73. pasangan larutan berikut yang jumlah partikel
terlarutnya sama adalah
(1) 01 m c12h22o11, dengan 0,3 m c6h12o6
(2) 0,6 m hci dengan 0,3 mh2so4
(3) 0,3 m bacl2, dengan 0,4 m kci
(4) 0,2 m ca(oh)2, dengan 0,6 m c6h12o6

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?

What is the most useful equation for electric power?

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.