Helium atoms emit light at several wavelengths. light from a helium lamp illuminates a diffraction grating and is observed on a screen 50.00 cm behind the grating. the emission at wavelength 501.5 nm creates a first-order bright fringe 21.90cm from the central maximum. what is the wavelength of the bright fringe that is 31.60cm from the central maximum?

Which statement best describes resistance? resistance is a. how well a current will flow in a material and is measured in volts. b. how well a material conducts an electrical charge and is measured in ohms. c. the ability of a material to attract a positive charge to create a current. d. the ability of a material to repel neutral charges and is measured in ohms.

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Hen a gfci receptacle device is installed on a 20-ampere branch circuit (12 awg copper), what is the minimum volume allowance (in cubic inches) required for conductor fill for each conductor in the outlet box?