The work function for metallic caesium is 2.24 ev. calculate the kinetic energy and speed of electrons ejected if a light source of a) 250 nm and b) 600 nm is used.

Asher cycles 12 miles in 16 hours. what is his speed?

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?