Which source is most likely an authority on the subject? A. Dr. Vale, a pediatrician, discusses electrical circuitry on her home-improvement website.
B. Jonah, an amateur cook, teaches his son how to make the best grilled cheese sandwiches.
C. Susan, an architect, presents her hand-made quilts at the Quilting Society.
D. Dr. Patel, a cardiologist, presents her findings on heart disease.

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little

1. when conducting a test on what kind of music increases the growth of plants, all of the following would fail to meet to fair test standard except (1 point) using different kinds of plants. giving some plants more water than others. exposing the plants to different types of music. using nutrient-rich soil for one and lesser soil for others. 2. engineering uses scientific thinking to solve real-world problems. (1 point) true false 3. what does it mean to test a hypothesis? (1 point) pass a quiz on other scientists’ results analyze only the results from scientific sources not make assumptions about how an experiment will turn out see if the results of an experiment are what the scientist predicted