Pearson eText for College Physics: Expl...2nd EditionEugenia Etkina, Gorazd Planinsic Publisher: PEARSON+ISBN: 9780137443000
Pearson eText for College Physics: Expl...
Solutions for Pearson eText for College Physics: Explore and Apply -- Instant Access (Pearson+)
Problem 2RQ:
Review Question 8.2 Give an example of a situation in which (a) a torque produced by a force is zero...Problem 3RQ:
Review Question 8.3 You read the following sentence in a book: In problem solving, put the axis at...Problem 5RQ:
Review Question 8.5 You are trying to hold a heavy dumbbell in one hand so that your arm is...Problem 6RQ:
Review Question 8.6 Why is a ball hanging by a thread in stable equilibrium, while a pencil balanced...Problem 1MCQ:
A falling leaf usually flutters while falling. However, we have learned that the force that Earth...Problem 3MCQ:
A hammock is tied with ropes between two trees. A person lies in it Under what circumstances are its...Problem 5MCQ:
5. A physics textbook lies on top of a chemistry book, which rests on a table. Which force diagram...Problem 6MCQ:
What does it mean if the torque of a force is positive? a. The object exerting the force is on the...Problem 8MCQ:
8. Why do you tilt your body forward when hiking with a heavy backpack?
a. The backpack pushes you...Problem 9MCQ:
9. What does it mean if the torque of a 10-N force is zero?
a. The force is exerted at the axis of...Problem 10MCQ:
What is the maximum angle to the horizontal you can tilt the candleholder in Figure Q8.10 before it...Problem 12CQ:
12. Is it possible for an object not to be in equilibrium when the net force exerted on it by other...Problem 15CQ:
What are the two conditions of equilibrium? What happens if one or the other condition is not...Problem 16CQ:
Give three examples of situations in which an object is starting to rotate even though the sum of...Problem 17CQ:
The force that the body muscles exert on bones that are used to lift various objects is usually five...Problem 18CQ:
A ladder leans against a wall. Construct a force diagram showing the direction of all forces exerted...Problem 19CQ:
Using a crowbar, a person can remove a nail by exerting little force, whereas pulling directly on...Problem 20CQ:
20. Is it more difficult to do a sit-up with your hands stretched in front of you or with them...Problem 21CQ:
Sit on a chair with your feet straight down at the front of the chair. Keeping your back...Problem 22CQ:
Can you balance the tip of a wooden ruler vertically on a fingertip? Why is it so difficult? Design...Problem 23CQ:
Try to balance a sharp wooden pencil on your fingertip, point down. (Hint: A small pocketknife might...Problem 25CQ:
Explain why it is easier to keep your balance while jumping on two feet than while hopping on one.Problem 26CQ:
A carpenters trick to keep nails from bending when they are pounded into a hard material is to grip...Problem 1P:
Determine the torques about the axis of rotation P produced by each of the four forces shown in...Problem 2P:
2. Three 200-N forces are exerted on the beam shown in Figure P8.2. (a) Determine the torques about...Problem 3P:
3. * A 2.0-m-long, 15-kg ladder is resting against a house wall, making a 30° angle with the...Problem 4P:
Figure P8.4 shows two different situations where three forces of equal magnitude are exerted on a...Problem 5P:
Three friends tie three ropes in a knot and pull on the ropes in different directions. Adrienne...Problem 7P:
* Kate joins Jim, Luis, and Adrienne in the rope-pulling exercise described in the previous two...Problem 8P:
You hang a light in front of your house using an elaborate system to keep the 12- kg light in static...Problem 9P:
* Find the values of the forces the ropes exert on the knot if you replace the light in Problem 8.8...Problem 11P:
Determine the masses m1 and m2 of the two objects shown in Figure P8.11 if the force exerted by the...Problem 12P:
* Lifting an engine You work in a machine shop and need to move a huge 640-kg engine up and to the...Problem 13P:
13. * More lifting You exert a 630-N force on rope 2 in the previous problem (Figure P8.12 ). Write...Problem 15P:
15. * Tightrope walking A tightrope walker wonders if her rope is safe. Her mass is 60 kg and the...Problem 16P:
16. * Lifting patients An apparatus to lift hospital patients sitting at the sides of their beds is...Problem 17P:
17. A father (80 kg), mother (56 kg), daughter (16 kg), and son (24 kg) try to occupy seats on the...Problem 19P:
* You place a 3.0-m-long board symmetrically across a 0.5-m-wide chair to seat three physics...Problem 23P:
23. EST Compare the two different designs of nutcracker shown in Figure P8.23 and decide which one...Problem 24P:
Ray decides to paint the outside of his uncles house. He uses a 4.0-m-long board supported by...Problem 25P:
25. * A 2.0-m-long uniform beam of mass 8.0 kg supports a 12.0-kg bag of vegetables at one end and a...Problem 26P:
* A uniform beam of length / and mass m supports a bag of mass m1 at the left end, another bag of...Problem 31P:
31. * An 80-kg clown sits on a 20-kg bike on a tightrope attached between two trees. The center of...Problem 32P:
s center of mass? (Hint: You can think of cutting the hole as adding material of negative mass to...Problem 33P:
Leg support A persons broken leg is kept in place by the apparatus shown in Figure P8.33. If the...Problem 36P:
* If the force F shown in Figure P8.35 is 840 N and the bottom right edge of the box is slightly off...Problem 38P:
38. * You decide to hang another plant from a 1.5-m-long 2.0-kg horizontal beam that is attached by...Problem 40P:
* What mechanical work must you do to lift a log that is 3.0 m long and has a mass of 100 kg from...Problem 41P:
41. * A 70-g meter stick has a 30-g piece of modeling clay attached to the end. Where should you...Problem 42P:
* You are trying to tilt a very tall refrigerator (2.0 m high, 1.0 m deep, 1.4m wide, and 100 kg) so...Problem 44P:
44. * You have an Atwood machine (see Figure 4.9 ) with two blocks each of mass m attached to the...Problem 45P:
* EST You stand sideways in a moving train. Estimate how far apart you should keep your feet so that...Problem 46GP:
46. EST Your hand holds a liter of milk (mass about 1 kg) while your arm is bent at the elbow in a ...Problem 47GP:
EST Body torque You hold a 4.0-kg computer. Estimate the torques exerted on your forearm about the...Problem 49GP:
49. BIO Using triceps to push a table A man pushes on a table exerting a 20-N downward force with...Problem 53GP:
53.* BIO Dumbbell lift IA woman lifts a 3.6-kg dumbbell in each hand with her arm in a horizontal...Problem 54GP:
s shoulder joint exerts on her humerus.Problem 56GP:
* Eiichi has purchased an adjustable hand grip to use for strengthening hands, fingers, and wrists....Problem 57GP:
57. *BIO While browsing books on neurophysiology, you come across a book published in 1967 by Soviet...Problem 58GP:
58. ** Touch detector You have two force sensors connected to a computer and a meter stick of known...Problem 60GP:
* An 80-kg person stands at one end of a 130-kg boat. He then walks to the other end of the boat so...Problem 61GP:
61. EST Two people (50 kg and 75 kg) holding hands stand on Rollerblades 1.0 m apart. (a) Estimate...Problem 63RPP:
BIO Muscles work in pairs Skeletal muscles produce movements by pulling on tendons, which in turn...Problem 64RPP:
BIO Muscles work in pairs Skeletal muscles produce movements by pulling on tendons, which in turn...Problem 65RPP:
BIO Muscles work in pairs Skeletal muscles produce movements by pulling on tendons, which in turn...Problem 66RPP:
BIO Muscles work in pairs Skeletal muscles produce movements by pulling on tendons, which in turn...Problem 67RPP:
BIO Improper lifting and the back A careful study of human anatomy allows medical researchers to use...Problem 68RPP:
BIO Improper lifting and the back A careful study of human anatomy allows medical researchers to use...Browse All Chapters of This Textbook
Chapter 2 - Kinematics: Motion In One DimensionChapter 3 - Newtonian MechanicsChapter 4 - Applying Newton’s LawsChapter 5 - Circular MotionChapter 6 - Impulse And Linear MomentumChapter 7 - Work And EnergyChapter 8 - Extended Bodies At RestChapter 9 - Rotational MotionChapter 10 - Vibrational MotionChapter 11 - Mechanical Waves
Chapter 12 - GasesChapter 13 - Static FluidsChapter 14 - Fluids In MotionChapter 15 - First Law Of ThermodynamicsChapter 16 - Second Law Of ThermodynamicsChapter 17 - Electric Charge, Force, And EnergyChapter 18 - The Electric FieldChapter 19 - Dc CircuitsChapter 20 - MagnetismChapter 21 - Electromagnetic InductionChapter 22 - Reflection And RefractionChapter 23 - Mirrors And LensesChapter 24 - Wave OpticsChapter 25 - Electromagnetic WavesChapter 26 - Special RelativityChapter 27 - Quantum OpticsChapter 28 - Atomic PhysicsChapter 29 - Nuclear PhysicsChapter 30 - Particle Physics
Sample Solutions for this Textbook
We offer sample solutions for Pearson eText for College Physics: Explore and Apply -- Instant Access (Pearson+) homework problems. See examples below:
Chapter 2, Problem 1RQChapter 3, Problem 1RQChapter 4, Problem 1RQChapter 5, Problem 1RQChapter 6, Problem 1RQChapter 7, Problem 1RQIntroduction: Center of mass is a point where the complete mass of any object is said to be...Chapter 9, Problem 1RQChapter 10, Problem 1RQ
Chapter 11, Problem 1RQIntroduction: The following mechanisms can be logically constructed to understand the reason behind...Chapter 13, Problem 1RQIntroduction: Bernoulli’s principle states that fluids moving at a faster velocity have lesser...Chapter 15, Problem 1RQIntroduction: Energy of an isolated system, such as the universe always remains constant, as stated...Chapter 17, Problem 1RQChapter 18, Problem 1RQChapter 19, Problem 1RQChapter 20, Problem 1RQChapter 21, Problem 1RQIntroduction: Experimentally, it has been observed that, the projection on the wall will be upside...Chapter 23, Problem 1RQChapter 24, Problem 1RQChapter 25, Problem 1RQChapter 26, Problem 1RQIntroduction: Planck’s hypothesis stated that an accelerated charged particle can radiate an...Introduction: The Rutherford atomic model is also known as the planetary or nuclear model of an...Introduction: Rutherford, in 1899, conducted an experiment in which he set up two parallel metal...Introduction: Beta decay is referred to as the transformation of protons into neutrons and...
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