Canoeing a person in a canoe wants to cross a 65-foot-wide river. he begins to paddle straight across the river at 1.2 m/s while a current is flowing perpendicular to the canoe. if the resulting velocity of the canoe is 3.2 m/s, what is the speed of the current to the nearest tenth?

Auniform electric field exists in the region between two oppositely charged plane parallel plates separated by a distance of 1.60 cm . a proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time interval of 3.20×10-6 s. 1-find the magnitude of the electric field. use 1.60×10-19c for the magnitude of the charge on an electron and 1.67×10-27kg for the mass of a proton 2-find the speed of the proton when it strikes the negatively charged plate