To apply problem-solving strategy 12.1 standing waves and normal modes. a cellist tunes the c string of her instrument to a fundamental frequency of 65.4 hz . the vibrating portion of the string is 0.600 m long and has a mass of 14.4 g . with what tension must she stretch that portion of the string? what percentage increase in tension is needed to increase the frequency from 65.4 hz to 73.4 hz , corresponding to a rise in pitch from c to d?

not too sure thinking it will always be directed towards the centre of the earth. could be wrong not sure

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min