When a fan is turned off, its angular speed decreases uniformly from 10.0 rad/s to 6:30 rad/s in 5.00 s What is the magnitude of the angular acceleration of the fan? a. 0.360 rad/s² b. 0.740 rad/s² c. 0.921 rad/s² d. 1.35 rad/s² E. Other:
When a fan is turned off, its angular speed decreases uniformly from 10.0 rad/s to 6:30 rad/s in 5.00 s What is the magnitude of the angular acceleration of the fan? a. 0.360 rad/s² b. 0.740 rad/s² c. 0.921 rad/s² d. 1.35 rad/s² E. Other:
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)...
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Concept explainers
Angular speed, acceleration and displacement
Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.
Angular Position
Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.
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Transcribed Image Text:46.
When a fan is turned off, its angular speed decreases uniformly from 10.0 rad/s to 6.30 rad/s in 5.00 s
What is the magnitude of the angular acceleration of the fan?
a. 0.360 rad/s²
b. 0.740 rad/s²
c. 0.921 rad/s²
d. 1.35 rad/s²
E. Other:
47.
1. A mouse runs down the hallway with an initial speed of 10 m/s for 5 s, then uniformly increases its
speed to 15 m/s in 8 s. What was its acceleration during the 2nd part of the motion?
c. 6 m/s
d. 8 m/s
a. 2 m/s
b. 4 m/s
E. Other:
48.
Which angle has the farthest horizontal distance in a projectile motion?
a. 12°
b. 30°
c. 45°
E. Other:
49.
d. 60°
Which of the following statements correctly describes Newton's first law of motion?
A. An object will not change its velocity unless a net force acts on the object.
B. An object will change direction if a net force acts on the object.
C. An object will not move unless net force acts on the object.
D. An object will move until net force acts on the object.
E. Other:
50.
What friction that exists between a stationary object and the surface on which it is resting?
a. kinetic
b. potential
c. static
d. tension
E. Other:
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