What if? fluoride ions (which have the same charge as an electron) are initially moving with the same speed as the electrons from part (a) through a different uniform electric field. the ions come to a stop in the same distance d. let the mass of an ion be m and the mass of an electron be m. find the ratio of the magnitude of electric field the ions travel through to the magnitude of the electric field found in part (a). (use the following as necessary: d, k, m, m, and e for the charge of the electron.)

Modify the equation fδt=δ (mv) to find the force of friction.

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.