Hugh D. Young
ISBN #9780321733177
9th Edition
2,250 Questions
Homework Questions
College Physics is a comprehensive introduction that blends theoretical modeling with experimental observation to explore the fundamental principles governing the physical world. The book begins with essential tools such as models, measurements, and vectors and then systematically builds through classical mechanics—covering motion in one and two dimensions, Newton’s laws, and rotational dynamics—before advancing to energy, momentum, and the dynamics of systems. It further delves into the realms of thermodynamics, electric and magnetic fields, electromagnetism, and optics, reinforcing key concepts with practical applications and problem-solving techniques. By also addressing modern topics like relativity, quantum phenomena, and nuclear physics, this textbook equips students with a robust framework for understanding both traditional and cutting-edge aspects of physics.
Chapter 1
Models, Measurements, and Vectors
Chapter 2
Motion along a Straight Line
Chapter 3
Motion in a Plane
Chapter 4
Newton's Laws of Motion
Chapter 5
Applications of Newton's Law
Chapter 6
Circular Motion and Gravitatio
Chapter 7
Work and Energ
Chapter 8
Momentum
Chapter 9
Rotational Motion
Chapter 10
Dynamics of Rotational Motion
Chapter 11
Elasticity and Periodic Motion
Chapter 12
Mechanical Waves and Sound
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Chapter 13
Fluid Mechanics
Chapter 14
Temperature and Heat
Chapter 15
Thermal Properties of Matter
Chapter 16
The Second Law of Thermodynamics
Chapter 17
Electric Charge and Electric Field
Chapter 18
Electric Potential and Capacitanc
Chapter 19
Current, Resistance, and Direct-Current Circuit
Chapter 20
Magnetic Field and Magnetic Force
Chapter 21
Electromagnetic Induction
Chapter 22
Alternating Current
Chapter 23
Electromagnetic Waves and Propagationof Light
Chapter 24
Geometric Optics
Chapter 25
Optical Instruments
Chapter 26
Interference and Diffraction
Chapter 27
Relativity
Chapter 28
Photons, Electrons, and Atoms
Chapter 29
Atoms, Molecules, and Solids
Chapter 30
Nuclear and High-Energy Physics
Problem 1
An ant is crawling along a straight wire, which we shall call the $x$ axis, from $A$ to $B$ to $C$ to $D$ (which overlaps $A ),$ as shown in Figure $2.39 . O$ is the origin. Suppose you take measurements and find that $A B$ is $50 \mathrm{cm}, B C$ is $30 \mathrm{cm},$ and $A O$ is 5 $\mathrm{cm}$ . (a) What is the ant's position at points $A, B, C,$ and $D ?$ (b) Find the displacement of the ant and the distance it has moved over each of the following intervals: (i) from $A$ to $B,$ (ii) from $B$ to $C,$ (iii) from $C$ to $D,$ and (iv) from $A$ to $D$ .
Supratim Pal Numerade Educator
Problem 2
$\bullet$ A rocket is moving to the right at half the speed of light relative to the earth. A lightbulb in the center of a room inside the rocket suddenly turns on. Call the light hitting the front end of the room event $A$ and the light hitting the back of the room event $B$ . (See Figure $27.23 . )$ Which event occurs first, $A$ or $B$ , or are they simultaneous, as viewed by (a) an astronaut riding in the rocket and (b) a person at rest on the earth?
Elan Stopnitzky Numerade Educator
Problem 3
(a) The maximum sodium intake for a person on a 2000 calorie diet should be 2400 mg/day. How many grams of sodium is this per day? (b) The recommended daily allowance (RDA) of the trace element chromium is 120$\mu g /$ day. Express this dose in considered safe (although the safety of higher doses has not yet been established. Express this intake in grams per day. (d) The electrical resistance of the human body is approximately 1500 ohms when it is dry. Express this resistance in kilohms. (e) An electrical current of about 0.020 amp can cause muscular spasms so that a person cannot, for example, let go of a wire with that amount of current. Express this current in milliamps.
Bruce Edelman Numerade Educator
Problem 4
A warehouse worker pushes a crate along the floor, as shown in Figure $4.33,$ by a force of 10 $\mathrm{N}$ that points downward at an angle of $45^{\circ}$ below the horizontal. Find the horizontal and vertical components of the push.
Sheh Lit Chang Numerade Educator
Problem 5
A kidnapper demands a 40.0 $\mathrm{kg}$ cube of platinum as a ransom. What is the length of a side?
Problem 6
$\cdot$ For each case in Figure $8.34,$ the system consists of the masses shown with the indicated velocities. Find the $x$ and $y$ components of the net momentum of each system.
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