Bethany had a beaker with a small amount of baking soda. she added a few drops of pickle juice to the baking soda and observed fizzing and bubbling. based on her observation, which of these can bethany determine about the new substance formed by mixing the baking soda and pickle juice? options: a chemical reaction produced a gas. a chemical reaction produced a solid. no chemical reaction took place. only a physical change happened.

Matt is driving down 7th street. he drives 150 meters in 18 sec. assuming he doesn’t slow down or speed up, what is his speed?

Which of these activities increases the amount of carbon in the atmosphere?

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