- 4. Solve the following problems. a) Liquid Mercury meta is poured into a graduated cylinder that holds exactly 22.5 mL The mercury used to fill the cylinder weighs 306.0 g. From this information, calculate the density of mercury. (4 marks) b) What is the mass of the ethyl alcohol that exactly fills a 200.0mL container? The density of ethyl alcohol is 0.789g/mL 5. Explain what the flow rate of a liquid is. Why do we need to know the flow rate of a liquid?Use an example in your answer. (3 marks) 6. Do all liquids have the same viscosity?Using examples, explain. (3 marks)
- about 5.3times 10^-11 m. Find the magnitude of the electric force that each particle exerts on the other. Remember that the charge of an electron is -1.6times 10^-19C and the charge of a proton is +1.6times 10^-19C a. 9times 10^wedge -9N b 8.2times 10^wedge -8N C 10times 10^wedge -7N d. 4.3times 10^wedge -9N
- 20. Explain the difference between compression and rarefraction relating to what we call sound? 21. What does it mean when we say the microphones "area of rejection"?
- Select the correct meaning for each of the following terms. square closed system 3 square open system 4 square adiabatic process 5 square isothermal process 2 square isolated system 1 1. neither energy nor matter flows across the boundaries 2. occurs at constant temperature 3. no heat is exchanged between a system and its surroundings 4. energy and matter flow across the boundaries 5. only energy flows across the boundaries
- 39. Twins who are 19.0 years of age leave the earth and travel to a distant planet 12.0 light-vears away. Assume that the planet and earth are at rest with respect to each other. The twins depart at the same time on different spaceships. One twin travels at a speed of 0.900c, while the other twin travels at 0.500c (a) According to the theory of special relativity.what is the difference between their ages when they meet again at the earliest possible time? (b)Which twin is older?
