A see saw is balanced by a mass at each end and does not move. the total anticlockwise movement is 85 Nm what unit must the total clockwise movement be

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

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

Properties seen when one one substance changes to another are known as properties