Determine if the following errors are of random or systematic type. Justify your response. (a) A digital scale, that always shows 0.2 lb when no weight is applied. (b) Vibration of the needle of an automobile speedometer. (c) Consistent temperature difference between two sensors reading the air temperature in the same room.

The results of huy's eye exam show that he is nearsighted. which explanation should huy expect to hear? "you need convex lenses to shorten the distance that light takes to focus in your eyes." "you need concave lenses to shorten the distance that light takes to focus in your eyes." "you need convex lenses to lengthen the distance that light takes to focus in your eyes." "you need concave lenses to lengthen the distance that light takes to focus in your eyes."