The density of a string was increased by a factor of two. how will the new wavelength be different from original wavelength?

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

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?

What causes the formation of ocean currents?