6. The petrol in a petrol can weighs 2000g. The density of petrol is 0.8g/cmº. What is the volume of the petrol in the can in a) cm
b)litres (1000cmp=1 litre)

Atransverse wave is traveling on a string stretched along the horizontal x-axis. the equation for the vertical displacement y of the string is given by y = (1.8 x 10-3)cos[π(13x - 60t)], where all quantities are in si units. what is the maximum speed of a particle of the string

Asimple electrochemical cell contains two electrodes? t or f

What would be the net charge of 1 gram gold piece after removal of 1% of its electrons