'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 欧姆定律知识归纳 1.欧姆定律:导体中的电流,与导体两端的电压成正比,与导体的电...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 电压和电阻 电压(U):电压是使电路中形成电流的原因,电源是提供电压的装置。 电压...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 热学学习口诀 冷热表示用温度,热胀冷缩测温度; 冰点零度沸点百,常用单位摄氏度。...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 热学学习口诀 冷热表示用温度,热胀冷缩测温度; 冰点零度沸点百,常用单位摄氏度。...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 热量的计算 1. 热量的计算公式 (1)吸热公式:Q吸=cm(t-t0)。 (2)放热公式:Q放=cm(t0-t)。 (...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 比热容 1. 定义:一定质量的某种物质,在温度升高(或降低)时吸收(或放出)的热量与它的...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 燃料的热值: (1)概念:1千克的某种燃料完全燃烧所放出的热量,叫做这种燃料的燃烧值...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 内能: (1)概念:物体内部所有分子热运动的动能和势能的总和。 (2)内能大小与温度有关...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 分子动理论: (1)物质是由分子组成的; (2)一切物质的分子都在不停地做无规则运动 (扩散...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 比热容: (1)物理意义:表示不同物质吸热能力的差异。 (2)概念:单位质量的某种物质,...