put vinegar in it mate
no, because he has left the ball from his hand
If it stopped working, check it to make sure it still has ink. If it's out of ink, take it with you to a store and ask an employee if they could help you find the proper ink for it, or just throw it away and buy a new one. if it has ink, scribble over a page till it works. if that doesn't work, wet it a little, that is the part that you would use to write with should get wet. If it still doesn't work, just buy a new pen.
If you choose a different reference point, the numbers for torque will be different. Calculations will still work out, though - but a reference point must be chosen, and used consistently.
You can if you want to I know because my sister tried it and it still glows. So the answer is yes
Work equals the change in energy, in a closed system energy is not lost. So in a closed system any work done will be countered by an equal and opposite work. An example is throwing a ball up into the air and catching it again. The work done by you to accelerate it is equal and opposite to the work done by the earth.
Yes.
If you are having issues with getting a new pen to work, try drawing in circles on paper until the ink comes out, If you are still having issues with no ink, then take a lighter and hold it to the ball point for a few moments before trying the circles again.
no, because he has left the ball from his hand
Yes, if there is still room.
If it stopped working, check it to make sure it still has ink. If it's out of ink, take it with you to a store and ask an employee if they could help you find the proper ink for it, or just throw it away and buy a new one. if it has ink, scribble over a page till it works. if that doesn't work, wet it a little, that is the part that you would use to write with should get wet. If it still doesn't work, just buy a new pen.
One with a sealed cartridge, which is pressurized, would work best. The pressure would push the ink towards the ball point, eliminating the need for gravity to 'pull' the ink 'down'. See related link.