If 1 kg of each substance in the table absorbs 250 kJ of thermal energy, which substance will have the smallest change in temperature?

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.