Into what kind of energy do animals convert chemical energy from molecules? a. chemical energy b. mechanical energy c. physical energy d. rotational energy

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line