*The total internal kinetic energy of 5 gallons of water is 2 x 108 J. The total kinetic internal energy of the water in a 100,000-gallon swimming pool is 5 x 10¹¹ J. (1 Gallon = 0.003785 m³. Density of the water = 1000 kg/m³. The atomic mass of water is 18 u.) a. How many water molecules are in the 5-gallon water? b. Which body of water is at higher temperature? Explain your answer.

*The total internal kinetic energy of 5 gallons of water is 2 x 108 J. The total kinetic internal energy of the water in a 100,000-gallon swimming pool is 5 x 10¹¹ J. (1 Gallon = 0.003785 m³. Density of the water = 1000 kg/m³. The atomic mass of water is 18 u.) a. How many water molecules are in the 5-gallon water? b. Which body of water is at higher temperature? Explain your answer.

Astronomy

1st Edition

ISBN:9781938168284

Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Publisher:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Chapter16: The Sun: A Nuclear Powerhouse

Section: Chapter Questions

Problem 38E: Raymond Davis Jr.’s neutrino detector contained approximately 1030 chlorine atoms. During his...

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Raymond Davis Jr.’s neutrino detector contained approximately 1030 chlorine atoms. During his experiment, he found that one neutrino reacted with a chlorine atom to produce one argon atom each day. A. How many days would he have to run the experiment for 1% of his tank to be filled with argon atoms? B. Convert your answer from A. into years. C. Compare this answer to the age of the universe, which is approximately 14 billion years (1.41010y) . D. What does this tell you about how frequently neutrinos interact with matter?
What is the difference in energy between the nx=ny=nz=4 state and the state with the next higher energy? What is the percentage change in the energy between the nx=ny=nz=4 state and the state with the next higher energy? (b) Compare these with the difference in energy and the percentage change in the energy between the nx=ny=nz=400 state and the state with the next higher energy.
Rutherford fired a beam of alpha particles (helium nuclei) at a thin sheet of gold. An alpha particle was observed to be deflected by 90.0; its speed was unchanged. The alpha particles used in the experiment had an initial speed of 2 107 m/s and a mass of 6.7 1027 kg. Assume the alpha particle collided with a gold nucleus that was initially at rest. Find the speed of the nucleus after the collision.
(a) An aspiring physicist wants to build a scale model of a hydrogen atom for her science fair project. If the atom is 1.00 m in diameter, how big should she try to make the nucleus? (b) How easy will this be to do?
(a) What voltage must be applied to an X-ray tube to obtain 0.0100-fm-wavelength X-rays for use in exploring the details of nuclei? (b) What is unreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?
2. How many particles are present in a closed container if the energy it contains is 96629.32J, and the diatomic oxygen gas is moving at a velocity of 37.39m/s? Use only the whole number for the value of atomic mass unit. Express your answer in proper scientific notation. Give full solution & Illustrate the problem.
In a nuclear fusion reaction, 2 g of hydrogen is converted into 1.985 g of helium. What is the energy released? a. 4.5 × 103J b. 4.5 × 106J c. 1.35 × 1012 J d. 1.35 × 1015 J
Part A Some atomic masses Particle Symbol Mass (u) Electron e 0.00055 Part B Proton р 1.00728 Neutron n 1.00866 Part C Hydrogen 'H 1.00783 Helium 4He 4.00260 Part D Calculate the mass defect of the helium nucleus He. The mass of neutral He is given by MHe = 4.002603 u. Express your answer in atomic mass units to three significant figures. · View Available Hint(s) ? u
7. How many milliliters of drug will be left in a 2 L bottle if 320 ml, 15 ml, 130 ml and 1.2 L are removed? 8. A Patient received three different I.V. drug, each mixed in 50 ml of fluid, over 8 hours. The patient also received 700 ml of I.V. fluid during that time. What was the patient's total I.V. intake in milliliters?
Student A observes 25 protons and 13 electrons before the conduct of experiment, after which decides to make the system neutral. How many atoms did he need to add to achieve this? O A. 12 protons O B. -13 protons O C. 12 electrons D. -13 electrons
Part A Some atomic masses Particle Symbol Mass (u) Electron e 0.00055 Part B Proton 1.00728 Neutron 1.00866 Part C Hydrogen 1.00783 Helium 4He 4.00260 Part D Part E Part F Calculate the binding energy per nucleon of the helium nucleus He. Express your answer in megaelectron volts to two significant figures. ? MeV
1. Give at most one example of a solid-state dosimeter. a. Briefly describe the design of the dosimeter i.e., its components and the materials used in it. How does the dosimeter interact with radiation? b. c. How does the dosimeter determine the absorbed dose? What physical quantity is measured from the dosimeter and how is it related to the absorbed dose? Describe the equipment needed to read out the dosimeter. d. e. Can we use this dosimeter as an absolute dosimeter? Explain your answer.