Miss Hill taught physics in a school in London.She was explaining to one of her classes about sound,and she decided to test (测验) them to see haw well she had been in her work.She said,"Now,I have a sister in Washington.If I was call?ing her on th
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 15:40:12
Miss Hill taught physics in a school in London.She was explaining to one of her classes about sound,and she decided to test (测验) them to see haw well she had been in her work.She said,"Now,I have a sister in Washington.If I was call?ing her on th
Miss Hill taught physics in a school in London.She was explaining to one of her classes about sound,and she decided to test (测验) them to see haw well she had been in her work.She said,"Now,I have a sister in Washington.If I was call?ing her on the telephone,and at the same time you were 25 metres away,and listened to me from the other side of the street,who would hear me first,my sister or you?And why?" :
The cleverest boy answered at once,"Your sister,Miss Hill,because electricity (电) travels faster than sound waves (声波)."
"That's very good," Miss Hill agreed.But then one of the girls put up her hand,and Miss Hill said,"Yes,Kate?"
"I don't agree," Kate said."Your sister would hear you earlier because when it's.11:00 here,it is only 6:00 in Washington."
3q
Miss Hill taught physics in a school in London.She was explaining to one of her classes about sound,and she decided to test (测验) them to see haw well she had been in her work.She said,"Now,I have a sister in Washington.If I was call?ing her on th
Hill小姐在伦敦的一所学校里教物理.她向她的一个班级解释声音(的原理),她想做个测验来检测她这堂课的效果.她说“现在,我有一个姐姐在华盛顿.如果我打电话给她,与此同时你站在离我25米远的地方,从街的另一头听我讲的话,谁会先听到我讲的话?是我姐还是你?为什么?”
一个最聪明的学生马上回答“是你姐姐,Hill小姐,因为电传输的比声音快”
“很好”Miss Hill赞同的说.但是另一个女孩举起手,Miss Hill说:“嗯,Kate ”
“我不赞同”Kate说,“你姐姐会先听到是因为当这里是11点的时候,华盛顿是6点.
完成于6月13日20:24,记得加分~