What is the ratio of resistivity of 2 resistors with identical resistances and area of cross section,
where the first resistor is twice the length of the second resistor?

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

3. which is not a primary color of light? blue red green yellow