What well u can use to make a shelter but that's all I can think of ??
I'd say ground. <span>Voltage in the US is 110-120 volts while in other countries it is 220-240 volts. if you have a 110-120 volt appliance, you need a step-up transformer (110 to 220)before you could use it in a 220 volt power supply.</span>
<span>2.56 sec (t=1/0.39)
f=3.9/10</span>
1- interaction between 2 objects
2- action- reaction force pairs
