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😅😅
6:19 😂😂😂
6:19 Mr Lapis Fav Meme 😂
I laughed for 5 min 😂😂😂😂😂
@@venkatmore8089😂😂😂
6:20 editor ne nashe kiye hai
He is laughing evil laugh, Meanwhile I am laughing Mutahar laugh 😂😂😂
1:25 -1:27 lapis caught while scripting😅😂❤
True
False
Heh???
1:27 😂
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 😀👍🏻
No
Drop is laughing in lapis trying to get slime block😂😂😂
Ha bhai koi bhi mil gya to recording chalu kar ke to hey guys😂😂
Late late comment ker deta hu like toh waise bhi nhi milte 😂
Mr. Lapis Bro ap hasata Bohot acche.35minit Ka video banao❤❤❤🎉🎉
Yaa ni deopp ko apne marraa😂❤❤
Oooo accha tumne kiya ye sab😂😂😂😂
Yoo lapis bhai isi tarha consistent raho
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.
Modi got me daying😂😂😂😂😂😂😅😅
Edit:thanks for 1 like😢
Dost log harami hi hote hein.😂😂😂😂
kisi ne 1:27 pe deop ki voice notice ki 😂
Mai nay ki par I am not sure kay wo deop ki awaz thi😊
Second because ledis first 😂
Laugh bohot funny hai😂😂😂😂
No senpai was harmed in this video
wdym
Saap ko pal Raha tha DeOp 😂
Yooo love from Nepal
Please build Nepal flag in lapata smp
Let's vote for
👇
Lapis never disappoint us 🖤
Bro 1:27 pe deop ki awaaz thi kya ?
Thank you lapis bhai firemc main 1m dene ke liye I am .KillerGod091
....
What the hack dude so you were the one who did that 😂😂
So funny 😂😂😂😂😂😂😂😂😂😂
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
Bro love from nepal! but at 1:27 there someboby said ''heha'' (deop)??
😂Kiskis ne deop ki bhi video dekha hai
6:19 part best ever
L A P I S B H A I OP ❤
Hello bhai deopi video banaya hai usne bola hai Kaun mere Dil ko Tora😊😊
Bhot Maza aya 😂😂😂😂🎉
I'm second because ladies first 😅😂
Meanwhile my brother watching deop video of 10,000 tnt and me be like gadari karbe
Deop ke sath kya kya Kiya lapis ne 😂😂
2:01 shayad deop pehle push ho ke hila phir keyboard se hila = deop afk ni tha
Bhai ye farm to PSD1 aur DEOP ka hai 1:03
Mr lapis op in tha chat ❤❤
Jaldi jaldi comment kar deta hu likes milenge 😂
Abe bas kr bhutni ke trend khatam ho gya
X faraday
Oi mei yaad hoon oglala ug_gaming_12_op bhai @oglala2007
Thenga milega chahiye asale 😡😡😡😡
Bro you copied my profile
Thanks For 130 subscribers
Now Road To 150 subscribers😢❤❤Pls Subscribe if u hate creeper
Bhai apne betrayed kyun kiya😢 psd ko muera dil toot gya😢😢😢
apne toh apne hote he dekhaa apne ko deop be like -_-
11:00 the Haker only type this
Guys anyone know why mrlapis have knockback in his sword it help him to escape from other players
Wah deop ki avaz ayi 1:27
Kon kon 2024 me dakhal kaha hai 😂😂
deop said in his video who is kill me
and the one only lapis
Noob learn english
Aap ki awaaz kini achhi hai ❤❤
hamare bbhai ka laugh op in the cccomment section
Bro roast senpai spider at the end of the video
Scripted hai bhai 😂😂 1:27 who was laughing
Mr lapis okay
Arey mai hi hu gala kharab h bhai😂😂
@@MrLapis lmao
😂😂😂😂😂
Lapis Bhai aap na bolo na ki 2 moths bat subscribe Kar na ga
Yes yes deop yes 😂
Everyone anyone want to be manger of dc server Aaj launched kar ne wala hu
De Op Ko Apne Mara Tha Mr Lapis
Psd bhaiya ka hai farm ❤❤
Lapis bhai ne afk player ko maarke apni aukat dikhadi 😅
Lapis bhai ap ne pandit Ji kab aaenge 🥺🥺🥺😭😭😭😭🥺🥺😭🥺🥺🥺😭
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,,, 😎🤩🤗⚡️
Whar's wrong with you😂
Deopboii dakho😂
❤❤OP
Ajj meri sadhi hai
Sab attendance lagao
👇👇
This isn't lifesteal hmmmm suspicious 🤔
Deop bhai be like i am in sky with this lmao kid
Deop ke sath to scam ho gaya
Aa bhai aagya channel yaad
deop ke sath troll ho gya LOO
7:29
Hi bro pz shoutout in your next vidio
Big fan psd1
I'm fast 😅
when gamers make videos in hurry
How I join Lapta smp❤❤❤
Hem😂😂😂
Deop just tell hahmmnn when u tell aree dosto popat hogaya
Bro senpai no 1 in afk killing
No2. Lapis
MR LAPIS APNA SUBSCRIBERS KA LIYA LIFESTEAL SMP BANAO PLZ BRO 30/30 PLZ BRO 😢
First 🥇
i have same laugh like your evil laugh
In deop video see deop reaction 😂😂
😂😂
0:49
Lapis bhai I love your videos
Thank you
Evill 😂🤣🤣🤣🤣🤣 laugh
DOP bhai ke aage koi bol sakta hai kya adop bhai
Bhai bahut parchar hai yrrr
Hi lapis bhi big fan
yes kea ho Gaye deop bhai
Galat galat up ko Bata denge Ham DOP ko badal denge
First comment 🥇
DIPU BHAI AAP HAME CHOOD KE KYU GAYE 😢💔
Mast deopboii bhai mast
DOP bhai ke aage koi bol sakta hai kya yah DOP bhai
lapis dont mess chaddi gang