If Keisha's thumb points in the direction of an electrical current, what will her fingers curled around the wire represent? (1 point) a The opposing electric current b The opposing magnetic current c The direction of the electric field d The direction of the magnetic field

Adouble-slit experiment is performed with light of wavelength 600 nm. the bright interference fringes are spaced 1.8 mm apart on the viewing screen.what will the fringe spacing be if the light is changed to a wavelength of 400 nm? ?

Describe cytokinesis in plants and animals. in animals: in plants.

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?