The steps in the heating of a metal seat in a park are listed below: step 1: heat travels from the sun to earth step 2: heat travels through atmosphere to the top of the seat step 3: heat from the top of the seat travels through the seat to the lower parts of the seat which statement is correct? a. heat is transferred by radiation in step 1 and step 3. b. heat is transferred by radiation in step 1 and step 2.c. heat is transferred by convection in step 1 and step 2. d. heat is transferred by convection in step 1 and step 3.

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units

Consider each of the electric- and magnetic-field orientations given next. in each case, what is the direction of propagation of the wave? a)\vec ein the +xdirection,\vec bin the +ydirection. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction b)\vec ein the -y direction,\vec bin the +x choose+ x direction- x direction+ y direction- y direction+ z direction- z direction c)\vec ein the +z direction,\vec bin the -x direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction d)\vec ein the +y direction,\vec bin the -z direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency