a uniform mixture consists of 30cmcubic of water and 40cm cubic of ethanol. If the densities of water and ethanol are 1g/cm cubic and 0.85g/cm cubic respectively. Determine the density of the mixture.

Identify the type of synthetic material used in each object

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio