a combination dead skin and dirt, looks like black eraser shavings
Kinetic energy is converted to heat energy.
If you use non-antibacterial soap and rub your hands together with it and water for like 15 seconds, that releases the germs, but does not kill them. So then you put your hands under water and that washes the germs away.
Rubing hands creates friction due to which heat is produced and you feel warmth; the same reason your body shivers when you are cold, the extra movement creats heat for your body.
Yes.To demonstrate: Press your hands together firmly, and rub them together rapidly.Friction produces heat.newtest3
If you want a thorough clean, be sure to scrub palms, in between fingers, back of hands, and near the nails with luke warm water while singing the abc's in your head approximately two times. Around 20-30 seconds.
you just run it under cold water and then use butter to rub it off
If you rub your two hands together nothing will happen, it will just become a little pale
Friction.
it causes friction
Thermal
You can feel heat when you rub your hand together!
An example of friction is when you rub your hands together or when you rub two sticks together it makes fire
friction
friction
Friction.
15
you would rub your hands together very fast
thermal energy