16. What is the loudness of sound? What factors does it depend on? Solution: Loud sounds have high energy. Loudness directly depends on the amplitude of vibrations. It is proportional to the square of the amplitude of vibrations of sound. 17. Explain how bats use ultrasound to catch prey. Solution: Bats have the ability to produce high-pitched ultrasonic squeaks. These squeaks get reflected by objects, like prey, and return to their ears. This helps a bat to know how far its prey is. 18. How is ultrasound used for cleaning? Solution: Objects that need to be cleansed are put in a cleaning solution, and ultrasonic sound waves are passed through the solution. The high frequency of ultrasound waves helps in detaching the dirt from the objects. In this way, ultrasound is used for cleaning purposes. 19. Explain the working and application of a sonar. Solution: SONAR is an abbreviation for Sound Navigation and Ranging. It is an acoustic device used in measuring the direction, speed, and depth of underwater objects, such as shipwrecks and submarines, using ultrasound. Also, it is used to determine the depth of oceans and seas. A beam of ultrasonic sound is produced and travels through the seawater, which is transmitted by the transducer. When it reflects, an echo is produced, which is detected and recorded by the detector. It is then converted into electrical signals. The distance represented by ‘d’ of the under-water object is calculated from the time (represented as ‘t’) taken by the echo to return with speed (represented as ‘v’) is expressed as, 2d = v × t This method of measuring distance is also referred to as echo-ranging.
kaamayaab to bachche bornavita se, 💐 😁😁😜💐 purush rajanee gandha se aur... 😝😆 😎😉😉🌺 mahilayen Fair and Lovely se hote hai... 😆😀 😅😎🤩💐 baakee digri - vigri to sab mohamaaya hai bhai,,, 😎🤩🤗⚡️
hame to apno ne loota gero me kahan dam tha
tabhi sochu ki sala farm me gunpowder kese kaam tha.......
😂deop was really trolled because i saw deop's that video
Lol @deopboii
Lmao 🤣
Deop is best 😂
Wa wa wa wa😅😅
6:20 editor ne nashe kiye hai
6:19 😂😂😂
7:54
Modi got me daying😂😂😂😂😂😂😅😅
Edit:thanks for 1 like😢
He is laughing evil laugh, Meanwhile I am laughing Mutahar laugh 😂😂😂
Legends know deop is not AFK 😂😂
😅
No he is afk you didn't see his video
@@Not_aksh_ I saw 👀. He was trying to find who kill him. But he failed 😔
@@peal12 Oh yeah you're right 😀👍🏻
Late late comment ker deta hu like toh waise bhi nhi milte 😂
1:25 -1:27 lapis caught while scripting😅😂❤
1:27 😂
6:19 Mr Lapis Fav Meme 😂
I laughed for 5 min 😂😂😂😂😂
16. What is the loudness of sound? What factors does it depend on?
Solution:
Loud sounds have high energy. Loudness directly depends on the amplitude of vibrations. It is proportional to the square of the amplitude of vibrations of sound.
17. Explain how bats use ultrasound to catch prey.
Solution:
Bats have the ability to produce high-pitched ultrasonic squeaks. These squeaks get reflected by objects, like prey, and return to their ears. This helps a bat to know how far its prey is.
18. How is ultrasound used for cleaning?
Solution:
Objects that need to be cleansed are put in a cleaning solution, and ultrasonic sound waves are passed through the solution. The high frequency of ultrasound waves helps in detaching the dirt from the objects. In this way, ultrasound is used for cleaning purposes.
19. Explain the working and application of a sonar.
Solution:
SONAR is an abbreviation for Sound Navigation and Ranging. It is an acoustic device used in measuring the direction, speed, and depth of underwater objects, such as shipwrecks and submarines, using ultrasound.
Also, it is used to determine the depth of oceans and seas.
A beam of ultrasonic sound is produced and travels through the seawater, which is transmitted by the transducer. When it reflects, an echo is produced, which is detected and recorded by the detector. It is then converted into electrical signals. The distance represented by ‘d’ of the under-water object is calculated from the time (represented as ‘t’) taken by the echo to return with speed (represented as ‘v’) is expressed as,
2d = v × t
This method of measuring distance is also referred to as echo-ranging.
No senpai was harmed in this video
wdym
Drop is laughing in lapis trying to get slime block😂😂😂
Bro love from nepal! but at 1:27 there someboby said ''heha'' (deop)??
Second because ledis first 😂
Ha bhai koi bhi mil gya to recording chalu kar ke to hey guys😂😂
Lapis never disappoint us 🖤
Saap ko pal Raha tha DeOp 😂
Yoo lapis bhai isi tarha consistent raho
Meanwhile my brother watching deop video of 10,000 tnt and me be like gadari karbe
Yaa ni deopp ko apne marraa😂❤❤
Deop bhai be like i am in sky with this lmao kid
Guys anyone know why mrlapis have knockback in his sword it help him to escape from other players
Thank you lapis bhai firemc main 1m dene ke liye I am .KillerGod091
Nasa be like:tum ne to hamara kam kar Diya thank you 😂😂😂😂😂😂😂
kisi ne 1:27 pe deop ki voice notice ki 😂
Mai nay ki par I am not sure kay wo deop ki awaz thi😊
Oooo accha tumne kiya ye sab😂😂😂😂
....
What the hack dude so you were the one who did that 😂😂
Bro roast senpai spider at the end of the video
apne toh apne hote he dekhaa apne ko deop be like -_-
Mr. Lapis Bro ap hasata Bohot acche.35minit Ka video banao❤❤❤🎉🎉
Everyone anyone want to be manger of dc server Aaj launched kar ne wala hu
😂Kiskis ne deop ki bhi video dekha hai
L A P I S B H A I OP ❤
deop said in his video who is kill me
and the one only lapis
Noob learn english
Yes yes deop yes 😂
6:19 part best ever
Thanks For 130 subscribers
Now Road To 150 subscribers😢❤❤Pls Subscribe if u hate creeper
1:28 deop sound!!
Only legend hear deop laugh at 1:25
Yes bro😂😂 scripted hai kya??
@@Suy0gExtraz may bee
@@tulsirammeena4983kids vo Mr lapis hai 😂
@@THEAnime-wx1fqthen u don't know deop voice kiddo
Listen it carefully child
Yooo love from Nepal
Please build Nepal flag in lapata smp
Let's vote for
👇
De Op Ko Apne Mara Tha Mr Lapis
Bhai ye farm to PSD1 aur DEOP ka hai 1:03
Deop ke sath to scam ho gaya
i have same laugh like your evil laugh
Wah deop ki avaz ayi 1:27
😂😂
deop ke sath troll ho gya LOO
Hello bhai deopi video banaya hai usne bola hai Kaun mere Dil ko Tora😊😊
❤❤OP
when gamers make videos in hurry
This isn't lifesteal hmmmm suspicious 🤔
Deop ke sath kya kya Kiya lapis ne 😂😂
Mr lapis op in tha chat ❤❤
Bhai bahut parchar hai yrrr
Bhot Maza aya 😂😂😂😂🎉
I'm second because ladies first 😅😂
Dil day do lapis bhai love from Pakistan
[laugh]
Gym
Lapis Bhai aap na bolo na ki 2 moths bat subscribe Kar na ga
Hi bro pz shoutout in your next vidio
Lmaoooooooooooooooo
Mast deopboii bhai mast
Whar's wrong with you😂
😂😂😂😂😂
Deop just tell hahmmnn when u tell aree dosto popat hogaya
Op
Aa bhai aagya channel yaad
Bro senpai no 1 in afk killing
No2. Lapis
1:46 1:48 1:49 1:50
0:49
yes kea ho Gaye deop bhai
Lapis bhai ne afk player ko maarke apni aukat dikhadi 😅
I'm fast 😅
Psd bhaiya ka hai farm ❤❤
Aap ki awaaz kini achhi hai ❤❤
kaamayaab to bachche bornavita se, 💐 😁😁😜💐
purush rajanee gandha se aur... 😝😆 😎😉😉🌺
mahilayen Fair and Lovely se hote hai... 😆😀 😅😎🤩💐
baakee digri - vigri to sab mohamaaya hai bhai,,, 😎🤩🤗⚡️
lapis dont mess chaddi gang
Deop Say haii in sleeping
Hi lapis bhi big fan
ha Bhai
Scripted hai bhai 😂😂 1:27 who was laughing
Mr lapis okay
Arey mai hi hu gala kharab h bhai😂😂
@@MrLapis lmao
Hehehhehehehehhe
First
Big fan psd1
Evill 😂🤣🤣🤣🤣🤣 laugh
LAPIS OP
😂
First 🥇
Hehehehehehehehheheheh
Deopboii dakho😂
Lapis bhai I love your videos
Thank you
Galat galat up ko Bata denge Ham DOP ko badal denge
bhai deop chaddi gang ka member
the
In deop video see deop reaction 😂😂
AP tha,wo
LoL
#techno
Lapis bhai lapata