Una cuerda de piano produce una nota "do" medio vibrando primordialmente a 350 Hz. Calcule su periodo y su velocidad si se sabe que posee una longitu de onda de 3.5m. Calcule el periodo de una soprano que canta un la una octava más arriba, que tiene el doble de la frecuencia de la cuerda de piano

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

prndulum needs thread, weight clock to time swings

inverse v=i*r

nice nice