A car is traveling east at an unknown Initial velocity. Without changing directions, it accelerates at 0.75 m/s2 for a distance of 300 m, increasing its velocity to 30 m/s. What was the Initial velocity of the car?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

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

The least penetrating form of radiation is