College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Chapter 31, Problem 48PE
Data from the appendices and the periodic table may be needed for these problems.
Mantles for gas lanterns contain thorium, because it forms an oxide that can survive being heated to incandescence for long periods of time. Natural thorium is almost 100% 232Th.
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A bungee jumper plans to bungee jump from a bridge 64.0 m above the ground. He plans to use a uniform elastic cord, tied to a harness around his body, to stop his fall at a point 6.00 m above the water. Model his body as a particle and the cord as having negligible mass and obeying
Hooke's law. In a preliminary test he finds that when hanging at rest from a 5.00 m length of the cord, his body weight stretches it by 1.55 m. He will drop from rest at the point where the top end of a longer section of the cord is attached to the bridge.
(a) What length of cord should he use?
Use subscripts 1 and 2 respectively to represent the 5.00 m test length and the actual jump length. Use Hooke's law F = KAL and the fact that the change in length AL for a given force is proportional the length L (AL = CL), to determine the force constant for the test case and for the
jump case. Use conservation of mechanical energy to determine the length of the rope. m
(b) What maximum acceleration will he…
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Figure 1: Circuit symbols for a variety of useful circuit elements
Problem 04.07 (17 points). Answer the following questions related to the figure below.
A What is the equivalent resistance of the network of resistors in the circuit below?
B If the battery has an EMF of 9V and is considered as an ideal batter (internal resistance
is zero), how much current flows through it in this circuit?
C If the 9V EMF battery has an internal resistance of 2 2, would this current be larger
or smaller? By how much?
D In the ideal battery case, calculate the current through and the voltage across each
resistor in the circuit.
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Chapter 31 Solutions
College Physics
Ch. 31 - Suppose the range for 5.0 MeVa ray is known to be...Ch. 31 - What is the difference between (rays and...Ch. 31 - Ionizing radiation interacts with matter by...Ch. 31 - What characteristics of radioactivity show it to...Ch. 31 - What is the source of the energy emitted in...Ch. 31 - Consider Figure 31.3. If an electric field is...Ch. 31 - Explain how an (particle can have a larger range...Ch. 31 - Arrange the following according to their ability...Ch. 31 - Often, when people have to work around radioactive...Ch. 31 - Is it possible for light emitted by a scintillator...
Ch. 31 - The weak and strong nuclear forces are basic to...Ch. 31 - Define and make clear distinctions between the...Ch. 31 - What are isotopes? Why do different isotopes of...Ch. 31 - Star Trek fans have often heard the term...Ch. 31 - What conservation law requires an electron’s...Ch. 31 - Neutrinos are experimentally determined to have an...Ch. 31 - What do the three types of beta decay have in...Ch. 31 - In a 3109 yearold rock that originally contained...Ch. 31 - Does the number of radioactive nuclei in a sample...Ch. 31 - Radioactivity depends on the nucleus and not the...Ch. 31 - Explain how a bound system can have less mass than...Ch. 31 - Spontaneous radioactive decay occurs only when the...Ch. 31 - To obtain the most precise value of BE from the...Ch. 31 - How does the finite range of the nuclear force...Ch. 31 - Why is the number of neutrons greater than the...Ch. 31 - A physics student caught breaking conservation...Ch. 31 - When a nucleus (decays, does the (particle move...Ch. 31 - The energy of 30.0 eV is required to ionize a...Ch. 31 - A particle of ionizing radiation creates 4000 ion...Ch. 31 - (a) Repeat Exercise 31.2, and convert the energy...Ch. 31 - Suppose a particle of ionizing radiation deposits...Ch. 31 - Verify that a 2.31017kg mass of water at normal...Ch. 31 - Find the length of a side of a cube having a mass...Ch. 31 - What is the radius of an (particle?Ch. 31 - Find the radius of a 238Pu nucleus. 238Pu is a...Ch. 31 - (a) Calculate the radius of 58Ni, one of the most...Ch. 31 - The unified atomic mass unit is defined to be...Ch. 31 - What is the ratio of the velocity of a (particle...Ch. 31 - If a 1.50cmthick piece of lead can absorb 90.0% of...Ch. 31 - The detail observable using a probe is limited by...Ch. 31 - (a) Show that if you assume the average nucleus is...Ch. 31 - What is the radio of the velocity of a 5.00MeV...Ch. 31 - (a) What is the kinetic energy in MeV of a ray...Ch. 31 - In the following eight problems, write the...Ch. 31 - In the following eight problems, write the...Ch. 31 - In the following eight problems, write the...Ch. 31 - In the following eight problems, write the...Ch. 31 - In the following eight problems, write the...Ch. 31 - In the following eight problems, write the...Ch. 31 - In the following eight problems, write the...Ch. 31 - In the following eight problems, write the...Ch. 31 - decay producing 137Ba. The parent nuclide is a...Ch. 31 - ( decay producing 90Y. The parent nuclide is a...Ch. 31 - decay producing 228Ra. The parent nuclide is...Ch. 31 - decay producing 208Pb. The parent nuclide is in...Ch. 31 - When an electron and position annihilate, both...Ch. 31 - Confirm That charge, electron family number, and...Ch. 31 - Confirm that charge, electron family number, and...Ch. 31 - Confirm that charge, electron family number, and...Ch. 31 - Confirm that charge, electron family number, and...Ch. 31 - A rare decay mode has been observed in which 222Ra...Ch. 31 - (a) Write the complete a decay equation for 226Ra....Ch. 31 - (a) Write the complete a decay equation for 249Cf....Ch. 31 - (a) Write the complete decay equation for the...Ch. 31 - (a) Write the complete decay equation for 90Sr,...Ch. 31 - Calculate the energy released in the + decay of...Ch. 31 - (a) Write the complete + decay equation for llC....Ch. 31 - (a) Calculate the energy released in the a decay...Ch. 31 - (a) Write the complete reaction equation for...Ch. 31 - (a) Write the complete reaction equation for...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - Data from the appendices and the periodic table...Ch. 31 - 2H is a loosely hound isotope of hydrogen. Called...Ch. 31 - 56Feis among the most tightly bound of all...Ch. 31 - 209Bi is the heaviest stable nuclide, and its BE/A...Ch. 31 - (a) Calculate BE/A for 235U, the rarer of the two...Ch. 31 - (a) Calculate BE/A for 12C. Stable and relatively...Ch. 31 - The fact that BE/A is greatest for A near 60...Ch. 31 - The purpose of this problem is to show in three...Ch. 31 - Unreasonable Results A particle physicist...Ch. 31 - Derive an approximate relationship between the...Ch. 31 - Integrated Concepts A 2.00T magnetic ?eld is...Ch. 31 - (a) Write the decay equation for the decay of...Ch. 31 - Unreasonable Results The relatively scarce...Ch. 31 - Unreasonable Results A physicist scatters (rays...Ch. 31 - Unreasonable Results A frazzled theoretical...Ch. 31 - Construct Your Own Problem Consider the decay of...
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