The tires of a car make 85 revolutions as the car reduces its speed uniformly from 87.0 km/h to 58.0 km/h. The tires have a diameter of 0.84 m. Part A What was the angular acceleration of the tires? Express your answer using two significant figures. VE ΑΣΦ α = Submit Part B t = Request Answer If the car continues to decelerate at this rate, how much more time is required f Express your answer to two significant figures and include the appropria. Submit Part C HÅ Value Request Answer → Units ? ? rad/s²

The tires of a car make 85 revolutions as the car reduces its speed uniformly from 87.0 km/h to 58.0 km/h. The tires have a diameter of 0.84 m. Part A What was the angular acceleration of the tires? Express your answer using two significant figures. VE ΑΣΦ α = Submit Part B t = Request Answer If the car continues to decelerate at this rate, how much more time is required f Express your answer to two significant figures and include the appropria. Submit Part C HÅ Value Request Answer → Units ? ? rad/s²

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

Question A6 A car is initially travelling with a speed of 32 m-s¹ when it slows down with a constant accelera- tion of magnitude 2.1 m-s-2. If the tyres of the car have a radius of 35.0 cm, calculate the number of revolutions that each tyre makes before the car comes to a stop. Assume that the car does not skid. ANDALUSIN STE
Constants A grinding wheel 0.21 m in diameter rotates at 2500 rpm . Part A Calculate its angular velocity in rad/s. Express your answer using three significant figures. V ΑΣφ ? W = rad/s Submit Request Answer Part B What is the linear speed of a point on the edge of the grinding wheel? Express your answer to two significant figures and include the appropriate units. μΑ ? Value Units V = Submit Request Answer Part C P Pearson
A centrifuge in a medical laboratory rotates at an angular speed of 3,400 rev/min. When switched off, it rotates through 52.0 revolutions before coming to rest. Find the constant angular acceleration (in rad/s2) of the centrifuge. rad/s2
A 1.15-kg grinding wheel 22.0 cm in diameter is spinning counterclockwise at a rate of 20.0 revolutions per second. When the power to the grinder is turned off, the grinding wheel slows with constant angular acceleration and takes 80.0 s to come to a rest Part A What was the angular acceleration (in rad/s) of the grinding wheel as it came to rest if we take a counterclockwise rotation as positive? Express your answer in radians per second squared. V ΑΣΦ Submit Request Answer Part B ? rad/s2 How many revolutions did the wheel make during the time it was coming to rest? Express your answer as a number of revolutions. ΜΕ ΑΣΦ Submit Request Answer Provide Feedback ? revolutions Next>>
A centrifuge in a medical research laboratory rotates at an angular speed of 3,650 rev/min. When switched off, it rotates 54.0 times before coming to rest. Find the constant angular acceleration of the centrifuge (in rad/s2). Consider the direction of the initial angular velocity to be the positive direction, and include the appropriate sign in your result. rad/s2
A high-speed drill reaches 2500 rpm in 0.50 s. Part A What is the drill's angular acceleration? Express your answer in radians per second squared. 7VE ΑΣΦ α= Submit rad/s² You have already submitted this answer. Enter a new answer. No credit lost. Try again. Part B 0 = Previous Answers Request Answer ? Through how many revolutions does it turn during this first 0.50 s? Express your answer in revolutions. Π ΑΣΦ ? rev
A diver comes off a board with arms straight up and legs straight down, giving her a moment of inertia about her rotation axis of 18 kg-m². She then tucks into a small ball, decreasing this moment of inertia to 3.6 kg m². While tucked, she makes two complete revolutions in 1.0 s. Part A If she hadn't tucked at all, how many revolutions would she have made in the 1.7 s from board to water? Express your answer using two significant figures. 15] ΑΣΦ N= ? rev
A 0.74-m-diameter solid sphere can be rotated about an axis through its center by a torque of 12.8 m * N which accelerates it uniformly from rest through a total of 160 revolutions in 16.0 s. Part A What is the mass of the sphere? Express your answer to two significant figures and include the appropriate units. M = O μA Submit Value Units Request Answer ?
Part B An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.300 rev/s. The magnitude of the angular acceleration is 0.917 rev/s². Both the the angular velocity and angular accleration are directed counterclockwise. The electric ceiling fan blades form a circle of diameter 0.750 m. Through how many revolutions has the blade turned in the time interval 0.199 s from Part A? Express the number of revolutions numerically. ▸ View Available Hint(s) ΕΠΙ ΑΣΦ 0 回? Submit - Part C rev What is the tangential speed vt of a point on the tip of the blade at time t = 0.199 s ? Express your answer numerically in meters per second. ▸‣ View Available Hint(s) ΤΟ ΑΣΦ 0 m/s
A wind turbine has 12,000 kg blades that are 37 m long. The blades spin at 22 rpm. Part A If we model a blade as a point mass at the midpoint of the blade, what is the inward force necessary to provide each blade's centripetal acceleration? Express your answer with the appropriate units. F= Valye HÅ Submit Request Answer Provide Feedback G → Units ? N
The angular speed of a propeller on a boat increases with constant acceleration from 14 rad/srad/s to 35 rad/srad/s in 2.6 revolutions. Part A What is the angular acceleration of the propeller? Express your answer in radians per second squared.
Dario, a prep cook at an Italian restaurant, spins a salad spinner and observes that it rotates with constant speed 20.0 times in 5.00 seconds and then stops spinning it. The salad spinner rotates 6.00 more times before it comes to rest. Assume that the spinner slows down with constant angular acceleration. Part A What is the magnitude of the angular acceleration of the salad spinner as it slows down? Express your answer numerically in radians per second per second. ▸ View Available Hint(s) a = 8.38 radians/s² Submit ✓ Correct Part B Previous Answers How long does it take for the salad spinner to come to rest? Express your answer numerically in seconds. ▸ View Available Hint(s) t = Templates Symbols undo redo reset keyboard shortcuts help, S