If an electromagnetic wave’s frequency doubles in a vacuum, what are the other effects on the wave?

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Argon is adiabatically compressed from an initial volume of 16 liters to a final volume of 2 liters. by what factor do the following quantities change? do they increase or decrease? (a) the rms speed (b) the thermal energy of the gas (c) the molar specific heat cv (d) the pressure

Hydrogen and helium are both members of?