Wave Intensity and Decibel - 题库网 (tiku.one)

1#

13.34: Which one of the following choices represents the base MKS utc,h8 d+nn4 e ap j*awe-d/2jinits for sound ite+4hac,d /n japije*8 w2nd- ntensity?

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

06.31: A sound increases its decibel reading frj *eow4j.u 3yzom 20 to 40 dB. This means that the intensity of the soundw3z*4 o.juje y

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

00.31: The average signal to noise ratio for a particular tape recorder is,v n1gwz-66s+bfu igh 50 decibels. This means that the 6 6s,+zh 1vbgi-gunwf loudness of an average reproduced signal is about how many times louder than the loudness of the tape noise?

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

01.35: The intensity of sound 10aj up-m 6xo*6hn:(zv6 1k kold meters from a tornado siren is a very loud 130 decibels. At what distance would you need to be for the intensit uvlmx-n6 o6zk* j1(:k6doa phy to drop to 90 decibels?

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

05.23: A person hears a single-frequency sound from a spw82pmu:xlj q8 eaker that emits sound uniformly in all directions. The person records the decibel level reading. Which of the following processes would increase the decib 8 m8l2qwpuxj:el reading the most?

A. The power output of the speaker is doubled.

B. The distance of the person to the speaker is halved.

C. The frequency of the sound is doubled.

D. The temperature of the air is doubled on the Kelvin scale.

E. The area over which the sound is transmitted is halved.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

账号		自动登录	找回密码
密码			立即注册

未使用图片

本次作答已使用