A2 kg mass of copper is heated for 40s by a heater that produces 100 j/s
the specific heat capacity of copper is 400 j/kg (kg k)
what is the rise in temperature? show all your steps.

When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other

Does anyone have the answers to online physics course plato course physics, semester a v3.0

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.)