What the climate in the Anacostia watershed been like over the past few 12,500 years?

Which instrument is used to measure air temperature

If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction

A-4.60 μc charge is moving at a constant speed of 6.80×105 m/s in the +x−direction relative to a reference frame. at the instant when the point charge is at the origin, what is the magnetic-field vector it produces at the following points.