College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 5, Problem 6CQ
Two expressions were used for the drag force experienced by a moving object a liquid. One depended upon the speed, while the other was proportional to the square of the speed. In which types of motion would each of these expressions be more applicable than the other one?
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
A 28.0-kg block is connected to an empty 2.26-kg bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is 0.48 and the coefficient of kinetic friction between the table and the block is 0.25. Sand is gradually added to the bucket until the system just begins to move. Ignore the mass of the cord.
Calculate the mass of sand added to the bucket.
Express your answer to two significant figures and include the appropriate units.
m= _______ units
Calculate the acceleration of the system.
Express your answer to two significant figures and include the appropriate units.
a= _________ units
A desperate hiker has to think fast to help his
friend who has fallen below him. Quickly, he ties a
rope to a rock of mass ma and makes his way over
the ledge (see the figure).
If the coefficient of maximum static friction
between the rock and the ground is µ, and the mass
of the hiker is mâ, what is the maximum mass of
the friend, mc, that the rock can hold so the hikers
can then make their way up over the ledge?
Assume the rope is parallel to the ground and the
point where the rope passes over the ledge
is frictionless.
mc
= Ju
Running on a treadmill is slightly easier than running outside because there is no drag force to work against. Suppose a 60 kg runner completes a 5.0 km race in 15 minutes.
Determine the drag force on the runner during the race. Suppose that the cross-section area of the runner is 0.72 m2.
What is this force as a fraction of the runner's weight?
Chapter 5 Solutions
College Physics
Ch. 5 - Define normal force. What is its relationship to...Ch. 5 - The glue on a piece of tape can exert forces. Can...Ch. 5 - When you learn to drive, you discover that you...Ch. 5 - When you push a piece of chalk across a...Ch. 5 - Athletes such as swimmers and bicyclists wear body...Ch. 5 - Two expressions were used for the drag force...Ch. 5 - As cars travel, oil and gasoline leaks onto the...Ch. 5 - Why can a squirrel jump from a tree branch to the...Ch. 5 - The elastic properties of the arteries are...Ch. 5 - What are you feeling when you feel your pulse?...
Ch. 5 - Examine different types of shoes, including sports...Ch. 5 - Would you expect your height to be different...Ch. 5 - Why can a squirrel from a tree branch to the...Ch. 5 - Explain why pregnant women often suffer from back...Ch. 5 - An old carpenter's trick to keep nails from...Ch. 5 - When a glass bottle full of vinegar warms up, both...Ch. 5 - A physics major is cooking breakfast when he...Ch. 5 - (a) When rebuilding her car's engine, a physics...Ch. 5 - (a) What is the maximum frictional force in the...Ch. 5 - Suppose you have a 120-kg wooden crate resting on...Ch. 5 - (a) If half of the weight of a small 1.00103 kg...Ch. 5 - A team of eight dogs pulls a sled with waxed wood...Ch. 5 - Consider the 65.0-kg ice skater being pushed by...Ch. 5 - Show that the acceleration of any object down a...Ch. 5 - Show that the acceleration of any object down an...Ch. 5 - Calculate the deceleration of a snow boarder going...Ch. 5 - (a) Calculate the acceleration of a skier heading...Ch. 5 - If an object is to rest on an incline without...Ch. 5 - Calculate the maximum deceleration of a car that...Ch. 5 - Calculate the maximum acceleration of a car that...Ch. 5 - Repeat Exercise 5.14 for a car with four-wheel...Ch. 5 - A freight train consists of two 8.00105 -kg...Ch. 5 - Consider the 52.0-kg mountain climber in Figure...Ch. 5 - A contestant in a winter sporting event pushes a...Ch. 5 - Repeat Exercise 5.18 with the contestant pulling...Ch. 5 - The terminal velocity of a person falling in air...Ch. 5 - A 60-kg and a go-kg skydiver jump from an airplane...Ch. 5 - A 560-g squirrel with a surface area of 930 cm2...Ch. 5 - To maintain a constant speed, the force provided...Ch. 5 - By what factor does the drag force on a car...Ch. 5 - Calculate the speed a spherical rain drop would...Ch. 5 - Using Stokes' law, verify that the units for...Ch. 5 - Find the terminal velocity of a spherical...Ch. 5 - Stokes' law describes sedimentation of particles...Ch. 5 - During a circus act, one performer swings upside...Ch. 5 - During a wrestling match, a 150 kg wrestler...Ch. 5 - (a) The "lead" in pencils is a graphite...Ch. 5 - TV broadcast antennas are the tallest artificial...Ch. 5 - (a) By how much does a 65.0-kg mountain climber...Ch. 5 - A 20.0-m tall hollow aluminum flagpole is...Ch. 5 - As an oil well is drilled, each new section of...Ch. 5 - Calculate the force a piano tuner applies to...Ch. 5 - A vertebra is subjected to a shearing force of 500...Ch. 5 - A disk between vertebrae in the spine is subjected...Ch. 5 - When using a pencil eraser, you exert a vertical...Ch. 5 - To consider the effect of wires hung on poles, we...Ch. 5 - A farmer making grape juice fills a glass bottle...Ch. 5 - (a) When water freezes, its volume increases by...Ch. 5 - This problem returns to the tightrope walker...Ch. 5 - The pole in Figure 5.24 is at a 90.0° bend in a...
Additional Science Textbook Solutions
Find more solutions based on key concepts
One mole of an ideal monatomic gas occupies a volume of 1.0102 m3 at a pressure of 2.0105 N/m2. (a) What is the...
University Physics Volume 2
Generalize from your results to answer the following question: Under what condition will the momentum of a syst...
Tutorials in Introductory Physics
The proton is a composite particle composed of three quarks, all of which are either up quarks (u; charge +23e)...
Essential University Physics: Volume 2 (3rd Edition)
The pV-diagram of the Carnot cycle.
Sears And Zemansky's University Physics With Modern Physics
1. A person gets in an elevator on the ground floor and rides it to the top floor of a building. Sketch a veloc...
College Physics: A Strategic Approach (4th Edition)
4. When a smooth-flowing stream of water comes out of a faucet, it narrows as it falls. Why does it do this?
College Physics (10th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the magnitude of the lift force is given by Fl (0.018 N s2/m2) v2 The bat can fly in a horizontal circle by banking its wings at an angle , as shown in Figure P7.72. In this situation, the magnitude of the vertical component of the lift force must equal the bats weight. The horizontal component of the Figure P7.72. force provides the centripetal acceleration. (a) What is the minimum speed that the bat can have if its mass is 0.031 kg? (b) If the maximum speed of the bat is 10 m/s, what is the maximum banking angle that allows the bat to stay in a horizontal plane? (c) What is the radius of the circle of its flight when the bat flies at its maximum speed? (d) Can the bat turn with a smaller radius by flying more slowly?arrow_forwardThe figure below illustrates the motion of an object on an inclined surface. The angle of inclination is 30 degrees. The data are as follows: a) The object's mass is 4 kg, b) g = 10 m/s². c) Coefficient of the kinetic friction = 0.5 / sqrt (3) and coefficient of the static friction = 1 / sqrt ( 3 ). d) Magnitude of the force F = 40 N. Does the object move up or down, or is it at rest? If up, enter 2. If down, enter 1. If at rest, enter 0. 30⁰ Farrow_forwardA 11 N horizontal force pushes a block weighing 5.4 N against a vertical wall (see the figure). The coefficient of static friction between the wall and the block is 0.56, and the coefficient of kinetic friction is 0.34. Assume that the block is not moving initially.(a) Will the block move? ("yes" or "no") (b) In unit-vector notation Fi + Fj, what is the force on the block from the wall? (a) (b) Number i î+ i Ĵ Unitsarrow_forward
- At an accident scene on a level road, investigators measure a car's skid mark to be 88 m long. It was a rainy day and the coefficient of friction was estimated to be 0.35. a.)Use these data to determine the speed of the car when the driver slammed on (and locked) the brakes. Express your answer to two significant figures and include the appropriate units.arrow_forwardThe heaviest invertebrate is the giant squid, which is estimated to have a weight of about 0.20 tons spread out over its length of 36 feet. What is its weight in newtons? Incorrect: Your answer is incorrect. Your response differs significantly from the correct aarrow_forwardDetermine the magnitude of the force exerted by cracker (a) on the nut. Determine the magnitude of the force exerted by cracker (b) on the nut.arrow_forward
- During a step, the force on the hip joint is approximately 2.5 times the weight of the person taking the step. For a single step, the joint slides approximately 30 mm inside the socket. The coefficient of kinetic friction for synovial fluid that lubricates the joint is 0.003. 1. For a 60 kg person, what is the magnitude of the frictional force on the joint?arrow_forwardA 28.0-kg block is connected to an empty 2.60-kg bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is 0.47 and the coefficient of kinetic friction between the table and the block is 0.26. Sand is gradually added to the bucket until the system just begins to move. Ignore mass of cord. Calculate the mass of sand added to the bucket and acceleration of the system.arrow_forwardA 24-N force is applied to a 7-kg object to move it with a constant velocity of 6.8m / s across a level surface. The coefficient of friction between the object and the surface is approximately Round your answer to the hundredths place. Use g=10m/s^2arrow_forward
- A certain orthodontist uses a wire brace to align a patient's crooked tooth as in the figure below. The tension in the wire is adjusted to have a magnitude of 17.0 N. Find the magnitude of the net force exerted by the wire on the crooked tooth.arrow_forwardWhich statement about kinetic friction and static friction is true? (Some of the options mention a horizontal force that friction opposes. This means that a force is pulling horizontally and friction is acting in the opposite direction.) Your answer: The force of kinetic friction changes if the speed of the object decreases. The force of kinetic friction changes if the horizontal force (or forces) it opposes gets weaker. The force of static friction changes if the speed of the object decreases. The force of static friction changes if O the horizontal force (or forces) it opposes gets weaker.arrow_forwardYou are pushing a metal crate against a metal floor. The two surfaces have a static coefficient of friction of 0.62 and a kinetic coefficient of friction of 0.50. The floor is horizontal, and the crate has a mass of 25.0 kg. What is the minimum force you need to apply to get the crate moving from rest? Give your answer in units of N, to three significant figures.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Newton's Third Law of Motion: Action and Reaction; Author: Professor Dave explains;https://www.youtube.com/watch?v=y61_VPKH2B4;License: Standard YouTube License, CC-BY