Um tanque grande e aberto, com um líquido não viscoso, tem uma fuga 4,5m abaixo da superfície livre do líquido. Qual é, teoricamente, a velocidade de saída do líquido pelo orifício? Se a área do orifício for 0,25 cm2, quanto líquido escapa num minuto?

What is special about a dc circuit ?

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.