Concept explainers
The earth’s radius is about 4000 miles. Kampala, the capital of Uganda, and Singapore are both nearly on the equator. The distance between them is 5000 miles. The flight from Kampala to Singapore takes 9.0 hours. What is the planes
Learn your wayIncludes step-by-step video
Chapter 4 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (Chs 1-42) Plus Mastering Physics with Pearson eText -- Access Card Package (4th Edition)
Additional Science Textbook Solutions
Campbell Essential Biology with Physiology (5th Edition)
Organic Chemistry (8th Edition)
Chemistry (7th Edition)
Applications and Investigations in Earth Science (9th Edition)
Microbiology: An Introduction
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
- A cat rides a merry-go-round turning with uniform circular motion. At time 1.4s, the cat's velocity is (5m/s)i + (5m/s) j. measured on a horizontal xy coordinate system. At 9.4, the cat's velocity is (-5m/s)i + (-5m/s) j. What is the magnitude of the cat's centripetal acceleration?arrow_forwardA car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure below. The length of the arc ABC is 236 m, and the car completes the turn in 35.0 s. 35.0° В (a) What is the acceleration when the car is at B located at an angle of 35.0°? Express your answer in terms of the unit vectors î and î m/s? î + m/s? j (b) Determine the car's average speed. m/s (c) Determine its average acceleratiorr during the 35.0-s interval. m/s² î m/s² î +arrow_forwardL83. While following a treasure map, you start at an old oak tree. You first walk 825 m directly south, then turn and walk 1.25 km at 30.0° west of north, and finally walk 1.00 km at 40.0° north of cast, where you find the treasure: a biography of Isaac Newton! (a) To retum to the old oak trec, in what direction should you head and how far will you walk? Use components to solve this problem.arrow_forward
- An object moves in a circular path at a constant speed. What is the relationship between the directions of the object's velocity and acceleration vectors? The velocity vector points in a direction tangent to the circular path. The acceleration is zero. The velocity and acceleration vectors are perpendicular. The velocity and acceleration vectors point in opposite directions. The velocity and acceleration vectors point in the same direction. The velocity vector points toward the center of the circular path. The acceleration is zero.arrow_forwardA ball is traveling at a constant speed (v) of 40.0 m/s in a circle with a radius (r) of 6.0 m. (Hint: The circumference C = 2πr) The centripetal acceleration is ZERO a. False b. True The total distance traveled by the ball is: How long in time does it take for the ball complete one circle? The displacement traveled by the ball is: The average speed of the ball is: The average velocity of the ball is:arrow_forwardA particle is moving in a circle of radius R. At t = 0, it is located on the x-axis. The angle the particle makes with the positive x -axis is given by 0 = At² + Bt³ What is the magnitude of the tangential acceleration, atan of the particle at a time t > 0? Express your answer in terms of R, t, A, and B as needed. What is the magnitude of the radial acceleration, larad of the particle at a time t > 0? Express your answer in terms of R, t, A, and B as needed.arrow_forward
- A runner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 40 m. The runner starts the race at a constant speed. If she completes the 200 m dash in 22.2 s and runs at constant speed throughout the race, what is the magnitude of her centripetal acceleration (in m/s2) as she runs the curved portion of the track? m/s?arrow_forwardObjects that are at rest relative to Earth’s surface are in circular motion due to Earth’s rotation. What is the radial acceleration of a painting hanging in the Prado Museum in Madrid, Spain, at a latitude of 40.2° North? (Note that the object’s radial acceleration is not directed toward the center of the Earth.) The answer is not 353.arrow_forwardplease type the answer if you canarrow_forward
- An object is moving counter-clockwise in uniform circular motion at a constant speed of 3 m/s in a circle of radius 1.2 m. The magnitude of radial acceleration is 7.5 m/s?. Point A is at an angle of 15 degrees from the x axis. Sketching the position, velocity, and acceleration vectors may be helpful. A. Calculate the x and y components of the position vector for point A. B. Calculate the x and y components of the velocity vector for point A. C. Calculate the x and y components of the acceleration vector for point A. +y A +x 15° (0,0)arrow_forwardA wind turbine is rotating counterclockwise at 0.75 rev/.s and slows to a stop in 10 s. It's blades are 15 m in length. What is the centripetal acceleration of the tip of the blades at t=1s?arrow_forwardA football player releases a ball with the initial conditions shown in the figure. Determine the radius of curvature of the trajectory at times t = 0.7 sec and t = 1.6 sec, where t = 0 is the time of release from the quarterback's hand. For each case, compute the time rate of change of the speed. 2b = 77 ft/sec e = 29° Answers: For t = 0.7 sec, ft, v = i ft/sec2 For t = 1.6 sec, i ft, v = i ft/sec2arrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON