barron sat 物理题
来源:学生作业帮 编辑:大师作文网作业帮 分类:英语作业 时间:2024/09/21 11:23:53
barron sat 物理题
BARRON'S SAT 物理 第10页(Diagnostic test 第15题)
The following five lengths of thin wire, all of which have the same diameter and length, are connected in a circuit to a battery:
(A)3 m of nichrome wire
(B)3 m of copper wire
(C)3 m of lead wire
(D)3 m of steel wire
(E)3 m of iron wire
14.In which length of wire is the current greatest
15.Which length of wire generates the greatest power?
答案:
14 B Copper has the least resistance of all the metals listed and therefore the greatest current.
15题答案选A,理由是:
Nichrome has the highest resistance of all the metals listed. Since power is proportional to resistance, nichrome generates the greatest power.
但我认为既然14题选b,15也应该选B..这里似乎应该使用P=U^2/R
BARRON'S SAT 物理 第10页(Diagnostic test 第15题)
The following five lengths of thin wire, all of which have the same diameter and length, are connected in a circuit to a battery:
(A)3 m of nichrome wire
(B)3 m of copper wire
(C)3 m of lead wire
(D)3 m of steel wire
(E)3 m of iron wire
14.In which length of wire is the current greatest
15.Which length of wire generates the greatest power?
答案:
14 B Copper has the least resistance of all the metals listed and therefore the greatest current.
15题答案选A,理由是:
Nichrome has the highest resistance of all the metals listed. Since power is proportional to resistance, nichrome generates the greatest power.
但我认为既然14题选b,15也应该选B..这里似乎应该使用P=U^2/R
两个 都选B 用应该用p=U*I 电压相等 电阻越大电流越小 copper的电阻最小 电流最大 所以 功率最大
SAT II 物理题(BARRON)
SAT Barron 3500 词汇表!
SAT barron 3500,感激不尽!
急需,北京地区哪里有卖《Barron 3500 words for SAT》 和《SAT Barron 800词汇表》
barron's sat 和barron't sat 2400有何不同?
sat 准备书籍《barron's sat 2400》和《barron'sat》(就是200多块的那本)我都要买么?
barron's how to prepare for the sat和barron's 2009 24th editi
Barron's how to prepare for the SAT与barron's the leader in t
请问一下,sat单词背barron+猴哥好还是barron+红宝?
barron's how to prepare for the sat I
Barron s How to Prepare for the SAT杭州哪有卖?
Barron's SAT的书新旧版本有影响吗?