a combination dead skin and dirt, looks like black eraser shavings
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
When you rub your hands together, friction is created between them. This friction generates heat, causing your hands to feel warm.
An example of friction is when you rub your hands together or when you rub two sticks together it makes fire
When you rub your hands together, you are converting mechanical energy into thermal energy through the friction generated between your hands.
You can feel heat when you rub your hand together!
Friction.
You should rub your hands together for at least 20 seconds when using an alcohol-based hand rub, ensuring that all surfaces of your hands are covered to effectively kill germs.
friction
When you rub your hands together, the mechanical energy from your muscles is converted into thermal energy due to the friction between your hands. This causes the temperature of your hands to increase, creating heat energy.
you would rub your hands together very fast
friction
When you rub your hands together, mechanical energy (from the motion of your hands) is converted into thermal energy due to the friction between your hands. Friction causes the molecules in your hands to move faster and generate heat, resulting in an increase in temperature.