Electrons that are initially at rest are accelerated by a voltage, V , which produces a monoenergetic beam. This beam is directed at a double slit apparatus with slits of width b and with a slit separation, d. A bank of electron detectors is a distance L beyond the double slit. The first minimum in the electron count accurs at detector X. How far is detector X from the the center of the interference pattern

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j

What is an aquifer for science class