Equivalent resistance: What is the equivalent resistance between points P & Q?

(None of the resistors are the same and the wires are without resistors.)​​

The step-down transformer gives a current of 10a at 24v if the primary voltage is 240v calculate the 1_primary current 2_the power input 3_the power output

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.