Somewhere you place a 7.5 kg pumpkin on a spring scale. If the scaled reads 12.5 N , what is the acceleration due to gravity at that location?

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

What is friction? how does it affect the motion of an object?