A police officer uses a radar gun to determine the speed of a car. A specialized radar gun uses ultraviolet light to determine the speed. What describes the wave used? check all that apply.

transverse
longitudinal
heat
electromagnetic
sound

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates

Area around a charged object where the objects can exert a force on another charged objects is an electric

The standard cell potential (e°cell) for the reaction below is +0.63 v. the cell potential for this reaction is when the concentration of zn2+ = 1.0 m and the concentration of pb2+ = 2.0 x 10-4 m. pb2+(aq) + zn(s) > zn2+(aq) + pb(s)