A 70-kg person rides in a 30-kg cart moving at 12 m/s at the top of a hill that is in the shape of an arc of a circle with a radius of 40 m. (a) What is the apparent weight of the person as the cart passes over the top of the hill? (b) Determine the maxi-mum speed that the cart can travel at the top of the hill without losing contact with the surface. Does your answer depend on the mass of the cart or the mass of the person? Explain.
Friday, August 26, 2016 Chapter 1: Matter, Measurement, and Problem-solving Comp. of Matter - Atoms - Molecules • bonds of different strength Structure and Properties Goal: To Understand substance must understand atom and molecules Carbon monoxide Carbon Dioxide 1. one carbon and one oxygen “ 2. colorless and oderless “ 3. burns blue Incombustible 4. binds to hemoglobin Will not bind to hemoglobin Element: substance that can NOT be separated into simpler substances EX: Hg, C, F, N Matter: Anything that takes up space and has mass Substance: 3