Agamma ray is a high energy, high frequency electromagnetic wave that travels at the speed light 3.0 x 10^8 m/s calculate the wavelength of the wave if it's frequency is 10^20hz

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?