Suppose a moving car has 2000 j of kinetic energy. if the carʹs speed doubles, how much kinetic energy would it then have?
a) 8000 j
b) 6000 j
c) 1000 j
d) 4000 j
e) 2000 j

Aphysical change is a change in the size, shape,, or stafe of matter true or false

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

On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)