Microwaves operate at a frequency of 2.40 GHz. Find the minimum thickness for a plastic tray with a refractive index of 1.45 that will cause enhanced reflection of microwaves incident normal to the tray.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle