Which description best describes a plateau? A raised, flat-surfaced area bound on one or more sides by cliffs or steep slopes.
An area of land that rises very high above the land around it.
A mound or ridge of sand most often found on a coastline or in the desert.
A large area of flat or gently rolling land.

20 points

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.