Reggie and charlotte are baking oatmeal cookies. they dip the baked cookies in melted chocolate. the chocolate cools to form a hardened coating. reggie argues the entire chocolate-covered cookie has undergone a chemical change. charolette disagrees, saying only the original oatmeal cookie has undergone a chemical change, not the chocolate coating.

If you quadruple the temperature of a black body, by what factor will the total energy radiated per second per square meter increase? 1,024 64 16 4 256 submit answer

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?