What is the relationship between the PE and the height of the skater on the track? Use words like high, medium, low. A. When the skater is at the beginning of the track, the potential energy is . B. When the skater is at the middle of the track, the potential energy is . C. When the skater is at the end of the track, the potential energy is .

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.