Abrass ring with inner diameter 2.00 cm and outer diameter 3.00 cm needs to fit over a 2.00 cm-diameter steel rod, but at 20∘c the hole through the brass ring is 60 μm too small in diameter. part a to what temperature, in ∘c, must the rod and ring be heated so that the ring just barely slips over the rod?

Which of the following represents an upside-down image?

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?