COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Question
Chapter 5, Problem 63QAP
To determine
Centripetal acceleration of one proton
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If the speed of a circularly moving object doubled, the centripetal acceleration of that
object would
1) increase by a factor of two (2)
2) decrease by a factor of four (4)
3) remain constant
4) increase by a factor of four (4)
5) decrease by a factor of two (2)
A particle moves in a circular path of radius r with speed v. It then increases its speed to 2v while traveling along the same circular path. The centripetal acceleration of the particle has changed by what factor? a)0.25 b) 0.5 c) 2 d)4 e) impossible to determine
a) Which particle follows the smaller circle, b) does the particle travel clockwise or counterclockwise? Please explain.
Chapter 5 Solutions
COLLEGE PHYSICS
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- How can an estimate be of value even when it is off by on order of magnitude? Explain and give an example.arrow_forward(a) The Sun orbits the Milky Way galaxy once each 2.60108 y, with a roughly circular orbit averaging 3.00104 light years in radius. (A light year is the distance traveled by light in 1 y.) Calculate the centripetal acceleration of the Sun in its galactic orbit. Does your result support the contention that a nearly inertial frame of reference can be located at the Sun? (b) Calculate the average speed of the Sun in its galactic orbit. Does the answer surprise you?arrow_forwardIn Example 2.6, we considered a simple model for a rocket launched from the surface of the Earth. A better expression for the rockets position measured from the center of the Earth is given by y(t)=(R3/2+3g2Rt)2/3j where R is the radius of the Earth (6.38 106 m) and g is the constant acceleration of an object in free fall near the Earths surface (9.81 m/s2). a. Derive expressions for vy(t) and ay(t). b. Plot y(t), vy(t), and ay(t). (A spreadsheet program would be helpful.) c. When will the rocket be at y=4R? d. What are vy and ay when y=4R?arrow_forward
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- Q5) A point P moves at a constant speed v in a counterclockwise direction along a circle of radius a as shown below. Selecting a pole O at the left end of the horizontal diameter, derive expressions for the radial a, and transverse de components of the acceleration (r = 2a cos0.) v constantarrow_forwardA circus motorcycle acrobat is trying to calculate the speed required to perform a loop- the-loop with a motorcycle. The loop has a radius of 10 m. At what speed must the motorcycle enter the loop at the bottom to negotiate a complete loop against gravity, without the use of its engine while in the loop? We do not have enough information. Mass is required. b) More than 20 m/s. More than 25 m/s. d) Exactly 20 m/s. Exactly 25 m/s.arrow_forward
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