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Physics MCQ's Help!!!
- Thread starter Talha
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http://www.xtremepapers.me/CIE/International A And AS Level/9702 - Physics/9702_w03_qp_1.pdf
Q 16, 23, 30,40....
Help me plz
Q 16, 23, 30,40....
Help me plz
40 - the nucleus absorb an e inside meaning it takes in a negative charge which then neutralise 1 positive charge. so proton number decrease by 1 but inside the nucleus there is one extra electron so the total nucleon number increase by 1.
30 - using Q=It, u get Q= 7200 C. then, 1 Coulomb = 1/1.6x10^-19 electrons according to the definition. hence, 7200C = 7200/1.6 x 10^-19 = 4.5 x 10^22.
23 - the amplitude is obvious, but one thing u should remember is that the displacement-time graph cannot tell what type of waves that is.
16 - T is acting upwards, W and H are acting downwards, therefore, T = W + H. so obviously, T has the be the greatest in magnitude.
30 - using Q=It, u get Q= 7200 C. then, 1 Coulomb = 1/1.6x10^-19 electrons according to the definition. hence, 7200C = 7200/1.6 x 10^-19 = 4.5 x 10^22.
23 - the amplitude is obvious, but one thing u should remember is that the displacement-time graph cannot tell what type of waves that is.
16 - T is acting upwards, W and H are acting downwards, therefore, T = W + H. so obviously, T has the be the greatest in magnitude.
- Messages
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no dude ur ans is wrong.. ms says its C.. any1 plz explain q 16? hows its gonna be C?