The current through a device is 0.30 A, and the resistance in the device is 20 many 1.5 V batteries are required to run the device?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

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