Meg walks 5 blocks south and then turns around and walks 8 blocks back to the north. the distance that she walks is 13 blocks. what is her displacement?

Which statement best describes how private industry decides where to spend the money on research and development

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

At what time will the interfering waves have an amplitudeof zero?