A. Explain the progression of ideas from a variety of scientists that led to the current understanding of
atomic theory. (2 points)

b. Choose one example from the historical development of the atomic theory, and use it to illustrate how models are used in the process of forming conclusions from scientific experiments. (3 points)

Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?

Identical marbles are released from the same height on each of the following four frictionless ramps . compare the speed of the marbles at the end of each ramp. explain your reasoning

Gunpowder residue is most likely to show up where on a shooters hands