A small quantity of radioactive gold was deposited on the end of a gold cylinder After holding for 24 h at a high temperature the specimen was sectioned and the radioactivity of each slice was as follows: Distance from end of to center of slice (um) 10 20 30 40 50 bar Radioactivity (a. u.) 83.8 66.4 42.0 23.6 8.74 Use the above data to determine the diffusivity D).

If you want to create an electrical current, which situation would produce a solution capable of this

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium