A metal wire of resistance 48 is cut into four equal pieces that are then connected side by side to make a new wire that is one-quarter of the original length. What is the resistance of this new wire?

Will you chech and finish these for me, because i am stumped with them.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?