Gravity and drag both reduce the maximum altitude that a rocket can reach, increasing the cost of rocket flights. This study hypothesizes that rockets with a smoother surface will experience less drag and reach higher altitudes, given the same thrust as rockets with rough surfaces. To test this hypothesis, three identical model rockets were constructed and given finishes with varying degrees of surface smoothness: roughed with 40-grit sandpaper, unfinished, and glossed. Each rocket was outfitted with B5-4 motors and flown ten times. Flight results support the initial hypothesis, with the roughened-surface rocket reaching the apogee point at the lowest altitude and the glossed-surface rocket reaching it at the highest. In conclusion, the findings suggest that smoother surface finishes can reduce the drag force enough to affect altitude, thereby potentially increasing rocket efficiency and reducing fuel costs.

Read the following scene from trifles. sheriff (chuckling). married to the law. (moves toward the other room.) i just want you to come in here a minute, george. we ought to take a look at these windows. county attorney (scoffingly). oh, windows! sheriff. we’ll be right out, mr. hale. (hale goes outside. the sheriff follows the county attorney into the other room. then mrs. hale rises, hands tight together, looking intensely at mrs. peters, whose eyes take a slow turn, finally meeting mrs. hale’s. a moment mrs. hale holds her, then her own eyes point the way to where the box is concealed. suddenly mrs. peters throws back quilt pieces and tries to put the box in the bag she is wearing. it is too big. she opens box, starts to take the bird out, cannot touch it, goes to pieces, stands there . sound of a knob turning in the other room. mrs. hale snatches the box and puts it in the pocket of her big coat. enter county attorney and sheriff.) county attorney (facetiously). well, henry, at least we found out that she was not going to quilt it. she was going to—what is it you call it, ladies! mrs. hale (her hand against her pocket). we call it—knot it, mr. henderson. what changes might a director or screenwriter make to the original version of this scene in order to best emphasize the mood? cut dialogue from the scene to make it a more appropriate length update the setting to appeal to a more modern-day audience omit the actions of the characters to avoid confusion and chaos include the use of lighting, camera angles, and sound effects