A train is travelling at 50 ms-1 when the driver applies the brakes and gives the train a constant deceleratic of magnitude 0.50 ms-2 for 100 s. Describe what happens to the train. Calculate the distance travelled by the train in 100 s

Along, straight wire with 3.0 a current flowing through it produces magnetic field strength 1.0 t at its surface. if the wire has a radius r, where within the wire is the field strength equal to 36.0% of the field strength at the surface of the wire? assume that the current density is uniform throughout the wire

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What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.