Paku yang luas penampangnya 3mm² akan ditancapkan ke papan kayu. Bila paku di pukul dengan gaya 0,9N berapa tekanan yang diterima papan kayu?

Ineed asap! list 3 examples in which friction us or makes things easier in our daily life. explain the effect of friction for each. *make sure you explain the effect of friction for each example! *

What are the applications of electromagnetic waves

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?