to dissipate heat and prevent overheating. It is typically made of a metal such as aluminum or copper. It absorbs and transfers heat from the device’s central processing unit (CPU) or...
Ans:Heat is used to warm objects, boil water, fry eggs, and melt metal to construct automobiles. Heat is used to generate electricity in a thermal power plant for our daily lives. The term “temperature” refers to the measurement of how hot or cold something is. The temperature is expres...
compound. Any hydrogen compound that is bonded to anothermetal elementcan effectively be called a metal hydride. Generally, the bond is covalent in nature, but some hydrides are formed from ionic bonds. The hydrogen has anoxidationnumber of -1. The metal absorbs the gas, which forms the ...
aAn antifreeze solution (or refrigerant in the case of a DX earth-energy system), which has been chilled by the heat pump’s refrigeration system to several degrees colder than the outside soil, circulates through the piping and absorbs heat from the surrounding soil. 防冻液 (或冷冻剂在DX地...
Why is a measured amount of water needed to determine the specific heat of a metal object? How much heat (in J) does it take to raise the temperature of 25 g of water from 22.0degC to 40.0degC? How do you calculate the specific heat of a substance?