An unknown fiber sample is found at a crime scene. forensic scientists measure its index of refraction and obtain a value of 1.48. a suspect's jacket was made of dacron polyester, his jeans were made of cotton, his shirt was made of rayon, and his tie was made of acetate. which piece of clothing may match the fiber at the crime scene?
question 12 options:

tie

shirt

jeans

jacket

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.

Difference between natural and artifical magnet