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IGCSE Edexcel Physics 2P

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I didn't say anything, but a friend put it's not in the human audio range or something like that and makes ense

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Reply 81

Ahmar0786

Was the last last question 0.667? The answer I mean

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Reply 82

Massoom

Original post by Ahmar0786

Was the last last question 0.667? The answer I mean

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I got 667 Hz

Reply 83

Massoom

Original post by Usamajk

For the second last question where they asked why it cant be heard, will i get the marks if i put two answers and one of them was right

You should do. Most mark schemes are marked positively, so if the correct thing is in there they will give you the mark, however if the correct answer is in the wrong context you can be given 0.

Reply 84

chazer154

for the 2A fuse, i put 'test the fuse by putting it in a plug', along with a series circuit with an ammeter connected and a variable resistor. then, adjust the variable resistor so that the current is less than 2 amps. then gradually decrease the resistance so that if it exceeds 2A and the fuse blows, then the label is correct.

Reply 85

Massoom

Original post by Ahmar0786

I didn't say anything, but a friend put it's not in the human audio range or something like that and makes ense

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Yes human audio range is 20-20000 Hz, so 27000Hz cannot be heard

Reply 86

chazer154

for the eye one i put the radioactive particles emitted from the glass can penetrate through the eye, causing the person to become ill from the radiation.

Reply 87

chazer154

Original post by Ahmar0786

Was the last last question 0.667? The answer I mean

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i got 667 as well....

Reply 88

TH3-FL45H

Original post by Ahmar0786

Was the last last question 0.667? The answer I mean

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You had to convert 1.5 milliseconds into 0.0015 seconds

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Reply 89

Sorlenix

Can someone tell me the answer to the roll one and how friction causes the roll to be electrically charged?

Reply 90

TH3-FL45H

Original post by Sorlenix

Can someone tell me the answer to the roll one and how friction causes the roll to be electrically charged?

I put about static electricity and how electrons is scraped off of one object onto the other

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Reply 91

chazer154

Original post by Sorlenix

Can someone tell me the answer to the roll one and how friction causes the roll to be electrically charged?

so when the tape is removed from the roll, electrons are transferred. this is because the tape scrapes electrons off from the roll, meaning the tape has a negative charge, and electrons stick to the tape.

Reply 92

typicalvirgo

The one for static electricity said an object not the tape so would I still get marks for explaining what happens but using a rod and cloth as an example?