Oxygen-18 is a naturally-occuring, stable isotope and is commonly used is scientific studies as a tracer. using the periodic table, explain the difference between oxygen-18 and oxygen-16. a) oxygen-18 contains 9 protons while oxygen-16 only contains 8 protons. b) oxygen-18 contains 10 photons while oxygen-16 only contains 8 photons. c) oxygen-18 contains 10 neutrons while oxygen-16 only contains 8 neutrons. d) oxygen-18 contains 8 electrons while oxygen-16 only contains 9 electrons.

Aprojectile is launched from ground level with an initial velocity of v 0 feet per second. neglecting air resistance, its height in feet t seconds after launch is given by s equals negative 16 t squared plus v 0 t. find the time(s) that the projectile will (a) reach a height of 192 ft and (b) return to the ground when v 0equals112 feet per second. (a) find the time(s) that the projectile will reach a height of 192 ft when v 0equals112 feet per second. select the correct choice below and, if necessary, fill in the answer box to complete your choice.

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter

Find the equation for the plane through upper p 0 left parenthesis negative 4 comma negative 8 comma negative 5 right parenthesis perpendicular to the following line. xequalsnegative 4 minus t, yequalsnegative 8 plus 2 t, zequals3 t, minusinfinityless thantless thaninfinity