The current supplied by a battery in a portable device is typically about 0.151 A. Find the number of electrons passing through the device in five hours.

Which material produces static charge when rubbed?

Which statement correctly describes the relationship between frequency and wavelength?

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?