What is the maximum kinetic energy k0 of the photoelectrons when light of wavelength 340 nm falls on the same surface? use h = 6.63×10−34 j⋅s for planck's constant and c = 3.00×108 m/s for the speed of light and express your answer in electron volts.

An airplane travels from st. louis to portland, oregon in 4.33 hours. if the distance traveled is 2,742 kilometers. what is the airplane's average speed? - the airplane returns to st. louis by the same route. because the prevailing winds push the airplane along, the return trip takes only 3.75 hours. what is the average speed for this trip? - the airplane refuels in st. louis and continues on to boston. it travels at an average speed of 610 km/h. if the trip takes 3.75 hours. what is the flight distance between st. louis and boston?