Oil with a specific gravity of 0.80 forms a layer 0.90m deep in an open tank that is otherwise filled with water. the total depth of water and oil is 3m. what is the gage pressure at the bottom of the tank?

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

Which of the choices below is one of the primary gases found in the atmosphere? a. helium b. carbon dioxide c. nitrogen d. argon

What do you think car designers do if the damage caused by a crash test is too severe?