Asound wave is passing by a student 250 times every second. what is the frequency of the sound wave? 25 s 1 second 250 hz 1/250 hz

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j

Which governments provide garbage collection services to homes and businesses

The solid that is formed and usually sinks to the bottom of a solution is the