Question

Read the passage carefully and answer the questions:

A source of sound is placed at one end of an iron bar two kilometer long and two sounds are heard at the other end at an interval of 5.6 seconds. If the velocity of sounds in air is 330 m/s.

Q1) The time taken by sound to travel 2 km in iron is-
a) 0.46 s b) 0.16 s c) 2.26 s d)3.36 s

Q2) Velocity of sound in iron is -
a) 2348 m/s b) 4348 m/s c)1300 m/s d) 5223 m/s

Answer 1

@Zarkon @Agent_Sniffles @AccessDenied @jazy @TranceNova @hba plz help

Answer 2

@Jonask @zordoloom

Answer 3

@thinker1

Answer 4

VELOCITY O0F SOUND IN AIR=330M/S THUS TIME TAKEN BY SOUND TO TRAVEL 2 KM IS (2000/330)S=6.06STHUS SOUIND TRAVEL IN IRON IN (6.06-5.6)S=0.46S

Answer 5

TYHUS VELOCITY OF SOUND IN IRON IS (2000/0.46)M/S=4347.8M/S

Answer 6

DO U UNDERSTTAND @Hares333

Answer 7

why you subtract 6.06-5.6??

Answer 8

BECAUSE THERE IS A TIME LAG OF 5.6 S IN BETWEEN THE SOUND RECIEVED DIRECT THROUGH AIR AND ONE RECIVED THROUGH IRON.SINCE SOUND TRAVELS FASTER IN METAL THAN AIR I HAVE SUBTARCTED THE TIME LAG FROM THE TIME TAKEN BY SOUND IN AIR TO KNOW TIME TAKEN TONTRAVELIN IRON .IF IT HAD BEEN A MEDIUM LESS DENSER THAN AIR INSTEAD OF ROD I WOULD HAVE ADDED WOUL

Answer 9

IS IT OK?

Answer 10

yaa..thnx...

Answer 11

U R WELCOME

Answer 12

TYHUS VELOCITY OF SOUND IN IRON IS (2000/0.46)M/S=4347.8M/S

this line????

Answer 13

@thinker1

Answer 14

VELOCITY OF SOUND IS =(DISTANCE TRAVERSED / TIME TAKEN)=(2000M/.46S)

Answer 15

ohkkk thnx again!!!

Answer 16

UR WELCOME AGAIN

Answer 17

can you help me in chemistry?

Answer 18

@thinker1

Answer 19

can you help me???

Answer 20

LET ME SEE WHAT IT IS

Answer 21

Water gas is an equimolar mixture of hydrogen and carbon monoxide. If 250 litres of water is burnt in air, calculate the following assuming both reactants and products are at same temperature and pressure.

\[2CO+O_2->2CO_2 ; 2H_2+O_2->2H_2O\]

Q1) Volume of carbon Dioxide produced-
a) 125 l b) 62.5 l c) 250 l d) 500 l

Q2) Volume of steam produced -
a) 62.5 l b) 250 l c) 125 l d) 375 l

Answer 22

@thinker1

Answer 23

IT IS STRANGE HOW CAN WATER BE BURNT (AS WRITTEN IN UR QUESTION)

Answer 24

@Hares333