26. Why does the need on a compass move when placed in the coll of wirel The comuns needle moves because the flow of electricity
a causes the wire to heat up
b. generates a magnetic field
C is generated by a battery
d. Nows in only one direction
27. Increasing the clectric current in the wire is one way to
#strengthen a solenoid's magnetic field
b. make a solenoid become an electromagnet
C, make an electromagnet become a solenoid
d. create a larger electric field

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

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

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?