In John Gurdon's nuclear-transfer experiments, he used nuclei from tadpole intestinal cells. Do you think he would have had more success or less success if he had taken cells from a blastula? From an adult frog? more; less less; less more; more same; same less; more

"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present