Coalcos reciben an element. When coalbum intit combines with the element oxygen from the an. Which of the following best describes the product of burning A water heterogeneous mixture of atoms of hydrogen and oxygen
O carbono heterogeneous mixture of atoms of carbon and oxygen
Carbon coxide a homogeneous mixture of atoms of carbon gas and oxygen gas
On comon atoms of carbon and oxygen

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.