本课配套习题挑战模式1/5
一杯水温度从40℃上升到60℃ ,所吸收的热量为Q1 ;从70℃降低到50℃ ,所放出的热量为Q2,则( )
A: Q1<Q2 |
B: Q1>Q2 |
C: Q1=Q2 |
D: 无法比较 |
- 提示1:PHA+6LSo6YeP55u45ZCM55qE5ZCM56eN54mp6LSo77yM5ZC45pS25oiW5pS+5Ye655qE54Ot6YeP6Lef54mp5L2T5rip5bqm55qE5Y+Y5YyW6YeP5oiQ5q2j5q+UPC9wPg==
- 答案:Qw==
PGRpdj7otKjph4/nm7jlkIznmoTlkIznp43nianotKjvvIzlkLjmlLbmiJbmlL7lh7rnmoTng63ph4/ot5/niankvZPmuKnluqbnmoTlj5jljJbph4/miJDmraPmr5TvvIzlj5jljJbnmoTmuKnluqbnm7jlkIzvvIzliJnor7TmmI7lkLjmlLbmiJbmlL7lh7rnmoTng63ph4/nm7jlkIzvvIxD5q2j56GuPC9kaXY+
本课配套习题挑战模式2/5
初温相同,质量分别为1kg和2kg的铜块,吸收相同的热量后,充分接触,则()
A: 质量大的铜块把温度传递给质量小的铜块 |
B: 质量大的铜块把热量传递给质量小的铜块 |
C: 质量小的铜块把热量传递给质量大的铜块 |
D: 二者没有热传递 |
- 提示1:PHA+Jm5ic3A754Ot6YeP5piv5LuO5rip5bqm6auY55qE54mp5L2T5Lyg5Yiw5rip5bqm5L2O55qE54mp5L2TPGJyPjwvcD4=
- 提示2:PHA+5ZC45pS255u45ZCM54Ot6YeP77yM6LSo6YeP5bCP55qE6ZOc5Z2X5Y2H6auY55qE5rip5bqm6auY44CCPGJyPjwvcD4=
- 答案:Qw==
PGRpdj7ng63ph4/nmoTkvKDpgJLlj6rkuI7kuKTniankvZPnmoTmuKnluqbmnInlhbPvvIzlkLjmlLbnm7jlkIznmoTng63ph4/vvIzotKjph4/lsI/nmoTvvIzkuIrljYfnmoTmuKnluqbpq5jvvIzng63ph4/mmK/ku47muKnluqbpq5jnmoTniankvZPkvKDliLDmuKnluqbkvY7nmoTniankvZPvvIzliJnpgInpoblD5q2j56GuPC9kaXY+
本课配套习题挑战模式3/5
质量为200g的水,温度由50℃变为100℃,需要吸收多少热量()
A: 4.2×104J |
B: 4.2×103J |
C: 2.1×103J |
D: 2.1×104J |
- 提示1:PHA+5ZC45pS254Ot6YePUT1jbe+8iHQtdDxzdWI+MDwvc3ViPu+8iTwvcD4=
- 答案:QQ==
PGRpdj7lkLjmlLbng63ph49RPWNt77yIdC10PHN1Yj4wPC9zdWI+77yJPC9kaXY+PGRpdj49NC4yw5cxMDxzdXA+Mzwvc3VwPkova2figKLihIPDlzIwMGfDl++8iDEwMOKEgy01MOKEg++8iTxicj48L2Rpdj48ZGl2Pj00LjLDlzEwPHN1cD40PC9zdXA+SjwvZGl2Pg==
本课配套习题挑战模式4/5
用同一个电热器分别给铜和铁加热(设电热器放出热量被物体完全吸收),铜和铁升温一样快(已知:C铁>C铜)。下列判断正确的是( )
A: 铁的质量大于铜的质量 |
B: 铁的质量等于铜的质量 |
C: 铁的质量小于铜的质量 |
D: 升温快慢与铁和铜的质量无关 |
- 提示1:PHA+UT1jbe+8iHQtdDxzdWI+MDwvc3ViPu+8iTwvcD4=
- 提示2:PHA+54Ot6YeP55u45ZCM77yM5Y+Y5YyW5rip5bqm55u45ZCM77yM5q+U54Ot5a655aSn55qE6LSo6YeP5bCPPC9wPg==
- 答案:Qw==
PGRpdj7moLnmja5RPWNt77yIdC10PHN1Yj4wPC9zdWI+77yJ77yM5Y+v55+l54Ot6YeP55u45ZCM77yM5Y+Y5YyW5rip5bqm55u45ZCM77yM5q+U54Ot5a655aSn55qE6LSo6YeP5bCP77yM5YiZQ+ato+ehrjwvZGl2Pg==
本课配套习题挑战模式5/5
将1kg的水从40℃降到20℃所释放的热量能让1kg的煤油(C煤油=2.1×103J/(kg•℃))从50℃增大到多少()
A: 70℃ |
B: 60℃ |
C: 80℃ |
D: 90℃ |
- 提示1:PHA+UT1jbe+8iHQtdDxzdWI+MDwvc3ViPu+8iTwvcD4=
- 提示2:PHA+UTxzdWI+5rC0PC9zdWI+PVE8c3ViPueFpOayuTwvc3ViPjwvcD4=
- 答案:RA==
PGRpdj5RPHN1Yj7msLQ8L3N1Yj49YzxzdWI+5rC0PC9zdWI+bTxzdWI+5rC0PC9zdWI+77yIdC10PHN1Yj4wPC9zdWI+77yJPTQuMsOXMTA8c3VwPjM8L3N1cD5KL++8iGtn4oCi4oSD77yJwrcxS2fCt++8iDQw4oSDLTIw4oSD77yJPGJyPjwvZGl2PjxkaXY+UTxzdWI+54WkPC9zdWI+PTIuMcOXMTA8c3VwPjM8L3N1cD5KL++8iGtn4oCi4oSD77yJwrcxS2fCt++8iHQtNTDihIPvvIk8L2Rpdj48ZGl2PlE8c3ViPuawtDwvc3ViPj1RPHN1Yj7nhaTmsrk8L3N1Yj48L2Rpdj48ZGl2PuWPr+W+l0TmraPnoa48L2Rpdj4=