Which positive result could develop if carbon dioxide increases in the atmosphere? a. people breathe carbon dioxide, so earth could support more human life. b. plants give off carbon dioxide, so an increase in plant life could decrease world hunger. c. carbon dioxide will protect people from the sun's radiation. d. carbon dioxide will create more sunny weather, which is good for plant growth.

Awheelhas a radius of 4.8 m. howfar (path length) does a point on the circumference travel if thewheel is rotated through angles of 30°, 30 rad, and 30 rev,respectively?

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states