The dirt or smudge can affect the quality/uniformity of light reaching the photo media.
you swing with all your might but you get under the balkl instead of making clean contact
check your battery cables first, make sure they're clean and making good contact.
The battery is not making good contact or has been installed in reverse. Remove the battery and clean ther terminals with a pencil eraser. Reinstall the battery making sure you install it correctly.
Yes or it will become less and less efficient and overheat
Acuvue contact lenses need cleaning before put back in your eye because you may feel an extreme pain if you don't clean them. Place the contact lense on the tip of your finger, put a few drops of solution in the contact and with your clean finger make back and forth motions to clean anything that is on the lense off.
City
Most likely headlight switch is not making proper contact (best case - clean and relubricate), or there is an open in the wiring (wires need repairs or replacing).
The electrical contacts on the pulse board are likely not making contact or are damaged in some way. You can replace the pulse board (about $25 from pep boys.), it is located on the firewall, next to the wiper motor. Actually looks like a square box adjacent to the wiper motor. You may just need to clean the electical contacts inside. They are two brass or copper pieces which make contact with a spiral wire on the circuit board. Make sure they are clean amd making contact with the circuit board.
By making them clean
of Clean, The act of making clean., The afterbirth of cows, ewes, etc.
probably no because what if they don't have contact with water at that time but if its possible and they do have contact to clean water they should drink it!
All games have options inside the game to change the graphics up or down. If you reduce the graphics in-game all the way down and the game is still unplayable then you probably need to clean up your computer and upgrade its components.