John is trying to measure the pressure acting on a square platform. He has placed a mass of 20 kg on the disk and he measures the length of one side of the square as 15 cm. What is the pressure john should measure?

What is the relationship between the wavelength of a wave and it's energy?

Porque crees que el agua no podia subir mas de 10 m de altura con ese tipo de bomba

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.