How was physics paper 4

[TaffsAsLevel]

the sensing devices in order : LDR, strain gauge and piezoelectric transducer

 

[Your-Blood]

I got mass of sun 2x10^30 I checked on google and it was correct hahaha

What Next ?

 

[TaffsAsLevel]

What Next ?

Which variant? Mine is 41 and if you are the same then what did you get for the last question on shm? Isn't it prportionality because mass of the oscillating body is not given. I forgot I think it's about EK and speed

 

[Your-Blood]

We were discussing 42 thanks for ruining the thread LOL

 

[TaffsAsLevel]

We were discussing 42 thanks for ruining the thread LOL

=(

 

[HunzaZ]

nd what about velocity being in m/s, i didn't convert it into m for velocity either !

We didn't have to, question clearly said use amplitude in cm that means velocity was in cm/s.

 

[FRENZYAMU]

No Amna I was just overthinking

dont name me

 

[HunzaZ]

dont name me

Oops my bad. Actually when people refer to me by my name, I tend to reply that way :s Forgot that you hadn't mentioned your real one hear, on to removing the reply!

 

[HunzaZ]

Here*

 

[HunzaZ]

dont name me

You delete the one you quoted me in

 

[surinr]

for 41 the first question wat was the the ratio of the gravitational field strength of earth and jupiter??

 

[Starry_night]

for 41 the first question wat was the the ratio of the gravitational field strength of earth and jupiter??

I put g=GM/r^2 for both of them and cancelled out GM from the ratio as this is constant for both planets. So the ratio turned out to be the ratio of the two radii squared... What did u do there?

 

[surinr]

yeah i did that too and i got an answer with 5 point something. i just want to verify that if thats correct

 

[ganapathynar]

We didn't have to, question clearly said use amplitude in cm that means velocity was in cm/s.

Nope they said velocity in m/s

 

[ganapathynar]

How did you guys do the acoustic impedance question last part. Why should high frequency ultrasound be used instead of low frequency?