Aspinning ice skater will slow down if she extends her arms away from her body. which of the following statements explains this phenomenon?

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

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