College Physics
2nd Edition
ISBN: 9780134601823
Author: ETKINA, Eugenia, Planinšič, G. (gorazd), Van Heuvelen, Alan
Publisher: Pearson,
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 6, Problem 72GP
* While dangling a hairdryer by its cord, as shown in Figure P6.72, you observe that the cord is vertical when the hairdryer is off and that it makes an angle of
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
I Review I Constants
A 1500 kg car traveling at 17 m/s suddenly runs out of
gas while approaching the valley shown in the
figure(Figure 1). The alert driver immediately puts the car
in neutral so that it will roll.
Part A
You may want to review (Pages 234 - 238).
What will be the car's speed as it coasts into the gas station on the other side of the valley?
For general problem-solving tips and strategies for this
topic, you may want to view a Video Tutor Solution of Car
rolling down a hill.
Express your answer to two significant figures and include the appropriate units.
HÅ
Value
Units
V =
Submit
Request Answer
Figure
1 of 1
Provide Feedback
Next >
Gas station
15 m
10 m
Alex Morgan, one of America's best forwards, kicks a 450. g soccer ball that was moving towards her at a speed of 12.0m/s, the impact caused the ball to leave her foot with a velocity of 20.0 m/s in the opposite direction.
a. If the impact lasted for 0.250s, what force (magnitude and direction) did Alex exert on the soccer ball?
b. What is one thing that she could do to make the soccer ball have a larger change in momentum?
Tarzan (83 kg) is swinging on a vine that is 0.8 meters long into the waiting arms of Jane below. The net force on Tarzan as he swings is 354 N. Unfortunately for him, he misjudges his swing and instead slams into a tree when the vine is completely vertical. His impact with the tree lasts 0.02 seconds, and Jane is not impressed. *You can assume he puts a constant force on the tree as he crashes*To make matters worse, after slamming to a stop, he slides down the tree with a constant acceleration of magnitude 0.8 m/s2.
What is Tarzan's velocity right before he slams into the tree?
ROUND THIS VALUE TO THE HUNDREDTHS PLACE AND USE THIS ROUNDED VALUE FOR THE REST OF THE PROBLEM!
What is the magnitude of the force that the tree puts on Tarzan?
What is the magnitude of the frictional force between Tarzan and the tree as he
slides down?
What is Tarzan's kinetic energy 0.6 s after he begins sliding down the tree?
What is Tarzan’s momentum 0.6 s after he begins sliding down…
Chapter 6 Solutions
College Physics
Ch. 6 - Review Question 6.1 When you burn a log in a fire...Ch. 6 - Review Question 6.2 Ryan says, “Based on the...Ch. 6 - Review Question 6.3 An apple is falling from a...Ch. 6 - Review Question 6.4 If in solving the problem in...Ch. 6 - Review Question 6.5 As the bullet enters the block...Ch. 6 - Review Question 6.6 The following equation is a...Ch. 6 - Review Question 6.7 Object A, moving in the...Ch. 6 - The gravitational force that Earth exerts on an...Ch. 6 - A bullet fired at a door makes a hole in the door...Ch. 6 - How would you convince somebody that the momentum...
Ch. 6 - 4. A wagon full of medicine balls is rolling along...Ch. 6 - 5. When can you apply the idea that momentum is...Ch. 6 - 6. Choose an example in which the momentum of a...Ch. 6 - Figure Q6.7 shows the velocity-versus-time graphs...Ch. 6 - Which is a safer car bumper in a collision: one...Ch. 6 - 9. Why does an inflated balloon shoot across a...Ch. 6 - In which situation does the momentum of a tennis...Ch. 6 - 11. A toy car with very low friction wheels and...Ch. 6 - You hold a clay ball above a scale and then drop...Ch. 6 - 13. You hold a rubber ball above a scale and then...Ch. 6 - 14 Two battery-powered fan carts are resting on a...Ch. 6 - 15. According to a report on traumatic brain...Ch. 6 - 16. Jim says that momentum is not a conserved...Ch. 6 - Say five important things about momentum (for...Ch. 6 - Three people are observing the same car. One...Ch. 6 - When would a ball hitting a wall have a greater...Ch. 6 - 20. In the previous question, in which case does...Ch. 6 - 21. Explain the difference between the concepts of...Ch. 6 - Why do you believe that momentum is a conserved...Ch. 6 - A heavy bar falls straight down onto the bed of a...Ch. 6 - Construct impulse-momentum bar charts to represent...Ch. 6 - A person moving on Rollerblades throws a medicine...Ch. 6 - A small ball of mass m rolls at a constant speed v...Ch. 6 - 1. You and a friend are playing tennis. (a) What...Ch. 6 - 2. You are hitting a tennis ball against a wall....Ch. 6 - A ball of mass m and speed v travels horizontally,...Ch. 6 - Figure P6.4 shows the velocity-versus-time graph...Ch. 6 - 5. A 1300-kg car is traveling at a speed of 10 m/s...Ch. 6 - * The rules of tennis specify that the 0.057-kg...Ch. 6 - * A cart of mass m moving right at speed v with...Ch. 6 - 8. * A cart of mass m moving right collides with...Ch. 6 - ESTEstimate your momentum when you are walking at...Ch. 6 - 10. A 100-g apple is falling from a tree. What is...Ch. 6 - * The same 100-g apple is falling from the tree....Ch. 6 - 12. Why does Earth exert the same impulse during...Ch. 6 - 13. * Van hits concrete support In a crash test, a...Ch. 6 - BIO Force exerted by heart on blood About 80 g of...Ch. 6 - 15. The train tracks on which a train travels...Ch. 6 - 16. ** EST Your friend is catching a falling...Ch. 6 - 17 BIO Traumatic brain injury According to a...Ch. 6 - * A 65-kg astronaut pushes against the inside back...Ch. 6 - 19. * You decide to use your garden hose to wash...Ch. 6 - 20. * An egg rolls off a kitchen counter and...Ch. 6 - 21. ** Proportional reasoning During a collision...Ch. 6 - (a) What force is required to stop a 1500-kg car...Ch. 6 - 23. ** EST You drop a 78-g ball vertically onto a...Ch. 6 - * Air bag force on head The graph in Figure P6.24...Ch. 6 - 25. * Equation Jeopardy 1 Invent a problem for...Ch. 6 - * Equation Jeopardy 2 Invent a problem for which...Ch. 6 - * Two carts (100 g and 150 g) on an air track are...Ch. 6 - * A tennis ball of mass m hits a wall at speed v...Ch. 6 - 29. * A tennis ball traveling at a speed of v...Ch. 6 - Prob. 30PCh. 6 - Prob. 31PCh. 6 - * You hold a beach ball above your head and then...Ch. 6 - 33. * A basketball player drops a 0.60-kg...Ch. 6 - * Bar chart Jeopardy Invent a problem for each of...Ch. 6 - * A baseball bat contacts a 0.145-kg baseball for...Ch. 6 - A cannon mounted on the back of a ship fires a...Ch. 6 - A 10-kg sled carrying a 30-kg child glides on a...Ch. 6 - 38. A 10,000-kg coal car on the Great Northern...Ch. 6 - * Avoiding chest injury A person in a car during a...Ch. 6 - * Bruising apples An apple bruises if a force...Ch. 6 - * Fast tennis serve The fastest server in womens...Ch. 6 - 42. * You are in an elevator whose cable has just...Ch. 6 - ** You jump from the window of a burning hotel and...Ch. 6 - * After a 70-kg person steps from a boat onto the...Ch. 6 - 45. * BIO Leg injuries during car collisions...Ch. 6 - 46. * BIO Bone fracture The zygomatic bone in the...Ch. 6 - 47. ** You are investigating a newly discovered...Ch. 6 - 48. * An impulse of stops your head during a car...Ch. 6 - A cart is moving on a horizontal track when a...Ch. 6 - 50. * A cart is moving on a horizontal track. A...Ch. 6 - 51. Your friend shoots an 80-g arrow through a...Ch. 6 - 52. * BIO EST Cuttlefish use jet propulsion to...Ch. 6 - * BIO Potassium decay in body tissue Certain...Ch. 6 - 54. Drifting space mechanic An astronaut with a...Ch. 6 - Prob. 55PCh. 6 - 56. Rocket stages A 5000-kg rocket ejects a...Ch. 6 - 57. * A rocket has just ejected fuel. With the...Ch. 6 - 58. * Car collision A 1180-kg car traveling south...Ch. 6 - 59. * Ice skaters collide While ice skating, you...Ch. 6 - 1015-kg meteorite traveling at about 10 km/s...Ch. 6 - 61. * Three friends play beach volleyball. The...Ch. 6 - 62. ** Two forces exert impulses on a hockey puck,...Ch. 6 - 64. * A cart of mass m traveling in the negative...Ch. 6 - 65. ** Two cars of unequal mass moving at the same...Ch. 6 - 66. ** Restraining force during collision A...Ch. 6 - * EST A carpenter hammers a nail using a 0.80-kg...Ch. 6 - 68. ** A 0.020-kg bullet traveling at a speed of...Ch. 6 - 69. * Two identical lightweight arms are mounted...Ch. 6 - * In a first experiment, a 30-g clay ball is shot...Ch. 6 - 71. ** EST A record rainstorm produced 304.8 mm...Ch. 6 - 72. * While dangling a hairdryer by its cord, as...Ch. 6 - 73. ** While dangling a hairdryer by its cord, as...Ch. 6 - Prob. 74GPCh. 6 - 75. * A 2045-kg sports utility vehicle hits the...Ch. 6 - 76. ** A car of mass m1 traveling north at a speed...Ch. 6 - ** You have two carts, a force probe connected to...Ch. 6 - BIO Heartbeat detector A prisoner tries to escape...Ch. 6 - BIO Heartbeat detector A prisoner tries to escape...Ch. 6 - BIO Heartbeat detector A prisoner tries to escape...Ch. 6 - BIO Heartbeat detector A prisoner tries to escape...Ch. 6 - BIO Heartbeat detector A prisoner tries to escape...Ch. 6 - Space Shuttle launch The mass of the Space Shuttle...Ch. 6 - Space Shuttle launch The mass of the Space Shuttle...Ch. 6 - Space Shuttle launch The mass of the Space Shuttle...Ch. 6 - Space Shuttle launch The mass of the Space Shuttle...Ch. 6 - Space Shuttle launch The mass of the Space Shuttle...Ch. 6 - Space Shuttle launch The mass of the Space Shuttle...Ch. 6 - Space Shuttle launch The mass of the Space Shuttle...
Additional Science Textbook Solutions
Find more solutions based on key concepts
In which extrasolar planet system(s) (A–D) would we receive light from the star with the largest Doppler shift?...
Lecture- Tutorials for Introductory Astronomy
A hemispherical bowl is at rest on a frictionless counter. A mouse drops onto the bowls rim from a cabinet dire...
Essential University Physics: Volume 1 (3rd Edition)
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective
37. Two moles of an ideal gas are heated at constant pressure from T = 27°C to T = 107°C. (a) Draw a pV diagram...
College Physics (10th Edition)
23.14 A particle with charge +4.20 nC is in a uniform electric field directed to the left. The charge is relea...
University Physics with Modern Physics (14th Edition)
The enthalpy of combustion of a gallon (3.8 liters) of gasoline is about 31,000 kcal. The enthalpy of combustio...
An Introduction to Thermal Physics
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
- A Show that Equation 11.4 (the impulsemomentum theorem) is another statement of Newtons second law.arrow_forwardA wooden block of mass M is initially at rest at the edge of a frictionless table at a height h above the ground. A bullet of mass m is fired horizontally into the block and embeds itself in the block. The block lands a distance d from the edge of the table. Find an expression for the speed of the bullet just before the collision.arrow_forwardA cart filled with sand rolls at a speed of 1.0 m/s along a horizontal path without friction. A ball of mass m = 2.0 kg is thrown with a horizontal velocity of 8.0 m/s toward the cart as shown in Figure P11.79. The ball gets stuck in the sand. What is the velocity of the cart after the ball strikes it? The mass of the cart is 15 kg. FIGURE P11.79 Problems 79 and 80.arrow_forward
- A 2.45-kg ball is shot into a 0.450-kg box that is at rest on a frictionless, horizontal table (Fig. P11.25); after the collision, the ball is embedded in the box. The box is attached to a 0.30-m rope that is attached to the table on the other end. The balls initial velocity is perpendicular to the rope as shown. If the balls initial speed before impact is 13.5 m/s, what is the tension in the rope after the collision? FIGURE P11.25arrow_forwardA truck collides with a small, empty parked car. Explain your answers to the parts below. a. Compare the force exerted by the truck on the car with the force exerted by the car on the truck. b. Compare the impulse exerted by the truck on the car with the impulse exerted by the car on the truck. c. Compare the change in the trucks momentum with the change in the cars momentum.arrow_forward* TWO friends at rest decide to start add pushing off against each other on an icy smooth surface with no friction.. The first person weight is 675 N and the second is 725 N. A Assume the heavier person travels to the right at 1. 30 m/s towards the positive x how fast will the lighter person travel. There are no external forces. Express your answer in meters per second. Ⓡ Find the total kinetic energy "created by this two friend situation. Express your answer in joules. axisarrow_forward
- A hula hoop is released from rest at the top of a playground slide. In going down the slide, the center of mass of the hula hoop moves down 3.82 meters. a. If the slide were frictionless and the hula hoop did not roll, how fast would the hula hoop be going at the bottom of the slide? Include units in your answer. b. In reality, the hula hoop rolls. How fast is the hula hoop (the center of mass of the hula hoop) going at the bottom of the slide? Include units in your answer. PLEASE RESPOND IN HANDWRITINGarrow_forwardA. Answer the following questions with a scientific explanation. Use the given linesto answer each item. Supposed that you have to jump from a second story window. Which would you prefer? To jump onto a wood or a concrete surface? Which has a greater momentum, an airplane parked in a hangar or a car going down a hill?arrow_forwardYou, mass = m, are traveling at a constant velocity, u, on a skateboard. Your friend, mass= 1.25m, hops on and pushes off the ground with force, F. propelling the skateboard forward at a greater velocity. For simplicity, consider the skateboard is massless. If the force is applied for a distance d, by which of the following factors did the kinetic energy change? Elimination Tool Select one answer A Fd+ 0.22mv² B C 22 5.06 4.5Fd mv² D Fd +1arrow_forward
- View Policies Current Attempt in Progress Consult Conceptual Example 9 in preparation for this problem. The drawing shows a person who, starting from rest at the top of a cliff, swings down at the end of a rope, releases it, and falls into the water below. There are two paths by which the person can enter the water. Suppose he enters the water at a speed of 17.0 m/s via path 1. How fast is he moving on path 2 when he releases the rope at a height of 3.79 m above the water? Ignore the effects of air resistance. Number eTextbook and Media Save for Later Path 2 Units Path 1 Attempts: 0 of 5 used Submit Answerarrow_forward*Two objects have an elastic collision. Before the collision they approach one another with a velocity of18 m/s. With what velocity will they be separating after the collision?arrow_forwardHockey puck A has half the mass of hockey puck B. Starting from rest, both pucks are pulled the same distance across frictionless ice by strings with the same tension. Compare the final kinetic energies of puck A and puck B. O Puck A and puck B have the same final kinetic energy. O Puck A has twice the kinetic energy of puck B. O Puck A has half the kinetic energy as puck B. O None of the above is true.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Impulse Derivation and Demonstration; Author: Flipping Physics;https://www.youtube.com/watch?v=9rwkTnTOB0s;License: Standard YouTube License, CC-BY