Which of these experiments would make use of qualitative data? a) a study on the change in freezing point of water when salt is added b) a study of different surfaces to compare luster or shine c) a study of different shapes to compare rolling friction values d) a study on the effects of sunlight on the growth rate of plants

The particles of an ice cube at 0°c (represented by the blue circles) come in contact with the particles of juan’s hand at 37°c (represented by the orange circles). which diagram correctly represents the temperature of the two substances and the direction of heat flow?

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?