Which variable is represented by the following symbol? λ a. Wavelength
b. Amplitude
c. Frequency
d. Velocity

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e