Homework Help is Here – Start Your Trial Now!
Science
Physics
A. The binding energy of Sodium is 2.28 eV. Calculate the number of photoelectrons ejected from a 1.00 mm? area of Sodium metal by 500-nm electromagnetic radiation having an intensity of 1.30 kW/m?. What power is carried away by the electrons? B. A 60-kg person accidentally ingests a small source of alpha particles (RBE=15). The activity of the source is 0.04 Ci, the half-life of the source is 110 years, and each alpha particle emitted has an energy of 0.586 MeV. It takes 12 hours for the alpha source to pass through the person's digestive system and exit the body. i. How many alpha particles are absorbed by the person (assume that 100 percent of the alpha particles emitted by the source are absorbed by the person)? ii. How much energy, in Joules, is deposited in the person by the source? iii. What is the absorbed dose in rad? iv. What is the absorbed dose in rem? C. A 70-kg person experiences a whole-body exposure to alpha radiation (RBE=15) with energy 4.77 MeV. A total of 6.25×1012 alpha particles are absorbed. i. What is the absorbed dose in rad? ii. What is the equivalent dose in rem? iii. If the source is 0.0320 gram of Radium-226 (half-life 1,600 years) somewhere in the body, what is the activity of this source? iv. If all the alpha particles produced are absorbed, what time is required for this dose to be delivered? D. Suppose that 0.1 kg of ice at an initial temperature of -10°C are put into 0.40 kg of water at an initial temperature of 20°C. Assume the final temperature is 0°C. How many grams of ice will melt? Specific heat capacity of water is 4,200 J/kg/°C. Specific heat of fusion of water is 336,000 J/kg and specific heat capacity of ice is 2,100 J/kg/°C.

A. The binding energy of Sodium is 2.28 eV. Calculate the number of photoelectrons ejected from a 1.00 mm? area of Sodium metal by 500-nm electromagnetic radiation having an intensity of 1.30 kW/m?. What power is carried away by the electrons? B. A 60-kg person accidentally ingests a small source of alpha particles (RBE=15). The activity of the source is 0.04 Ci, the half-life of the source is 110 years, and each alpha particle emitted has an energy of 0.586 MeV. It takes 12 hours for the alpha source to pass through the person's digestive system and exit the body. i. How many alpha particles are absorbed by the person (assume that 100 percent of the alpha particles emitted by the source are absorbed by the person)? ii. How much energy, in Joules, is deposited in the person by the source? iii. What is the absorbed dose in rad? iv. What is the absorbed dose in rem? C. A 70-kg person experiences a whole-body exposure to alpha radiation (RBE=15) with energy 4.77 MeV. A total of 6.25×1012 alpha particles are absorbed. i. What is the absorbed dose in rad? ii. What is the equivalent dose in rem? iii. If the source is 0.0320 gram of Radium-226 (half-life 1,600 years) somewhere in the body, what is the activity of this source? iv. If all the alpha particles produced are absorbed, what time is required for this dose to be delivered? D. Suppose that 0.1 kg of ice at an initial temperature of -10°C are put into 0.40 kg of water at an initial temperature of 20°C. Assume the final temperature is 0°C. How many grams of ice will melt? Specific heat capacity of water is 4,200 J/kg/°C. Specific heat of fusion of water is 336,000 J/kg and specific heat capacity of ice is 2,100 J/kg/°C.

Modern Physics
Modern Physics
3rd Edition
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Chapter14: Nuclear Physics Applications
Section: Chapter Questions
Problem 27P
See similar textbooks
icon
Related questions
Question
A. The binding energy of Sodium is 2.28 eV. Calculate the number of photoelectrons ejected from a 1.00 mm? area of Sodium metal by 500-nm electromagnetic radiation having an intensity of 1.30 kW/m?. What power is carried away by the electrons? B. A 60-kg person accidentally ingests a small source of alpha particles (RBE=15). The activity of the source is 0.04 Ci, the half-life of the source is 110 years, and each alpha particle emitted has an energy of 0.586 MeV. It takes 12 hours for the alpha source to pass through the person's digestive system and exit the body. i. How many alpha particles are absorbed by the person (assume that 100 percent of the alpha particles emitted by the source are absorbed by the person)? ii. How much energy, in Joules, is deposited in the person by the source? iii. What is the absorbed dose in rad? iv. What is the absorbed dose in rem? C. A 70-kg person experiences a whole-body exposure to alpha radiation (RBE=15) with energy 4.77 MeV. A total of 6.25×1012 alpha particles are absorbed. i. What is the absorbed dose in rad? ii. What is the equivalent dose in rem? iii. If the source is 0.0320 gram of Radium-226 (half-life 1,600 years) somewhere in the body, what is the activity of this source? iv. If all the alpha particles produced are absorbed, what time is required for this dose to be delivered? D. Suppose that 0.1 kg of ice at an initial temperature of -10°C are put into 0.40 kg of water at an initial temperature of 20°C. Assume the final temperature is 0°C. How many grams of ice will melt? Specific heat capacity of water is 4,200 J/kg/°C. Specific heat of fusion of water is 336,000 J/kg and specific heat capacity of ice is 2,100 J/kg/°C.
Transcribed Image Text:A. The binding energy of Sodium is 2.28 eV. Calculate the number of photoelectrons ejected from a 1.00 mm? area of Sodium metal by 500-nm electromagnetic radiation having an intensity of 1.30 kW/m?. What power is carried away by the electrons? B. A 60-kg person accidentally ingests a small source of alpha particles (RBE=15). The activity of the source is 0.04 Ci, the half-life of the source is 110 years, and each alpha particle emitted has an energy of 0.586 MeV. It takes 12 hours for the alpha source to pass through the person's digestive system and exit the body. i. How many alpha particles are absorbed by the person (assume that 100 percent of the alpha particles emitted by the source are absorbed by the person)? ii. How much energy, in Joules, is deposited in the person by the source? iii. What is the absorbed dose in rad? iv. What is the absorbed dose in rem? C. A 70-kg person experiences a whole-body exposure to alpha radiation (RBE=15) with energy 4.77 MeV. A total of 6.25×1012 alpha particles are absorbed. i. What is the absorbed dose in rad? ii. What is the equivalent dose in rem? iii. If the source is 0.0320 gram of Radium-226 (half-life 1,600 years) somewhere in the body, what is the activity of this source? iv. If all the alpha particles produced are absorbed, what time is required for this dose to be delivered? D. Suppose that 0.1 kg of ice at an initial temperature of -10°C are put into 0.40 kg of water at an initial temperature of 20°C. Assume the final temperature is 0°C. How many grams of ice will melt? Specific heat capacity of water is 4,200 J/kg/°C. Specific heat of fusion of water is 336,000 J/kg and specific heat capacity of ice is 2,100 J/kg/°C.
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Modern Physics
Modern Physics
Physics
ISBN:
9781111794378
Author:
Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:
Cengage Learning
Principles of Physics: A Calculus-Based Text
Principles of Physics: A Calculus-Based Text
Physics
ISBN:
9781133104261
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
College Physics
College Physics
Physics
ISBN:
9781938168000
Author:
Paul Peter Urone, Roger Hinrichs
Publisher:
OpenStax College
College Physics
College Physics
Physics
ISBN:
9781285737027
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics Volume 3
University Physics Volume 3
Physics
ISBN:
9781938168185
Author:
William Moebs, Jeff Sanny
Publisher:
OpenStax
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS