a wood board that is 5.1 cm x 10.2 x 243.8cm has a mass of 11.8kg will this board float in water? show all your proof

Iknow #2 is d. i just need to know why

The graph above shows how the price of cell phones varies with the demand quantity. the equilibrium price for cell phones is where both supply and demand quantities equal $100, 5,000 5,000, $100

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.