frequency( f ) :unit = Hz = s-1
period( T ) : unit = s
wave speed( v )
why
f = 1/T
How to solve:
a transverse pulse is travelling to the right at a speed of 0.05m s-1. state the time elapsed for the pulse.
ｗａｖｅｌｅｎｇｔｈ ＝ ６ｃｍ
ｔ ＝ ０ｓ
ｔｈｘ～
怎樣計wave既frequency, period, 同wave speed
2007-08-17 10:02 pm
回答 (2)
2007-08-18 7:48 am
✔ 最佳答案
v=ƒ λ0.05 = ƒ ( 0.06)
ƒ =0.833 Hz
T=1/ ƒ
T=1/0.833
T=1.2 s
o‧°●╔╦╗ ╔╦╗ ╔╦╗ ╔╦╗○‧°o‧°
‧°o‧°○╠希╣.╠望╣.╠幫╣.╠到╣你 啦~● ‧°o‧°
‧°o‧°●╚╩╝ ╚╩╝ ╚╩╝ ╚╩╝○ ‧°o‧
∴☆
╭╯╰╮ ﹒☆☆°．﹒☆‧°∴°﹒°☆
2007-08-18 10:32 pm
每當你要計算頻率，波長，時間 如下
A
已有波長 = 5cm，[ 1m=100cm ]
頻率 = 300/0.05 = 6GHz，= 6000Mhz
時間 = [ 1/f ] = 1/6000Mhz = 0.000166s =0.166ms
= [ λ/300 ] = 0.05 / 300
= [ 1/t ] = 1 / 0.000166 s
B
已有波長 = 6cm
頻率 = 300/0.06 = 5GHz = 5000Mhz
時間 = [ 1/f ] = 1/5000Mhz = 0.0002 s
= [ λ/300 ] = 0.06 / 300
= [ 1/t ] = 1 / 0.0002 s =
但係，我唔明白你既 t = 0s
A
已有波長 = 5cm，[ 1m=100cm ]
頻率 = 300/0.05 = 6GHz，= 6000Mhz
時間 = [ 1/f ] = 1/6000Mhz = 0.000166s =0.166ms
= [ λ/300 ] = 0.05 / 300
= [ 1/t ] = 1 / 0.000166 s
B
已有波長 = 6cm
頻率 = 300/0.06 = 5GHz = 5000Mhz
時間 = [ 1/f ] = 1/5000Mhz = 0.0002 s
= [ λ/300 ] = 0.06 / 300
= [ 1/t ] = 1 / 0.0002 s =
但係，我唔明白你既 t = 0s
收錄日期: 2021-04-23 22:30:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070817000051KK02205