What inference can be drawn from the following evidence? Specific atoms of carbon from a dead animal can be traced to the leaves of a living plant. A. Carbon exists only in animals
B. Carbon is moved throughout many different objects, but the total amount of carbon doesn’t change.
C. The animal must be eating the plant for food
D. Carbon is found more in plants than it is in animals.

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

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.

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass