Le ballon a une masse de 430 grammes. Calculer la valeur de cette force qui exerce sur le ballon

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

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?

If a stone with an original velocity of 0 is falling from a ledgeand takes 8 seconds to hoybthe ground whays the final velocity of the stone