78. Determine the number of significant figures in the following measurements: (a) 0.0009, (b) 15,450.0, (C)
6x103, (d) 87.990, and (e) 30.42,
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In this experiment, you will use a track, a toy car, and some washers to explore newton’s first two laws of motion. you will make observations and collect data regarding the motion of these objects. in the space below, write a general scientific question that you will answer by doing this experiment.

Which type of microscope would allow the viewer to see ribosomes inside a cell?

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34